LM26484

更新时间： 2024-11-23 11:48:03

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
18页	1839K
描述
Power Management Unit

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LM26484 数据手册

September 23, 2009

LM26484

Power Management Unit

General Description

The LM26484 is a multi-function, configurable Power Man-

agement Unit. This device integrates two highly efficient 2.0A

Step-Down DC/DC converters, one LDO Controller, a POR

(Power On Reset) circuit, and thermal overload protection

circuitry. All regulator output voltages are externally ad-

justable. The LDO controller is a low-voltage NMOS voltage

regulator. The LM26484 is offered in a 5 x 4 x 0.8 mm LLP-24

pin package.

LINEAR REGULATOR (LDO) CONTROLLER

3.0V–5.5V Input range

■

Externally adjustable V_OUT

±1.5% feedback voltage accuracy

Regulated to Low V_IN- Low V_OUTLI-LO (Low Input Low

Output) NFET operation

Input to the LI-LO configuration, can be post regulated

when supply is regulated by Buck2

Up to 1000 mA output current by selection of external FET

■

Key Specifications

Applications

Digital Cores and I/Os (FPGAs, ASICs, DSPs)

■

STEP-DOWN DC/DC CONVERTER (BUCK)

Automotive infotainment

3.0–5.5V Input Range

■

Set-top-box

Externally adjustable V_OUT

Cordless phone base station

Buck1 : 0.8V–3.5V @ 2A

Buck2 : 0.8V–3.5V @ 2A

—

Networking router

■

180° Phase Shift between Bucks Clocks

2 MHz PWM switching frequency

±1% feedback voltage accuracy

Automatic soft start

Printers

■

Current overload protection

PWM/PFM efficiency modes available

300661

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与LM26484相关器件

型号	品牌	获取价格	描述	数据表
LM26484SQ	NSC	获取价格	Power Management Unit
LM26484SQ/NOPB	NSC	获取价格	IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC24, 5 X 4 MM, 0.80 MM HEIGHT, LLP-24, Power Mana
LM26484SQ/NOPB	TI	获取价格	两个直流/直流转换器和一个 LDO 可配置 PMIC \| NHZ \| 24 \| -40 t
LM26484SQE	NSC	获取价格	Power Management Unit
LM26484SQE/NOPB	TI	获取价格	两个直流/直流转换器和一个 LDO 可配置 PMIC \| NHZ \| 24 \| -40 t
LM26484SQE/NOPB	NSC	获取价格	IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC24, 5 X 4 MM, 0.80 MM HEIGHT, LLP-24, Power Mana
LM26484SQX	NSC	获取价格	Power Management Unit
LM26484SQX/NOPB	TI	获取价格	两个直流/直流转换器和一个 LDO 可配置 PMIC \| NHZ \| 24 \| -40 t
LM2648MTD	NSC	获取价格	Two-Phase, Synchronous Step-Down 3-Channel Switching Regulator Controller
LM2650	NSC	获取价格	Synchronous Step-Down DC/DC Converter