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MIC5375/6/7/8
High Performance Low Dropout 150mA LDO
General Description
The MIC5375/6/7/8 is an advanced general purpose linear regulator offering low dropout in an ultra small package. The MIC5375/6 provides fixed output voltage in a 1mm x 1mm Thin MLF(R) package while the MIC5377/8 provides adjustable output voltage in a 1.2mm x 1.2mm Thin MLF(R) package. When the MIC5376/8 is disabled an internal resistive load is automatically applied to the output to discharge the output capacitor. The MIC5375/6/7/8 is capable of sourcing 150mA output current with low dropout making it an ideal solution for any portable electronic application. Ideal for battery powered applications, the MIC5375/6/7/8 offers 2% initial accuracy, low dropout voltage (120mV at 150mA), and ground current (typically 29A). The MIC5375/6/7/8 can also be put into a zero-off-mode current state, drawing virtually no current when disabled. The MIC5375/6 is available in lead-free (RoHS compliant) 1mm x 1mm Thin MLF(R) and SC-70-5. The MIC5377/8 is available in lead-free (RoHS compliant) 1.2mm x 1.2mm Thin MLF(R) and SC-70-5. The MIC5375/6/7/8 has an operating junction temperature range of -40C to 125C. Data sheets and support documentation can be found on Micrel's web site at www.micrel.com.
Features
4-pin 1mm x 1mm Thin MLF(R) package- MIC5375/6 8-pin 1.2mm x 1.2mm Thin MLF(R) package- MIC5377/8 Low cost 5-Pin SC-70 package Low dropout voltage - 120mV at 150mA Input voltage range: 2.5V to 5.5V 150mA guaranteed output current Stable with 0402 ceramic capacitors as low as 1F Low quiescent current - 29A Excellent load/line transient response Fixed output voltages - MIC5375/6 Adjustable output - MIC5377/8 Output discharge circuit - MIC5376/8 High output accuracy - 2% initial accuracy * Thermal shutdown and current limit protection * * * * * * * * * * * * *
Applications
* * * * Mobile phones Digital cameras GPS, PDAs, PMP, handhelds Portable electronics
___________________________________________________________________________________________________________
Typical Application
MIC5375/6-xxYMT VIN VOUT VBAT 1F EN GND 1F VOUT = 2.8V
Typical Application
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc. Micrel Inc. * 2180 Fortune Drive * San Jose, CA 95131 * USA * tel +1 (408) 944-0800 * fax + 1 (408) 474-1000 * http://www.micrel.com
January 2009
M9999-011309-B
Micrel, Inc.
MIC5375/6/7/8
Block Diagram
VIN EN Reference
LDO
Auto Discharge*
*MIC5376 Only
VOUT
GND
MIC5375/6 Block Diagram
VIN EN Reference
LDO
Auto Discharge*
*MIC5378 Only
VOUT ADJ
GND
MIC5377/8 Block Diagram
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MIC5375/6/7/8
Ordering Information
Part Number Marking Code Output Voltage Temperature Range Package Lead Finish
MIC5375-2.8YMT MIC5375-2.8YC5 MIC5376-2.8YMT* MIC5376-2.8YC5* MIC5377YMT MIC5377YC5 MIC5378YMT* MIC5378YC5*
Notes: 1. 2. 3. 4. *
J7 G7J TT 2T8 AH AHA 67A A67
2.8V 2.8V 2.8V 2.8V ADJ ADJ ADJ ADJ
-40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C
4-Pin 1mm x 1mm Thin MLF(R) 5-Pin SC-70 4-Pin 1mm x 1mm Thin MLF(R) 5-Pin SC-70 8-Pin 1.2mm x 1.2mm Thin MLF 5-Pin SC-70 8-Pin 1.2mm x 1.2mm Thin MLF(R) 5-Pin SC-70
(R)
Pb-Free Pb-Free Pb-Free Pb-Free Pb-Free Pb-Free Pb-Free Pb-Free
Other voltages available. Contact Micrel for details. Under bar symbol ( _ ) may not be to scale. Thin MLF = Pin 1 identifier. Thin MLF is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. MIC5376/8 offers Auto-Discharge function.
