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A4402KLPTR-T

更新时间： 2024-01-06 17:27:18

品牌	Logo	应用领域
急速微 - ALLEGRO		转换器稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管 PC
页数	文件大小	规格书
17页	326K
描述
Constant On-Time Buck Converter With Integrated Linear Regulator

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技术参数
数据手册

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A4402KLPTR-T 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	TSSOP
包装说明：	LEAD FREE, MO-153ABT, TSSOP-16	针数：	16
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	1.69
Samacsys Confidence：	3	Samacsys Status：	Released
2D Presentation：	https://componentsearchengine.com/2D/0T/1139186.2.1.png	Schematic Symbol：	https://componentsearchengine.com/symbol.php?partID=1139186
PCB Footprint：	https://componentsearchengine.com/footprint.php?partID=1139186	3D View：	https://componentsearchengine.com/viewer/3D.php?partID=1139186
Samacsys PartID：	1139186	Samacsys Image：	https://componentsearchengine.com/Images/9/A4402KLPTR-T.jpg
Samacsys Thumbnail Image：	https://componentsearchengine.com/Thumbnails/2/A4402KLPTR-T.jpg	Samacsys Pin Count：	17
Samacsys Part Category：	Integrated Circuit	Samacsys Package Category：	Small Outline Packages
Samacsys Footprint Name：	Package LP, 16-Pin eTSSOP	Samacsys Released Date：	2019-01-16 12:18:53
Is Samacsys：	N	模拟集成电路 - 其他类型：	SWITCHING REGULATOR
控制模式：	CURRENT-MODE	控制技术：	PULSE WIDTH MODULATION
最大输入电压：	50 V	最小输入电压：	6 V
标称输入电压：	8 V	JESD-30 代码：	R-PDSO-G16
JESD-609代码：	e3	长度：	5 mm
湿度敏感等级：	2	功能数量：	1
端子数量：	16	最高工作温度：	150 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	HTSSOP	封装等效代码：	TSSOP16,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
座面最大高度：	1.2 mm	最大供电电流 (Isup)：	6 mA
表面贴装：	YES	切换器配置：	BUCK
最大切换频率：	2000 kHz	温度等级：	AUTOMOTIVE
端子面层：	Matte Tin (Sn)	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	40	宽度：	4.4 mm
Base Number Matches：	1

A4402KLPTR-T 数据手册

A4402

Constant On-Time Buck Converter

With Integrated Linear Regulator

Features and Benefits

▪ 2 MHz switching frequency

▪ Adjustable soft start timer

▪ Watchdog input

▪ Power-on reset output

▪ Adjustable buck and linear regulators

▪ Enable input

Description

The A4402 is a dual-output regulator, combining in a single

packageaconstanton-timebuckregulatorandalinearregulator

(LDO)—each with adjustable output voltages. It is ideal for

applications that require two regulated voltages, such as in

microcontroller- or DSP-based applications requiring core

and I/O voltage rails.

▪ 6 to 50 V supply voltage range

▪ Overcurrent protection

▪ Undervoltage lockout (UVLO)

▪ Thermal shutdown protection

The buck regulator output supplies the adjustable linear

regulator to reduce power dissipation and increase overall

efficiency. The switching regulator is capable of operating

above 2 MHz, allowing the use of small low value inductors

and capacitors while avoiding sensitive EMI frequency bands

such as AM radio in automotive applications.

Applications:

AUTOMOTIVE (“K” VERSION)

COMMERCIAL (“E” VERSION)

• Powersteeringcontrolunits • Photo and inkjet printers

• Transmission control units • Industrial controls

Protection features include undervoltage lockout and thermal

shutdown. In case of a shorted load, each regulator features

overcurrent protection.

• Lighting control units

• Infotainment

• Cluster

• Distributed power systems

• Networking applications

• Point-of-sale

The device has an integrated power-on reset with adjustable

delay to monitor LDO output voltage and provide a signal that

can be used to reset a DSP or microcontroller. It also includes

a watchdog circuit.

• Centerstack

• Security systems

• Other body control

Package: 16-pin TSSOP with exposed

thermal pad (suffix LP)

The A4402 is provided in a 16-pin TSSOP, with exposed pad

for enhanced thermal dissipation. It is lead (Pb) free, with

100% matte tin leadframe plating.

Not to scale

Typical Application

V_BAT

R_ton

750 kΩ

TON

VIN1

C_TSET

0.1 μF

TSET

Efficiency vs. Output Current

10 μF

BOOT

0.15 μF

μF

0.01

Switching Regulator Output

V_SW

C_POR

5 V

33 μH

POR

ISEN

3.3

0.33 μF

A4402

SENSE

4.7 μF

GND

31.6

V_OUT(V)

kΩ

V_O2

FB1

9.76 kΩ

20 kΩ

NPOR

VIN2

VO2

Linear Regulator Output

V_LIN

ENB

WDI

3.3 V

250 mA

200 400 600 800 1000 1200

1 μF

kΩ

4.7 kΩ

I_OUT(mA)

FB2

GND

5.62 kΩ

Data is for reference only. Efficiency data from circuit shown in left panel.

4402-DS, Rev. 9

12 3 4 5 6 7...17

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