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NCP3101

ON Semiconductor
Part Number NCP3101
Manufacturer ON Semiconductor
Description Wide Input Voltage Synchronous Buck Converter
Published May 4, 2009
Detailed Description NCP3101 Wide Input Voltage Synchronous Buck Converter The NCP3101 is a high efficiency, wide input, high output current...
Datasheet PDF File NCP3101 PDF File

NCP3101
NCP3101

Overview
NCP3101 Wide Input Voltage Synchronous Buck Converter The NCP3101 is a high efficiency, wide input, high output current, synchronous PWM buck converter designed to operate from a 4.
5 V to 13.
2 V supply.
The device is capable of producing an output voltage as low as 0.
8 V.
The NCP3101 can continuously output 6 A through MOSFET switches driven by an internally set 275 kHz oscillator.
The 40-pin device provides an optimal level of integration to reduce size and cost of the power supply.
The NCP3101 also incorporates an externally compensated transconductance error amplifier and a capacitor programmable soft-start function.
Protection features include programmable short circuit protection and under voltage lockout (UVLO).
The NCP3101 is available in a 40-pin QFN package.
Features •ăInput Voltage Range from 4.
5 V to 13.
2 V •ă275 kHz Internal Oscillator •ăGreater than 90% Maximum Efficiency •ăBoost Pin Operates to 25 V •ăVoltage Mode PWM Control •ă0.
8 V $1% Internal Reference Voltage •ăAdjustable Output Voltage by Resistor Divider •ăCapacitor Programmable Soft-Start •ă80% Maximum Duty Cycle •ăInput Undervoltage Lockout •ăResistor Programmable Current Limit •ăThis is a Pb-Free Device Applications •ăServers/Networking •ăDSP and FPGA Power Supply •ăDC-DC Regulator Modules http://onsemi.
com MARKING DIAGRAM 1 40 QFN40, 6x6 CASE 485AK NCP3101 AWLYYWWG A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week G = Pb-Free Package PIN CONNECTIONS Vin PWRVCC CPHS BST VCC PWRPHS NCP3101 COMP/DIS TGOUT FB TGIN AGND BG PWRGND Vout ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 16 of this data sheet.
GND Figure 1.
Typical Application Diagram GND ©Ă Semiconductor Components Industries, LLC, 2008 January, 2008 - Rev.
0 1 Publication Order Number: NCP3101/D NCP3101 FB 16 COMP DIS Vref 17 VCC 13 POR UVLO + 0.
8V + CLOCK R Q PWM OUT S FAULT BST TGOUT TGIN 24 21 25 + - 2V - FAULT + 0.
4V 50mV-550mV...


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