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LP3987-1.8B5C 参数 Datasheet PDF下载

LP3987-1.8B5C图片预览
型号: LP3987-1.8B5C
PDF下载: 下载PDF文件 查看货源
内容描述: 300毫安,超低噪声超高速CMOS LDO Regrlator [300mA,Ultra-LowNoise Ultra-fast CMOS LDO Regrlator]
分类和应用:
文件页数/大小: 8 页 / 287 K
品牌: POWER [ LOWPOWER SEMICONDUCTOR INC ]
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LP3987
300mA,Ultra-LowNoise
Ultra-fast CMOS LDO Regrlator
General Description
The LP3987 is designed for portable RF and
wireless applications with demanding performance
and space requirements. The LP3987 performance
is optimized for battery-powered systems to deliver
ultra low noise and low quiescent current. A noise
bypass pin is available for further reduction of
output noise. Regulator ground current increases
only slightly in dropout, further prolonging the
battery life. The LP3987 also works with low-ESR
ceramic capacitors, reducing the amount of board
space necessary for power applications, critical in
hand-held
wireless devices. The LP3987 consumes
less than 0.01µA in shutdown mode and has fast
turn-on time less than 50µs. The other features
include ultra low dropout voltage, high output
accuracy, current limiting protection, and high
ripple rejection ratio. Available in the 5-lead of
SOT-23 packages.
Features
Ultra-Low-Noise for RF Application
2.5V- 6V Input Voltage Range
Low Dropout : 220mV @ 300mA
High PSSR:-80dB at 1KHz
< 0.01 A Standby Current When
Shutdown
TTL-Logic-Controlled Shutdown Input
Custom Voltage Available
Ultra-Fast Response in Line/Load
Transient
Quick Start-Up (Typically 50 s)
Current Limiting and Thermal Shutdown
Protection
Applications
PMP/PDA/MP3 players
Cellular and Mobile phone
RF Module
Sensor Module
Pin Configurations
Ordering Information
LP3987 -
□□
□□
F:PB-Free
Package Type
B5: SOT-23-5
B3: SOT-23
Output Voltage:
SOT23-5(B5) Type:
Type
A B
Voltage(V) 1.5 1.8
SOT23 (B3) Type:
Type
A B
Voltage(V) 1.5 1.8
C D E H
F
G
2.5 2.7 2.8 2.85 3.0 3.3
C D E H
2.0 2.1 2.5 2.8
F
G
3.0 3.3
SOT-23-5
SOT-23
Typical Application Circuit
Note:
1.
Output Voltage range from 1.5V to 3.3V;
2.
2.85V output order is LP3987-HB5F.
LP3987-datasheet
Oct.-2003
1-1