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LM5155QDSSTQ1 AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

LM5155QDSSTQ1 product

LM5155QDSSTQ1

DC DC Switching Controllers

TILM5155-Q1DC/DC controllerboostSEPICflybackautomotiveWSON-12

LM5155QDSSTQ1 is a TI automotive non-synchronous controller for boost, SEPIC and flyback supplies, supporting 100 kHz to 2.2 MHz operation and a 100 mV current-sense threshold.

Best for

  • Automotive wide-input boost converters
  • SEPIC converters
  • Non-isolated or isolated flyback controllers

Avoid if

  • A synchronous rectification controller is required
  • Hiccup-mode overload protection is mandatory
  • A fully integrated power stage is required

Check before use

  • Confirm the LM5155-Q1 no-hiccup option is appropriate.
  • Confirm external MOSFET gate charge satisfies the VCC regulator drive capability.
  • Validate current limiting and duty-cycle margin at minimum supply voltage.

Key specifications

BIAS operating range
2.97 V to 45 V
Switching frequency
100 kHz to 2.2 MHz
Current-limit threshold
100 mV typical
Package
12-pin WSON, 3.00 mm × 2.00 mm × 0.80 mm max

Compliance & Environment

RoHS
ROHS3 Compliant
REACH
-
MSL
Level 2, 260°C, 1 year
ECCN
-
HTSUS
-

Application

Automotive power conversionBoost and SEPIC suppliesFlyback power supplies

Datasheet

sszt557

800 KB

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CAD Models

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Alternative components

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Questions & answers

LM5155QDSSTQ1 is the orderable TI LM5155-Q1 12-pin WSON controller for non-synchronous boost, SEPIC and flyback converters. It uses peak-current-mode control and includes programmable switching frequency, UVLO, soft start, PGOOD and clock synchronization.