MIC5335 Dual, High Performance 300mA µCap ULDO™ General Description Features 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 x 0.55mm 6-ld Thin MLF package, which is 2 only 2.56mm in area. The MIC5335 delivers exceptional thermal performance for those applications that demand higher power dissipation 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. • 2.3V to 5.5V input voltage range • Ultra-low dropout voltage: 75mV at 300mA • Ultra Small 1.6mm x 1.6mm x 0.55mm 6 lead MLF® package • Independent enable pins • High PSRR > 65dB @ 1kHz • 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 The MIC5335 is a µCap 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. Applications • • • • • • Mobile Phones PDAs GPS Receivers Portable electronics Portable media players Digital still and video cameras Typical Application ULDO is a trademark of Micrel, Inc. MLF and MicroLead Frame are registered trademarks of Amkor Technologies. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com May 2008 M9999-051508 Micrel, Inc. MIC5335 MIC5335 Block Diagram May 2008 2 M9999-051508 Micrel, Inc. MIC5335 Ordering Information Part number Manufacturing Part Number MIC5335-1.8/1.5YMT Marking Voltage* Junction Temp. Range Package MIC5335-GFYMT GPF 1.8V/1.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-1.8/1.6YMT MIC5335-GWYMT GPW 1.8V/1.6V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-1.8/1.8YMT MIC5335-GGYMT GPG 1.8V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.5/1.8YMT MIC5335-JGYMT JPG 2.5V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.5/2.5YMT MIC5335-JJYMT JPJ 2.5V/2.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.6/1.85YMT MIC5335-KDYMT KPD 2.6V/1.85 –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.6/1.8YMT MIC5335-KGYMT KPG 2.6V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.7/2.7YMT MIC5335-LLYMT LPL 2.7V/2.7V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.8/1.5YMT MIC5335-MFYMT MPF 2.8V/1.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.8/1.8YMT MIC5335-MGYMT MPG 2.8V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.8/2.6YMT MIC5335-MKYMT MPK 2.8V/2.6V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.8/2.8YMT MIC5335-MMYMT MPM 2.8V/2.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.85/1.85YMT MIC5335-NDYMT NPD 2.85V/1.85V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.85/2.6YMT MIC5335-NKYMT NPK 2.85V/2.6V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.85/2.85YMT MIC5335-NNYMT NPN 2.85V/2.85V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.9/1.5YMT MIC5335-OFYMT OPF 2.9V/1.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.9/1.8YMT MIC5335-OGYMT OPG 2.9V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-2.9/2.9YMT MIC5335-OOYMT OPO 2.9V/2.9V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.0/1.8YMT MIC5335-PGYMT PPG 3.0V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.0/2.5YMT MIC5335-PJYMT PPJ 3.0V/2.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.0/2.6YMT MIC5335-PKYMT PPK 3.0V/2.6V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.0/2.8YMT MIC5335-PMYMT PPM 3.0V/2.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.0/2.85YMT MIC5335-PNYMT PPN 3.0V/2.85V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.0/3.0YMT MIC5335-PPYMT PPP 3.0V/3.0V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/1.5YMT MIC5335-SFYMT SPF 3.3V/1.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/1.8YMT MIC5335-SGYMT SPG 3.3V/1.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/2.5YMT MIC5335-SJYMT SPJ 3.3V/2.5V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/2.6YMT MIC5335-SKYMT SPK 3.3V/2.6V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/2.7YMT MIC5335-SLYMT SPL 3.3V/2.7V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/2.8YMT MIC5335-SMYMT SPM 3.3V/2.8V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/2.85YMT MIC5335-SNYMT SPN 3.3V/2.85V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/2.9YMT MIC5335-SOYMT SPO 3.3V/2.9V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/3.0YMT MIC5335-SPYMT SPP 3.3V/3.0V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/3.2YMT MIC5335-SRYMT SPR 3.3V/3.2V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® MIC5335-3.3/3.3YMT MIC5335-SSYMT SPS 3.3V/3.3V –40°C to +125°C 6-Pin 1.6x1.6 Thin MLF® Note: * For other voltages available. Contact Micrel Marketing for details. May 2008 3 M9999-051508 Micrel, Inc. MIC5335 Pin Configuration VIN 1 6 VOUT1 GND 2 5 VOUT2 EN2 3 4 EN1 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 HS Pad EPAD May 2008 Exposed heatsink pad connected to ground internally. 4 M9999-051508 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 90 125 µA EN1 = Low; EN2 = High; IOUT = 100µA to 300mA 90 125 µA EN1 = EN2 = High; IOUT1 = 300mA, IOUT2 = 300mA 150 220 µA Ground Current in Shutdown EN1 = EN2 = 0V 0.01 2 µA Ripple Rejection f = 1kHz; COUT = 1.0µF 65 f = 20kHz; COUT = 1.0µF 45 Ground Current Current Limit VOUT = 0V Output Voltage Noise COUT = 1.0µF; 10Hz to 100kHz 340 550 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. May 2008 5 M9999-051508 Micrel, Inc. MIC5335 Typical Characteristics May 2008 6 M9999-051508 Micrel, Inc. MIC5335 Functional Characteristics May 2008 7 M9999-051508 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: 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. 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: Applications Information Enable/Shutdown The MIC5335 comes with dual active-high enable pins that allow each regulator to be enabled 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 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. ⎛ 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. 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. 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. 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. 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 on each 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) 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. May 2008 ⎞ ⎟ ⎟ ⎠ 8 M9999-051508 Micrel, Inc. MIC5335 TA=86°C Therefore, a 2.8V/2.5V application with 300mA at each output current can accept an ambient operating temperature of 86°C in a 1.6mm x 1.6mm Thin MLF® package. For a full discussion of heat sinking and May 2008 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 9 M9999-051508 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. May 2008 10 M9999-051508