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MIC5367/8
High Performance 200mA Peak LDO in 1.6mm x 1.6mm Thin MLF(R)
General Description
The MIC5367/8 is an advanced general purpose linear regulator offering high power supply rejection (PSRR) in an ultra-small 1.6mm x 1.6mm package. The MIC5368 includes an auto-discharge feature that is activated when the enable pin is low. The MIC5367/8 is capable of sourcing 200mA peak (150mA continous) output current and offers high PSRR making it an ideal solution for any portable electronic application. Ideal for battery powered applications, the MIC5367/8 offers 2% initial accuracy, low dropout voltage (180mV @ 150mA), and low ground current (typically 29A). The MIC5367/8 can also be put into a zero-off-mode current state, drawing virtually no current when disabled. The MIC5367/8 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
* * * * * * * * * Input voltage range: 2.5V to 5.5V 200mA peak (150mA continuous) output current Stable with 1F ceramic output capacitors Low dropout voltage - 180mV @ 150mA Excellent Load/Line Transient Response Low quiescent current - 29A High PSRR - 65dB Output discharge circuit - MIC5368 High output accuracy - 2% initial accuracy * Tiny 1.6mm x 1.6mm Thin MLF(R) package * Thermal shutdown and current limit protection
Applications
* * * * Mobile phones Digital cameras GPS, PDAs, PMP, handhelds Portable electronics
___________________________________________________________________________________________________________
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
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Micrel, Inc.
MIC5367/8
Block Diagram
MIC5367 Block Diagram
MIC5368 Block Diagram
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Ordering Information
Part Number(1) MIC5367-1.2YMT MIC5367-1.5YMT MIC5367-3.3YMT MIC5368-1.2YMT* MIC5368-1.5YMT* MIC5368-3.3YMT*
Notes: 1. 2. 3. * Other voltages available. Contact Micrel for details. Thin MLF = Pin 1 identifier. Thin MLF is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. MIC5368 offers Auto-Discharge function.
(R) (R)
Marking Code 674 F67 67S 684 F68 68S
Output Voltage 1.2V 1.5V 3.3V 1.2V 1.5V 3.3V
Temperature Range -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C
Package(2) 6-Pin 1.6mm x 1.6mm Thin MLF(R) 6-Pin 1.6mm x 1.6mm Thin MLF(R) 6-Pin 1.6mm x 1.6mm Thin MLF 6-Pin 1.6mm x 1.6mm Thin MLF
(R)
Lead Finish(3) Pb-Free Pb-Free Pb-Free Pb-Free Pb-Free Pb-Free
6-Pin 1.6mm x 1.6mm Thin MLF(R)
(R)
6-Pin 1.6mm x 1.6mm Thin MLF(R)
Pin Configuration
6-Pin 1.6mm x 1.6mm Thin MLF(R) (MT)
Pin Description
Pin Number 1 2 3 4 5 6 EP Pin Name EN GND VIN VOUT NC NC HS Pad Pin Function Enable Input: Active High. High = ON; Low = OFF. Do not leave floating. Ground. Supply Input. Output Voltage. No Connect (Not internally connected). No Connect (Not internally connected). Exposed Heatsink Pad.
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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, 10sec)........................ 260C Junction Temperature (TJ) ........................-40C to +150C 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 1.6 x1.6 Thin MLF-6 (JA) ...............................92.4C/W
Electrical Characteristics(5)
VIN = VEN = VOUT + 1V; CIN = COUT = 1F; IOUT = 100A; TJ = 25C, bold values indicate -40C to +125C, unless noted.
Parameter Output Voltage Accuracy Line Regulation Load Regulation
(6)
Condition Variation from nominal VOUT Variation from nominal VOUT; -40C to +125C VIN = VOUT +1V to 5.5V; IOUT = 100A IOUT = 100A to 150mA IOUT = 50mA IOUT = 150mA
(8)
Min -2.0 -3.0
Typ
Max +2.0 +3.0
Units % % % % mV mV A A dB dB
0.02 0.3 60 180 29 0.05 65 55 200 325 200 30
0.3 1 135 380 39 1
Dropout Voltage(7) Ground Pin Current Ripple Rejection Current Limit Output Voltage Noise Auto-Discharge NFET Resistance Enable Input Enable Input Voltage Enable Input Current Turn-on Time
IOUT = 0mA VEN 0.2V f = up to 1kHz; COUT = 1F f = 1kHz - 10kHz; COUT = 1F VOUT = 0V COUT = 1F, 10Hz to 100kHz MIC5368 Only; VEN = 0V; VIN = 3.6V; IOUT = -3mA
Ground Pin Current in Shutdown
550
mA VRMS
Logic Low Logic High VIL 0.2V VIH 1.2V COUT = 1F; IOUT = 150mA 1.2 0.01 0.01 50
0.2 1 1 125
V V A A s
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; changes in output voltage due to heating effects are covered by the thermal regulation specification. 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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Typical Characteristics
Power Supply Rejection Ratio
-100
DROPOUT VOLTAGE (mV)
Dropout Voltage vs. Output Current
160
Dropout Voltage vs. Temperature
