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| NJU7665 Series SMALL PACKAGE VOLTAGE INVERTER GENERAL DESCRIPTION The NJU7665 series is a voltage inverter incorporated RC oscillator, pre-buffer and power-MOS, which generates a polarity-converted negative voltage from +1.5V to +5.5V. The switching frequency is fixed by internal RC oscillator and the following line-up of 3 version are available to select. The NJU7665 series is in MTP-5 package and it is suitable for battery use items and other portable items. FEATURES * Input Voltage * Switching Frequency * Low Output Resistance * Low Operating Current * C-MOS Technology * Package Outline LINE-UP TABLE TYPE NO. NJU7665A NJU7665B NJU7665C Switching Frequency 7.5kHz (typ.) 75kHz (typ.) 150kHz (typ.) Supply Current 75A (typ.) 0.75mA (typ.) 1.5mA (typ.) Output Resistance 0.75k (typ.) 75k (typ.) 75k (typ.)* PRELIMINARY PACKAGE OUTLINE NJU7665XF : : : : : 1.5 to 5.5V fsw = 7.5k, 75k, 150kHz 100 MAX. (C version, C = 1F, VDD = 3V / T.B.D.) 100A MAX. (A version) MTP-5 * : T. B. D. BLOCK DIAGRAM PIN CONFIGURATION TERMINAL DESCRIPTION Terminal No. 1 2 3 4 5 Symbol VOUT VIN C - Function Output Voltage Power Supply Terminal Charge Pump Capacitor (-) Connecting Terminal Ground Terminal Charge Pump Capacitor (+) Connecting Terminal GND C + Ver.2003-11-07 -1- NJU7665 Series ABSOLUTE MAXIMUM RATINGS PARAMETER Input Supply Voltage Power Dissipation Operating Temperature Storage Temperature SYMBOL VIN PD Topr Tstg RATINGS -0.3 to 6.0 200 -40 to + 85 -55 to +125 (Ta = 25C) UNIT V mW C C Note1) Decoupling capacitor should be connected between VIN and GND due to the stabilized operation for the IC. ELECTRICAL CHARACTERISTICS A version PARAMETER Supply Current Input Supply Voltage Output Resistance Oscillation Frequency Power Conversion Rate Voltage Conversion Rate SYMBOL IIN VIN ROUT FO PEF VEF RL = 500k RL = RL = -40 C Ta 85C IOUT = 500A CONDITION (VIN = 3.0V, C1 = C2 = 1F, Ta = 25C) MIN. 1.5 5.2 90 TYP. 75 0.75 7.5 90 99.3 MAX. 100 5.5 1.0 9.8 UNIT A V k kHz % % B version PARAMETER Supply Current Input Supply Voltage Output Resistance Oscillation Frequency Power Conversion Rate Voltage Conversion Rate SYMBOL IIN VIN ROUT FO PEF VEF RL = 500k RL = RL = -40 C Ta 85C IOUT = 5mA CONDITION (VIN = 3.0V, C1 = C2 = 1F, Ta = 25C) MIN. 1.5 52 90 TYP. 0.75 75 75 90 99.3 MAX. 1.0 5.5 100 98 UNIT mA V kHz % % C version PARAMETER Supply Current Input Supply Voltage Output Resistance Oscillation Frequency Power Conversion Rate Voltage Conversion Rate SYMBOL IIN VIN ROUT FO PEF VEF RL = 500k RL = RL = -40 C Ta 85C IOUT = 10mA CONDITION (VIN = 3.0V, C1 = C2 = 1F, Ta = 25C) MIN. 1.5 105 90 TYP. 1.5 75* 150 90 99.3 MAX. 2.0 5.5 100* 195 UNIT mA V kHz % % NOTE2) Please minimize the wiring impedance of C+, C- terminals due to the power conversion rate. *) T. B. D. -2- Ver.2003-11-07 NJU7665 Series APPLICATION CIRCUIT 1. Negative Voltage Output Circuit 2. Parallel Connection Circuit The following circuit reduce the output impedance. [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. Ver.2003-11-07 -3- |
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