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LM5177

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78-V wide VIN synchronous 4-switch buck-boost controller with bidirectional operation

Product details

Topology Buck-Boost Vin (min) (V) 2.8 Vin (max) (V) 78 Vout (max) (V) 78 Vout (min) (V) 3.3 Duty cycle (max) (%) 100 Switching frequency (min) (kHz) 90 Switching frequency (max) (kHz) 2200 Iq (typ) (mA) 0.06 Features Adjustable UVLO, Adjustable current limit, Dynamic Voltage Scaling, Enable, Frequency synchronization, Light Load Efficiency, Load Disconnect, Power good, Spread Spectrum, Synchronous Rectification, Tracking, UVLO adjustable Operating temperature range (°C) -40 to 150 Rating Catalog Type Controller
Topology Buck-Boost Vin (min) (V) 2.8 Vin (max) (V) 78 Vout (max) (V) 78 Vout (min) (V) 3.3 Duty cycle (max) (%) 100 Switching frequency (min) (kHz) 90 Switching frequency (max) (kHz) 2200 Iq (typ) (mA) 0.06 Features Adjustable UVLO, Adjustable current limit, Dynamic Voltage Scaling, Enable, Frequency synchronization, Light Load Efficiency, Load Disconnect, Power good, Spread Spectrum, Synchronous Rectification, Tracking, UVLO adjustable Operating temperature range (°C) -40 to 150 Rating Catalog Type Controller
HTSSOP (DCP) 38 62.08 mm² 9.7 x 6.4
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Technical documentation

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Type Title Date
User guide LM5177 Buck-Boost Controller Evaluation Module User's Guide (Rev. B) PDF | HTML 27 Apr 2023
Application note Dynamic Current Tracking With the LM5177 4-Switch Buck Boost Controller PDF | HTML 24 Feb 2023
Application note Constant Current Operation Using the Internal Current Limiter PDF | HTML 27 Jan 2023
Application note How to Design a Non-Inverting 4-Switch Buck-Boost Converter Using the LM5177x PDF | HTML 15 Dec 2022
Certificate LM5177EVM-HP EU RoHS Declaration of Conformity (DoC) 16 Dec 2021

Design & development

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PCB layout

LM5177EVM-HP PCB Layout (Rev. A)

SNVR526A.ZIP (1766 KB)
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HTSSOP (DCP) 38 View options

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