NJM12856U2-18-TE1

NJM12856 LDO with Reverse Current Protection / Soft Start / Discharge Function GENERAL DESCRIPTION The NJM12856 is a low dropout regulator which achieves high ripple rejection, low noise and high speed response with the bipolar technology. Adjustable soft-start function is useful for reducing inrush current and controlling power-on sequence. Moreover the discharge function makes effective sequence control with the soft-start function. In addition, the reverse current protection makes external SBD unnecessary. ■ PACKAGE OUTLINE NJM12856U2 NJM12856DL3 FEATURE Operating Voltage Range 2.5V ~ 6.5V Output Voltage Accuracy VO 1.0% Output Current IO(min.)=1000mA Reverse Current Protection Adjustable soft-start Function Discharge Function ON/OFF Control Correspond to Low ESR capacitor (MLCC) Thermal Shutdown Circuit Over Current Protection Circuit Package Outline SOT-89-5, TO-252-5 PIN CONFIGRATION VOUT 1 5 VIN GND 2 2 GND CS 3 3 4 CONTROL NJM12856U2 5 CS 4 VOUT 3 GND 2 VIN CONTROL 1 NJM12856DL3 BLOCK DIAGRAM VIN CONTROL VOUT Reverse Current Protection Thermal Protection CS Bandgap Reference Over Current Protection GND Ver.2015-07-21 -1- NJM12856 OUTPUT VOLTAGE RANK LIST SOT-89-5 TO-252-5 Output Device Name Device Name Voltage NJM12856U2-15 1.5V NJM12856DL3-15 NJM12856U2-18 1.8V NJM12856DL3-18 NJM12856U2-25 2.5V NJM12856DL3-25 NJM12856U2-33 3.3V NJM12856DL3-33 NJM12856U2-05 5.0V NJM12856DL3-05 ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Pin Voltage VCONT Output Voltage VOUT Soft start Pin Voltage VCS Power Dissipation PD Junction Temperature Range Operating Temperature Range Storage Temperature Range Tj Topr Tstg Output Voltage 1.5V 1.8V 2.5V 3.3V 5.0V (Ta=25 C) MAXIMUM RATING UNIT -0.3 ~ +7 -0.3 ~ +7 -0.3 ~ +5.5 Vo 1.8V -0.3 ~ +7 Vo 1.8V -0.3 ~ +2.5 625(*1) SOT-89-5 2400(*2) 1190(*1) TO-252-5 3125(*2) -40 +150 -40 +125 -50 +150 V V V V V mW C C C 2 (*1): Mounted on glass epoxy board. (76.2 114.3 1.6mm:based on EIA/JDEC standard size, 2Layers, Cu area 100mm ) (*2): Mounted on glass epoxy board. (76.2 114.3 1.6mm:based on EIA/JDEC standard, 4Layers) (For 4Layers: Applying 74.2 74.2mm inner Cu area and a thermal via hole to a board based on JEDEC standard JESD51-5) Operating Voltage Range ：VIN=2.5V ~ 6.5V -2- Ver.2015-07-21 NJM12856 ELECTRICAL CHARACTERISTICS (Unless other noted, VIN = VO + 1V, CIN = 0.33µF, CO =0.47µF(CO=1.0µF :2.4V Vo 2.9V, CO=2.2µF :1.7V Vo 2.4V, Co=4.7µF :Vo 1.7V), Cs=0.01µF, Ta = 25°C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT -1.0% - +1.0% V Output Voltage VO IO=200mA Quiescent Current IQ IO = 0mA, except ICONT - 400 600 μA Quiescent Current at OFF-state IQ(OFF) VCONT = 0V - - 10 μA 1000 - - mA Output Current IO Line Regulation VO/ VIN VIN = VO + 1V ~ 6.5V, Io=200mA - - 0.15 %/V Load Regulation VO/ IO IO = 0 ~ 1000mA - - 0.003 %/mA IO=600mA - 0.20 0.28 V Ta= -40 ~ +125 C, IO=200mA - 50 - ppm/ C VIN =3.0V ein=200mVrms, f=1kHz, Io=10mA Vo=1.5V - 78 - Vo=1.8V - 76 - Vo=2.5V - 73 - Vo=3.3V - 72 - Vo=5.0V - 68 - Vo=1.5V - 17 - Vo=1.8V - 19 - Vo=2.5V - 24 - Vo=3.3V - 30 - Vo=5.0V - 42 - - 3 12 μA VCONT(ON) 1.6 - - V VCONT(OFF) - - 0.6 V VCONT=L→H, Io=200mA, Cs=0.022μF - 1.2 - msec VIN=2.5V, VCONT=0V, VO =0.5V 3 10 VIN=6.5V, VCONT=0V, VO =0.5V 15 25 Dropout Voltage (*3) Average Temperature Coefficient of Output Voltage Ripple Rejection VIO VO/ Ta VO 0.9 RR ein=200mVrms, f=1kHz, Io=10mA Output Noise Voltage Control Current Control Voltage at ON-state Control Voltage at OFF-state Soft Start Time Discharge Current at OFF-state VNO ICONT tS(ON) IDIS f=10Hz ~ 80kHz, Io=10mA VCONT =1.6V dB μVrms mA (*3): Except Output Voltage Rank less than 2.2V The above specification is a common specification for all output voltages. Therefore, it may be different from the individual specification for a specific output voltage. Ver.2015-07-21 -3- NJM12856 POWER DISSIPATION vs. AMBIENT TEMPERATURE NJM12856U2　PowerDissipation Power Dissipation PD(mW) (Topr=-40~+125°C,Tj=150°C) 3000 on 4 layers board 2500 2000 1500 1000 on 2 layers board 500 0 -50 -25 0 25 50 75 100 125 150 100 125 150 Temperature : Ta(°C) NJM12856DL3　PowerDissipation (Topr=-40~+125°C,Tj=150°C) Power Dissipation PD(mW) 3500 3000 on 4 layers board 2500 2000 1500 1000 on 2 layers board 500 0 -50 -25 0 25 50 75 Temperature : Ta(°C) TEST CIRCUIT A VIN IIN VIN 0.33μF VOUT (*4) 0.47μF NJM12856 (ceramic) A V VCONT ICONT IOUT V VOUT (ceramic) CONTROL GND Cs 0.01μF (ceramic) *4: 2.4V