MIC5335 Dual, High Performance 300mA µCap ULDOTM General Description The MIC5335 is a high current density, dual Ultra Low Dropout (ULDO™) 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 ® 1.6mm 6-ld Thin MLF package which is only 2.56mm2 in area of the SOT-23, TSOP and the 3mm x ® 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 µCap design which enables operation with very small output capacitors for stability, thereby reducing required board space and component cost. 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® package Independent enable pins High PSRR - >65dB 300mA output current per LDO µCap Stable with 1µF ceramic capacitor Low quiescent current: 90µA/LDO Fast turn-on time: 30µs Thermal Shutdown Protection Current Limit Protection Applications • Mobile Phones • PDAs • GPS Receivers 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. 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 January 2007 M9999-010407 (408) 955-1690 Micrel, Inc. MIC5335 MIC5335 Block Diagram January 2007 2 M9999-010407 (408) 944-0800 Micrel, Inc. MIC5335 Ordering Information Part number Manufacturing Part Number Marking* Voltage** Junction Temp. Range Package MIC5335-1.8/1.5YMT MIC5335-GFYMT AGF 1.8V/1.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-1.8/1.6YMT MIC5335-GWYMT AGW 1.8V/1.6V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.5/1.8YMT MIC5335-JGYMT AJG 2.5V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.5/2.5YMT MIC5335-JJYMT AJJ 2.5V/2.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.6/1.85YMT MIC5335-KDYMT AKD 2.6V/1.85 –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.6/1.8YMT MIC5335-KGYMT AKG 2.6V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.7/2.7YMT MIC5335-LLYMT ALL 2.7V/2.7V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.8/1.5YMT MIC5335-MFYMT AMF 2.8V/1.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.8/1.8YMT MIC5335-MGYMT AMG 2.8V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.8/2.6YMT MIC5335-MKYMT AMK 2.8V/2.6V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.8/2.8YMT MIC5335-MMYMT AMM 2.8V/2.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF MIC5335-2.8/2.85YMT MIC5335-MNYMT AMN 2.8V/2.85V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.85/1.85YMT MIC5335-NDYMT AND 2.85V/1.85V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.85/2.6YMT MIC5335-NKYMT ANK 2.85V/2.6V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.85/2.85YMT MIC5335-NNYMT ANN 2.85V/2.85V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.9/1.5YMT MIC5335-OFYMT AOF 2.9V/1.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.9/1.8YMT MIC5335-OGYMT AOG 2.9V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.9/2.9YMT MIC5335-OOYMT AOO 2.9V/2.9V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.0/1.8YMT MIC5335-PGYMT APG 3.0V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.0/2.5YMT MIC5335-PJYMT APJ 3.0V/2.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.0/2.6YMT MIC5335-PKYMT APK 3.0V/2.6V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.0/2.8YMT MIC5335-PMYMT APM 3.0V/2.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.0/2.85YMT MIC5335-PNYMT APN 3.0V/2.85V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.0/3.0YMT MIC5335-PPYMT APP 3.0V/3.0V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/1.5YMT MIC5335-SFYMT ASF 3.3V/1.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/1.8YMT MIC5335-SGYMT ASG 3.3V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/2.5YMT MIC5335-SJYMT ASJ 3.3V/2.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/2.6YMT MIC5335-SKYMT ASK 3.3V/2.6V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/2.7YMT MIC5335-SLYMT ASL 3.3V/2.7V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/2.8YMT MIC5335-SMYMT ASM 3.3V/2.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/2.85YMT MIC5335-SNYMT ASN 3.3V/2.85V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/2.9YMT MIC5335-SOYMT ASO 3.3V/2.9V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/3.0YMT MIC5335-SPYMT ASP 3.3V/3.0V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/3.2YMT MIC5335-SRYMT ASR 3.3V/3.2V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/3.3YMT MIC5335-SSYMT ASS 3.3V/3.3V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® ® Note: * Under bar/Over bar symbol may not be to scale. ** For other voltages available. Contact Micrel Marketing for details. January 2007 3 M9999-010407 (408) 944-0800 Micrel, Inc. MIC5335 Pin Configuration 6-pin 1.6mm × 1.6mm Thin MLF Top View ® Pin Description Pin Number Thin MLF-6 Pin Name Pin Function 1 VIN Supply Input. 2 GND Ground 3 EN2 Enable Input (regulator 2). Active High Input. Logic High = On; Logic Low = Off; Do not leave floating. 