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參數(shù)資料
| 型號(hào)： | B4252 |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 250mA Low Dropout Voltage Regulators ON/OFF & BYPASS |
| 中文描述： | 250mA的低壓差穩(wěn)壓器開(kāi)/關(guān) |
| 文件頁(yè)數(shù)： | 1/5頁(yè) |
| 文件大?。?/td> | 169K |
| 代理商： | B4252 |
Bay Linear, Inc
2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com
250mA Low Dropout Voltage Regulators
B4252
ON/OFF & BYPASS
Pin Connection
N.C.
Ordering Information
Package
Part No.
SOT-25
B4252CK5-X.X
X.X = Fixed Output Voltages from 2.0V to 6.0V
ON/OFF (Enable) Function
Part No
ON/Off
High
Low
V
OUT
ON
OFF
B4252
Description
The B4252 series are a group of positive output voltage,
five-pin regulators, which provide a high current even
when the input/output voltage differential is small. Low
power consumption and high accuracy is achieved
though CMOS and programmable fuse technologies.
Output voltage: 2.0V to 6.0V in 0.1V increments.
The B4252 consists of a high-precision voltage
reference, an error correction circuit, and a current
limited output driver. Key features include a Shutdown
Pin that reduces supply current to 0.5
μ
A max and a
470pF Bypass input to ground reduces noise present on
the internal reference, which in turn significantly reduce
output noise. If output noise is not concern, this input
maybe left unconnected. Larger capacitor values cap be
used, but results in longer time period to rated output
voltage when power initially applied.
The ON/OFF pin enables the output to be turned off,
resulting in reduced power consumption. Provided in
SOT-25 (150mW) packages minimizes the usage of
board real state.
Features
Maximum Output Current: 250 mA.
Highly Accurate Output Voltage +/- 1.4%
Only 19
μ
A Power Consumption MAX
Shutdown Supply Current 1
μ
A
Ground Current of Less than 5
μ
A
Very Low Dropout
0.12V at 100mA
0.23V at 250mA
Shutdown Mode for Power Savings
With ON/OFF & BYPASS Features
Offered in SOT-25 Packages
PIN-to-PIN RICOH R1121N-E
Applications
Battery Powered Equipment
Notebook PC, Palmtops, PDA
Portable Cameras and Video Recorders
Reference Voltage Sources
Cellular / GSM / PCS Phones
Bay Linear
Inspire the Linear Power
SOT-25 (K5)
Top View
Vin
V
OUT
GND
3
2
1
4
5
ON/OFF
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