Maxim MAX5052AEUA+T

任意一种10.8V ~ 24V

Overview

The MAX5052/MAX5053 current-mode PWM controllers contain all the control circuitry required for the design of wide-input-voltage isolated and nonisolated power supplies. The MAX5052AEUA is well suited for universal input (rectified 85VAC to 265VAC) or telecom (-36VDC to -72VDC) power supplies. The MAX5053 is well suited for low-input-voltage (10.8VDC to 24VDC) power supplies. The MAX5052/MAX5053 contain an internal error amplifier that regulates the tertiary winding output voltage. This implements a primary-side regulated, isolated power supply, eliminating the need for an optocoupler. An input undervoltage lockout (UVLO) is provided for programming the input-supply start voltage and to ensure proper operation during brownout conditions. The input-supply start voltage is externally programmable with a voltage-divider. To shutdown the device, the UVLO pin is pulled low. Internal digital soft-start reduces output voltage overshoot. The internal thermal shutdown circuit protects the device in the event the junction temperature exceeds +130°C. The MAX5052AEUA has an internal bootstrap UVLO with large hysteresis that requires a minimum voltage of 23.6V for startup. The MAX5053 does not have the internal bootstrap UVLO and can be biased directly from a minimum voltage of 10.8V. The 262kHz switching frequency is internally trimmed to ±12% accuracy; this allows the optimization of the magnetic and filter components resulting in compact, cost-effective power supplies. The MAX5052A/MAX5053A are offered with a 50% maximum duty-cycle limit. The MAX5052B/MAX5053B are offered with a 75% maximum duty-cycle limit. These devices are available in 8-pin μMAX packages and operate over the -40°C to +85°C temperature range.

Features

Either Output Isolation
Packaged with 8-TSSOP, 8-MSOP (0.118, 3.00mm Width)
Switching Frequency at 262kHz
With 8 pins
Output Current at 1A
Operating Supply Voltage at the range of 24V

Surface Mount Mounting Type

Applications

There are a lot of Maxim Integrated
MAX5052AEUA+T AC DC Converters applications.

• AC/DC Adaptors/Chargers for Cordless Phone
• AC/DC Adaptors/Chargers for PDAs
• AC/DC Adaptors/Chargers for E-books
• Adaptors for Portable Media Player
• Adaptors for DSCs
• Set-top boxes
• DVD players
• Records
• Linear Adapter Replacements
• Chargers for cell/cordless phones