Product Summary

The MAX1675EUA+T compact, high-efficiency, step-up DC-DC converter fits in small μMAX packages. It features a built-in synchronous rectifier, which improves efficiency and reduces size and cost by eliminating the need for an external Schottky diode. Quiescent supply current is only 16μA. The input voltage ranges from 0.7V to VOUT, where VOUT can be set from 2V to 5.5V. Start-up is guaranteed from 1.1V inputs. The MAX1675EUA+T has a preset, pin-selectable output for 5V or 3.3V. The outputs can also be adjusted to other voltages using two external resistors. The MAX1675EUA+T has a 0.3Ω N-channel MOSFET power switch. The MAX1675EUA+T has a 0.5A current limit, which permits the use of a smaller inductor.

Parametrics

MAX1675EUA+T absolute maximum ratings: (1)Supply Voltage (OUT to GND): -0.3V to +6.0V; (2)Switch Voltage (LX to GND): -0.3V to (VOUT + 0.3V); (3)Battery Voltage (BATT to GND): -0.3V to +6.0V; (4)SHDN, LBO to GND: -0.3V to +6.0V; (5)LBI, REF, FB, CLSEL to GND: -0.3V to (VOUT + 0.3V); (6)Switch Current (LX): -1.5A to +1.5A; (7)Output Current (OUT): -1.5A to +1.5A; (8)Continuous Power Dissipation (TA = +70℃), 8-Pin μMAX (derate 4.1mW/℃ above +70℃): 330mW; 10-Pin μMAX (derate 5.6mW/℃ above +70℃): 444mW; Operating Temperature Range: -40℃ to +85℃; (9)Junction Temperature: +150℃; (10)Storage Temperature Range: -65℃ to +165℃; (11)Lead Temperature (soldering, 10s): +300℃.

Features

MAX1675EUA+T features: (1)94% Efficient at 200mA Output Current; (2)16μA Quiescent Supply Current; (3)Internal Synchronous Rectifier (no external diode); (4)0.1μA Logic-Controlled Shutdown; (5)LBI/LBO Low-Battery Detector; (6)Selectable Current Limit for Reduced Ripple; (7)Low-Noise, Anti-Ringing Feature (MAX1676); (8)8-Pin and 10-Pin μMAX Packages.

Diagrams

MAX1675EUA+T Typical Operating Circuit

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