Datasheet > LM25141QRGERQ1

LM25141QRGERQ1

更新时间： 2024-11-29 11:08:03

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
50页	2884K
描述
具备展频频谱的汽车级 2.2MHz 低 IQ 同步降压控制器 \| RGE \| 24 \| -40 to 150

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LM25141-Q1

SNVSAP9A –MARCH 2017–REVISED FEBRUARY 2018

LM25141-Q1 2.2-MHz, 42-V Synchronous Buck Controller With Low I_Q

1 Features

2 Applications

•

AEC-Q100 Qualified for Automotive Applications:

•

Automotive Applications Including:

–

Device Temperature Grade 1: –40°C to

+125°C Ambient Operating Temperature

–

Infotainment Systems

Instrumentation Clusters

–

Device HBM ESD Classification Level 2

Device CDM ESD Classification Level C4B

Advanced Driver Assistance Systems (ADAS)

3 Description

•

V_IN3.8 V to 42 V (47 V Absolute Maximum)

The LM25141-Q1 is a synchronous buck controller,

intended for high-voltage, wide-V_IN, step-down

regulator 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

LM25141-Q1 features slew rate control to simplify the

compliance with CISPR and automotive EMI

requirements.

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

1.5 V to 15 V With ±0.8% Accuracy

•

Optional Frequency Shift by Varying an Analog

Voltage or RT Resistor

Meets CISPR 25 / EN 55025 EMI Standards

–

Fixed 2.2-MHz or 440-kHz Switching

Frequency With ±5% Accuracy

High-Side and Low-Side Gate Drive With Slew

Rate Control

The LM25141-Q1 has two selectable switching

frequencies: 2.2 MHz and 440 kHz. Gate drivers with

slew rate control can be adjusted to reduce EMI.

Optional Spread Spectrum

•

Optional Synchronization to an External Clock

Shutdown Mode I_Q: 10 µA Typical

In light or no-load conditions, the LM25141-Q1

operates in skip cycle mode for improved low power

efficiency. The LM25141-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.

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 PWM

VQFN-24 Package With Wettable Flanks

LM25141-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.

Create a Custom Design Using the LM25141-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

LM25141-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...50

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与LM25141QRGERQ1相关器件

型号	品牌	获取价格	描述	数据表
LM25141QRGETQ1	TI	获取价格	具备展频频谱的汽车级 2.2MHz 低 IQ 同步降压控制器 \| RGE \| 24 \| -
LM25141QURGERQ1	TI	获取价格	LM25141-Q1 2.2-MHz, 42-V Synchronous Buck Controller With Low IQ
LM25141RGER	TI	获取价格	低 IQ、宽输入范围同步降压控制器 \| RGE \| 24 \| -40 to 125
LM25141RGET	TI	获取价格	低 IQ、宽输入范围同步降压控制器 \| RGE \| 24 \| -40 to 125
LM25143	TI	获取价格	具有超低 IQ 的 3.5V 至 42V 双路输出、可堆叠、同步降压直流/直流控制器
LM25143-Q1	TI	获取价格	汽车类 3.5V 至 42V 低 lq 双路输出可堆叠同步降压直流/直流控制器
LM25143QRHARQ1	TI	获取价格	汽车类 3.5V 至 42V 低 lq 双路输出可堆叠同步降压直流/直流控制器 \| RHA
LM25143RHAR	TI	获取价格	具有超低 IQ 的 3.5V 至 42V 双路输出、可堆叠、同步降压直流/直流控制器 \|
LM25145	TI	获取价格	具有宽占空比范围的 6V 至 42V 同步降压直流/直流控制器
LM25145RGYR	TI	获取价格	具有宽占空比范围的 6V 至 42V 同步降压直流/直流控制器 \| RGY \| 20 \|

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