參數(shù)資料
型號(hào)： 01F2160
英文描述： IC-VOLTAGE REG +3V
中文描述： 集成電路3V的電壓退訂
文件頁(yè)數(shù)： 1/16頁(yè)
文件大?。?/td> 342K
代理商： 01F2160
Semiconductor Components Industries, LLC, 1999
October, 1999 – Rev. 5
1
Publication Order Number:
LP2950/D
LP2950
Micropower Voltage
Regulators
The LP2950 and LP2951 are micropower voltage regulators that are
specifically designed to maintain proper regulation with an extremely
low input–to–output voltage differential. These devices feature a very
low quiescent bias current of 75
A and are capable of supplying
output currents in excess of 100 mA. Internal current and thermal
limiting protection is provided.
The LP2951 has three additional features. The first is the Error
Output that can be used to signal external circuitry of an out of
regulation condition, or as a microprocessor power–on reset. The
second feature allows the output voltage to be preset to 5.0 V, 3.3 V or
3.0 V output (depending on the version) or programmed from 1.25 V
to 29 V. It consists of a pinned out resistor divider along with direct
access to the Error Amplifier feedback input. The third feature is a
Shutdown input that allows a logic level signal to turn–off or turn–on
the regulator output.
Due to the low input–to–output voltage differential and bias current
specifications, these devices are ideally suited for battery powered
computer, consumer, and industrial equipment where an extension of
useful battery life is desirable. The LP2950 is available in the three
pin case 29 and DPAK packages, and the LP2951 is available in the
eight pin dual–in–line, SO–8 and Micro–8 surface mount packages.
The ‘A’ suffix devices feature an initial output voltage tolerance
±0.5%.
LP2950 and LP2951 Features:
Low Quiescent Bias Current of 75 A
Low Input–to–Output Voltage Differential of 50 mV at 100 A and
380 mV at 100 mA
5.0 V, 3.3 V or 3.0 V ±0.5% Allows Use as a Regulator or Reference
Extremely Tight Line and Load Regulation
Requires Only a 1.0 F Output Capacitor for Stability
Internal Current and Thermal Limiting
LP2951 Additional Features:
Error Output Signals an Out of Regulation Condition
Output Programmable from 1.25 V to 29 V
Logic Level Shutdown Input
(See Following Page for Device Information.)
TO–92
Z SUFFIX
CASE 29
http://onsemi.com
See detailed ordering and shipping information in the package
dimensions section on page 13 of this data sheet.
ORDERING INFORMATION
PIN CONNECTIONS
2
3
1
Pin: 1. Output
2. Ground
3. Input
DPAK
DT SUFFIX
CASE 369A
3
1
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
12
3
(Top View)
Pin: 1. Input
2. Ground
3. Output
8
1
8
1
8
1
PIN CONNECTIONS
18
7
6
5
2
3
4
(Top View)
Output
Sense
Shutdown
Input
Feedback
Error Output
VO Tap
Gnd
SO–8
D SUFFIX
CASE 751
N SUFFIX
CASE 626
Micro–8
DM SUFFIX
CASE 846A
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