MIC37302BUTR

MIC37300/01/02/03 3.0A, Low-Voltage µCap LDO Regulator General Description Features The Micrel MIC37300/01/02/03 is a 3.0A low-dropout linear voltage regulator that provides a low voltage, high current output with a minimum number of external components. It offers high precision, ultra-low dropout (500mV over temperature), and low ground current. • 3.0A minimum guaranteed output current • 500mV maximum dropout voltage over temperature − Ideal for 3.0V to 2.5V conversion − Ideal for 2.5V to 1.8V, 1.65V, or 1.5V conversion • Stable with ceramic or tantalum capacitor • Wide input voltage range − VIN: 2.25V to 6.0V • +1.0% initial output tolerance • Fixed and adjustable output voltages: − MIC37300: 3-pin S-Pak fixed voltages − MIC37301: 5-pin S-Pak or 8-pin ePad SOIC fixed voltages with flag − MIC37302: 5-pin adjustable voltage − MIC37303: 8-pin ePad SOIC, DFN adjustable voltage with flag • Excellent line and load regulation specifications • Thermal-shutdown and current-limit protection • Reverse-leakage protection • Low profile S-Pak package The MIC37300/01/02/03 operates from an input of 2.25V to 6.0V. It is designed to drive digital circuits requiring lowvoltage at high currents (i.e., PLDs, DSP, microcontroller, etc.). It is available in fixed and adjustable output voltages. Fixed voltages include 1.5V, 1.8V, 2.5V, and 3.3V. The adjustable version is capable of 1.24V to 5.5V. Features of the MIC37300/01/02/03 LDO include thermal and current-limit protection, and reverse-current protection. Logic enable and error flag pins are available on the 5-pin version. Junction temperature range of the MIC37300/01/02/03 is from –40°C to +125°C. For applications requiring input voltage greater than 6.0V, see the MIC3910x, MIC3915x, MIC3930x, and MIC3950x LDOs. Datasheets and support documentation are available on Micrel’s website at: www.micrel.com. Applications • • • • • LDO linear regulator for low-voltage digital IC PC add-in cards High-efficiency linear power supplies SMPS post regulator Battery charger Typical Application Fixed 2.5 Regulator Adjustable Regulator Super ßeta PNP is a registered 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 February 24, 2015 Revision 2.0 Micrel, Inc. MIC37300/01/02/03 Ordering Information Part number (1) Enable Voltage Flag Junction Temperature Range Package (1) No 1.5V No –40°C to +125°C S-Pak-3 RoHS Compliant / Pb-Free MIC37300-1.5WR (1) MIC37300-1.65WR No 1.65V No –40°C to +125°C S-Pak-3 (1) No 1.8V No –40°C to +125°C S-Pak-3 (1) No 2.5V No –40°C to +125°C S-Pak-3 (1) MIC37300-3.3WR No 3.3V No –40°C to +125°C S-Pak-3 MIC37301-1.5YME Yes 1.5V Yes –40°C to +125°C ePad SOIC-8 MIC37301-1.5WR Yes 1.5V Yes –40°C to +125°C S-Pak-5 MIC37301-1.8YME Yes 1.8V Yes –40°C to +125°C ePad SOIC-8 MIC37301-1.8WR Yes 1.8V Yes –40°C to +125°C S-Pak-5 MIC37301-2.5YME MIC37300-1.8WR MIC37300-2.5WR (1) (1) Yes 2.5V Yes –40°C to +125°C ePad SOIC-8 (1) Yes 2.5V Yes –40°C to +125°C S-Pak-5 (1) MIC37301-2.5WR MIC37301-3.3WR Yes 3.3V Yes –40°C to +125°C S-Pak-5 (1) Yes ADJ No –40°C to +125°C S-Pak-5 (1) MIC37302WU Yes ADJ No –40°C to +125°C TO-263-5 MIC37303YME Yes ADJ Yes –40°C to +125°C ePad SOIC-8 MIC37303YML Yes ADJ Yes –40°C to +125°C 3mm × 3mm DFN MIC37302WR Note: 1. RoHS-compliant with ‘high-melting solder’ exemption. February 24, 2015 2 Revision 2.0 Micrel, Inc. MIC37300/01/02/03 Pin Configuration S-PAK-5 (R) (Top View) S-PAK-3 (R) (Top View) 5 4 3 2 1 FLG/ADJ VOUT GND VIN EN GND 1 8 FLG EN 2 7 VOUT/ADJ VIN 3 6 VOUT VIN 4 5 VOUT TO-263-5 (U) (Top View) e-Pad SOIC-8 (ME) (Top View) 3mm × 3mm DFN (ML) (Top View) Pin Description Pin Number S-PAK-5 TO-263-5 Pin Number S-PAK-3 Pin Number ePad SOIC-8 DFN Pin Name 1 — 2 EN Enable input: CMOS-compatible input. Logic HIGH = enable; Logic LOW = shutdown. Do not leave floating. 2 1 3, 4 VIN Input voltage that supplies current to the output power device. 3 2 1 GND Ground: TAB is connected to ground. 4 3 VOUT Regulator output. 5 (Fixed) — 8 FLG Error flag (output): Open collector output. Active LOW indicates an output fault condition. 5 (Adj.) — 7 (Adj.) ADJ Adjustable regulator feedback input: Connect to resistor voltage driver. — — EP ePad Connect to GND for best thermal performance. February 24, 2015 5, 6, 7 (Fixed) 5, 6 (Adj.) Pin Function 3 Revision 2.0 Micrel, Inc. MIC37300/01/02/03 Absolute Maximum Ratings(2) Supply Voltage (VIN) ...................................................... 