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MIC5335
Dual, High Performance 300mA Cap ULDOTM
General Description
The MIC5335 is a high current density, dual Ultra Low Dropout (ULDOTM) linear regulator. The MIC5335 is ideally suited for portable electronics which demand overall high performance in a very small form factor. The MIC5335 is offered in the ultra small 1.6mm x (R) 1.6mm 6-ld Thin MLF package which is only 2.56mm2 in area of the SOT-23, TSOP and the 3mm x (R) 3mm MLF package. The MIC5335 delivers exceptional thermal performances for those applications that demand higher power dissipation requirements in a very small foot print. In addition, the MIC5335 integrates two high performance 300mA LDOs with independent enable functions and offers high PSRR eliminating the need for a bypass capacitor. The MIC5335 is a Cap design which enables operation with very small output capacitors for stability, thereby reducing required board space and component cost. The MIC5335 is available in fixed-output voltages. Additional voltages are available. For more information, contact Micrel's Marketing department. Data sheets and support documentation can be found on Micrel's web site at: www.micrel.com.
Features
* * * * * * * * * * * 2.3V to 5.5V input voltage range Ultra-low dropout voltage: 75mV at 300mA Ultra Thin 1.6mm x 1.6mm 6 lead MLF(R) package Independent enable pins High PSRR - >65dB 300mA output current per LDO Cap Stable with 1F ceramic capacitor Low quiescent current: 90A/LDO Fast turn-on time: 30s Thermal Shutdown Protection Current Limit Protection
Applications
* Mobile Phones * PDAs * GPS Receivers
Typical Application
MicroLead Frame and MLF are registered trademarks of Amkor Technologies. ULDO is a trademark of Micrel, 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.
MIC5335
MIC5335 Block Diagram
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MIC5335
Ordering Information
Part number MIC5335-1.8/1.5YMT MIC5335-1.8/1.6YMT MIC5335-2.5/1.8YMT MIC5335-2.5/2.5YMT MIC5335-2.6/1.85YMT MIC5335-2.6/1.8YMT MIC5335-2.7/2.7YMT MIC5335-2.8/1.5YMT MIC5335-2.8/1.8YMT MIC5335-2.8/2.6YMT MIC5335-2.8/2.8YMT MIC5335-2.8/2.85YMT MIC5335-2.85/1.85YMT MIC5335-2.85/2.6YMT MIC5335-2.85/2.85YMT MIC5335-2.9/1.5YMT MIC5335-2.9/1.8YMT MIC5335-2.9/2.9YMT MIC5335-3.0/1.8YMT MIC5335-3.0/2.5YMT MIC5335-3.0/2.6YMT MIC5335-3.0/2.8YMT MIC5335-3.0/2.85YMT MIC5335-3.0/3.0YMT MIC5335-3.3/1.5YMT MIC5335-3.3/1.8YMT MIC5335-3.3/2.5YMT MIC5335-3.3/2.6YMT MIC5335-3.3/2.7YMT MIC5335-3.3/2.8YMT MIC5335-3.3/2.85YMT MIC5335-3.3/2.9YMT MIC5335-3.3/3.0YMT MIC5335-3.3/3.2YMT MIC5335-3.3/3.3YMT
Note: * Under bar/Over bar symbol may not be to scale. ** For other voltages available. Contact Micrel Marketing for details.
Manufacturing Part Number MIC5335-GFYMT MIC5335-GWYMT MIC5335-JGYMT MIC5335-JJYMT MIC5335-KDYMT MIC5335-KGYMT MIC5335-LLYMT MIC5335-MFYMT MIC5335-MGYMT MIC5335-MKYMT MIC5335-MMYMT MIC5335-MNYMT MIC5335-NDYMT MIC5335-NKYMT MIC5335-NNYMT MIC5335-OFYMT MIC5335-OGYMT MIC5335-OOYMT MIC5335-PGYMT MIC5335-PJYMT MIC5335-PKYMT MIC5335-PMYMT MIC5335-PNYMT MIC5335-PPYMT MIC5335-SFYMT MIC5335-SGYMT MIC5335-SJYMT MIC5335-SKYMT MIC5335-SLYMT MIC5335-SMYMT MIC5335-SNYMT MIC5335-SOYMT MIC5335-SPYMT MIC5335-SRYMT MIC5335-SSYMT
Marking* AGF AGW AJG AJJ AKD AKG ALL AMF AMG AMK AMM AMN AND ANK ANN AOF AOG AOO APG APJ APK APM APN APP ASF ASG ASJ ASK ASL ASM ASN ASO ASP ASR ASS
Voltage** 1.8V/1.5V 1.8V/1.6V 2.5V/1.8V 2.5V/2.5V 2.6V/1.85 2.6V/1.8V 2.7V/2.7V 2.8V/1.5V 2.8V/1.8V 2.8V/2.6V 2.8V/2.8V 2.8V/2.85V 2.85V/1.85V 2.85V/2.6V 2.85V/2.85V 2.9V/1.5V 2.9V/1.8V 2.9V/2.9V 3.0V/1.8V 3.0V/2.5V 3.0V/2.6V 3.0V/2.8V 3.0V/2.85V 3.0V/3.0V 3.3V/1.5V 3.3V/1.8V 3.3V/2.5V 3.3V/2.6V 3.3V/2.7V 3.3V/2.8V 3.3V/2.85V 3.3V/2.9V 3.3V/3.0V 3.3V/3.2V 3.3V/3.3V
Junction Temp. Range -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C
Package 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF
(R)
6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R) 6-Pin 1.6x1.6 Thin MLF(R)
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MIC5335
Pin Configuration
6-pin 1.6mm x 1.6mm Thin MLF Top View
(R)
Pin Description
Pin Number Thin MLF-6 1 2 3 4 5 6 Pin Name VIN GND EN2 EN1 VOUT2 VOUT1 Pin Function Supply Input. Ground Enable Input (regulator 2). Active High Input. Logic High = On; Logic Low = Off; Do not leave floating. Enable Input (regulator 1). Active High Input. Logic High = On; Logic Low = Off; Do not leave floating. Regulator Output - LDO2 Regulator Output - LDO1
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Absolute Maximum Ratings(1)
Supply Voltage (VIN) .....................................0V to +6V Enable Input Voltage (VEN)...........................0V to +6V Power Dissipation...........................Internally Limited(3) Lead Temperature (soldering, 3sec ...................260C Storage Temperature (TS) ................. -65C to +150C ESD Rating(4) .........................................................2kV
Operating Ratings(2)
Supply voltage (VIN)............................... +2.3V to +5.5V Enable Input Voltage (VEN).............................. 0V to VIN Junction Temperature ......................... -40C to +125C Junction Thermal Resistance Thin MLF(R)-6 (JA) ................................... 100C/W
Electrical Characteristics(5)
VIN = EN1 = EN2 = VOUT + 1.0V; higher of the two regulator outputs, IOUTLDO1 = IOUTLDO2 = 100A; COUT1 = COUT2 = 1F;; TJ = 25C, bold values indicate -40C TJ +125C, unless noted.
