NJW4153U2-A-TE2 Nisshinbo

NJW4153 Switching Regulator IC for Buck Converter Current Mode Control w/ 40V/1A MOSFET GENERAL DESCRIPTION PACKAGE OUTLINE The NJW4153 is a buck converter with 40V/1A MOSFET. It corresponds to high oscillating frequency, and Low ESR Output Capacitor (MLCC) within wide input range from 4.6V to 40V. Therefore, the NJW4153 can realize downsizing of applications with a few external parts so that adopts current mode control. NJW4153U2 Also, it has a soft start function, an over current protection and a thermal shutdown circuit. It is suitable for power supply circuit of Micro Processor, DSP and so on that need fast transient response. NJW4153KV1 FEATURES Current mode Control Maximum Rating Input Voltage 45V Wide Operating Voltage Range 4.6V to 40V Switching Current 1.4A min. PWM Control Built-in Compensation Circuit Correspond to Ceramic Capacitor (MLCC) Oscillating Frequency 1MHz typ. (A ver.) Soft Start Function 4ms typ. UVLO (Under Voltage Lockout) Over Current Protection (Hiccup type) Thermal Shutdown Protection Standby Function Package Outline NJW4153U2 : SOT-89-5 NJW4153KV1 : ESON8-V1 PRODUCT CLASSIFICATION Operating Oscillation Part Number Version Package Temperature Frequency Range General Spec. NJW4153U2-A A 1MHz typ. SOT-89-5 -40C to +85C General Spec. NJW4153KV1-A A 1MHz typ. ESON8-V1 -40C to +85C Ver.2013-03-21 - 1 - NJW4153 PIN CONFIGURATION PIN FUNCTION PIN FUNCTION 5 (2) 4 1. ON/OFF 1. SW 1 8 8 1 2. GND 2. N.C. 2 7 7 2 + 3. IN- 3. V 3 6 6 3 4. SW 4. N.C. 4 5 5 4 + 5. V 5. ON/OFF Exposed PAD on backside 6. GND connect to GND. 7. N.C. 1 2 3 8. IN- (Top View) (Bottom View) NJW4153KV1 NJW4153U2 BLOCK DIAGRAM + V SLOPE CURRENT COMP. SENSE UVLO OCP ON/OFF High: ON Standby Low : OFF ON/OFF (Standby) 450k Low Frequency S Q OSC Buffer Control R SW TSD IN- PWM ER AMP Soft Start Vref 0.8V GND Ver.2013-03-21 - 2 -