200 DROPOUT VOLTAGE (mV) 180 160 140 120 100 80 60 40 20 0
150
10mA 100mA 50mA CIN = COUT = 1F V OUT = 3.3V 150mA
-90 -80 -70 -60 dB -50 -40 -30 -20 -10 0
10 100
100A
140 120 100 80 60 40 20 0 0 25 50 75
VOUT = 3.3V CIN = COUT = 1F
75mA 150mA
V IN = 4.35V V OUT = 3.3V COUT = 1F 1000 10000 100000 1000000
100
125
-40 -20
0
20
40
60
80 100 120
FREQUENCY(Hz)
OUTPUT CURRENT (mA)
TEMPERATURE (C)
Ground Current vs. Supply Voltage
38 GROUND CURRENT (A)
150mA
Ground Current vs. Load current
40 GROUND CURRENT ( A)
Ground Current vs. Temperature
40 38 GROUND CURRENT (A) 36 34 32 30 28 26 24 22 20 -40 -20 0 20
VEN = V IN = VOUT + 1V VOUT = 3.3V CIN = COUT = 1F 50mA 100A 100mA 150mA
36 34 32 30 28 26 24 22 20 2.5 3 3.5 4 4.5 5 5.5 SUPPLY VOLTAGE (V)
VEN = V IN VOUT = 3.3V CIN = COUT = 1F 100A
38 36 34 32
VEN = VIN = VOUT + 1V
30 28 0 20 40 60
VOUT = 3.3V CIN = COUT = 1F
80
100 120 140
40
60
80
100 120
LOAD CURRENT (mA)
TEMPERATURE (C)
Output Voltage vs. Load Current
3.500 3.450 OUTPUT VOLTAGE (V)
Output Voltage vs. Supply Voltage
3.4 3.3 OUTPUT VOLTAGE (V) 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 2.5 3.0 3.5 4.0
VIN = V IN VOUT = 3.3V CIN = COUT = 1F
Output Voltage vs. Temperature
3.5
1mA
3.350 3.300 3.250 3.200 3.150 3.100 0 20 40 60 80 100 120 140 160 LOAD CURRENT (mA)
VIN = V EN = V OUT + 1V VOUT = 3.3V CIN = COUT = 1F COUT = 1F/10V
150mA
OUTPUT VOLTAGE (V)
3.400
50mA
3.4 3.3 3.2
VIN = VOUT + 13V
3.1 3.0
VOUT = 3.3V CIN = COUT = 1F IOUT = 150mA
4.5
5.0
5.5
-40 -20
0
20
40
60
80
100 120
SUPPLY VOLTAGE (V)
TEMPERATURE (C)
Current Limit vs. Supply Voltage
400
10
Output Noise Spectral Density
CURRENT LIMIT (mA)
350
1
300
NOISE uV/Hz
0.1
VIN = VEN=4.1V VOUT = 1.5V
250
V OUT = 3.3V CIN = COUT = 1F
0.01
COUT = 1F IOUT = 150mA Noise(10Hz to 100Khz)=136Vrms
200 3 3.5 4 4.5 5 5.5 SUPPLY VOLTAGE (V)
0.001
10 100 1000 10000 100000 1000000
FREQUENCY (Hz)
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Functional Characteristics
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MIC5367/8 Enable/Shutdown The MIC5367/8 comes 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. Thermal Considerations The MIC5367/8 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 3.3V, the output voltage is 1.5V, 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 = (3.3V - 1.5V) x 150mA PD = 0.27W 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
Application Information
MIC5367 and MIC5368 are Low noise 150mA LDOs. The MIC5368 includes an auto-discharge circuit that is switched on when the regulator is disabled through the Enable pin. The MIC5367/8 regulator is fully protected from damage due to fault conditions, offering linear current limiting and thermal shutdown. Input Capacitor The MIC5367/8 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 The MIC5367/8 requires an output capacitor of 1F or greater to maintain stability. 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 has been optimized for a 1F ceramic output capacitor and 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 MIC5367/8 will remain stable and in regulation with no load. This is especially important in CMOS RAM keep-alive applications.
TJ(max) = 125C, the maximum junction temperature of the die, JA thermal resistance = 92.4C/W for the YMT package. 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 92.4C/W. The maximum power dissipation must not be exceeded for proper operation.
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Micrel, Inc. For example, when operating the MIC5367-1.5YMT at an input voltage of 3.3V and 150mA load with a minimum footprint layout, the maximum ambient operating temperature TA can be determined as follows: 0.27W = (125C - TA)/(92.4C/W) TA = 100C
MIC5367/8 Therefore the maximum ambient operating temperature of 100C is allowed in a 1.6mm x 1.6mm Thin MLF(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
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Bill of Materials
Item C1, C2 U1
Notes: 1. Murata: www.murata.com 2. Micrel, Inc.: www.micrel.com
Part Number GRM155R61A105KE15D MIC5367/8-xxYMT
Manufacturer Murata
(1)
Description Capacitor, 1F Ceramic, 10V, X7R, Size 0402 High Performance Single 150mA LDO in 1.6x1.6 Thin MLF(R)
Qty. 2 1
Micrel, Inc.(2)
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PCB Layout Recommendations (1.6mm x 1.6mm Thin MLF(R))
Top Layer
Bottom Layer
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Package Information
6-Pin 1.6mm x 1.6mm Thin MLF(R) (MT)
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) 2010 Micrel, Incorporated.
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