LP38851

更新时间： 2024-01-27 14:59:02

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	440K
描述
800 mA Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-Start

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LP38851 技术参数

是否Rohs认证：	不符合	生命周期：	Transferred
包装说明：	TO-220, 7 PIN	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.18	可调性：	ADJUSTABLE
最大回动电压 1：	0.2 V	标称回动电压 1：	0.115 V
JESD-30 代码：	R-XSFM-T7	JESD-609代码：	e0
湿度敏感等级：	1	功能数量：	1
输出次数：	1	端子数量：	7
工作温度TJ-Max：	125 °C	工作温度TJ-Min：	-40 °C
最大输出电流 1：	0.8 A	最大输出电压 1：	1.8 V
最小输出电压 1：	0.8 V	封装主体材料：	UNSPECIFIED
封装等效代码：	SMSIP7H,.55,50TB	封装形状：	RECTANGULAR
封装形式：	FLANGE MOUNT	包装方法：	RAIL
认证状态：	Not Qualified	调节器类型：	ADJUSTABLE POSITIVE SINGLE OUTPUT LDO REGULATOR
子类别：	Other Regulators	表面贴装：	NO
技术：	CMOS	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	THROUGH-HOLE	端子节距：	1.27 mm
端子位置：	SINGLE	Base Number Matches：	1

LP38851 数据手册

June 2007

LP38851

800 mA Fast-Response High-Accuracy Adjustable LDO

Linear Regulator with Enable and Soft-Start

General Description

Features

The LP38851-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 115 mV (typical) at 800 mA 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

■

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 PSOP 8–pin, TO-220 7–pin, and TO-263 7-pin pack-

ages.

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

■

Applications

ASIC Power Supplies in:

- Desktops, Notebooks, and Graphics Cards, Servers

- Gaming Set Top Boxes, Printers and Copiers

■

Dropout Voltage: 115 mV (typical) at 800 mA load current.

Low Ground Pin Current: 10 mA (typical) at 800 mA load

current.

Server Core and I/O Supplies

■

Soft-Start: Programmable Soft-Start time.

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

30002501

300025

www.national.com

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与LP38851相关器件

型号	品牌	获取价格	描述	数据表
LP38851MR-ADJ	NSC	获取价格	800 mA Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-St
LP38851MR-ADJ	TI	获取价格	LP38851 800 mA Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and
LP38851MR-ADJ/NOPB	TI	获取价格	LP38851 800 mA Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and
LP38851MRX-ADJ	TI	获取价格	LP38851 800 mA Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and
LP38851MRX-ADJ	NSC	获取价格	800 mA Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-St
LP38851MRX-ADJ/NOPB	TI	获取价格	LP38851 800 mA Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and
LP38851S-ADJ	TI	获取价格	LP38851 800 mA Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and
LP38851S-ADJ	NSC	获取价格	800 mA Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and Soft-St
LP38851S-ADJ/NOPB	TI	获取价格	LP38851 800 mA Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and
LP38851SX-ADJ	TI	获取价格	LP38851 800 mA Fast-Response High-Accuracy Adjustable LDO Linear Regulator with Enable and

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