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NJM2872 Dataheets PDF



Part Number NJM2872
Manufacturers New Japan Radio
Logo New Japan Radio
Description LOW DROPOUT VOLTAGE REGULATOR
Datasheet NJM2872 DatasheetNJM2872 Datasheet (PDF)

NJM2871/A, NJM2872/A LOW DROPOUT VOLTAGE REGULATOR s GENERAL DESCRIPTION The NJM2871/A, NJM2872/A are low dropout voltage regulators designed for cellular phone application. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. s PACKAGE OUTLINE NJM2871F/AF NJM2872F/AF s FEATURES qHigh Ripple Rejection 70dB typ. (f=1kHz) qOutput Noise Voltage Vno=30µVrms (Cp=0.01µF) qOutput capacitor with 1.0uF ceramic capacitor (Vo≥2.7V) qOutput Current Io(max.)=150m.

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NJM2871/A, NJM2872/A LOW DROPOUT VOLTAGE REGULATOR s GENERAL DESCRIPTION The NJM2871/A, NJM2872/A are low dropout voltage regulators designed for cellular phone application. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. s PACKAGE OUTLINE NJM2871F/AF NJM2872F/AF s FEATURES qHigh Ripple Rejection 70dB typ. (f=1kHz) qOutput Noise Voltage Vno=30µVrms (Cp=0.01µF) qOutput capacitor with 1.0uF ceramic capacitor (Vo≥2.7V) qOutput Current Io(max.)=150mA qHigh Precision Output Vo±2% Vo±1%:A Version qLow Dropout Voltage 0.10V typ. (Io=60mA) qON/OFF Control (Active High) qOperating Voltage Range +2.5V∼+14V (Vo≤2.0V version) qInternal Short Circuit Current Limit qInternal Thermal Overload Protection qBipolar Technology qPackage Outline MTP5 (MTP5:2.8×2.9×1.1mm) s PIN CONFIGURATION 1 2 3 4 5 NJM2871F/AF PIN FUNCTION 5 1. CONTROL (Active High) 1 2 2. GND 3. NOISE BYPASS 3 4 4. VOUT 5. VIN NJM2872F/AF PIN FUNCTION 1.VIN 2.GND 3.CONTROL (Active High) 4.NOISE BYPASS 5.VOUT s EQUIVALENT CIRCUIT VIN Cont Thermal Protection VOUT Noise Bypass Bandgap Reference GND NJM2871/A, NJM2872/A (Ta=25°C) RATINGS UNIT +14 V +14(note 1) V 200 mW −40 ∼ +85 °C −40 ∼ +125 °C (note 1) When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage. s ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage VCONT Power Dissipation PD Operating Temperature Topr Storage Temperature Tstg s ELECTRICAL CHARACTERISTICS (Vo>2.0V version : VIN=Vo+1V, CIN=0.1µF, Co=1.0uF: Vo≥2.7V (Co=2.2uF: Vo≤2.6V), Cp=0.01µF, Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Io=30mA -2% +2% V − Output Voltage Vo Io=30mA, A Version -1% +1% V − Io=0mA, expect Icont Quiescent Current 120 180 IQ µA − Quiescent Current VCONT=0V 100 nA IQ(OFF) − − at Control OFF Output Current Io 150 200 mA Vo−0.3V Line Regulation 0.10 %/V ∆Vo/∆VIN VIN=Vo+1V ∼ Vo+6V, Io=30mA − − Load Regulation 0.03 %/mA ∆Vo/∆Io Io=0 ∼ 100mA − − Dropout Voltage Io=60mA 0.10 0.18 V ∆VI−O − ein=200mVrms,f=1kHz, Io=10mA Ripple Rejection RR 70 dB − − VIN=Vo+1V, Vo=3V Version