(R) (R)
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MIC5375/6/7/8
Pin Configuration
EN GND VIN 1 3 2
4 NC
4-Pin 1mm x 1mm Thin MLF(R) (MT) MIC5375/6 Fixed Output (Top View)
5 VOUT
5-Pin SC-70 (C5) MIC5375/6 Fixed Output
ADJ
7
8
1 EN 2 VIN 3 VOUT
EN GND VIN 1 3 2
GND 6 GND 5
4
4 ADJ
5 VOUT
(R) 8-Pin 1.2mm x 1.2mm Thin MLF (MT) MIC5377/8 Adjustable Output (Bottom View)
5-Pin SC-70 (C5) MIC5377/8 Adjustable Output
Pin Description
Pin No. MIC5375/6 TMLF 1x1 Pin No. MIC5375/6 SC-70-5 Pin No. MIC5377/8 TMLF 1.2x1.2 Pin No. MIC5377/8 SC-70-5 Pin Function Pin Name
3 4 1 2 - - HS Pad
3 1 5 2 - 4
1 2 3 4,5,6,8 7 - -
3 1 5 2 4 - -
EN VIN VOUT GND ADJ NC EPAD
Enable Input. Active High. High = on, low = off. Do not leave floating. Supply Input. Output Voltage. Ground. Adjust Pin: Feedback input from external divider. No connection. Exposed Heatsink Pad connected to ground internally.
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MIC5375/6/7/8
Absolute Maximum Ratings(1)
Supply Voltage (VIN) ............................................... 0V to 6V Enable Voltage (VEN).............................................. 0V to VIN Power Dissipation (PD) ........................... Internally Limited(3) Lead Temperature (soldering, 5 sec)......................... 260C Junction Temperature (TJ) ........................-40C to +125C Storage Temperature (Ts) .........................-65C to +150C ESD Rating(4) .................................................................. 2kV
Operating Ratings(2)
Supply Voltage (VIN)......................................... 2.5V to 5.5V Enable Voltage (VEN).............................................. 0V to VIN Junction Temperature (TJ) ........................ -40C to +125C Junction Thermal Resistance 1mm x 1mm Thin MLF-4 (JA) .........................250C/W 1.2mm x 1.2mm Thin MLF-8(JA) ....................250C/W SC-70-5 (JA) ................................................256.5C/W
Electrical Characteristics(5)
VIN = VEN = VOUT + 1V; CIN = COUT = 1F for Vout 2.5V, CIN = COUT = 2.2F for VOUT < 2.5V; IOUT = 100A; TJ = 25C, bold values indicate -40C to +125C, unless noted.
Parameter Condition Min Typ Max Units
Output Voltage Accuracy Line Regulation Load Regulation(6) Dropout Voltage
(7)
Variation from nominal VOUT Variation from nominal VOUT VIN = VOUT +1V to 5.5V; IOUT = 100A IOUT = 100A to 150mA IOUT = 50mA IOUT = 150mA IOUT = 0mA VEN 0.2V f = 1kHz; COUT = 1F f = 10kHz; COUT = 1F VOUT = 0V COUT = 1F, 10Hz to 100kHz VEN = 0V; VIN = 3.6V
-2.0
-3.0
+2.0
+3.0
% % % % mV mV A A dB dB
0.02 0.3 45 120 29 0.05 60 50 200 370 200 30
0.3
1.0
100 200 45
Ground Pin Current(8) Ground Pin Current in Shutdown Ripple Rejection Current Limit Output Voltage Noise Auto-Discharge NFET Resistance
Reference Voltage (MIC5377/8)
1
550
mA VRMS
Reference Voltage Accuracy Adjust Pin Input Current
Enable Input
0.97
1 0.01
1.03
V A
Enable Input Voltage Enable Input Current Turn-on Time
Logic Low Logic High VIL 0.2V VIH 1.2V COUT = 1F; IOUT = 150mA
1.2
0.2
V V A A s
0.01 0.01 45
1 1 100
Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = (TJ(max) - TA) / JA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. 4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. 5. Specification for packaged product only. 6. Regulation is measured at constant junction temperature using low duty cycle pulse testing. 7. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. For outputs below 2.5V, dropout voltage is the input-to-output differential with the minimum input voltage 2.5V. 8. Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground pin current.
