Datasheet > LP5952

LP5952

更新时间： 2024-09-15 11:11:59

品牌	Logo	应用领域
德州仪器 - TI		稳压器
页数	文件大小	规格书
26页	795K
描述
具有使能功能的 350mA、低输入电压 (0.9V)、线性稳压器

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LP5952

SNVS469F –OCTOBER 2006–REVISED DECEMBER 2015

LP5952 350-mA Dual-Rail Linear Regulator

1 Features

3 Description

The LP5952 is a dual-supply-rail linear regulator

optimized for powering ultralow-voltage circuits from a

single Li-Ion cell or 3-cell NiMH/NiCd battery.

•

Input Voltage Range: 0.7 V to 4.5 V

2.5 V ≤ V_BATT≤ 5.5 V

0.5V ≤ V_OUT≤ 2 V

In the typical post-regulation application V_BATTis

directly connected to the battery (range 2.5 V to

5.5 V), and V_INis supplied by the output voltage of

the DC-DC converter (range 0.7 V to 4.5 V).

Ensured 350-mA Output Current

For I_LOAD= 350 mA:

–

_BATT≥ V_OUT(NOM)+ 1.5 V or 2.5 V

(Whichever is Higher)

For I_LOAD= 150 mA:

_BATT≥ V_OUT(NOM)+ 1.3 V or 2.5 V

(Whichever is Higher)

The device offers superior dropout and transient

features combined with very low quiescent currents.

In shutdown mode (Enable (EN) pin pulled low) the

device turns off and reduces battery consumption to

0.1 µA (typical). The LP5952 also features internal

protection against overtemperature, overcurrent, and

undervoltage conditions.

•

–

Excellent Load Transient Response: ±15 mV

Typical

•

Excellent Line Transient Response: ±1 mV Typical

50-µA Typical Quiescent Current from V_BATT

10-µA Typical Quiescent Current from V_IN

0.1-µA Typical Quiescent Current in Shutdown

Noise voltage = 100 µV_RMSTypical

Depending upon application, only one or two tiny

surface-mount external components are required;

performance is specified for a –40°C to +125°C

junction temperature range. The device is available in

fixed output voltages from 0.5 V to 2 V. For

availability, please contact your local Texas

Instruments sales office.

Operates from a Single Li-Ion Cell or 3-Cell

NiMH/NiCd Battery

Device Information⁽¹⁾

•

Thermal-Overload and Short-Circuit Protection

PART NUMBER

PACKAGE

DSBGA (5)

USON (6)

BODY SIZE (NOM)

1.326 mm × 0.96 mm

2.00 mm × 2.00 mm

2 Applications

LP5952

•

Mobile Phones

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

the end of the data sheet.

Hand-Held Radios

Personal Digital Assistants

Palm-Top PCs

Portable Instruments

Battery-Powered Devices

Typical Application Circuit

V_BATT: 2.7 V to 5.5 V

OUT

BATT

For example, 1.2 V

2.2 mF

Li-Ion

3-cell

LP5952

For example,

1.5 V

Load

0 to 350 mA

IN A1

Pre-

NiMh/NiCd

regulator

1 mF

GND

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...26

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与LP5952相关器件

型号	品牌	获取价格	描述	数据表
LP5952_08	NSC	获取价格	350mA Dual Rail Linear Regulator
LP5952LC-1.2	NSC	获取价格	IC VREG 1.2 V FIXED POSITIVE REGULATOR, DSO6, 0.50 MM PITCH, LEAD FREE, LLP-6, Fixed Posit
LP5952LC-1.2/NOPB	TI	获取价格	具有使能功能的 350mA、低输入电压 (0.9V)、线性稳压器 \| NKH \| 6 \|
LP5952LC-1.3/NOPB	TI	获取价格	具有使能功能的 350mA、低输入电压 (0.9V)、线性稳压器 \| NKH \| 6 \|
LP5952LC-1.5/NOPB	TI	获取价格	具有使能功能的 350mA、低输入电压 (0.9V)、线性稳压器 \| NKH \| 6 \|
LP5952LC-1.8/NOPB	TI	获取价格	具有使能功能的 350mA、低输入电压 (0.9V)、线性稳压器 \| NKH \| 6 \|
LP5952TL-0.7	NSC	获取价格	350mA Dual Rail Linear Regulator
LP5952TL-1.0/NOPB	NSC	获取价格	IC VREG 1 V FIXED POSITIVE REGULATOR, PBGA5, LEAD FREE, SMD, 5 PIN, Fixed Positive Single
LP5952TL-1.0/NOPB	TI	获取价格	具有使能功能的 350mA、低输入电压 (0.9V)、线性稳压器 \| YZR \| 5 \|
LP5952TL-1.2	NSC	获取价格	350mA Dual Rail Linear Regulator

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