Maxim Integrated

MAX13256ATB+T

Power Management

Manufacturer
MPN
MAX13256ATB+T
Product Type
Package / Case
TDFN-10-EP(3x3)
Key Attributes
36V H-Bridge Transformer Driver for Isolated Supplies

Technical Specifications

TypeDescription
Quiescent Current650 µA
Operating Temperature-40°C~+125°C
Continuous Drain Current800 mA
TypeDescription
FeaturesOver temperature protection;Under-voltage lockout;Overcurrent Protection
Supply Voltage8V~36V
Package / CaseTDFN-10-EP(3x3)

Product Introduction

The MAX13256 H-bridge transformer driver provides a simple solution for making isolated power supplies up to 10W. The device drives a transformer’s primary coil with up to 300mA of current from a wide 8V to 36V DC supply. The transformer’s secondary-to-primary winding ratio defines the output voltage, allowing selection of virtually any isolated output voltage.

The device features adjustable current limiting, allowing indirect limiting of secondary-side load currents. The current limit of the MAX13256 is set by an external resistor. A FAULT output asserts when the device detects an overtemperature or overcurrent condition. In addition, the device features a low-power mode to reduce the overall supply current to 0.65mA (typ) when the driver is not in use.

The device can be operated using the internal oscillator or driven by an external clock to synchronize multiple MAX13256 devices and precisely set the switching frequency. Internal circuitry guarantees a fixed 50% duty cycle to prevent DC current flow through the transformer, regardless of which clock source is used.

The device is available in a small 10-pin (3mm×3mm) TDFN package and is specified over the -40°C to +125°C automotive temperature range.

Features

  • 8V to 36V Supply Range
  • Up to 90% Efficiency
  • Provides Up to 10W to the Transformer
  • Undervoltage Lockout
  • 2.5V to 5V Compatible Logic Interface
  • Internal or External Clock Source
  • Adjustable Overcurrent Threshold
  • Integrated System Protection
  • Fault Detection and Indication
  • Overcurrent Limiting
  • Overtemperature Protection
  • Saves Space on Board
  • Small 10-Pin TDFN Package (3mm×3mm)

Applications

  • Power Meters
  • Isolated Fieldbus Interfaces
  • 24V PLC Supply Isolation
  • Medical Equipment
  • Motor Controls

Datasheet

📄 Open Download

Compliance & Export Codes

TypeDetails
RoHSROHS3
ECCNEAR99
CNHTS8542399000
USHTS8542390001
TARIC8542399000
TypeDetails
CAHTS8542390000
BRHTS85423999
INHTS85423900
MXHTS8542.39.99

Sourcing Information

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