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MIC5375/6/7/8
Typical Characteristics
PSRR
100A
550 CURRENT LIMIT (mA) 500 450 400 350
Current Limit vs. Input Voltage
VOUT = 2.8V
GROUND CURRENT (A)
Ground Current vs. Output Current
50 45 40.0 40 35 30 25 20 15 0 V V
IN
CIN = COUT = 1F
50mA GAIN (dB) 150mA VIN = VOUT = + 1V VOUT = 2.8V COUT = 1F 0 10 1k 100k FREQUENCY (Hz)
=V
EN
=V
OUT
+1V
300 2.5
OUT
= 2.8V
3 3.5 4 4.5 5 INPUT VOLTAGE (V)
5.5
25 50 75 100 125 150 OUTPUT CURRENT (mA)
60 GROUND CURRENT (A) 50 40
Ground Current vs. Temperature
150mA 100mA OUTPUT VOLTAGE (V)
3
Output Voltage vs. Load Current
VOUT = 2.8V
DROPOUT VOLTAGE (mV)
VIN = VEN = VOUT + 1V
140
Dropout Voltage vs. Load Current
IN OUT
V = 2.8V OUT 120 C = C = 1F 100 80 60 40 20 0 0 25 50 75 100 125 150 LOAD CURRENT (mA)
2.9 C = C = 1F IN OUT 2.8
100A 30
50mA
20 VIN = VEN = VOUT + 1V VOUT = 2.8V 10 CIN = COUT = 1F 0 0 25 50 75 100 TEMPERATURE (C) 125
2.7
2.6 0
25 50 75 100 125 150 OUTPUT CURRENT (mA)
2.9 OUTPUT VOLTAGE (V) 2.86 2.82 2.78 2.74 2.7 3
Output Voltage vs. Supply Voltage
VOUT = 2.8V CIN = COUT = 1F 100A 150mA GROUND CURRENT (A) VEN = VIN = VOUT + 1
55 50 45 40 35 30 25 20 15 3
Ground Current vs. Supply Voltage
DROPOUT VOLTAGE (mV) 150mA 100mA
160 140 120 100 80 60 40
Dropout Voltage vs. Temperature
150mA
100mA VOUT = 2.8V 50mA
VIN = VEN VOUT = 2.8V CIN = COUT = 1F
100A
20 CIN = COUT = 1F -40 -20 0 20 40 60 0
10mA 80 100 120
3.5 4 4.5 5 SUPPLY VOLTAGE (V)
5.5
3.5 4 4.5 5 SUPPLY VOLTAGE (V)
5.5
TEMPERATURE (C)
3 OUTPUT VOLTAGE (V)
Output Voltage vs. Temperature
VIN = VEN = VOUT + 1
Output Noise Spectral Density
10
VOUT = 2.8V 2.9 C = C = 1F IN OUT 2.8
1
0.1
2.7
-40
-20
0
20
40
60
80
100
TEMPERATURE (C)
January 2009
120
2.6
0.01 V = V IN OUT + 1V VOUT = 2.8V COUT = 1F 0.001 1k 100k 10 FREQUENCY (Hz)
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MIC5375/6/7/8
Functional Characteristics
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MIC5375/6/7/8
Application Information
MIC5375/6/7/8 is Low noise 150mA LDO. The MIC5376/8 includes an auto-discharge circuit that is switched on when the regulator is disabled through the enable pin. The MIC5375/6/7/8 regulator is protected from damage due to fault conditions, offering linear current limiting and thermal shutdown. Input Capacitor The MIC5375/6/7/8 is a high-performance, high bandwidth device. An input capacitor of 1F is required from the input to ground to provide stability. Low-ESR ceramic capacitors provide optimal performance at a minimum of space. Additional high-frequency capacitors, such as small-valued NPO dielectric-type capacitors, help filter out high-frequency noise and are good practice in any RF-based circuit. X5R or X7R dielectrics are recommended for the input capacitor. Y5V dielectrics lose most of their capacitance over temperature and are therefore, not recommended. Output Capacitor For output voltages 2.5V, the MIC5375/6/7/8 requires a minimum 1F output capacitor. For output voltages below 2.5V a 2.2F minimum output capacitor is required. The design is optimized for use with low-ESR ceramic chip capacitors. High ESR capacitors are not recommended because they may cause high frequency oscillation. The output capacitor can be increased, but performance does not improve significantly with larger capacitance. X7R/X5R dielectric-type ceramic capacitors are recommended because of their temperature performance. X7R-type capacitors change capacitance by 15% over their operating temperature range and are