LM62440CPPQRJRRQ1集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF中文资料

LM62440CPPQRJRRQ1属于集成电路（IC）的稳压器-DC-DC开关稳压器。由德州仪器制造生产的LM62440CPPQRJRRQ1稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。

1 Features

• AEC-Q100 qualified for automotive applications

– Temperature grade 1: –40°C to +150°C, TJ

• Functional Safety-Capable

– Documentation available to aid functional safety

system design

• Optimized for ultra low EMI requirements

– HotRod™ package and parallel input path

minimize switch node ringing

– Spread spectrum reduces peak emissions

– 2.1-MHz and 400-kHz factory options

– Adjustable SW node rise time

– Pin selectable FPWM mode for constant

frequency at light loads

• Designed for automotive applications

– Supports 42-V automotive load dump

– ±1 total output regulation accuracy

– VOUT adjustable from 1 V to 95 of VIN, with

factory options for 5-V and 3.3-V fixed output

voltages

• High efficiency power conversion at all loads

– 7-μA no load current at 13.5 VIN, 3.3 VOUT

– 83 PFM efficiency at 1 mA, 13.5 VIN, 5 VOUT

– External bias option for improved efficiency

• Suitable for scalable power supplies

– Pin compatible with:

• LM61440-Q1 (36 V, 4 A, adjustable fSW)

• LM61460-Q1 (36 V, 6 A, adjustable fSW)

• LMQ62440-Q1 (36 V, 4 A, internal

capacitors)

2 Applications

• Automotive infotainment and cluster: head unit,

media hub, USB charge, display

• Automotive ADAS and body electronics

3 Description

The LM62440-Q1 is an automotive-focused,

high-performance, DC-DC synchronous step-down

converter. With integrated high-side and low-side

MOSFETs, up to 4 A of output current is delivered

over a wide input range of 3.0 V to 36 V; 42-V

tolerance supports load dump for durations of 400

ms. The LM62440-Q1 implements soft recovery from

dropout, eliminating overshoot on the output.

The LM62440-Q1 is specifically designed for minimal

EMI. The device incorporates pseudorandom spread

spectrum, adjustable SW node rise time, a low-EMI

VQFN-HR package featuring low switch node ringing,

and an optimized pinout for ease of use. The

switching frequency can be synchronized between

200 kHz and 2.2 MHz to avoid noise sensitive

frequency bands. In addition, either 2.1-MHz or 400-

kHz frequency factory options can be selected for

improved efficiency at low operating frequency or

smaller solution size at high operating frequency.

Auto mode enables frequency foldback when

operating at light loads, allowing an unloaded current

consumption of only 7 μA (typical) and high light

load efficiency. Seamless transition between PWM

and PFM modes, along with very low MOSFET

ON resistances and an external bias input, provides

exceptional efficiency across the entire load range.