Datasheet > LP3991TLX-1.7

LP3991TLX-1.7

更新时间： 2024-09-09 20:44:15

品牌	Logo	应用领域
美国国家半导体 - NSC		输出元件调节器
页数	文件大小	规格书
12页	269K
描述
IC VREG FIXED POSITIVE LDO REGULATOR, PBGA4, 0.963 X 1.446 MM, LEAD FREE, MICRO SMD-4, Fixed Positive Single Output LDO Regulator

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LP3991TLX-1.7 技术参数

生命周期：	Transferred	包装说明：	,
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.55
JESD-30 代码：	R-PBGA-B4	端子数量：	4
封装主体材料：	PLASTIC/EPOXY	封装形状：	RECTANGULAR
封装形式：	GRID ARRAY	认证状态：	Not Qualified
调节器类型：	FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR	表面贴装：	YES
端子形式：	BALL	端子位置：	BOTTOM
Base Number Matches：	1

LP3991TLX-1.7 数据手册

September 5, 2008

LP3991

300mA Linear Voltage Regulator for Digital Applications

General Description

Features

Operating from a minimum input voltage of 1.65V, the LP3991

regulator has been designed to provide fixed stable output

voltages for load currents up to 300mA. This device is suitable

where accurate, low voltages are required from low input volt-

age sources and is therefore suitable for post regulation of

switched mode regulators. In such applications, significant

improvements in performance and EMI can be realized, with

little reduction in overall efficiency. The LP3991 will provide

fixed outputs as low as 1.2V from a wide input range of 1.65V

to 4.0V Using the enable pin, the device may be controlled to

provide a shutdown state, in which negligible supply current

is drawn.

Operation from 1.65V to 4.0V Input

■

1% accuracy at room temperature

Output Voltage from 1.2V to 2.8V

125mV Dropout at 300mA load

50µA Quiescent Current at 1mA Load

Inrush Current controlled to 600mA

PSRR 65dB at 1kHz

100µs Start-Up time for 1.5V V_OUT

Stable with Ceramic Capacitors as small as 0402

■

Thermal-Overload and Short-Circuit Protection

The LP3991 is designed to be stable with space saving ce-

ramic capacitors as small as 0402 case size.

Package

4 pin micro SMD (0.963mm x 1.446mm)

Performance is specified for a -40°C to 125°C junction tem-

perature range.

For other package options contact your NSC sales office.

For output voltage options please contact your local NSC

sales office.

Applications

Post DC/DC Regulator

■

Battery Operated Devices

Hand-Held Information Appliances

■

Typical Application Circuit

20110002

201100

www.national.com

12 3 4 5 6 7...12

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与LP3991TLX-1.7相关器件

型号	品牌	获取价格	描述	数据表
LP3991TLX-1.7/NOPB	TI	获取价格	300-mA LDO for Digital Applications 4-DSBGA
LP3991TLX-1.8	NSC	获取价格	300mA Linear Voltage Regulator for Digital Applications
LP3991TLX-1.8/NOPB	TI	获取价格	具有使能功能的 300mA、低压降稳压器 \| YZR \| 4
LP3991TLX-2.0	NSC	获取价格	300mA Linear Voltage Regulator for Digital Applications
LP3991TLX-2.0/NOPB	TI	获取价格	300-mA LDO for Digital Applications 4-DSBGA
LP3991TLX-2.5	NSC	获取价格	300mA Linear Voltage Regulator for Digital Applications
LP3991TLX-2.5/NOPB	TI	获取价格	具有使能功能的 300mA、低压降稳压器 \| YZR \| 4
LP3991TLX-2.8	NSC	获取价格	300mA Linear Voltage Regulator for Digital Applications
LP3991TLX-2.8/NOPB	NSC	获取价格	IC VREG FIXED POSITIVE LDO REGULATOR, PBGA4, 0.963 X 1.446 MM, LEAD FREE, MICRO SMD-4, Fix
LP3991TLX-2.8/NOPB	TI	获取价格	具有使能功能的 300mA、低压降稳压器 \| YZR \| 4 \| -40 to 125

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