LD1117ADT28TR STMICROELECTRONICS [STMicroelectronics], LD1117ADT28TR Datasheet

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LD1117ADT28TR

Manufacturer Part Number
LD1117ADT28TR
Description
LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
Features
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).
January 2007
Block diagram
Low dropout voltage
(1.15V typ. @ I
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 (V
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
Low drop fixed and adjustable positive voltage regulators
OUT
= 1A, 25°C)
rel
= 1.25V)
Rev. 17
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
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.
TO-220
DPAK
LD1117A series
2
PAK/A and TO-220. Surface
SOT-223
D
2
PAK/A
www.st.com
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LD1117ADT28TR Summary of contents

Page 1

Low drop fixed and adjustable positive voltage regulators Features ■ Low dropout voltage (1.15V typ 1A, 25°C) OUT ■ Very low quiescent current (5 mA typ. @ 25°C) ■ Output current ■ Fixed output ...

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Contents 1 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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LD1117A series 1 Pin configuration Figure 1. Pin connections (top view) SOT-223 TO-220 Note: The TAB is connected to the OUT Pin configuration DPAK 2 PAK/A 3/27 ...

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Maximum ratings 2 Maximum ratings Table 1. Absolute maximum ratings Symbol V DC Input Voltage IN P Power Dissipation TOT T Storage Temperature Range STG T Operating Junction Temperature Range OP Note: Absolute Maximum Ratings are those values beyond which ...

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LD1117A series 3 Schematic application Figure 2. Application circuit (for other fixed output voltages) Schematic application 5/27 ...

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Electrical characteristics 4 Electrical characteristics Table 3. Electrical characteristics of LD1117A#12 (refer to the test circuits, T GND, unless otherwise specified). Symbol Parameter V Output voltage O V Output voltage O ∆V Line regulation O ∆V Load regulation O ∆V ...

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LD1117A series Table 4. Electrical characteristics of LD1117A#18 (refer to the test circuits, T Symbol Parameter V Output voltage O V Output voltage O ∆V Line regulation O ∆V Load regulation O ∆V Temperature stability O ∆V Long term stability ...

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Electrical characteristics Table 6. Electrical characteristics of LD1117A#28 (refer to the test circuits, T Symbol Parameter V Output voltage O V Output voltage O ∆V Line regulation O ∆V Load regulation O ∆V Temperature stability O ∆V Long term stability ...

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LD1117A series Table 8. Electrical characteristics of LD1117#50 (refer to the test circuits, T Symbol Parameter V Output voltage O V Output voltage O ∆V Line regulation O ∆V Load regulation O ∆V Temperature stability O ∆V Long term stability ...

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Typical application 5 Typical application Figure 3. Negative supply Figure 4. Active terminator for SCSI-2 BUS Figure 5. Circuit for increasing output voltage 10/27 LD1117A series ...

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LD1117A series Figure 6. Voltage Regulator With Reference Figure 7. Battery backed-up regulated supply Typical application 11/27 ...

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Typical application Figure 8. Post-regulated dual supply 12/27 LD1117A series ...

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LD1117A series 6 LD1117A Adjustable: Application note The LD1117 Adjustable has a thermal stabilized 1.25±0.012V reference voltage between the OUT and ADJ pins normally fixed to 120Ω . From OUT REF ...

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Package mechanical data 7 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a Lead-free second level interconnect. The category of second Level Interconnect is marked on the package and ...

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LD1117A series DIM. MIN 0.02 B 0.6 B1 2.9 c 0. 3.3 H 6.7 V SOT-223 MECHANICAL DATA mm. TYP MAX. 1.8 0.1 0.7 0.85 3 3.15 0.26 0.35 6.5 6.7 2.3 4.6 ...

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Package mechanical data DIM. MIN. A 4.40 C 1. 0.49 F 0.61 F1 1.14 F2 1.14 G 4.95 G1 2 13.0 L5 2.65 L6 15.25 L7 6.2 L9 3.5 DIA. 3.75 16/27 ...

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LD1117A series Figure 11. DRAWING DIMENSION D 2 PAK/A (TYPE STD-ST) Package mechanical data 7106164/E 17/27 ...

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Package mechanical data Figure 12. DRAWING DIMENSION D 18/27 2 PAK/A (TYPE WOOSEOK-SUBCON.) LD1117A series 7106164/E ...

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LD1117A series 2 Table 10. D PAK/A MECHANICAL DATA DIM. MIN. A 4.40 A1 0.03 b 0.70 b1 0.80 b2 1.14 c 0.45 c2 1.23 D 8. 2.49 ...

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Package mechanical data 2 Figure 13. D PAK/A FOOTPRINT RECOMMENDED DATA Table 11. FOOTPRINT DATA 20/27 VALUES mm. 12.20 9.75 16.90 3.50 1.60 2.54 5.08 LD1117A series inch. 0.480 0.384 0.665 0.138 0.063 ...

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LD1117A series DIM. MIN. A 2.2 A1 0.9 A2 0.03 B 0.64 b4 5.2 C 0. 4 (L1 0 0° DPAK MECHANICAL ...

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Package mechanical data Tape & Reel SOT223 MECHANICAL DATA DIM. MIN 12 6.73 Bo 7.32 Ko 1.78 Po 3.9 P 7.9 22/27 mm. TYP MAX. MIN. 330 13.0 13.2 0.504 0.795 2.362 ...

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LD1117A series Tape & Reel DPAK-PPAK MECHANICAL DATA DIM. MIN 12 6.80 Bo 10.40 Ko 2.55 Po 3.9 P 7.9 mm. TYP MAX. 330 13.0 13.2 22.4 6.90 7.00 10.50 10.60 2.65 ...

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Package mechanical data & Reel D PAK-P DIM. MIN 12 10.50 Bo 15.70 Ko 4.80 Po 3.9 P 11.9 24/ PAK-D PAK/A-P PAK/A MECHANICAL DATA mm. ...

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... LD1117A series 8 Order code Table 12. Order code SOT-223 LD1117AS12TR LD1117ADT12TR LD1117AS18TR LD1117ADT18TR LD1117AS25TR LD1117ADT25TR (1) LD1117AS28TR LD1117ADT28TR LD1117AS33TR LD1117ADT33TR (1) LD1117AS50TR LD1117ADT50TR LD1117ASTR LD1117ADT-TR 1. Available on request. Part numbers 2 DPAK D PAK/A (1) (1) (1) LD1117AD2MTR Order code OUTPUT TO-220 VOLTAGE (1) LD1117AV12 1.2 V LD1117AV18 1.8 V LD1117AV25 2.5 V (1) LD1117AV28 2.85 V LD1117AV33 3 ...

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Revision history 9 Revision history Table 13. Document revision history Date Revision 29-Sep-2004 11 12-Oct-2004 12 21-Apr-2005 13 05-Jul-2005 14 10-Feb-2006 15 20-Dec-2006 16 19-Jan-2007 17 26/27 Add new Part Number #12. Mistake V max. - Table ...

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LD1117A series Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein ...

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