Update: 30 September, 2023
The MAX748A/MAX763A is a 3.3V output CMOS step-down switching regulator. The MAX748A accepts inputs from 3.3V to 16V and delivers up to 500mA. The MAX763A accepts inputs between 3.3V and 11V and delivers up to 500mA. Typical efficiencies are 85% to 90%. Quiescent supply current is 1.4mA (MAX763A), and only 0.2µA in shutdown. Pulse-width-modulation (PWM) current-mode control provides precise output regulation and excellent transient responses. Output voltage accuracy is guaranteed to be ±5% over line, load, and temperature variations. Fixed-frequency switching allows easy filtering of output ripple and noise, as well as the use of small external components. A 22µH inductor works in most applications, so no magnetics design is necessary. The MAX748A/MAX763A also feature cycle-by-cycle cur- rent limiting, overcurrent limiting, undervoltage lockout, and programmable soft-start protection. The MAX748A is available in 8-pin DIP and 16-pin wide SO packages; the MAX763A comes in 8-pin DIP and SO packages.
File format: PDF
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MD5 Checksum: 2EEF4CC62E8292A5148F4A59938A3CCD
Publication date: 21 March, 2012
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PDF Link: MAXIM MAX748A/MAX763A 3.3V Step-Down Current-Mode PWM DC-DC Converters Manual PDF