NCP1597B Series

Synchronous Buck Converter, 1 MHz, 2.0 A

Catalog

Synchronous Buck Converter, 1 MHz, 2.0 A

Part	Function	Package / Case	Output Type	Voltage - Input (Min) [Min]	Voltage - Output (Min/Fixed)	Number of Outputs	Frequency - Switching	Output Configuration	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Output (Max) [Max]	Mounting Type	Current - Output	Topology	Voltage - Input (Max) [Max]	Supplier Device Package	Supplied Contents	Utilized IC / Part	Main Purpose	Voltage - Input [Max]	Voltage - Input [Min]	Board Type	Regulator Topology	Outputs and Type	Outputs and Type
ON Semiconductor NCP1597BMNTWG	Step-Down	10-VFDFN Exposed Pad	Adjustable	4 V	0.8 V	1	1 MHz	Positive	85 °C	-40 °C	4.68 V	Surface Mount Wettable Flank	2 A	Buck	5.5 V	10-DFN (3x3)
ON Semiconductor NCP1597AMNTWG	Step-Down	6-VDFN Exposed Pad	Adjustable	4 V	0.8 V	1	1 MHz	Positive	85 °C	-40 °C	4.68 V	Surface Mount	2 A	Buck	5.5 V	6-DFN (3x3)
ON Semiconductor NCP1597BGEVB							1 MHz						2 A				Board(s)	NCP1597B	DC/DC Step Down	5.5 V	4 V	Fully Populated	Buck	Non-Isolated	1

Catalog

Synchronous Buck Converter, 1 MHz, 2.0 A

Key Features

• Input Voltage Range: from 4.0 V to 5.5 V

• Internal 140 mΩ HighSide Switching P-FET and 90 mΩ Low-Side N-FET

• Fixed 1 MHz Switching Frequency

• Cycle-by-Cycle Current Limiting

• Overtemperature Protection

• Start-up with Pre-Biased Output Load

• 0.8 V +/- 1.5% Reference Voltage

• Power Saving Mode During Light Load

Description

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.