Product Summary

The MAX739EPD is a CMOS, inverting, switch-mode regulator with an internal power MOSFET. Guaranteed output power for the device is 1.25W when powered from a +4.5V input, and 1.5W when powered from +6V. The applications of the MAX739EPD include low-noise analog signal processing circuits, LCD bias supplies, power supplies for ECL, board-level DC-DC conversion, battery-powered equipment and computer peripherals.

Parametrics

MAX739EPD absolute maximum ratings: (1)supply votlage: 15.5V, -0.3V; (2)maximum input/output differential: 22V; (3)negative drive voltage: -17V, 0.3V; (4)switch voltage: -22.5V, 0.3V; (5)feedback voltage: ±50V; (6)auxilary input voltages: -0.3 to V++0.3V; (7)peak switch current: 2.5A; (8)reference current: 2.5mA; (9)contimuous power dissipation: 800mW; (10)operating temperature range: 0 to 70℃; (11)junction temperature: 150℃; (12)storage temperature range: -65 to 160℃; (13)lead temperature: 300℃.

Features

MAX739EPD features: (1)pre-set 5V, 12V, 15V or adjustable outputs; (2)convert positive voltages to negative; (3)1.25W guaranteed output power; (4)83% typical efficiency; (5)1.7mA qulescent current; (6)1μA shutdown mode; (7)4V to 15V input voltage range; (8)165KHz current-mode PWM, low noise and jitter; (9)undervoltage lockout and soft-start protection.

Diagrams

MAX739EPD block diagram

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