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LP38852T-ADJ

更新时间： 2024-11-14 04:44:07

品牌	Logo	应用领域
美国国家半导体 - NSC		稳压器软启动
页数	文件大小	规格书
18页	438K
描述
1.5A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start

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LP38852T-ADJ 数据手册

January 2007

LP38852

1.5A Fast-Response High-Accuracy Adjustable LDO Linear

Regulator with Enable and Soft-Start

General Description

Features

The LP38852-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 pro-

cess, the device operates from two input voltages: V_BIAS

provides voltage to drive the gate of the N-MOS power tran-

sistor, 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_INvoltages. 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 ex-

ternal 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 130 mV (typical) at 1.5A load current

Precision Output Voltage across 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

■

Available in 8 lead PSOP, 7 lead TO-220 and 7 lead

TO-263 packages

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 avail-

able in the TO-220 and TO-263 7-pin packages.

−40°C to +125°C Operating Junction Temperature Range

■

Applications

Dropout Voltage: 130 mV (typical) at 1.5A load current.

Low Ground Pin Current: 14 mA (typical) at 1.5A load cur-

rent.

ASIC Power Supplies In:

■

- Desktops, Notebooks, and Graphics Cards, Servers

- Gaming Set Top Boxes, Printers and Copiers

Soft-Start: Programmable Soft-Start time.

Server Core and I/O Supplies

■

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

DSP and FPGA Power Supplies

SMPS Post-Regulator

Typical Application Circuit

20213901

202139

www.national.com

12 3 4 5 6 7...18

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与LP38852T-ADJ相关器件

型号	品牌	获取价格	描述	数据表
LP38852T-ADJ/NOPB	TI	获取价格	具有使能功能的 1.5A、低输入电压 (0.93V)、可调节超低压降稳压器 \| NDZ \|
LP38853	TI	获取价格	LP38853 3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Sof
LP38853	NSC	获取价格	3A Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start
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

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