Product Summary

The MAX731EWE is fixed and adjustable CMOS, step-up, DC-DC switch-mode regulator. It accepts a positive input voltage between +2.5V and +5.25V and converts it to a fixed +5V at 200mA, guaranteed over temperature. Typical full-load efficiencies are 82%. It requires a single inductor value of 22μH to function over the entire range, so on inductor related design is necessary. The applications of the MAX731EWE include: (1)+5V logic supply in +3V logic system; (2)DC-DC converter module replacement; (3)Protable instruments; (4)Laptop computers; (5)Distributed power systems; (6)Cellular phones; (7)Battery-powered equipment.

Parametrics

MAX731EWE absolute maxing ratings: (1)V+ LX to GND: -0.3V to +17V; (2)Vout to GND: ±25V; (3)SS, CC, SHDN to GND: -0.3V to (V+ +0.3V); (4)Peak switch current(ILX): 1.5A; (5)Reference current(IVREF): 2.5mA; (6)Continuous power dissipation(TA=+70℃): 8-pin plastic DIP: 727mW; 16-pin wide SO: 762mW; 8-pin CERDIP: 640mW; (7)Operating temperature ranges: -40℃ to +85℃; (8)Junction temperature: +150℃; (9)Storage temperature range: -65℃ to +160℃; (10)Lead temperature(soldering, 10sec): +300℃.

Features

MAX731EWE features: (1)200mA load currents guaranteed with no external MOSFET; (2)Step-up from a 2.5V input; (3)170KHz high-frequency current-mode PWM; (4)82% to 95% typical efficiencles at full load ; (5)Small inductor-no component design required; (6)Overcurrent and soft-start protection; (7)8-pin DIP, 16-pin wide so package; (8)Shutdown pin.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
MAX731EWE
MAX731EWE
Maxim Integrated Products
DC/DC Switching Converters
Data Sheet
Negotiable 
MAX731EWE+
MAX731EWE+
Maxim Integrated Products
DC/DC Switching Converters
Data Sheet
Negotiable 
MAX731EWE+T
MAX731EWE+T
Maxim Integrated Products
DC/DC Switching Converters
Data Sheet
Negotiable 
MAX731EWE-T
MAX731EWE-T
Maxim Integrated Products
DC/DC Switching Converters
Data Sheet
Negotiable