Average Temperature Ta=0∼85°C, Io=10mA, 0.2 mV/°C − − Coefficient of Output Voltage ∆Vo/∆Ta Vo=3V Version f=10Hz∼80kHz, Io=10mA, Output Noise Voltage VNO 30 µVrms − − Vo=3V Version Control Voltage for ON-state VCONT(ON) 1.6 V − − Control Voltage for OFF-state VCONT(OFF) 0.6 V − − (Vo≤2.0V version : VIN=Vo+1V, CIN=0.1µF, Co=4.7uF, Cp=0.01µF, Ta=25°C) PARAMETER SYMBOL TEST CONDITION Io=30mA Output Voltage Vo Io=30mA, A Version Io=0mA, expect Icont Quiescent Current IQ Quiescent Current VCONT=0V IQ(OFF) at Control OFF Output Current Io Vo−0.3V Line Regulation ∆Vo/∆VIN VIN=Vo+1V ∼ Vo+6V, Io=30mA Load Regulation ∆Vo/∆Io Io=0 ∼ 100mA ein=200mVrms,f=1kHz, Io=10mA Ripple Rejection RR VIN=Vo+1V, Vo=1.8V Version Average Temperature Ta=0∼85°C, Io=10mA, Coefficient of Output Voltage ∆Vo/∆Ta Vo=1.8V Version f=10Hz∼80kHz, Io=10mA, Output Noise Voltage VNO Vo=1.8V Version Control Voltage for ON-state VCONT(ON) Control Voltage for OFF-state VCONT(OFF) MIN. -2% -1% − − 150 − − − − − TYP. − − 120 − 200 − − 75 0.13 22 MAX. +2% +1% 180 100 0.10 0.03 − − − UNIT V V µA nA mA %/V %/mA dB mV/°C µVrms V V 1.6 − − 0.6 − − (note 2) 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. NJM2871/A, NJM2872/A s OUTPUT VOLTAGE RANK LIST Device Name VOUT Device Name 1.5V NJM287××15 NJM287××285 1.8V NJM287××29 NJM287××18 2.1V NJM287××03 NJM287××21 2.5V NJM287××31 NJM287××25 2.6V NJM287××26 NJM287××32 2.7V NJM287××27 NJM287××33 2.8V NJM287××28 NJM287××34 VOUT 2.85V 2.9V 3.0V 3.1V 3.2V 3.3V 3.4V Device Name NJM287××35 NJM287××38 NJM287××04 NJM287××05 VOUT 3.5V 3.8V 4.0V 5.0V s TEST CIRCUIT A VIN IIN VIN VOUT IOUT 0.1uF 1.0uF *note1 (ceramic) V VOUT A V VCONT ICONT CONTROL GND NOISE BYPASS Cp=0.01uF *note1 2.0V < Vo ≤ 2.6V version : Co=2.2uF(ceramic) Vo ≤ 2.0V version : Co=4.7uF(ceramic) NJM2871/A, NJM2872/A s TYPICAL APPLICATION x In case that ON/OFF Control is not required: VIN VIN 0.1uF VOUT VOUT 1.0uF *note1 (ceramic) R (0∼300kΩ) CONTROL GND NOISE BYPASS Cp=0.01uF *note1 2.0V < Vo ≤ 2.6V version : Co=2.2uF(ceramic) Vo ≤ 2.0V version : Co=4.7uF(ceramic) Connect control terminal to VIN terminal The quiescent current can be reduced by using a resistance “R”. Instead, it increases the minimum operating voltage. For further information, please refer to Figure “Output Voltage vs. Control Voltage”. y In use of ON/OFF CONTROL: VIN VIN VOUT VOUT 0.1uF R CONTROL GND NOISE BYPASS 1.0uF *note1 (ceramic) Cp=0.01uF *note1 2.0V < Vo ≤ 2.6V version : Co=2.2uF(ceramic) Vo ≤ 2.0V version : Co=4.7uF(ceramic) State of control terminal: •“H”→ output is enabled. • “L” or “open” → output is disabled. ✱Noise bypass Capacitance Cp Noise bypass capacitance Cp reduces noise generated by band-gap reference circuit. No.


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