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 PACKAGE OUTLINE NJU7665XF : : : : 1.5 to 5.5V fsw = 7.5k, 75k, 150kHz 75 MAX. (C version, C = 1F, VIN = 3V .) 100A MAX. (A version) : MTP-5 LINE-UP TABLE TYPE NO. Switching Frequency Supply Current Output Resistance NJU7665A 7.5kHz (typ.) 100A (max.) 1k (max.) NJU7665B 75kHz (typ.) 0.65mA (max.) 100 (max.) NJU7665C 150kHz (typ.) 1.4mA (max.) 75 (max.) BLOCK DIAGRAM PIN CONFIGURATION TERMINAL DESCRIPTION Terminal No. Symbol 1 VOUT 2 VIN 3 - C 4 GND 5 C Ver.2005-02-28 + Function Output Voltage Power Supply Terminal Charge Pump Capacitor (-) Connecting Terminal Ground Terminal Charge Pump Capacitor (+) Connecting Terminal -1- NJU7665 Series ABSOLUTE MAXIMUM RATINGS PARAMETER (Ta = 25C) SYMBOL RATINGS UNIT VIN -0.3 to 6.0 V mW Input Supply Voltage Power Dissipation PD 200 Operating Temperature Topr -40 to + 85 C Storage Temperature Tstg -55 to +125 C Note1) Decoupling capacitor should be connected between VIN and GND due to the stabilized operation for the IC. ELECTRICAL CHARACTERISTICS A version PARAMETER (VIN = 3.0V, C1 = C2 = 1F, Ta = 25C) SYMBOL CONDITION MIN. TYP. MAX. UNIT Supply Current IIN RL = - - 100 A Input Supply Voltage VIN -40 C Ta 85C 1.5 - 5.5 V - - 1.0 k Output Resistance ROUT IOUT = 500A Oscillation Frequency FO 4.5 7.5 10.5 kHz Power Conversion Rate PEF RL = 500k - 90 - % Voltage Conversion Rate VEF RL = 90 99.3 - % B version PARAMETER (VIN = 3.0V, C1 = C2 = 1F, Ta = 25C) SYMBOL CONDITION MIN. TYP. MAX. UNIT Supply Current IIN RL = - - 0.65 mA Input Supply Voltage VIN -40 C Ta 85C 1.5 - 5.5 V - - 100 Output Resistance ROUT IOUT = 5mA Oscillation Frequency FO 40 75 100 kHz Power Conversion Rate PEF RL = 500k - 90 - % Voltage Conversion Rate VEF RL = 90 99.3 - % C version PARAMETER (VIN = 3.0V, C1 = C2 = 1F, Ta = 25C) MIN. TYP. MAX. UNIT Supply Current IIN RL = - - 1.4 mA Input Supply Voltage VIN -40 C Ta 85C 1.5 - 5.5 V Output Resistance Oscillation Frequency SYMBOL ROUT CONDITION IOUT = 10mA FO - - 75 80 150 200 kHz Power Conversion Rate PEF RL = 500k - 90 - % Voltage Conversion Rate VEF RL = 90 99.3 - % NOTE2) Please minimize the wiring impedance of C+, C- terminals due to the power conversion rate. -2- Ver.2005-02-28 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.2005-02-28 -3-