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NCP81234

ON Semiconductor
Part Number NCP81234
Manufacturer ON Semiconductor
Description Dual-Channel/Two-Phase Controller
Published Jan 24, 2016
Detailed Description Dual-Channel/Two-Phase Controller for DrMOS NCP81234 The NCP81234, a dual−channel/two−phase synchronous buck controller...
Datasheet PDF File NCP81234 PDF File

NCP81234
NCP81234


Overview
Dual-Channel/Two-Phase Controller for DrMOS NCP81234 The NCP81234, a dual−channel/two−phase synchronous buck controller, provides flexible power management solutions for applications supported by DrMOS.
Operating in high switching frequency up to 1.
2 MHz allows employing small size inductor and capacitors.
Features • Single Vin = 4.
5 ~ 20 V with Input Feedforward • Integrated 5.
35 V LDO • Vout = 0.
6 V ~ 5.
3 V • Fsw = 200 k ~ 1.
2 MHz • PWM Output Compatible to 3.
3 V and 5 V DrMOS • Dual−Channel or Two−Phase Operation • DDR Power Mode Option • Interleaved Operation • Differential Current Sense Compatible for both Inductor DCR Sense and DrMOS Iout • 2 Independent Enables with Programmable Input UVLO • Programmable DrMOS Power Ready Detection (DRVON) • 2 Power Good Indicators • Comprehensive Fault Indicator • Externally Programmable Soft Start and Delay Time • Programmable Hiccup Over Current Protection • Hiccup Under Voltage Protection • Recoverable Over Voltage Protection • Hiccup Over Temperature Protection • Thermal Shutdown Protection • QFN−28, 5x5 mm, 0.
5 mm Pitch Package • This is a Pb−Free Device Typical Applications • Telecom Applications • Server and Storage System • Multiple Rail Systems • DDR Applications www.
onsemi.
com 1 28 QFN28 MN SUFFIX CASE 485BQ MARKING DIAGRAM 1 XXXXXXXX XXXXXXXX AWLYYWWG G XXXXX = Specific Device Code A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week G = Pb−Free Package (Note: Microdot may be in either location) PINOUT 28 27 26 25 24 23 22 VCC5V VREF ILMT1 OTP1 COMP1 FB1 PWM1 1 VIN 2 EN1 3 EN2 4 DRVON 5 PGOOD1 6 PGOOD2 7 FAULT GND 29 ISP1 21 ISN1 20 ISP2 19 ISN2 18 PWM2 17 FB2 16 COMP2 15 DLY1 DLY2 /DDR SS FSET CNFG ILMT2 OTP2 /REFIN 8 9 10 11 12 13 14 (Top View) ORDERING INFORMATION Device Package Shipping† NCP81234MNTXG QFN28 (Pb−Free) 5000 / Tape & Reel †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Sp...


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