MAX5082 Datasheet | Maxim Integrated

Description The MAX5082/MAX5083 are 250k Hz PWM step-down DC-DC converters with an on-chip, 0.3 Ω high-side switch. The input voltage range is 4.5V to 40V for the MAX5082 and 7.5V to 40V for the MAX5083. The output is adjustable from 1.23V to 32V and can deliver up to 1.5A of load current. Both devices utilize a voltage-mode control scheme for good noise immunity in the high-voltage switching environment and offer external pensation allowing for maximum flexibility with a wide selection of inductor values and capacitor types. The switching frequency is internally fixed at 250k Hz and can be synchronized to an external clock signal through the SYNC input. Light load efficiency is improved by automatically switching to a pulse-skip mode. All devices include programmable undervoltage lockout and soft-start. Protection features include cycle-bycycle current limit, hiccup-mode output short-circuit protection, and thermal shutdown. Both devices are available in a space-saving, high-power (2.7W), 16-pin TQFN package and are rated for operation over the -40°C to +125°C temperature range. Features - 4.5V to 40V (MAX5082) or 7.5V to 40V (MAX5083) Input Voltage Range - 1.5A Output Current - VOUT Range From 1.23V to 32V - Internal High-Side Switch - Fixed 250k Hz Internal Oscillator - Automatic Switchover to Pulse-Skip Mode at Light Loads - External Frequency Synchronization - Thermal Shutdown and Short-Circuit Protection - Operates Over the -40°C to +125°C Temperature Range - Space-Saving (5mm x 5mm) High-Power 16-Pin TQFN Package MAX5082/MAX5083 Ordering Information PART MAX5082ATE MAX5083ATE TEMP RANGE -40°C to +125°C -40°C to +125°C PIN-PACKAGE 16 TQFN-EP- 16 TQFN-EP- Applications Fire Wire® Power Supplies Distributed Power Automotive Industrial - EP = Exposed pad. Pin Configurations appear at end of data sheet. Fire Wire is a registered trademark of Apple puter, Inc. Typical Operating Circuits VIN 4.5V TO 40V CF D1 IN R1 DVREG C- C+ BST LX CBST L1 VOUT...