NJM2340

NJM2340 www.DataSheet4U.com HIGH PRECISION DC/DC CONVERTER CONTROL IC ■GENERAL DESCRIPTION NJM2340 is a high precision DC/DC converter control IC with current sense amplifier. It uses a low side current sensing which reduces external components and improves accuracy. It is applicable for a wide range of application since it features high operating voltage and small outline packages. ■PACKAGE OUTLINE NJM2340M NJM2340RB1 ■FEATURES ●PWM switching control ●Operating Voltage (3.6 to 32V) ●Wide Oscillator Range (20kHz to 500 kHz) ●Duty Cycle (0% to 100%) ●Current Sensing Amplifier ●High Precision Reference Voltage Voltage Detect: 1V±1.5% Current Detect: 150mV±4% ●Bipolar Technology ●Package Outline DMP8, TVSP8 ■PIN CONFIGURATION 1 2 3 4 8 7 6 5 NJM2340M NJM2340RB1 Pin Function 1.IN1 2.IN2 3.F.B 4.GND 5.OUT 6.CT 7.VREF 8.V+ Ver 2.0 - 1 - NJM2340 www.DataSheet4U.com ■BLOCK DIAGRAM V+ 8 VREF 7 CT 6 OUT 5 VREF OSC ERROR AMP 1V PWM CURRENT SENSE AMP 0.15V 1 IN1 2 IN2 3 F.B 4 GND ■ABSOLUTE MAXIMUM RATINGS (Ta=25°C ) PARAMETER SYMBOL RATINGS + Maximum Supply Voltage V 36 Output Sink Current ISINK 15 (DMP8) 300 Power Dissipation PD (TVSP8) 320 Operating Temperature Range Topr -40 ∼ +85 Storage Temperature Range Tstg -50 ∼ +150 UNIT V mA mW °C °C ■RECOMMENDED OPERATING CONDITIONS (Ta=25°C) PARAMETER Supply Voltage Oscillation Frequency Oscillator Timing Resistance SYMBOL V+ fosc RT MIN. 3.6 20 20 MAX. 32 500 100 UNIT V kHz kΩ -2- NJM2340 www.DataSheet4U.com ■ELE...