MIC5303-2.1YMT-TR

MIC5303 Single 300mA CMOS Ultra Small ULDO™ General Description Features The MIC5303 is an ultra small, Ultra Low Dropout CMOS regulator, ULDO™ that is ideal for today’s most demanding portable applications including cellular phone RF power, camera modules, imaging sensors for digital still and video cameras, PDAs, portable media players (PMP) and PC cameras where board space is limited. It offers extremely low dropout voltage, very low output noise and can operate from a 2.3V to 5.5V input while delivering up to 300mA. It offers 2% initial accuracy, low ground current (typically 85µA total), thermal and current limit protection. The MIC5303 can also be put into a zero-off-mode current state, drawing no current when disabled. The MIC5303 is available in the ultra small 4-pin 1.2mm x 1.6mm Thin MLF® package, occupying only 1.92mm2 of PCB area, a 50% reduction in board area compared to SC-70 and 2mm x 2mm MLF® packages. It’s operating junction temperature range is –40°C to +125°C and is available in fixed output voltages in lead-free (RoHS compliant) Thin MLF® package. Data sheets and support documentation can be found on Micrel’s web site at www.micrel.com. • • • • • • • • • Ultra Small 1.2mm x 1.6mm Thin MLF® package Low Dropout Voltage: 100mV at 300mA Output noise 120µVrms Input voltage range: 2.3V to 5.5V 300mA guaranteed output current Stable with ceramic output capacitors Low quiescent current 85µA total 35µs turn-on time High output accuracy – ±2% initial accuracy – ±3% over temperature • Thermal shutdown and current limit protection Applications • • • • • • Mobile Phones PDAs GPS Receivers Portable Media Players Portable Electronics Digital Still & Video Cameras Typical Application MIC5303-x.xYMT 150 VIN 125 VOUT 100 EN 1µF Dropout Voltage vs. Output Current GND 1µF 75 50 25 RF LDO Application 0 0 VOUT = 2.8V COUT = 1µF 50 100 150 200 250 300 OUTPUT CURRENT (mA) ULDO is a trademark of Micrel, Inc. 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 May 2008 M9999-051508-D Micrel, Inc. MIC5303 Block Diagram VIN VOUT EN VREF QuickStart Thermal Shutdown Error LDO Amp Current Limit GND MIC5303 Block Diagram May 2008 2 M9999-051508-D Micrel, Inc. MIC5303 Ordering Information(1) Part Number Marking Code MIC5303-1.5YMT 1M5 Voltage Temperature Range 1.5V Package –40°C to +125°C Lead Finish 4-Pin 1.2mm x 1.6mm Thin MLF ® Pb-Free ® Pb-Free MIC5303-1.8YMT 1M8 1.8V –40°C to +125°C 4-Pin 1.2mm x 1.6mm Thin MLF MIC5303-2.1YMT 2M1 2.1V –40°C to +125°C 4-Pin 1.2mm x 1.6mm Thin MLF® Pb-Free –40°C to +125°C 4-Pin 1.2mm x 1.6mm Thin MLF ® Pb-Free ® Pb-Free MIC5303-2.5YMT 2M5 2.5V MIC5303-2.6YMT 2M6 2.6V –40°C to +125°C 4-Pin 1.2mm x 1.6mm Thin MLF MIC5303-2.8YMT 2M8 2.8V –40°C to +125°C 4-Pin 1.2mm x 1.6mm Thin MLF® Pb-Free –40°C to +125°C 4-Pin 1.2mm x 1.6mm Thin MLF ® Pb-Free ® Pb-Free MIC5303-2.85YMT 2MN 2.85V MIC5303-2.9YMT 2M9 2.9V –40°C to +125°C 4-Pin 1.2mm x 1.6mm Thin MLF MIC5303-3.0YMT 3M0 3.0V –40°C to +125°C 4-Pin 1.2mm x 1.6mm Thin MLF® Pb-Free –40°C to +125°C ® Pb-Free MIC5303-3.3YMT 3M3 3.3V 4-Pin 1.2mm x 1.6mm Thin MLF Note: 1. Other voltages available. Contact Micrel Marketing for details. Pin Configuration EN 1 4 VOUT GND 2 3 VIN 4-Pin 1.2mm x 1.6mm Thin MLF® (MT) Pin Description Pin Number Pin Name Pin Function 1 EN 2 GND Ground 3 VIN Supply Input 4 VOUT Output Voltage HS Pad EPAD Exposed heatsink pad connected to ground internally. May 2008 Enable Input. Active High. High = on, low = off. Do not leave floating. 3 M9999-051508-D Micrel, Inc. MIC5303 Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VIN) ............................................. 0V to +6V Enable Input (VEN) ................................................ 0V to +6V Power Dissipation(3)...................................Internally Limited Lead Temperature (soldering, 5 sec.)........................ 260°C Junction Temperature (TJ) ........................–40°C to +125°C Storage Temperature (Ts) .........................