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NCP81234 Datasheet(PDF) 1 Page - ON Semiconductor |
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NCP81234 Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 19 page © Semiconductor Components Industries, LLC, 2015 November, 2015 − Rev. 0 1 Publication Order Number: NCP81234/D NCP81234 Dual-Channel/Two-Phase Controller for DrMOS 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 QFN28 MN SUFFIX CASE 485BQ Device Package Shipping† ORDERING INFORMATION NCP81234MNTXG QFN28 (Pb−Free) 5000 / Tape & Reel MARKING DIAGRAM www.onsemi.com †For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specification Brochure, BRD8011/D. XXXXXXXX XXXXXXXX AWLYYWW G G 1 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) 28 1 VIN 5 4 3 2 1 EN1 EN2 PGOOD1 7 6 PGOOD2 GND 29 ISP1 17 18 19 20 21 ISP2 ISN1 PWM2 ISN2 15 16 FB2 12 11 10 9 8 14 13 COMP2 24 23 22 28 27 26 25 DRVON FAULT PINOUT (Top View) |
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