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LM5164-Q1

Texas Instruments
Part Number LM5164-Q1
Manufacturer Texas Instruments
Description 100-V Input 1-A synchronous buck DC/DC converter
Published Oct 1, 2019
Detailed Description Product Folder Order Now Technical Documents Tools & Software Support & Community LM5164-Q1 SNVSB51A – SEPTEMBER 20...
Datasheet PDF File LM5164-Q1 PDF File

LM5164-Q1
LM5164-Q1

Overview
Product Folder Order Now Technical Documents Tools & Software Support & Community LM5164-Q1 SNVSB51A – SEPTEMBER 2018 – REVISED MARCH 2019 LM5164-Q1 100-V Input, 1-A synchronous buck DC/DC converter with ultra-low IQ 1 Features •1 AEC-Q100-qualified for automotive applications – Device temperature grade 1: –40°C to +125°C, ambient temperature range • Designed for reliable and rugged applications – Wide input voltage range of 6 V to 100 V – Junction temperature range: –40°C to +150°C – Fixed 3-ms internal soft-start timer – Peak and valley current-limit protection – Input UVLO and thermal shutdown protection • Suited for scalable automotive power supplies – Low minimum on- and off-times of 50 ns – Adjustable switching frequency up to 1 MHz – Diode emulation for high light-load efficiency – 10.
5-µA no-load input quiescent current – 3-µA shutdown quiescent current – Optimized for CISPR 25 EMI standard • Integration reduces solution size and cost – COT mode control architecture – Integrated 0.
725-Ω NFET buck switch supports wide duty cycle range – Integrated 0.
34-Ω NFET synchronous rectifier eliminates external Schottky diode – 1.
2-V internal voltage reference – No loop compensation components – Internal VCC bias regulator and boot diode • Create a custom design using WEBENCH® power designer 2 Applications • Automotive 48-V mild hybrid ECU bias supplies • Automotive DC/DC converters • Automotive HVAC compressors and PTC heaters 3 Description The LM5164-Q1 synchronous buck converter is designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components.
A minimum controllable on-time of 50 ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48-V nominal input to low-voltage rails for reduced system complexity and solution cost.
The LM5164-Q1 operates during input voltage dips as low as 6 V, at nearly 100% duty cycle if needed, making it an excellent choice for highperformance 48-V ...


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