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LD1117ASTR Datasheet

  • LD1117ASTR

  • STMicroelectronics [LOW DROP FIXED AND ADJUSTABLE POSITIVE ...

  • STMICROELECTRONICS   STMICROELECTRONICS

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LD1117A series
Low drop fixed and adjustable positive voltage regulators
Features
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Low dropout voltage
(1.15V typ. @ I
OUT
= 1A, 25擄C)
Very low quiescent current
(5 mA typ. @ 25擄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 (V
rel
= 1.25V)
Internal current and thermal limit
Only 10 碌F for stability
Available in 鹵 2% (at 25擄C) and 4% in full
temperature range
High supply voltage rejection:
鈥?80dB typ. at 25擄C)
Temperature range: 0擄C to 125擄C
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, D
2
PAK/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 10碌F
minimum capacitor is needed for stability. Only
chip trimming allows the regulator to reach a very
tight output voltage tolerance, within 鹵 2% at
25擄C.
DPAK
D
2
PAK/A
SOT-223
TO-220
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).
Block diagram
January 2007
Rev. 17
1/27
www.st.com
27

LD1117ASTR 產(chǎn)品屬性

  • LD1117AXX View All Specifications

  • 1

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - 線性

  • -

  • 正，可調(diào)式

  • 1.25 V ~ 15 V

  • 最高 15V

  • 1.15V @ 1A

  • 1

  • 1.2A

  • 0°C ~ 125°C

  • 表面貼裝

  • TO-261-4，TO-261AA

  • SOT-223

  • Digi-Reel®

  • 497-1229-6

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