NCP5211A
NCP5211A is Low Voltage Synchronous Buck Controller manufactured by onsemi.
Features http://onsemi. MARKING DIAGRAM
14 SOIC- 14 D SUFFIX CASE 751A 1 B WL Y WW = Assembly Location = Wafer Lot = Year = Work Week NCP5211A BWLYWW
- Switching Regulator Controller
- N- Channel Synchronous Buck Design
- 1.0 Amp Gate Drive Capability
- 200 ns Transient Response
- Programmable Operating Frequency of 150 k Hz- 750 k Hz
- 0.8 V 1% Internal Reference
- Lossless Inductor Sensing Overcurrent Protection
- Cycle- by- Cycle Short Circuit Protection
- Programmable Soft Start
- 40 ns GATE Rise and Fall Times (3.3 n F Load)
- 70 ns Adaptive FET Nonoverlap Time
- Differential Remote Sense Capability
- System Power Management
- Operation with a Conversion Rail of 5.0 V or 12 V
- Undervoltage Lockout
- On/Off Control Through Use of the P Pin
- Max Duty Cycle Clamped to 70% for Forward Converter Control
Applications
PIN CONNECTIONS
GATE(H) BST LGND VFFB VFB P SGND
PGND GATE(L) VC IS+ IS- VCC ROSC
ORDERING INFORMATION
Device NCP5211AD NCP5211ADR2 Package SO- 14 SO- 14 Shipping† 55 Units/Rail 2500 Tape & Reel
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Set Top Devices Forward Converters Buck Converters Point of Load Regulation
†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.
© Semiconductor ponents Industries, LLC, 2003
December, 2003
- Rev. 3
Publication Order Number: NCP5211A/D
5.0 V
+
100 µF/10 V × 3
NTMS7N03 0.1 µF VC VCC P 0.1 µF 51 k 0.1 µF ROSC NCP5211A IS+ IS- SGND LGND 10 VFFB VFB 2.15 k 1.0 k 1.0% 680 p F SENSE- NOTE: Resistance in Ohms 1.0% SENSE+ BST GATE(H) GATE(L) PGND NTMS7N03 0.1 µF 4.7...
