LM5156QDSSTQ1

Description：PROTOTYPE
Series：-
Mfr：Texas Instruments
Package：Bulk

SKU:9a8d37ed5edc Category: DC DC Switching Controllers Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：PROTOTYPE
Series：-
Mfr：Texas Instruments
Package：Bulk
Output Type：Transistor Driver
Function：Step-Up, Step-Up/Step-Down
Output Configuration：Positive
Topology：Boost, Flyback, SEPIC
Number of Outputs：1
Output Phases：1
Voltage - Supply (Vcc/Vdd)：3.5V ~ 60V
Frequency - Switching：100kHz ~ 2.2MHz
Duty Cycle (Max)：93%
Synchronous Rectifier：No
Clock Sync：Yes
Serial Interfaces：-
Control Features：Current Limit, Enable, Frequency Control, Power Good, Soft Start
Operating Temperature：-40°C ~ 150°C (TJ)
Mounting Type：Surface Mount
Package / Case：12-WFDFN Exposed Pad
Supplier Device Package：12-WSON (3x2)
Grade：-
Qualification：-

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LM5156QDSSTQ1

Overview

The LM5156QDSSTQ1 is a wide input voltage, non-synchronous boost, flyback, and SEPIC controller from Texas Instruments. It operates with an input voltage range of 2.97 V to 60 V and supports switching frequencies from 100 kHz to 2.2 MHz. The device features a maximum duty cycle of 93% and delivers a peak output current of 1.5 A. It is qualified under AEC-Q100 standards for automotive applications and functions within a temperature range of -40°C to +125°C. The component is housed in a WSON-12 package.

Feature Summary

Supports multiple topologies including boost, flyback, and SEPIC configurations
Wide input voltage capability up to 60 V
High-frequency operation up to 2.2 MHz
Automotive grade qualification

Applications

Automotive power supply systems
Boost converter designs
Flyback converter implementations
SEPIC topology circuits

Procurement Notes

Verify the specific suffix QDSSTQ1 against official Texas Instruments documentation to confirm package type and automotive qualification status. Ensure compatibility with required operating temperatures and input voltage ranges for the target application. Cross-reference datasheet revisions to validate pinout and electrical characteristics before integration.

Selection Notes

Select this controller for applications requiring high-frequency operation and wide input voltage ranges in automotive environments. Consider the WSON-12 package for space-constrained designs. Evaluate thermal performance requirements given the 125°C junction temperature limit. Verify external component ratings match the 60 V input and 2.2 MHz switching frequency specifications.

Part Context

This component belongs to the LM5156x family of wide VIN controllers designed for high-efficiency power conversion. It complements other Texas Instruments automotive-grade power management solutions by providing flexible topology support. The series targets demanding automotive applications requiring robust performance across varying input conditions.