Parameter Output Voltage Accuracy Line Regulation Load Regulation Dropout Voltage (Note 6) Conditions Variation from nominal VOUT Variation from nominal VOUT; -40C to +125C VIN = VOUT + 1V to 5.5V; IOUT = 100A IOUT = 100A to 300mA IOUT = 100A IOUT = 100mA IOUT = 150mA IOUT = 300mA Ground Current EN1 = High; EN2 = Low; IOUT = 100A to 300mA EN1 = Low; EN2 = High; IOUT = 100A to 300mA EN1 = EN2 = High; IOUT1 = 300mA, IOUT2 = 300mA Ground Current in Shutdown Ripple Rejection Current Limit Output Voltage Noise Enable Inputs (EN1 / EN2) Enable Input Voltage Enable Input Current Logic Low Logic High VIL 0.2V VIH 1.0V Turn-on Time (See Timing Diagram) Turn-on Time (LDO1 and 2)
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. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal VOUT. For outputs below 2.3V, the dropout voltage is the input-to-output differential with the minimum input voltage 2.3V.
Min -2.0 -3.0
Typ
Max +2.0 +3.0
Units % % %/V %/V % mV mV mV mV A A A A dB
0.02 0.3 0.1 25 35 75 90 90 150 0.01 65 350 550 90
0.3 0.6 2.0 75 100 200 120 120 190 2
EN1 = EN2 = 0V f = 1kHz; COUT = 1.0F VOUT = 0V COUT = 1.0F; 10Hz to 10MHz
950
mA VRMS
0.2 1.1 0.01 0.01 1 1
V V A A
COUT = 1.0F
30
100
s
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Typical Characteristics
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Functional Characteristics
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MIC5335 Thermal Considerations The MIC5335 is designed to provide 300mA of continuous current for both outputs in a very small package. Maximum ambient operating temperature can be calculated based upon the output current and the voltage drop across the part. Given that the input voltage is 3.3V, the output voltage is 2.8V for VOUT1, 2.5V for VOUT2 and the output current = 300mA. The actual power dissipation of the regulator circuit can be determined using the equation: PD = (VIN - VOUT1) IOUT1 + (VIN - VOUT2) IOUT2+ 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 - 2.8V) x 300mA + (3.3V - 2.5V) x 300mA PD = 0.39W To determine the maximum ambient operating temperature of the package, use the junction-toambient thermal resistance of the device and the following basic equation:
Applications Information
Enable/Shutdown The MIC5335 comes with dual active-high enable pins that allow each regulator to be disabled independently. 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. Input Capacitor The MIC5335 is a high-performance, high bandwidth device. Therefore, it requires a well-bypassed input supply for optimal performance. A 1F capacitor is required from the input-to-ground to provide stability. Low-ESR ceramic capacitors provide optimal performance at a minimum of space. Additional highfrequency capacitors, such as small-valued NPO dielectric-type capacitors, help filter out highfrequency noise and are good practice in any RFbased circuit. Output Capacitor The MIC5335 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 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 on the market. 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 MIC5335 will remain stable and in regulation with no load. This is especially important in CMOS RAM keep-alive applications. 8
TJ(max) - TA PD(max) = JA

TJ(max) = 125C, the maximum junction temperature of the die JA thermal resistance = 100C/W. The table that follows shows junction-to-ambient thermal resistance for the MIC5335 in the Thin MLF(R) package.
JA Recommended Minimum Footprint 100C/W JC
Package
6-Pin 1.6 X1.6 Thin MLFTM
2C/W
Thermal Resistance Substituting PD for PD(max) and solving for the ambient operating temperature will give the maximum operating conditions for the regulator circuit. The junction-to-ambient thermal resistance for the minimum footprint is 100C/W. The maximum power dissipation must not be exceeded for proper operation. For example, when operating the MIC5335-MFYML at an input voltage of 3.3V and 300mA loads at each
M9999-010407 (408) 944-0800
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Micrel, Inc. output with a minimum footprint layout, the maximum ambient operating temperature TA can be determined as follows: 0.39W = (125C - TA)/(100C/W) TA=86C Therefore, a 2.8V/2.5V application with 300mA at each output current can accept an ambient operating
MIC5335 temperature of 86C 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" subsection 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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MIC5335
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) 2006 Micrel, Inc.
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