Datasheet > LM5141-Q1

LM5141-Q1

更新时间： 2024-11-24 11:07:55

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
49页	2866K
描述
汽车类宽输入 2.2MHz 低 IQ 同步降压控制器

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LM5141-Q1

SNVSAJ6D –JULY 2016–REVISED DECEMBER 2017

LM5141-Q1 Wide Input Range Synchronous Buck Controller

1 Features

2 Applications

•

Qualified for Automotive Applications

•

Automotive Applications Including:

AEC-Q100 Qualified With the Following Results:

–

Infotainment Systems

–

Device Temperature Grade 1: –40°C to

+125°C Ambient Operating Temperature

Instrumentation Clusters

Advanced Driver Assistance Systems (ADAS)

–

Device HBM ESD Classification Level 2

Device CDM ESD Classification Level C4B

3 Description

The LM5141-Q1 is a synchronous buck controller,

intended for high voltage wide V_INstep-down

converter applications. The control method is peak

current mode control. Current mode control provides

inherent line feed-forward, cycle-by-cycle current

limiting, and ease-of-loop compensation. The

LM5141-Q1 features slew rate control to simplify the

compliance with CISPR and automotive EMI

requirements.

•

V_IN: 3.8 V to 65 V (70 V Absolute Maximum)

Output: Fixed 3.3 V, 5 V, or Adjustable From

1.5 V to 15 V with ±0.8% Accuracy

•

Fixed 2.2-MHz or 440-kHz Switching Frequency

with ±5% Accuracy

High-Side and Low-Side Gate Drive With Slew-

Rate Control

Optional Frequency Shift by Varying an Analog

Voltage or RT Resistor

The LM5141-Q1 has two selectable switching

frequencies: 2.2 MHz and 440 kHz. Gate drivers with

slew rate Control that can be adjusted to reduce EMI.

•

Optional Synchronization to an External Clock

Optional Spread Spectrum

In light or no-load conditions, the LM5141-Q1

operates in skip cycle mode for improved low power

efficiency. The LM5141-Q1 has a high voltage bias

regulator with automatic switch-over to an external

bias to reduce the I_Qcurrent from V_IN. Additional

features include frequency synchronization, cycle-by-

cycle current limit, hiccup mode fault protection for

sustained overload, and power good output.

Shutdown Mode I_Q: 10 µA Typical

Low Standby Mode I_Q: 35 µA Typical

75-mV Current Limit Threshold with ±0.9%

Accuracy

•

External Resistor or DCR Current Sensing

Output Enable Logic Input

Hiccup Mode for Sustained Overload

Power-Good Indication Output

Device Information⁽¹⁾

PART NUMBER

PACKAGE

BODY SIZE (NOM)

Selectable Diode Emulation or Forced Pulse-

Width Modulation

LM5141-Q1

VQFN (24)

4.00 mm × 4.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

•

24-pin VQFN Package With Wettable Flanks

Create a Custom Design Using the LM5141-Q1

With the WEBENCH^®Power Designer

Simplified Schematic

V_IN

C_IN

VIN

VCC

C_VCC

D_BST

C_BST

RES

L_OUT

V_OUT

HOL

R_SENSE

DITH

LM5141-Q1

C_OUT

C_RES

C_SS

C_DITH

LOL

PGND

DEMB

VOUT

VCCX

R_COMPC_COMP

COMP

AGND

OSC VDDA

R_T

C_VDDA

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

12 3 4 5 6 7...49

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与LM5141-Q1相关器件

型号	品牌	获取价格	描述	数据表
LM5141-Q1_V01	TI	获取价格	LM5141-Q1 Wide Input Range Synchronous Buck Controller
LM5141QRGERQ1	TI	获取价格	汽车类宽输入 2.2MHz 低 IQ 同步降压控制器 \| RGE \| 24 \| -40 t
LM5141QRGETQ1	TI	获取价格	汽车类宽输入 2.2MHz 低 IQ 同步降压控制器 \| RGE \| 24 \| -40 t
LM5141QURGERQ1	TI	获取价格	LM5141-Q1 Wide Input Range Synchronous Buck Controller
LM5141RGER	TI	获取价格	低 IQ、宽输入范围同步降压控制器 \| RGE \| 24 \| -40 to 125
LM5141RGET	TI	获取价格	低 IQ、宽输入范围同步降压控制器 \| RGE \| 24 \| -40 to 125
LM5143	TI	获取价格	具有超低 IQ 的 3.5V 至 65V 双路输出、可堆叠、同步降压直流/直流控制器
LM5143A-Q1	TI	获取价格	汽车类 3.5V 至 65V 低 IQ 双路输出可堆叠同步降压直流/直流控制器
LM5143-Q1	TI	获取价格	LM25149 42-V Synchronous Buck DC/DC Controller with Ultra-Low IQ and Integrated Active EMI
LM5143QRHARQ1	TI	获取价格	汽车类 3.5V 至 65V 低 IQ 双路输出可堆叠同步降压直流/直流控制器 \| RHA

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