6.5V (4) Enable Input Voltage (VEN) ......................................... 6.5V (4) Power Dissipation (PD) ........................... Internally Limited Junction Temperature (TJ) ..................–40°C ≤ TJ ≤ +125°C Storage Temperature (TS) ...................–65°C ≤ TJ ≤ +150°C Lead Temperature (soldering, 10s) ............................ 260°C (5) ESD Rating .................................................................. 2kV Operating Ratings(3) Supply Voltage (VIN) ................................ 2.25V to 6.0V Enable Input Voltage (VEN) ........................... 0V to 6.0V Junction Temperature (TJ) ........... –40°C ≤ TJ ≤ +125°C Package Thermal Resistance S-Pak (θJC) ................................................5.5°C/W TO-263-5 (θJC) ..........................................6.3°C/W ePad SOIC-8 (θJC) .....................................16°C/W 3mm × 3mm DFN (θJC) ..............................29°C/W Electrical Characteristics(6) TA = 25°C with VIN = VOUT + 1V; VEN = VIN; IL = 10mA; bold values indicate –40°C < TJ < +125°C, unless noted. Parameter Output Voltage Accuracy Condition Min. IL = 10mA 10mA < IOUT < IL(max), VOUT + 1 ≤ VIN ≤ 6V Typ. Max. Units -1 +1 % -2 +2 % Output Voltage Line Regulation VIN = VOUT + 1.0V to 6.0V; IL = 10mA 0.02 0.5 % Output Voltage Load Regulation IL = 10mA to 3A 0.2 1 % IL = 1.5A (ePad SOIC-8, DFN) 175 350 400 mV IL = 3A (ePad SOIC-8, DFN) 300 500 550 mV 27 40 50 mA mA VIN – VOUT Dropout Voltage Ground Pin Current (7) (8) IL = 3A Ground Pin Current in Shutdown VIL ≤ 0.5V, VIN = VOUT +1V 1.0 5 µA Current Limit VOUT = 0V 4.75 6.5 A Start-Up Time VEN = VIN, IOUT = 10mA, COUT = 47µF 170 500 µs Notes: 2. Exceeding the absolute maximum rating may damage the device. 3. The device is not guaranteed to function outside its operating rating. 4. PD(max) = (TJ(max) – TA)/θJA, where θJA, depends upon the printed circuit layout. See “Application Information.” 5. Devices are ESD sensitive. Handling precautions recommended. 6. Specification for packaged product only. 7. VDO = VIN – VOUT when VOUT decreases to 98% of its nominal output voltage with VIN = VOUT + 1V. For output voltages below 1.75, dropout voltage specification does not apply due to a minimum input operating voltage of 2.25V. 8. IGND is the quiescent current. IIN = IGND + IOUT. February 24, 2015 4 Revision 2.0 Micrel, Inc. MIC37300/01/02/03 Electrical Characteristics(6) (Continued) TA = 25°C with VIN = VOUT + 1V; VEN = VIN; IL = 10mA; bold values indicate –40°C < TJ < +125°C, unless noted. Parameter Condition Min. Regulator enable 2.25 Typ. Max. Units Enable Input Enable Input Threshold 0.8 Regulator shutdown VIL ≤ 0.8V (Regulator shutdown) Enable Pin Input Current VIH ≥ 2.25V (Regulator enable) 1 15 V 2 4 µA 30 75 µA 1 2 µA 400 500 mV Flag Output IFLG(LEAK) VOH = 6V VFLG(LO) VIN = 2.25V, IOL = 250µA (9) 210 Low Threshold, % of VOUT below nominal VFLG 93 Hysteresis 2 High Threshold, % of VOUT below nominal % 99.2 MIC37302 Only 1.228 1.215 Reference Voltage Adjust Pin Bias Current 1.240 1.252 1.265 V 40 80 120 nA Note: 9. For a 2.5V device, VIN = 2.250V (device is in dropout). February 24, 2015 5 Revision 2.0 Micrel, Inc. MIC37300/01/02/03 Typical Characteristics February 24, 2015 6 Revision 2.0 Micrel, Inc. MIC37300/01/02/03 Typical Characteristics (Continued) February 24, 2015 7 Revision 2.0 Micrel, Inc. MIC37300/01/02/03 Functional Characteristics February 24, 2015 8 Revision 2.0 Micrel, Inc. MIC37300/01/02/03 Applications Information Then the heat sink thermal resistance is determined with Equation 2: The MIC37300/01/02/03 is a high-performance lowdropout voltage regulator suitable for moderate to high-current regulator applications. Its 500mV dropout voltage at full load and over temperature makes it especially valuable in battery-powered systems and as high-efficiency noise filters in post-regulator applications. Unlike older NPN-pass transistor designs, where the minimum dropout voltage is limited by the based-to-emitter voltage drop and collector-toemitter saturation voltage, dropout performance of the PNP output of these devices is limited only by the low VCE saturation voltage. θSA = ((TJ(max) – TA)/PD) – (θJC + θCS) where TJ(max)