the most stable type of ceramic capacitors. Z5U and Y5V dielectric capacitors change value by as much as 50% and 60%, respectively, over their operating temperature ranges. To use a ceramic chip capacitor with Y5V dielectric, the value must be much higher than an X7R ceramic capacitor to ensure the same minimum capacitance over the equivalent operating temperature range. No-Load Stability Unlike many other voltage regulators, the MIC5375/6/7/8 will remain stable and in regulation with no load. This is especially important in CMOS RAM keep-alive applications.
Enable/Shutdown The MIC5375/6/7/8 is provided with an active-high enable pin that allows the regulator to be disabled. Forcing the enable pin low disables the regulator and sends it into a "zero" off-mode-current state. In this state, current consumed by the regulator goes nearly to zero. Forcing the enable pin high enables the output voltage. The active-high enable pin uses CMOS technology and the enable pin cannot be left floating; a floating enable pin may cause an indeterminate state on the output. Adjustable Regulator Design The MIC5377/8 adjustable version allows setting the output voltage down to 1V with the use of two external feedback resistors.
J1 VIN J5 EN J2 GND C1 2.2F 6.3V U1 MIC5377/8-xxYMT 2 VIN VOUT 3 C2 2.2F 6.3V J3 VOUT R1 619k R2 267k
1
EN
GND
ADJ
7
4,5,6,8
J4 GND
R VOUT = VREF 1 + 1 R2
Thermal Considerations The MIC5375/6/7/8 is designed to provide 150mA of continuous current in a very small package. Maximum ambient operating temperature can be calculated based on the output current and the voltage drop across the part. For example if the input voltage is 3.6V, the output voltage is 2.8V, and the output current = 150mA. The actual power dissipation of the regulator circuit can be determined using the equation: PD = (VIN - VOUT1) I OUT + VIN IGND Because this device is CMOS and the ground current is typically <100A over the load range, the power dissipation contributed by the ground current is < 1% and can be ignored for this calculation. PD = (3.6V - 2.8V) x 150mA PD = 0.12W To determine the maximum ambient operating temperature of the package, use the junction-to-ambient thermal resistance of the device and the following basic equation:
TJ(max) - TA PD(max) = JA
TJ(max) = 125C, the maximum junction temperature of the die, JA thermal resistance = 250C/W for the YMT package and 256.5C/W for the SC-70-5 package.
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Micrel, Inc. Substituting PD for PD(max) and solving for the ambient operating temperature will give the maximum operating conditions for the regulator circuit. The junction-toambient thermal resistance for the minimum footprint is 250C/W. The maximum power dissipation must not be exceeded for proper operation. For example, when operating the MIC5375-2.8YMT at an input voltage of 3.6V and 150mA load with a minimum footprint layout, the maximum ambient operating temperature TA can be determined as follows: 0.12W = (125C - TA)/(250C/W) TA = 95C
MIC5375/6/7/8 Therefore the maximum ambient operating temperature of 95C is allowed in a 1mm x 1mm TMLF(R) package. For a full discussion of heat sinking and thermal effects on voltage regulators, refer to the "Regulator Thermals" section of Micrel's Designing with Low-Dropout Voltage Regulators handbook. This information can be found on Micrel's website at: http://www.micrel.com/_PDF/other/LDOBk_ds.pdf
January 2009
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Micrel, Inc.
