LD1117AL datasheet(1/27 Pages) STMICROELECTRONICS

部件名	LD1117AL

功能描述	LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS

PDF	27 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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1 / 27 page

January 2007

Rev. 17

1/27

27

LD1117A series

Low drop fixed and adjustable positive voltage regulators

Features

■ Low dropout voltage

(1.15V typ. @ IOUT = 1A, 25°C)

■ Very low quiescent current

(5 mA typ. @ 25°C)

■ Output current up to 1A

■ Fixed output voltage of: 1.2V, 1.8V, 2.5V,

2.85V, 3.3V, 5.0V

■ Adjustable version availability (Vrel = 1.25V)

■ Internal current and thermal limit

■ Only 10 µF for stability

■ Available in ± 2% (at 25°C) and 4% in full

temperature range

■ High supply voltage rejection:

– 80dB typ. at 25°C)

■ Temperature range: 0°C to 125°C

Description

The LD1117A is a LOW DROP Voltage Regulator

able to provide up to 1A of Output Current,

available even in adjustable version (Vref=1.25V).

Concerning fixed versions, are offered the

following Output Voltages: 1.2V, 1.8V, 2.5V, 2.85V,

3.3V and 5.0V. The 2.85V type is ideal for SCSI-2

lines active termination. The device is supplied in:

SOT-223, DPAK, D2PAK/A and TO-220. Surface

mount packages optimize the thermal

characteristics even offering a relevant space

saving effect. High efficiency is assured by NPN

pass transistor. Only a very common 10µF

minimum capacitor is needed for stability. Only

chip trimming allows the regulator to reach a very

tight output voltage tolerance, within ± 2% at

25°C.

SOT-223

D2PAK/A

TO-220

DPAK

www.st.com

Block diagram

类似零件编号 - LD1117AL

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Unisonic Technologies	LD1117AL	344Kb / 12P	LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
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