4 EN1 Enable Input (regulator 1). Active High Input. Logic High = On; Logic Low = Off; Do not leave floating. 5 VOUT2 Regulator Output – LDO2 6 VOUT1 Regulator Output – LDO1 January 2007 4 M9999-010407 (408) 944-0800 Micrel, Inc. MIC5335 Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VIN) .....................................0V to +6V Enable Input Voltage (VEN)...........................0V to +6V Power Dissipation...........................Internally Limited(3) Lead Temperature (soldering, 3sec ...................260°C Storage Temperature (TS) ................. -65°C to +150°C ESD Rating(4) .........................................................2kV Supply voltage (VIN)............................... +2.3V to +5.5V Enable Input Voltage (VEN).............................. 0V to VIN Junction Temperature ......................... -40°C to +125°C Junction Thermal Resistance Thin MLF®-6 (θJA) ................................... 100°C/W Electrical Characteristics(5) VIN = EN1 = EN2 = VOUT + 1.0V; higher of the two regulator outputs, IOUTLDO1 = IOUTLDO2 = 100µA; COUT1 = COUT2 = 1µF;; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C, unless noted. Parameter Output Voltage Accuracy Conditions Min Typ Max Units Variation from nominal VOUT -2.0 +2.0 % Variation from nominal VOUT; –40°C to +125°C -3.0 +3.0 % 0.02 0.3 0.6 %/V %/V 2.0 Line Regulation VIN = VOUT + 1V to 5.5V; IOUT = 100µA Load Regulation IOUT = 100µA to 300mA 0.3 Dropout Voltage (Note 6) IOUT = 100µA 0.1 IOUT = 100mA 25 75 mV IOUT = 150mA 35 100 mV IOUT = 300mA 75 200 mV % mV EN1 = High; EN2 = Low; IOUT = 100µA to 300mA 90 120 µA EN1 = Low; EN2 = High; IOUT = 100µA to 300mA 90 120 µA EN1 = EN2 = High; IOUT1 = 300mA, IOUT2 = 300mA 150 190 µA Ground Current in Shutdown EN1 = EN2 = 0V 0.01 2 µA Ripple Rejection f = 1kHz; COUT = 1.0µF Current Limit VOUT = 0V Output Voltage Noise COUT = 1.0µF; 10Hz to 10MHz Ground Current 65 350 550 dB 950 90 mA µVRMS Enable Inputs (EN1 / EN2) Enable Input Voltage Logic Low 0.2 Logic High Enable Input Current V V 1.1 VIL ≤ 0.2V 0.01 1 µA VIH ≥ 1.0V 0.01 1 µA 30 100 µs Turn-on Time (See Timing Diagram) Turn-on Time (LDO1 and 2) COUT = 1.0µF 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) / θJA. 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. January 2007 5 M9999-010407 (408) 944-0800 Micrel, Inc. MIC5335 Typical Characteristics January 2007 6 M9999-010407 (408) 944-0800 Micrel, Inc. MIC5335 Functional Characteristics January 2007 7 M9999-010407 (408) 944-0800 Micrel, Inc. 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: 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. PD = (VIN – VOUT1) IOUT1 + (VIN – VOUT2) IOUT2+ VIN IGND Because this device is CMOS and the ground current is typically <100µA over the load range, the power dissipation contributed by the ground current is < 1% and can be ignored for this calculation. Input Capacitor The MIC5335 is a high-performance, high bandwidth device. Therefore, it requires a well-bypassed input supply for optimal performance. A 1µF 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. PD = (3.3V – 2.8V) × 300mA + (3.3V – 2.5V) × 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: ⎛ TJ(max) − TA PD(max) = ⎜ ⎜ θ JA ⎝ Output Capacitor The MIC5335 requires an output capacitor of 1µF 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 1µF ceramic output capacitor and does not improve significantly with larger capacitance. TJ(max) = 125°C, the maximum junction temperature of the die θJA thermal resistance = 100°C/W. The table that follows shows junction-to-ambient thermal resistance for the MIC5335 in the Thin MLF® package. 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. Package 6-Pin 1.6 X1.6 Thin MLF™ θJA Recommended Minimum Footprint θJC 100°C/W 2°C/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 100°C/W. 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. January 2007 ⎞ ⎟ ⎟ ⎠ 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 8 M9999-010407 (408) 944-0800 Micrel, Inc. MIC5335 temperature of 86°C in a 1.6mm x 1.6mm Thin MLF® 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: output with a minimum footprint layout, the maximum ambient operating temperature TA can be determined as follows: 0.39W = (125°C – TA)/(100°C/W) TA=86°C http://www.micrel.com/_PDF/other/LDOBk_ds.pdf Therefore, a 2.8V/2.5V application with 300mA at each output current can accept an ambient operating January 2007 9 M9999-010407 (408) 944-0800 Micrel, Inc. MIC5335 Package Information 6-Pin 1.6mm x 1.6mm Thin MLF® (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. © 2006 Micrel, Inc. January 2007 10 M9999-010407 (408) 944-0800