NJU7747/48 LOW DROPOUT VOLTAGE REGULATOR GENERAL DISCRIPTION NJU7747/48 is a low dropout voltage regulator with ON/OFF control. Advanced CMOS technology achieves ultra low quiescent current. SC-82AB package and 0.1µF small output capacitor make the NJU7747/48 suitable for space conscious applications. NJU7748 features shunt switch which improves turn off response of output voltage when ON/OFF control is used. PACKAGE OUTLINE NJU7747/48F FEATURES Ultra Low quiescent Current Iq=1.5µA typ.(IO=0mA) Output capacitor with 0.1uF ceramic capacitor Output Current IO(max.)=100mA High Precision Output VO±1.0% Low Dropout Voltage 0.17V typ. (IO=40mA, VO=3V version) With ON/OFF Control (Active High) With Output Shunt Switch Only NJU7748 Internal Short Circuit Current Limit CMOS Technology Package Outline SC-82AB PIN CONFIGURATION 4 3 1 2 PIN FUNCTION 1.CONTROL 2.GND 3. VOUT 4. VIN NJU7747/48F4 EQUIVALENT CIRCUIT VIN CONTROL VOUT Output Control CONTROL Vref GND Current Limit VOUT Output Control Vref Current Limit GND NJU7747 Ver.2004-12-22 VIN NJU7748 -1- NJU7747/48 OUTPUT VOLTAGE RANK LIST (* : Under Development) DEVICE NAME VOUT DEVICE NAME VOUT NJU774*F4-15 1.5V NJU774*F4-28 2.8V NJU774*F4-18 1.8V NJU774*F4-03 3.0V NJU774*F4-19 1.9V NJU774*F4-33 3.3V NJU774*F4-02 2.0V (*) NJU774*F4-37 3.7V NJU774*F4-25 2.5V NJU774*F4-05 5.0V NJU774*F4-27 2.7V ABSOLUTE MAXIMUM RATINGS (Ta=25°C) PARAMETER SYMBOL RATINGS UNIT Input Voltage VIN +10 V Control Voltage VCONT +10(*1) V Power Dissipation PD 250(*2) mW Operating Temperature Topr −40 ∼ +85 °C Storage Temperature Tstg −40 ∼ +125 °C Output Sink Current 10 mA IO at OFF-state(*3) (*1) When input voltage is less than +10V, the absolute maximum control voltage is equal to the input voltage. (*2) Mounted on glass epoxy board based on EIA/JEDEC. (114.3x76.2x1.6mm: 2Layers) (*3): This maximum rating is applied to NJU7748. ELECTRICAL CHARACTERISTICS (VIN=VO+1V, CIN=0.1µF, CO=0.1µF, Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. −1.0% TYP. – MAX. +1.0% UNIT V Output Voltage Input Voltage VO VIN IO=30mA – – 6 V Quiescent Current Quiescent Current at Control OFF Output Current Short Circuit Limit IQ IO =0mA, VCONT=VIN, Except ICONT – 1.5 3.5 µA IQ(OFF) VCONT=0V – 0.1 1 µA IO ILIM VO−0.3V VO=0V 100 – – 25 – – mA mA Line Regulation ∆VO /∆VIN – – 0.30 %/V Load Regulation ∆VO /∆VO – – 0.15 %/mA – – 0.19 0.19 0.60 0.29 V V 2.5V≤VO≤2.7V 2.8V≤VO≤3.3V – – 0.18 0.27 V 0.17 0.26 V 3.4V≤VO≤5.0V – 0.16 0.24 V – ±100 – ppm/°C 2 5 10 MΩ 1.6 0 – – VIN 0.3 V V – 300 – Ω Dropout Voltage ∆VI-O Average Temperature Coefficient of Output Voltage Pull-down Resistance RCONT Control Voltage for ON-State Control Voltage for OFF-State VCONT(ON) VCONT(OFF) Pull-down Resistance at OFF-state(*4) RO(OFF) ∆VO /∆Ta VIN= VO+1V∼VO+6.0V(VO<3.0V) VIN= VO+1V∼9.0V(VO≥3.0V), IO=30mA Io=0∼100mA 1.5V≤VO≤2.0V Io=40mA 2.0V≤VO≤2.4V Io=60mA Ta=0∼85°C, IO=10mA VCONT=0V (VO=3.0V Version) (*4) This electrical characteristics is applied to NJU7748. The above specification is a common specification for all voltages. Therefore, it may be different from the individual specification for a specific output Voltage. -2- Ver.2004-12-22 NJU7747/48 TEST CIRCUIT A IIN VOUT VIN VIN IOUT V VOUT NJU7747/48 0.1µF 0.1µF A ICONT (Ceramic) CONTROL GND V VCONT TYPICAL APPLICATION 1 In case that ON/OFF Control is not required: VOUT VIN VOUT VIN CIN 0.1µF NJU7747/48 CO 0.1µF CONTROL GND Connect control terminal to VIN terminal. 2 In use of ON/OFF Control VOUT VIN VOUT VIN CIN 0.1µF NJU7747/48 CO 0.1µF CONTROL GND State of control terminal: ● “H” → output is enabled. ● “L” or “open” → output is disabled. Ver.2004-12-22 -3- NJU7747/48 POWER DISSIPATION vs. AMBIENT TEMPERATURE NJU7747/48F4 Power Dissipation (Topr=-40～+85℃,Tj=125℃) Power Dissipation PD(mW) 500 400 On Board(114.3×76.2×1.6mm, FR-4) 300 200 100 0 -50 -25 0 25 50 75 100 Ambient Temperature Ta(℃) [CAUTION] The specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. -4- Ver.2004-12-22