Datasheet > XR76203-Q

XR76203-Q

更新时间： 2024-11-26 01:01:31

品牌	Logo	应用领域
艾科嘉 - EXAR		/
页数	文件大小	规格书
20页	689K
描述
AEC-Q100 Qualified 40V PowerBlox 3A/5A/8A Synchronous Step Down COT Regulator

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中文翻译

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数据手册

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XR76203-Q 数据手册

XR76203-Q/XR76205-Q/XR76208-Q

AEC-Q100 Qualified 40V PowerBlox

3A/5A/8A Synchronous Step Down COT Regulator

FEATURES

General Description

■ Automotive AEC-Q100 Qualified

❏ Temperature Grade 1: -40°C to 125°C

❏ HBM ESD Class Level 2

❏ CDM ESD Class Level C4B

■ Controller, drivers, bootstrap diode and MOS-

FETs integrated in one package

■ 3A, 5A and 8A Step Down Regulators

❏ Wide 5.5V to 40V Input Voltage Range

❏ ≥0.6V Adjustable Output Voltage

■ Proprietary Constant On-Time Control

❏ No Loop Compensation Required

❏ Stable Ceramic Output Capacitor Operation

❏ Programmable 200ns to 2μs On-Time

❏ Constant 100kHz to 800kHz Frequency

■ Selectable CCM or CCM/DCM

The XR76203-Q, XR76205-Q and XR76208-Q are synchronous step-

down regulators combining the controller, drivers, bootstrap diode and

MOSFETs in a single package for point-of-load supplies well suited for

automotive applications. Qualified per AEC-Q100, the XR76203-Q,

XR76205-Q and XR76208-Q have load current ratings of 3A, 5A and 8A

respectively. A wide 5.5V to 40V input voltage range allows for single sup-

ply operation from 12V battery systems required to withstand load dump,

industry standard 24V ±10%, 18V-36V, and rectified 18VAC and 24VAC

rails.

With a proprietary emulated current mode Constant On-Time (COT) con-

trol scheme, the XR76203-Q, XR76205-Q and XR76208-Q provide

extremely fast line and load transient response using ceramic output

capacitors. They require no loop compensation, simplifying circuit imple-

mentation and reducing overall component count. The control loop also

provides 0.07% load and 0.15% line regulation and maintains constant

operating frequency. A selectable power saving mode allows the user to

operate in discontinuous conduction mode (DCM) at light current loads

thereby significantly increasing the converter efficiency.

❏ CCM/DCM for high efficiency at light-load

❏ CCM for constant frequency at light-load

■ Programmable Hiccup Current Limit with

Thermal Compensation

■ Precision Enable and Power Good flag

■ Programmable Soft-start

■ 30-pin 5x5mm QFN package with wettable flanks

A host of protection features, including over-current, over-temperature,

short-circuit and UVLO, helps achieve safe operation under abnormal

operating conditions.

The XR76203/5/8-Q are available in a RoHS-compliant, green/halogen-

free space-saving QFN 5x5mm package.

APPLICATIONS

■ Automotive Systems

■ Distributed Power Architecture

■ Point-of-Load Converters

■ Power Supply Modules

■ FPGA, DSP, and Processor Supplies

■ Industrial and Military

Ordering Information - Back Page

Typical Application

3.340

3.330

3.320

3.310

3.300

3.290

3.280

3.270

3.260

V_IN

VIN

PVIN

BST

C_BST

Enable/Mode

EN/MODE

PGOOD

V_OUT

Power Good

C_IN

XR76208-Q

VCC

XR76205-Q

XR76203-Q

R_LIM

C_FF

ILIM

C_OUT

TON

AGND

C_VCC

C_SS

R_ON

PGND

10 15 20 25 30 35 40

V_IN(V)

Line Regulation

1 / 20

exar.com/XR76203-Q/XR76205-Q/XR76208-Q

Rev 1C

12 3 4 5 6 7...20

中文翻译

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与XR76203-Q相关器件

型号	品牌	获取价格	描述	数据表
XR76205	EXAR	获取价格	3A/5A/8A Synchronous Step Down COT Regulator
XR76205EL-F	EXAR	获取价格	3A/5A/8A Synchronous Step Down COT Regulator
XR76205ELMTR-F	EXAR	获取价格	3A/5A/8A Synchronous Step Down COT Regulator
XR76205EL-Q	EXAR	获取价格	AEC-Q100 Qualified 40V PowerBlox 3A/5A/8A Synchronous Step Down COT Regulator
XR76205ELTR-F	EXAR	获取价格	3A/5A/8A Synchronous Step Down COT Regulator
XR76205ELTR-Q	EXAR	获取价格	AEC-Q100 Qualified 40V PowerBlox 3A/5A/8A Synchronous Step Down COT Regulator
XR76205EVB	EXAR	获取价格	EVAL BOARD XR76205 5A 40V COT
XR76205EVB-Q	EXAR	获取价格	AEC-Q100 Qualified 40V PowerBlox 3A/5A/8A Synchronous Step Down COT Regulator
XR76205-Q	EXAR	获取价格	AEC-Q100 Qualified 40V PowerBlox 3A/5A/8A Synchronous Step Down COT Regulator
XR76208	EXAR	获取价格	3A/5A/8A Synchronous Step Down COT Regulator

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