LP38853

更新时间： 2024-11-14 12:02:15

品牌	Logo	应用领域
德州仪器 - TI		稳压器软启动
页数	文件大小	规格书
28页	1685K
描述
LP38853 3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start

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LP38853 数据手册

LP38853

www.ti.com

SNVS335D –DECEMBER 2006–REVISED APRIL 2013

LP38853 3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable

and Soft-Start

Check for Samples: LP38853

FEATURES

DESCRIPTION

The LP38853-ADJ is a high current, fast response

regulator which can maintain output voltage

regulation with extremely low input to output voltage

drop. Fabricated on a CMOS process, the device

operates from two input voltages: V_BIASprovides

voltage to drive the gate of the N-MOS power

transistor, while V_INis the input voltage which

supplies power to the load. The use of an external

bias rail allows the part to operate from ultra low V_IN

voltages. Unlike bipolar regulators, the CMOS

architecture consumes extremely low quiescent

current at any output load current. The use of an N-

MOS power transistor results in wide bandwidth, yet

minimum external capacitance is required to maintain

loop stability.

•

Adjustable V_OUTRange of 0.80V to 1.8V

•

Wide V_BIASSupply Operating Range of 3.0V to

5.5V

•

Stable with 10µF Ceramic Capacitors

Dropout Voltage of 240 mV (typical) at 3A Load

Current

•

Precision V_ADJAcross All Line and Load

Conditions:

–

±1.5% V_ADJfor T_J= 25°C

±2.0% V_ADJfor 0°C ≤ T_J≤ +125°C

±3.0% V_ADJfor -40°C ≤ T_J≤ +125°C

•

Over-Temperature and Over-Current

Protection

The fast transient response of this device makes it

suitable for use in powering DSP, Microcontroller

Core voltages and Switch Mode Power Supply post

regulators. The part is available in SO PowerPAD

8–pin, PFM 7–pin, and DDPAK 7-pin packages.

Available in 8 Lead SO PowerPAD, 7 Lead PFM

and 7 Lead DDPAK Packages

−40°C to +125°C Operating Junction

Temperature Range

Dropout Voltage: 240 mV (typical) at 3A load

current.

APPLICATIONS

•

ASIC Power Supplies in:

Low Ground Pin Current: 10 mA (typical) at 3A load

current.

–

Desktops, Notebooks, and Graphics Cards,

Servers

Soft-Start: Programmable Soft-Start time.

–

Gaming Set Top Boxes, Printers and

Copiers

Precision ADJ Voltage: ±1.5% for T_J= 25°C, and

±2.0% for 0°C ≤ T_J≤ +125°C, across all line and load

conditions

•

Server Core and I/O Supplies

DSP and FPGA Power Supplies

SMPS Post-Regulator

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...28

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LP38853 替代型号

型号	品牌	替代类型	描述	数据表
LP38693-ADJ-Q1	TI	功能相似	具有使能功能的汽车类 500mA、10V、可调节低压降稳压器
LP38691-ADJ-Q1	TI	功能相似	汽车类 500mA、10V、可调节低压降稳压器
LP38851	TI	功能相似	LP38851 800 mA Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and

与LP38853相关器件

型号	品牌	获取价格	描述	数据表
LP38853_14	TI	获取价格	3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start
LP38853_15	TI	获取价格	3-A Fast-Response High-Accuracy Adjustable LDO Linear Regulator
LP38853MR-ADJ	NSC	获取价格	3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start
LP38853MR-ADJ	TI	获取价格	LP38853 3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Sof
LP38853MR-ADJ/NOPB	TI	获取价格	LP38853 3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Sof
LP38853MRX-ADJ	TI	获取价格	LP38853 3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Sof
LP38853MRX-ADJ	NSC	获取价格	3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start
LP38853MRX-ADJ/NOPB	TI	获取价格	LP38853 3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Sof
LP38853S-ADJ	TI	获取价格	LP38853 3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Sof
LP38853S-ADJ	NSC	获取价格	3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start

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