NJM2871AF25-TE1

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,Vo=3V Version) Output Noise Voltage Vno=30µVrms typ.(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 SOT-23-5 PIN CONFIGURATION 5 4 1 2 3 PIN FUNCTION 1. CONTROL (Active High) 2. GND 3. NOISE BYPASS 4. VOUT 5. VIN NJM2871F/AF 5 4 1 2 3 PIN FUNCTION 1.VIN 2.GND 3.CONTROL (Active High) 4.NOISE BYPASS 5.VOUT NJM2872F/AF EQUIVALENT CIRCUIT VOUT VIN Cont Thermal Protection Bandgap Reference Noise Bypass GND Ver.2007-01-06 -1- NJM2871/A, NJM2872/A ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage VCONT (Ta=25°C) RATINGS UNIT +14 V +14(*1) V 350(*2) Power Dissipation PD SOT-23-5 mW 200(*3) Operating Temperature Topr −40 ∼ +85 °C Storage Temperature Tstg −40 ∼ +125 °C (*1): When input voltage is less than +14V, 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): Device itself. Operating voltage VIN=+2.5 ∼ +14V (In case of Vo2.0V version : VIN=Vo+1V, CIN=0.1µF, Co=1.0µF: Vo≥2.7V (Co=2.2µF: 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 − − Vo=3V Version Average Temperature Ta=0∼85°C, Io=10mA, ±50 ∆Vo/∆Ta − − ppm/°C Coefficient of Output Voltage Vo=3V Version f=10Hz∼80kHz, Io=10mA, Output Noise Voltage VNO 30 µVrms − − Vo=3V Version Control Voltage for ON-state 1.6 V VCONT(ON) − − Control Voltage for OFF-state 0.6 V VCONT(OFF) − − -2- Ver.2007-01-06 NJM2871/A, NJM2872/A (Vo≤2.0V version : VIN=Vo+1V, CIN=0.1µF, Co=4.7µF, 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 Vo=1.8V Version Average Temperature Ta=0∼85°C, Io=10mA, ∆Vo/∆Ta Coefficient of Output Voltage 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 − ±50 − ppm/°C − 22 − µVrms 1.6 − − − − 0.6 V V 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. 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 2.3V NJM287××31 NJM287××23 2.5V NJM287××32 NJM287××25 2.6V NJM287××26 NJM287××33 2.7V NJM287××27 NJM287××34 2.8V NJM287××28 NJM287××35 VOUT 2.85V 2.9V 3.0V 3.1V 3.2V 3.3V 3.4V 3.5V Device Name NJM287××355 NJM287××38 NJM287××04 NJM287××45 NJM287××46 NJM287××47 NJM287××05 VOUT 3.55V 3.8V 4.0V 4.5V 4.6V 4.7V 5.0V ■ TEST CIRCUIT A IIN VIN VOUT IOUT VIN V VOUT *4 1.0µF (ceramic) 0.1µF A ICONT CONTROL NOISE BYPASS Cp=0.01µF V VCONT GND *4 2.0V < Vo ≤ 2.6V version : Co=2.2µF(ceramic) Vo ≤ 2.0V version : Co=4.7µF(ceramic) Ver.2007-01-06 -3- NJM2871/A, NJM2872/A ■ TYPICAL APPLICATION 1 In case that ON/OFF Control is not required: VIN VIN VOUT VOUT 0.1µF 1.0µF *5 R (0∼300kΩ) NOISE BYPASS CONTROL Cp=0.01µF GND *5 2.0V < Vo ≤ 2.6V version : Co=2.2µF Vo ≤ 2.0V version : Co=4.7µF Connect control terminal to VIN terminal 2 In use of ON/OFF CONTROL: VIN VIN VOUT VOUT 1.0µF 0.1µF *5 R CONTROL GND NOISE BYPASS Cp=0.01µF *5 2.0V < Vo ≤ 2.6V version : Co=2.2µF Vo ≤ 2.0V version : Co=4.7µF 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 0.01µF greater to avoid the problem. In the case of using a resistance "R" between VIN and control. The current flow into the control terminal while the IC is ON state (ICONT) can be reduced when a pull up resistance "R" is inserted between VIN and the control terminal. The minimum control voltage for ON state (VCONT (ON)) is increased due to the voltage drop caused by ICONT and the resistance "R". The ICONT is temperature dependence as shown in the "Control Current vs. Temperature" characteristics. Therefore, the resistance "R" should be carefully selected to ensure the control voltage exceeds the VCONT (ON) over the required temperature range. -4- Ver.2007-01-06 NJM2871/A, NJM2872/A ■ ELECTRICAL CHARACTERISTICS Ver.2007-01-06 -5- NJM2871/A, NJM2872/A ■ ELECTRICAL CHARACTERISTICS -6- Ver.2007-01-06 NJM2871/A, NJM2872/A ■ ELECTRICAL CHARACTERISTICS NJM2871_3.0V Control Current v.s. Temperature 10 @:V IN=4V Output is open. Co=1µF(Ceramic) Cp=0.01µF V CONT=1.6V Control Current : ICONT ( µ A) 8 6 4 2 0 -50 0 50 100 o Temperature Ta ( C) Ver.2007-01-06 -7- 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. -8- Ver.2007-01-06