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NCP1597B: Synchronous Buck Converter, 1 MHz, 2.0 A

Datasheet: Buck Regulator Synchronous 1 MHz, 2 A
Rev. 2 (560kB)
Product Overview
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The NCP1597B is a fixed 1 MHz, high-output-current, synchronous PWM converter that integrates a low-resistance, high-side P-channel MOSFET and a low-side N-channel MOSFET. The NCP1597B utilizes current mode control to provide fast transient response and excellent loop stability. It regulates input voltages from 4.0 V to 5.5 V down to an output voltage as low as 0.8 V and is able to supply up to 2 A. The NCP1597B has features including fixed internal switching frequency (FSW), and an internal soft-start to limit inrush current. Using the EN pin, shutdown supply current is reduced to 3 µA maximum. Other features include cycle-by-cycle current limiting; short-circuit protection, low dropout mode, power saving mode and thermal shutdown. The part is also offered in a 6-pin 3x3mm DFN package under the NCP1597A.
Features   Benefits
     
  • Input Voltage Range: from 4.0 V to 5.5 V
 
  • Optimized for +5V input
  • Internal 140 mΩ HighSide Switching P-FET and 90 mΩ Low-Side N-FET
 
  • High efficiency operation
  • Fixed 1 MHz Switching Frequency
 
  • Small output inductor and output capacitance
  • Cycle-by-Cycle Current Limiting
 
  • Protection feature
  • Overtemperature Protection
 
  • Protection feature
  • Start-up with Pre-Biased Output Load
 
  • Compatible with uP Core and I/O requirements
  • 0.8 V +/- 1.5% Reference Voltage
 
  • Ability to output low output voltage
  • Power Saving Mode During Light Load
 
  • Increased efficiency at light load
Applications   End Products
  • +5V DC-DC Regulator
 
  • Set-Top-Box
  • LCD-TV / DTV / Plasma TV
  • USB Powered Devices
Technical Documentation & Design Resources
Data Sheets (1) Package Drawings (1)
Availability & Samples
Specifications
Application Diagram
Intaractive Block Diagram
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
NCP1597BMNTWG Active
Pb-free
Halide free
NCP1597B DFN-10 485C 1 260 Tape and Reel 3000 $0.3533
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 24,000

Product
Description
Pricing ($/Unit)
Compliance
Status
Topology
Control Mode
VCC Min (V)
VCC Max (V)
VO Typ (V)
IO Typ (A)
Efficiency (%)
fSW Typ (kHz)
Package Type
NCP1597BMNTWG  
 $0.3533 
Pb
H
 Active   
Step-Down
Current Mode
4
5.5
0.8 to 4.95
2
90
1000
DFN-10
Case Outlines
485C   
NCP1597B: Synchronous Buck Converter, 1 MHz, 2.0 A
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