MAX1953/MAX1954/MAX1957 is a family of versatile, economical, synchronous current-mode, pulse-width modulation (PWM) buck controllers
The MAX1953, MAX1954, and MAX1957 are a family of low‑cost, high‑frequency, current‑mode PWM buck controllers designed for applications where size and cost are critical. They operate from a 3 V to 5.5 V input range and deliver up to 10 A (MAX1953) or 25 A (MAX1954) of output current.
Key features include fixed‑frequency switching (1 MHz for MAX1953, 300 kHz for MAX1954/1957), internal soft‑start, thermal overload protection, and undervoltage lockout. The devices are offered in a compact 10‑pin UMAX package and are suited for printers, scanners, graphics cards, microprocessor core supplies, and telecom power distribution.
| Switching Frequency (MAX1953) | 1 MHz |
|---|---|
| Input Voltage Range | 3 V to 5.5 V |
| Maximum Output Current (MAX1954) | 25 A |
| Efficiency | 93 % |
| Package Type | 10‑pin UMAX |
The MAX1953 operates at a fixed 1 MHz switching frequency.
It supports an input voltage range from 3 V to 5.5 V.
The MAX1954 can provide up to 25 A of output current.