Specification	MAX1951AESA+T

Current - Output	2 A
Frequency - Switching	1 MHz
Function	Step-Down
Mounting Type	Surface Mount
Number of Outputs	1
Operating Temperature [Max]	85 C
Operating Temperature [Min]	-40 ¯C
Output Configuration	Positive
Output Type	Adjustable
Package / Case	0.154 in
Package / Case	8-SOIC
Package / Case	3.9 mm
Supplier Device Package	8-SOIC
Synchronous Rectifier	True
Topology	Buck
Voltage - Input (Max) [Max]	5.5 V
Voltage - Input (Min) [Min]	2.6 V
Voltage - Output (Max) [Max]	5.5 V
Voltage - Output (Min/Fixed)	0.8 V

MAX1951A Series

1MHz, 2A, 2.6V to 5.5V Input, PWM DC-DC Step-Down Regulator with Enable

Part	Supplier Device Package	Topology	Current - Output	Output Type	Package / Case	Package / Case	Package / Case	Voltage - Input (Min) [Min]	Synchronous Rectifier	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Frequency - Switching	Function	Output Configuration	Voltage - Input (Max) [Max]	Voltage - Output (Min/Fixed)	Voltage - Output (Max) [Max]	Number of Outputs
Analog Devices Inc./Maxim Integrated MAX1951AESA+T	8-SOIC	Buck	2 A	Adjustable	0.154 in	8-SOIC	3.9 mm	2.6 V		85 C	-40 ¯C	Surface Mount	1 MHz	Step-Down	Positive	5.5 V	0.8 V	5.5 V	1

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Distributor	Package	Quantity	$

Digikey	N/A	0	$ 5.45
Mouser	N/A	2500	$ 5.08

Description

General part information

MAX1951A Series

The MAX1951A high-efficiency, DC-DC step-down switching regulator delivers up to 2A of output current. The device operates from an input voltage range of 2.6V to 5.5V and provides an adjustable output voltage from 0.8V to VIN, making the MAX1951A ideal for on-board postregulation applications. The MAX1951A total output error is less than ±1.5% over load, line, and temperature.The MAX1951A operates at a fixed frequency of 1MHz with an efficiency of up to 94%. The high operating frequency minimizes the size of external components. Internal soft-start control circuitry reduces inrush current. Short-circuit and thermal-overload protection improve design reliability.The MAX1951A can start up safely with a prebiased or without a preexisting output. This feature simplifies tracking supply designs for core and I/O applications and redundant supply designs.The MAX1951A is available in an 8-pin SO package and operates over the -40°C to +85°C extended temperature range.ApplicationsASIC/DSP/µP/FPGA Core and I/O VoltagesNetworking and TelecommunicationsServersSet-Top BoxesTVs

Documents

Technical documentation and resources

MAX1951AESA+T | Datasheet

Datasheet

Package Drawing - 8-SOIC_N-150_MIL

Package Drawing