MAXIM MAX730A/MAX738A/MAX744A Manual

MAX730A/MAX738A/MAX744A are 5V output CMOS step-down switching regulators. The MAX738A/ MAX744A accept inputs from 6V to 16V and deliver 750mA. The MAX744A guarantees 500mA load capability for inputs above 6V and has tighter oscillator frequency limits for low-noise (radio) applications. The MAX730A accepts inputs between 5.2V and 11V and delivers 450mA for inputs above 6V. Typical efficien- cies are 85% to 96%. Quiescent supply current is 1.7mA and only 6µA in shutdown. Pulse-width modulation (PWM) current-mode control provides precise output regulation and excellent tran- sient responses. Output voltage accuracy is guaran- teed to be ±5% over line, load, and temperature varia- tions. Fixed-frequency switching allows easy filtering of output ripple and noise, as well as the use of small external components. These regulators require only a single inductor value to work in most applications, so no inductor design is necessary. The MAX730A/MAX738A/MAX744A also feature cycle- by-cycle current limiting, overcurrent limiting, undervolt- age lockout, and programmable soft-start protection.

Brand: MAXIM

File format: PDF

Size: 242 KB

MD5 Checksum: 23B98BB7B9B56B38433E1CEC39876680

Publication date: 21 March, 2012

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PDF Link: MAXIM MAX730A/MAX738A/MAX744A Manual PDF

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