–65°C to +150°C Supply voltage (VIN) ..................................... +2.3V to +5.5V Enable Input (VEN) .................................................. 0V to VIN Junction Temperature (TA) ........................ –40°C to +125°C Junction Thermal Resistance Thin MLF® -4 (θJA) ...........................................173°C/W Electrical Characteristics(4) VIN = VOUT + 1V; COUT = 1.0µF; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C to +125°C, unless noted. Parameter Condition Output Voltage Accuracy Variation from nominal VOUT Variation from nominal VOUT; –40°C to +125°C VIN = VOUT +1V to 5.5V; IOUT = 100µA Line Regulation Load Regulation(5) Dropout Voltage(6) Ground Pin Current(7) Ground Pin Current in Shutdown Ripple Rejection Current Limit Output Voltage Noise Enable Input Enable Input Voltage Enable Input Current Turn-on Time Min Typ Max Units 0.02 +2 +3 0.3 0.6 2.0 % % %/V –2 –3 IOUT = 100µA to 150mA IOUT = 100µA IOUT = 50mA IOUT = 150mA IOUT = 300mA IOUT = 0 to 300mA, EN = High VEN = 0V 0.5 0.1 15 50 100 85 0.1 f = up to 1kHz; COUT = 1.0µF f = 1kHz – 20kHz; COUT = 1.0µF VOUT = 0V COUT =1µF, 10Hz to 100kHz 65 42 350 460 120 35 100 200 120 2 850 0.2 Logic Low Logic High VIL < 0.2V VIH > 1.0V COUT = 1.0µF 1.1 0.01 0.01 35 100 % mV mV mV mV µA µA dB dB mA µVRMS V V µA µA µs 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. Specification for packaged product only. 5. 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. 6. 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. 7. 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. May 2008 4 M9999-051508-D Micrel, Inc. MIC5303 Typical Characteristics Ground Pin Current vs. Output Current 100 90 90 88 86 84 80 70 60 30 VIN = VOUT + 1V VOUT = 2.8V COUT = 1µF 20 10 0 0 90 50 100 150 200 250 300 OUTPUT CURRENT (mA) Power Supply Rejection Ratio 160 50mA 80 70 120 150mA -50 300mA -40 0 3.0 150 300mA 80 60 -20 40 VIN = VOUT + 1V -10 VOUT = 2.8V COUT = 1µF 0 0.1 1 10 100 FREQUENCY (kHz) 150mA Output Voltage vs. Output Current 0 3.2 50mA 2.0 2.80 Output Voltage vs. Supply Voltage 3.00 1.2 2.78 2.77 0 500 VIN = VOUT + 1V VOUT = 2.8V COUT = 1µF 100µA 50 100 150 200 250 300 OUTPUT CURRENT (mA) Current Limit vs. Input Voltage 300mA 0.4 10 50 100 150 200 250 300 OUTPUT CURRENT (mA) Output Voltage vs. Temperature 2.80 2.75 2.70 2.65 2.60 0.8 0 0 VOUT = 2.8V COUT = 1µF 2.95 2.90 2.85 1.6 2.79 75 0 0 20 40 60 80 TEMPERATURE (°C) 2.4 2.81 Dropout Voltage vs. Output Current 125 25 100µA 2.8 2.82 5.5 50 20 1,000 3.5 4.0 4.5 5.0 SUPPLY VOLTAGE (V) 100 100 -30 2.83 10 Dropout Voltage vs. Temperature -60 100µA 30 20 20 40 60 80 TEMPERATURE (°C) VOUT = 2.8V 140 COUT = 1µF 300mA 50 40 VIN = VOUT + 1V VOUT = 2.8V COUT = 1µF -70 Ground Pin Current vs. Supply Voltage 60 100µA 78 76 74 72 70 100 300mA 82 80 50 40 -80 Ground Pin Current vs. Temperature COUT = 1µF 1 2 3 4 5 SUPPLY VOLTAGE (V) 6 2.55 2.50 VIN = VOUT + 1V VOUT = 2.8V COUT = 1µF IOUT = 100µA 20 40 60 80 TEMPERATURE (°C) Output Noise Spectral Density 490 480 470 1 460 0.1 450 440 430 420 410 400 3.0 May 2008 VOUT = 2.8V COUT = 1µF 3.5 4.0 4.5 5.0 INPUT VOLTAGE (V) 5.5 0.01 VIN = VOUT + 1V VOUT = 2.8V COUT = 1µF 0.001 0.01 0.1 1 10 100 1,000 FREQUENCY (kHz) 5 M9999-051508-D Micrel, Inc. MIC5303 Functional Characteristics Load Transient Response Enable (1V/div) Output Voltage (50mV/div) Enable Turn-On 300mA VIN = VOUT + 1V VOUT = 2.8V Output Current (100mA/div) Output Voltage (1V/div) COUT = 1µF VIN = VOUT + 1V VOUT = 2.8V COUT = 1µF Time (10µs/div) Time (40µs/div) Line Transient Response 5V Input Voltage (2V/div) 4V VIN = VOUT + 1V VOUT = 2.8V COUT = 1µF Output Voltage (50mV/div) IOUT = 10mA Time (40µs/div) May 2008 6 M9999-051508-D Micrel, Inc. MIC5303 The actual power dissipation of the regulator circuit can be determined using the equation: Application Information Enable/Shutdown The MIC5303 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. PD = (VIN – VOUT) IOUT + VIN IGND Because this device is CMOS and the ground current is typically