MAX15157B

60V Current-Mode Buck Controller with Accurate Current Report

60V Current-Mode Buck Controller with Integrated Current Monitor


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Description

The MAX15157B belongs to the family of MAX15157 4-switch, buck–boost controllers. MAX15157B drives two external MOSFETs in half-bridge buck configuration. The output voltage can be dynamically set through the 1V to 2.2V reference input (REFIN) for modular design support.


The switching frequency is controlled either through an external resistor that sets the internal oscillator frequency, or by synchronizing the regulator to an external clock. The device is designed to support 120kHz to 1MHz switching frequencies. The controller has a dedicated undervoltage-lockout pin (UVLO) and an accurate enable-input threshold for flexible power-sequence configuration. The controller also has multiple fault-protection circuits to protect against overcurrent (OCP), output overvoltage (OVP), input UVLO and thermal shutdown.


The MAX15157B features an adjustable internal compensation ramp. The device incorporates an accurate current-sense amplifier that reports output current through an analog output (IMON). The device allows single-phase or multiphase (up to four-phase) operation.


The device is footprint compatible with MAX15157 and is available in a 5mm x 5mm, 32-pin TQFN package and supports a -40°C to +125°C junction temperature range.

MAX15157B: Typical Application Circuit MAX15157B: Typical Application Circuit Enlarge+

Key Features

  • Wide Operating Range Reduces Development Time
    • 8V to 60V Input-Voltage Range
    • 3V to 56V Output-Voltage Range
    • 120kHz to 1MHz Switching-Frequency Range
    • -40°C to +125°C Temperature Range
  • Integration Reduces Design Footprint
    • Internal LDO for Bias-Supply Generation
    • Synchronization Input
    • Current-Monitor Output
  • Robust Fault Protection Improves Quality and Simplifies System Design
    • Adjustable Input Undervoltage Lockout
    • Average and Cycle-by-Cycle Overcurrent Protection
    • Input Undervoltage-Fault Protection
    • Multiple Levels of Overvoltage Protection
    • Thermal Shutdown
  • Adjustable Slope Compensation
  • Multiphase Support
  • Small 5mm x 5mm, 32-pin TQFN, 0.5mm Pitch

Applications/Uses

  • Automotive
  • Communication
  • Industrial

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX15157BEVKIT: Evaluation Kit for the MAX15157B
Request Reliability Report for: MAX15157B 
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C   Material Composition  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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