MIC5375/6/7/8
J1 VIN 2.5V - 5.5V J2 GND
C1 1F/10V
U1 MIC5375/6-xxYMT 4 VIN VOUT 1
2
GND
EN
3
C2 1F/10V R1 100k
J3 VOUT J4 GND J5 EN
Bill of Materials
Item Part Number Manufacturer Description Qty.
GRM155R61A105KE15D C1, C2 R1
U1
Notes: 1. Murata: www.murata.com 2. TDK: www.tdk.com 3. AVX: www.avx.com 4. Vishay: www.vishay.com 5. Micrel, Inc.: www.micrel.com
Murata
(1)
C1005X5R1A105K 0402ZD105MAT CRCW0603100KFKEA
MIC5375/6-xxYMT
TDK(2) AVX(3) Vishay(4)
Micrel, Inc.
(5)
Capacitor, 1F Ceramic, 10V, X5R, Size 0402 Resistor, 100k, 1%, 1/16W, Size 0603
High Performance 150mA LDO, 4 Pin 1mm x 1mm Thin MLF(R)
2 1
1
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Micrel, Inc.
MIC5375/6/7/8
J1 VIN J5 EN J2 GND R3 100k
C1* 2.2F 6.3V
U1 MIC5375/6YC5 1 VIN VOUT 5
3
EN
GND
2
NC
4
C2* 2.2F 6.3V
J3 VOUT
J4 GND
Bill of Materials
Item Part Number Manufacturer Description Qty.
JMK105BJ225MV-F C1, C2 GRM155R60G225ME15D CV05X5R225K10AB GRM155R61A105KE15D C1, C2 R1 R2 R3
U1
Notes: 1. Taiyo Yuden: 2. Murata: www.murata.com 3. AVX/Kyocera: www.avx.com 4. Vishay: www.vishay.com 5. Micrel, Inc.: www.micrel.com
Taiyo Yuden Murata(2)
(1)
Capacitor, 2.2F, 6.3V, X5R, Size 0402
(3)
2
AVX/Kyocera Murata(1) TDK(2)
C1005X5R1A105KT CV05X5R105K10AH CRCW0402619KFKEA CRCW04022673KFKEA CRCW04021003KFKEA
MIC5375/6YC5
Capacitor, 1F Ceramic, 10V, X5R, Size 0402 Resistor, 619k, 1%, 1/16W, Size 0402 Resistor, 267k, 1%, 1/16W, Size 0402 Resistor, 100k, 1%, 1/16W, Size 0402
(5)
2 1 1 1
1
AVX/Kyocera(3) Vishay(4) Vishay
(4)
Vishay(4)
Micrel, Inc.
High Performance 150mA LDO, 5-Pin SC-70
* CIN = COUT = 1F for Vout 2.5V, CIN = COUT = 2.2F for VOUT < 2.5V
January 2009
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M9999-011309-B
Micrel, Inc.
MIC5375/6/7/8
J1 VIN J5 EN J2 GND R3 100k
C1* 2.2F 6.3V
U1 MIC5377/8-xxYMT 2 VIN VOUT 3
1
EN
GND
ADJ
7
C2* 2.2F 6.3V
J3 VOUT R1 619k R2 267k
4,5,6,8
J4 GND
Bill of Materials
Item Part Number Manufacturer Description Qty.
