LM65680-Q1数据手册TI中文资料规格书

描述 Description

The LM656x0-Q1 are a family of stackable, automotive buck converters designed for high efficiency, high power density, and ultra-low electromagnetic interference (EMI). The converters operate over a wide input voltage range of 3V to 70V simplifying input surge protection design.

The low EMI operation is enabled with minimized loop inductance, pin-selectable SW node slew-rate control and dual-random spread spectrum (DRSS). The DRSS significantly reduces peak emissions through a combination of triangular and pseudo-random modulation while keeping output voltage ripple very low.

The current-mode control architecture with 36ns minimum on-time allows high conversion ratios at high frequencies, easy loop compensation, fast transient response, and excellent load and line regulation. Up to two converters can be set up in an interleaved mode (paralleled outputs) with accurate current sharing for supporting output current up to 16A.

特性 Features

AEC-Q100 qualified for automotive applications:

Temperature grade 1: –40°C to +125°C, TA



Wide input voltage range: 3V to 70V

1% accurate, VOUT from 0.8V to 60V

Optimized for low EMI requirements

Facilitates CISPR 25 Class 5 compliance

Pin-configurable dual-random spread spectrum and slew-rate control reduce peak emissions

Enhanced HotRod™ QFN package with symmetrical pinout

Switching frequency from 300kHz to 2.2MHz

Pin-configurable AUTO or FPWM operation



Low minimum on time: 36ns (typical)

Enables 36V to 3.3V conversion at 2.1MHz



High-efficiency power conversion

> 95% peak efficiency, 12VIN to 5VOUT, 400kHz

No-load input current: 2.1µA



High power density

Internal compensation, OCP, and TSD

4.5mm × 4.5mm eQFN-26 with wettable flanks

ΘJA = 18°C/W (LM65680-Q1EVM)



VIN to PGND pin clearance: 1.1mm