Datasheet > LM46002AQPWPTQ1

LM46002AQPWPTQ1

更新时间： 2024-11-26 11:08:07

品牌	Logo	应用领域
德州仪器 - TI		转换器
页数	文件大小	规格书
52页	1736K
描述
通过汽车级认证的 3.5V 至 60V、2A 同步降压电压转换器 \| PWP \| 16 \| -40 to 125

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LM46002-Q1

SNVSAA2A –JULY 2015–REVISED AUGUST 2015

LM46002-Q1 SIMPLE SWITCHER 3.5 V to 60 V 2 A Synchronous Step-Down Voltage

Converter

1 Features

3 Description

The LM46002-Q1 SIMPLE SWITCHER^®regulator is

an easy to use synchronous step-down DC-DC

converter capable of driving up to 2 A of load current

from an input voltage ranging from 3.5 V to 60 V. The

LM46002-Q1 provides exceptional efficiency, output

accuracy and drop-out voltage in a very small

solution size. An extended family is available in

various load current options and 36 V maximum input

voltage in pin-to-pin compatible packages, including

LM46001, LM46000, LM43603, LM43602, LM43601

and LM43600. Peak current mode control is

•

AEC-Q100 Qualified (–40°C to +125°C Operating

Junction Temperature)

•

27 µA Quiescent Current in Regulation

High Efficiency at Light Load (DCM and PFM)

Tested to EN55022/CISPR 22 EMI standards

Integrated Synchronous Rectification

Adjustable Frequency Range: 200 kHz to 2.2 MHz

(500 kHz default)

•

Frequency Synchronization to External Clock

Internal Compensation

employed

achieve

simple

control

loop

compensation and cycle-by-cycle current limiting.

Optional features such as programmable switching

Stable with Almost Any Combination of Ceramic,

Polymer, Tantalum, and Aluminum Capacitors

frequency,

synchronization,

power-good

flag,

precision enable, internal soft-start, extendable soft-

start, and tracking provide a flexible and easy to use

•

Power-Good Flag

Soft-Start into Pre-Biased Load

platform for

wide range of applications.

Internal Soft-Start: 4.1 ms

Discontinuous conduction and automatic frequency

reduction at light loads improve light load efficiency.

The family requires few external components. Pin

arrangement allows simple, optimum PCB layout.

Protection features include thermal shutdown, V_CC

under-voltage lockout, cycle-by-cycle current limit,

and output short circuit protection. The LM46002-Q1

device is available in the HTSSOP / PWP 16 leaded

package (5.1 mm x 6.6 mm x 1.2 mm) with 0.65 mm

lead pitch.

Extendable Soft-Start Time by External Capacitor

Output Voltage Tracking Capability

Precision Enable to Program System UVLO

Output Short Circuit Protection with Hiccup Mode

Over Temperature Thermal Shutdown Protection

2 Applications

•

Sub-AM Band 12 V and 24 V Automotive

Industrial Power Supplies

Device Information⁽¹⁾

PART NUMBER

PACKAGE

BODY SIZE (NOM)

Telecommunications Systems

LM46002-Q1

HTSSOP (16)

5.1 mm x 6.6 mm

Commercial Vehicle Power Supplies

General Purpose Wide V_INRegulation

High Efficiency Point-Of-Load Regulation

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

the end of the datasheet.

4 Simplified Schematic

Radiated Emission Graph

V_IN= 24 V, V_OUT= 3.3 V, F_S= 500 kHz, I_OUT= 2 A

V_OUT

V_IN

Evaluation Board

VIN

EN 55022 Class B Limit

EN 55022 Class A Limit

C_OUT

C_IN

LM46002-Q1

C_BOOT

CBOOT

BIAS

ENABLE

PGOOD

C_BIAS

C_FF

R_FBT

SS/TRK

VCC

SYNC

AGND

R_FBB

C_VCC

PGND

200

400

600

800

1000

Frequency (MHz)

C001

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...52

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与LM46002AQPWPTQ1相关器件

型号	品牌	获取价格	描述	数据表
LM46002EVM	TAOS	获取价格	evaluation module (EVM) helps designers evaluate the operation
LM46002PWP	TI	获取价格	SIMPLE SWITCHER 3.5 V to 60 V 2 A Synchronous Step-Down Voltage Converter
LM46002PWPEVM	TAOS	获取价格	evaluation module (EVM) helps designers evaluate the operation
LM46002PWPR	TI	获取价格	SIMPLE SWITCHER 3.5 V to 60 V 2 A Synchronous Step-Down Voltage Converter
LM46002PWPT	TI	获取价格	SIMPLE SWITCHER 3.5 V to 60 V 2 A Synchronous Step-Down Voltage Converter
LM46002-Q1	TI	获取价格	SIMPLE SWITCHER 3.5 V to 60 V 2 A Synchronous Step-Down Voltage Converter
LM46002-Q1_15	TI	获取价格	SIMPLE SWITCHER 3.5 V to 60 V 2 A Synchronous Step-Down Voltage Converter
LM46002QPWPRQ1	TI	获取价格	SIMPLE SWITCHER 3.5 V to 60 V 2 A Synchronous Step-Down Voltage Converter
LM46002QPWPTQ1	TI	获取价格	SIMPLE SWITCHER 3.5 V to 60 V 2 A Synchronous Step-Down Voltage Converter
LM46058ABRG	LIGHTKEY	获取价格	4.60 inch 5x8 Dual Color Dot Matrix LED Display

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