JMK105BJ225MV-F C1, C2 GRM155R60G225ME15D CV05X5R225K10AB GRM155R61A105KE15D C1, C2 R1 R2 R3
U1
Notes: 1. Taiyo Yuden: 2. Murata: www.murata.com 3. AVX/Kyocera: www.avx.com 4. Vishay: www.vishay.com 5. Micrel, Inc.: www.micrel.com
Taiyo Yuden Murata(2)
(1)
Capacitor, 2.2F, 6.3V, X5R, Size 0402
(3)
2
AVX/Kyocera Murata(1) TDK(2)
C1005X5R1A105KT CV05X5R105K10AH CRCW0402619KFKEA CRCW04022673KFKEA CRCW04021003KFKEA
MIC5377/8-xxYMT
Capacitor, 1F Ceramic, 10V, X5R, Size 0402 Resistor, 619k, 1%, 1/16W, Size 0402 Resistor, 267k, 1%, 1/16W, Size 0402 Resistor, 100k, 1%, 1/16W, Size 0402
(5)
2 1 1 1
1
AVX/Kyocera(3) Vishay(4) Vishay
(4)
Vishay(4)
Micrel, Inc.
High Performance 150mA LDO, 8 Pin 1.2mm x 1.2mm Thin MLF(R)
* CIN = COUT = 1F for Vout 2.5V, CIN = COUT = 2.2F for VOUT < 2.5V
January 2009
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M9999-011309-B
Micrel, Inc.
MIC5375/6/7/8
J1 VIN J5 EN J2 GND R3 100k
C1* 2.2F 6.3V
U1 MIC5377/8YC5 1 VIN VOUT 5
3
EN
GND
2
ADJ
4
C2* 2.2F 6.3V
J3 VOUT R1 619k R2 267k
J4 GND
Bill of Materials
Item Part Number Manufacturer Description Qty.
JMK105BJ225MV-F C1, C2 GRM155R60G225ME15D CV05X5R225K10AB GRM155R61A105KE15D C1, C2 R1 R2 R3
U1
Notes: 1. Taiyo Yuden: 2. Murata: www.murata.com 3. AVX/Kyocera: www.avx.com 4. Vishay: www.vishay.com 5. Micrel, Inc.: www.micrel.com
Taiyo Yuden Murata(2)
(1)
Capacitor, 2.2F, 6.3V, X5R, Size 0402
(3)
2
AVX/Kyocera Murata(1) TDK(2)
C1005X5R1A105KT CV05X5R105K10AH CRCW0402619KFKEA CRCW04022673KFKEA CRCW04021003KFKEA
MIC5377/8YC5
Capacitor, 1F Ceramic, 10V, X5R, Size 0402 Resistor, 619k, 1%, 1/16W, Size 0402 Resistor, 267k, 1%, 1/16W, Size 0402 Resistor, 100k, 1%, 1/16W, Size 0402
(5)
2 1 1 1
1
AVX/Kyocera(3) Vishay(4) Vishay
(4)
Vishay(4)
Micrel, Inc.
High Performance 150mA LDO, 5-Pin SC-70
* CIN = COUT = 1F for Vout 2.5V, CIN = COUT = 2.2F for VOUT < 2.5V
January 2009
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MIC5375/6/7/8
PCB Layout Recommendations (1mm x 1mm 4-Pin Thin MLF(R)) Fixed
Top Layer
Bottom Layer
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M9999-011309-B
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MIC5375/6/7/8
PCB Layout Recommendations (1.2mm x 1.2mm 8-Pin Thin MLF(R)) Adjustable
Top Layer
Bottom Layer
January 2009
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Micrel, Inc.
MIC5375/6/7/8
PCB Layout Recommendations (SC-70-5)
Top Layer
Bottom Layer
January 2009
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MIC5375/6/7/8
Package Information
4-Pin 1mm x 1mm Thin MLF(R) (MT)
8-Pin 1.2mm x 1.2mm Thin MLF(R) (MT)
January 2009
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MIC5375/6/7/8
5-Pin SC-70 (C5)
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. (c) 2008 Micrel, Incorporated.
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M9999-011309-B

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