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| NJM2346 VOLTAGE AND CURRENT CONTROL IC GENERAL DESCRIPTION The NJM2346 is a low power operation battery charger IC. It includes a voltage reference and two operational amplifiers for voltage and current control needed for a design of secondary circuit for battery chargers and switching regulators. Low current consumption design contributes low standby power required for 1A class battery chargers. PACKAGE OUTLINE NJM2346M NJM2346RB1 FEATURES Low Quiescent Current Precision AMP. Operating Voltage Precision Voltage Reference PC pin Sink Current Bipolar Technology Package Outline PIN CONFIGURATION 250uA typ. Vio=0.5mV typ. 2.2V to 13V 1.24V1% 20mA max. DMP8, TVSP8 1 A 8 VREF 2 3 4 B 7 6 5 PIN FUNCTION 1. PC 2. A -INPUT 3. A +INPUT 4. GND 5. B +INPUT 6. B -INPUT 7. VREF 8. V+ ABSOLUTE MAXIMUM RATINGS (Ta=25C) PARAMETER SYMBOL Supply Voltage V+ Differential Input Voltage Common Mode Input Voltage PC Terminal Current Power Dissipation Operating Temperature Range Storage Temperature Range VID VIC IPC PD TOPR TSTG MAXIMUM RATINGS 14 (Ach) 14 (Bch) 14 (Ach) -0.3 14 (note) (Bch) -0.3 14 (note) 20 (DMP 8) 300 (TVSP 8) 320 -40 +85 -50 +150 UNIT V V V mA mW C C (note) When the supply voltage is less than 14V, the absolute maximum input voltage is equal to the supply voltage. Ver.2003-05-21 -1- NJM2346 RECOMMENDED OPERATING CONDITIONS (Ta=25C) PARAMETER SYMBOL MAXIMUM RATINGS Operating Voltage Vopr 2.2 13 ELECTRICAL CHARACTERISTICS (V+=5V,Ta=25C) GENERAL CHARACTERISTICS PARAMETER SYMBOL TEST CONDITION Operating Current Leakage Current Saturation Voltage Reference Voltage Reference Voltage Load Regulation [Ach] PARAMETER Input Offset Voltage Input Offset Current Input Bias Current Large Signal Voltage Gain Input Common Mode Voltage Range Common Mode Rejection Ratio Supply Voltage Rejection Ratio Slew Rate Gain Bandwidth Product [Bch] PARAMETER Input Offset Voltage Input Offset Current Input Bias Current Large Signal Voltage Gain Input Common Mode Voltage Range Common Mode Rejection Ratio Supply Voltage Rejection Ratio Slew Rate Gain Bandwidth Product SYMBOL VIO IIO IB AV VICM CMR SVR SR GB TEST CONDITION MIN. - - - - 0.5 4.0 - - - - TYP. 0.5 10 20 80 - 80 80 0.5 1 MAX. 2 50 80 - - - - - - UNIT mV nA nA dB V dB dB V/uA MHz SYMBOL VIO IIO IB AV VICM CMR SVR SR GB TEST CONDITION MIN. - - - - -0.2 3.0 - - - - TYP. 0.5 10 40 80 - 80 80 0.5 1 MAX. 2 50 160 - - - - - - UNIT mV nA nA dB V dB dB V/uA MHz ICC IPCLEAK VPC(SAT) VREF VREF/ IREF IPC=off V+=VPC=13V IPC=20mA IREF=0mA IREF=0mA 1mA UNIT V MIN. - - - 1227 - TYP. 250 - 0.1 1240 - MAX. 350 1 0.3 1253 10 UNIT uA uA V mV mV f=10kHz f=10kHz -2- Ver.2003-05-21 NJM2346 TYPICAL APPLICATIONS PC R5 VI CONTROL IC PC R1 R3 2 3 R2 RSC R4 4 8 A 1 NJM2346 B VREF=1.24V1% Battery 5 6 7 R6 Ver.2003-05-21 -3- NJM2346 TYPICAL CHARACTERISTICS Ach Voltage Gain * Phase vs. Frequency 50 Voltage Gain A V (dB) 40 30 20 10 Gain 0 100 1k 10k 100k 1M Frequency f (Hz) 0 10M Phase (V =5V,Ta=25C) + 225 Bch Voltage Gain * Phase vs. Frequency (V+=5V,Ta=25C) 225 50 Voltage Gain AV (dB) 40 30 20 10 Gain Phase 180 Phase (deg) 135 90 45 180 135 90 45 0 10M Phase (deg) 3 0 100 1k 10k 100k 1M Frequency f (Hz) 350 Operating Current ICC (uA) 300 250 200 150 100 50 0 Operating Current vs. Operating Voltage (IPC=off,Ta=25C) 1.4 Reference Voltage VREF (V) 1.2 1 0.8 0.6 0.4 0.2 0 Reference Voltage vs. Operating Voltage (IREF=0mA,Ta=25C) 0 2 4 6 8 10 + 12 14 0 2 4 6 8 10 + 12 14 Operating Voltage V (V) Saturation Voltage vs. PC Terminal Current (V+=5V,Ta=25C) Reference Voltage VREF (V) Operating Voltage V (V) Reference Voltage vs. 7pin Output Current (V+=5V,Ta=25C) Saturation Voltage VPC(SAT) (V) 0.3 1.4 1.2 1 0.8 0.6 0.4 0.2 0 0.2 0.1 0 0 5 10 15 PC Terminal Current IPC (mA) 20 0 1 2 7pin Output Current IREF (mA) Ver.2003-05-21 -4- NJM2346 TYPICAL CHARACTERISTICS Operating Current vs. Temperature (V+=5V,IPC=off) Saturation Voltage VPC(SAT) (V) Saturation Voltage vs. Temperature (V+=5V,IPC=20mA) 350 Operating Current ICC (uA) 300 250 200 150 100 50 0 0.3 0.2 0.1 0 -50 -25 0 25 50 75 100 125 150 Temperature Ta (C) Input Offset Voltage vs. Temperature (V+=5V) -50 -25 0 25 50 75 100 125 150 Temperature Ta (C) Reference Voltage vs. Temperature (V+=5V,IREF=0mA) Input Offset Voltage Vio (mV) 1.26 Reference Voltage VREF (V) 1.25 1.24 1.23 1.22 2 1.5 1 0.5 0 -0.5 -1 -1.5 -2 Ach Bch -50 -25 0 25 50 75 100 125 150 -50 -25 0 25 50 75 100 125 150 Temperature Ta (C) Input Bias Voltage vs. Temperature (V+=5V) Temperature Ta (C) 150 Input Bias Voltage IB (nA) 100 50 0 -50 -100 -150 Ach Bch [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. -50 -25 0 25 50 75 100 125 150 Temperature Ta (C) Ver.2003-05-21 -5- |
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