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© Semiconductor Components Industries, LLC, 2007 November, 2007 - Rev. 2 1 Publication Order Number: NCP3102/D NCP3102 Wide Input Voltage Synchronous Buck Converter The NCP3102 is a high efficiency, 10 A DC-DC buck converter designed to operate from a 5 V to 13.2 V supply. The device is capable of producing an output voltage as low as 0.8 V. The NCP3102 can continuously output 10 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 NCP3102 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 NCP3102 is available in a 40-pin QFN package. Features • Input Voltage Range from 4.5 V to 13.2 V • 275 kHz Internal Oscillator • Greater than 90% Maximum Efficiency • Boost Pin Operates to 25 V • Voltage Mode PWM Control • 0.8 V $1% Internal Reference Voltage • Adjustable Output Voltage by Resistor Divider • Capacitor Programmable Soft-Start • 80% Maximum Duty Cycle • Input Undervoltage Lockout • Resistor Programmable Current Limit • This is a Pb-Free Device Applications • Servers/Networking • DSP and FPGA Power Supply • DC-DC Regulator Modules Figure 1. Typical Application Diagram NCP3102 Vout Vin TGOUT TGIN PWRPHS CPHS PWRVCC BST VCC COMP/DIS FB AGND BG PWRGND GND GND 100 95 90 85 80 75 70 65 60 55 50 0 123 4 5 6 7 8 9 10 OUTPUT CURRENT (A) Figure 2. Efficiency VIN = 5.0 V VIN = 12 V QFN40 CASE 485AK MARKING DIAGRAM A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week G = Pb-Free Package http://onsemi.com NCP3102 AWLYYWWG See detailed ordering and shipping information in the package dimensions section on page 16 of this data sheet. ORDERING INFORMATION PIN CONNECTIONS (Top View) 40 1 |
