NJW4131

NJW4131 Switching Regulator IC for Boost Converter w/ 40V/1.4A or 40V/1A MOSFET GENERAL DESCRIPTION The NJW4131 is a boost converter with 40V/1.4A or 40V/1A MOSFET. It corresponds to high oscillating frequency, and Low ESR Output Capacitor (MLCC) within wide input range from 4.0V to 35V. Therefore, the NJW4131 can realize downsizing of an application with a few external parts. Also, it has a soft start function, an over current protection and a thermal shutdown circuit. It is suitable for power supply to a Car Accessory, Office Automation equipment, Industrial Instrument, LED and so on. ■ PACKAGE OUTLINE NJW4131GM1-A (HSOP8) FEATURES Output Switch Voltage 40V max. Wide Operating Voltage Range 4V to 35V Switching Current 1.4A (min.) @ A version 1.0A (min.) @ B version PWM Control Wide Oscillation Frequency 300kHz to 1MHz Soft-Start Function 4ms typ. UVLO (Under Voltage Lockout) Over Current Protection / Thermal Shutdown Protection Standby Function Package Outline NJW4131GM1: HSOP8 NJW4131R: MSOP8(VSP8)* *MEET JEDEC MO-187-DA NJW4131R-B (MSOP8 (VSP8)) PRODUCT CLASSFICATION PART NUMBER VERSION NJW4131GM1-A NJW4131R-B A B SWITCHING CURRENT LIMIT (MIN.) 1.4A 1.0A PACKAGE HSOP8 MSOP8(VSP8) OPERATING TEMPERATURE RANGE -40°C to +85°C -40°C to +85°C Ver.2012-08-03 -1- NJW4131 ■ PIN CONFIGURATION 18 27 36 45 Exposed PAD on backside connect to GND NJW4131GM1-A 18 27 36 45 NJW4131R-B BLOCK DIAGRAM V+ PIN FUNCTION 1. SW 2. ON/OFF 3. V+ 4. RT 5. IN6....