NJM2871/A, NJM2872/A LOW DROPOUT VOLTAGE REGULATOR ■ 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. ■ PACKAGE OUTLINE NJM2871F/AF NJM2872F/AF ■ FEATURES ●High Ripple Rejection 70dB typ. (f=1kHz) ●Output Noise Voltage Vno=30µVrms (Cp=0.01µF) ●Output capacitor with 1.0uF ceramic capacitor (Vo≥2.7V) ●Output Current Io(max.)=150mA ●High Precision Output Vo±2% Vo±1%:A Version ●Low Dropout Voltage 0.10V typ. (Io=60mA) ●ON/OFF Control (Active High) ●Operating Voltage Range +2.5V∼+14V (Vo≤2.0V version) ●Internal Short Circuit Current Limit ●Internal Thermal Overload Protection ●Bipolar Technology ●Package Outline MTP5 (MTP5:2.8×2.9×1.1mm) ■ PIN CONFIGURATION 1 5 2 3 4 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 ■ EQUIVALENT CIRCUIT VOUT VIN Cont Thermal Protection Noise Bypass Bandgap Reference GND NJM2871/A, NJM2872/A ■ ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage VCONT Power Dissipation PD Operating Temperature Topr Storage Temperature Tstg (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. ■ 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% − TYP. − − 120 MAX. +2% +1% 180 UNIT V V µA − − 100 nA 150 − − 200 − − 0.10 0.03 mA %/V %/mA − 75 − dB − 0.13 − mV/°C − 22 − µVrms 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. V V NJM2871/A, NJM2872/A ■ 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 Device Name NJM287××35 NJM287××38 NJM287××04 NJM287××05 VOUT 3.5V 3.8V 4.0V 5.0V 3.2V 3.3V 3.4V ■ TEST CIRCUIT A IIN VIN VOUT IOUT VIN 1.0uF *note1 (ceramic) 0.1uF A ICONT CONTROL NOISE BYPASS Cp=0.01uF V VCONT GND *note1 2.0V < Vo ≤ 2.6V version : Co=2.2uF(ceramic) Vo ≤ 2.0V version : Co=4.7uF(ceramic) V VOUT NJM2871/A, NJM2872/A ■ TYPICAL APPLICATION ① In case that ON/OFF Control is not required: VIN VIN VOUT VOUT 0.1uF 1.0uF *note1 (ceramic) R (0∼300kΩ) NOISE BYPASS CONTROL Cp=0.01uF GND *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”. ② In use of ON/OFF CONTROL: VIN VIN VOUT VOUT 1.0uF *note1 (ceramic) 0.1uF R CONTROL NOISE BYPASS GND 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. Noise level and ripple rejection will be improved when larger Cp is used. Use of smaller Cp value may cause oscillation. Use the Cp value of 0.01uF greater to avoid the problem. NJM2871/A, NJM2872/A ■ ELECTRICAL CHARACTERISTICS NJM2871/A, NJM2872/A ■ ELECTRICAL CHARACTERISTICS NJM2871/A, NJM2872/A ■ ELECTRICAL CHARACTERISTICS NJM2871/A, NJM2872/A [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.