LD1086 ST Microelectronics, LD1086 Datasheet

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LD1086

Manufacturer Part Number
LD1086
Description
1.5A LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
Manufacturer
ST Microelectronics
Datasheet

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DESCRIPTION
The LD1086 is a LOW DROP Voltage Regulator
able to provide up to 1.5A of Output Current.
Dropout is guaranteed at a maximum of 1.5V at
the maximum output current, decreasing at
lower loads. The LD1086 is a pin compatible
with older 3-terminal adjustable regulators, but
has better performances in term of drop and
output tolerance. A 2.85V output version is
suitable for SCSI-2 active termination. Unlike
PNP regulators, where a part of the output
BLOCK DIAGRAM
May 2000
OUTPUT VOLATGE 1.8V, 2.5V, 2.85V, 3.3V,
3.6V, 5V, 8V, 9V, 12V
1.5A
-40
D
ADJUSTABLE VOLTAGE REGULATORS
TYPICAL DROPOUT VOLTAGE 1.3V AT 1.5A
THREE TERMINAL ADJUSTABLE OR FIXED
GUARANTEED OUTPUT CURRENT UP TO
OUTPUT TOLERANCE 1% AT 25
INTERNAL POWER AND THERMAL LIMIT
WIDE OPERATING TEMPERATURE RANGE
PACKAGE AVAILABLE: TO-220, D
PINOUT COMPATIBILITY WITH STANDARD
2% IN FULL TEMPERATURE RANGE
2
PAK/A, DPAK,
o
C TO 125
o
C
1.5A LOW DROP FIXED AND ADJUSTABLE
o
2
POSITIVE VOLTAGE REGULATORS
PAK,
C AND
current is wasted as quiescent current, the
LD1086 quiescent current flow into the load, so
increase efficency. Only a 10
capacitor is needed for stability. The device is
supplied in TO-220, D
DPAK packages. On chip trimming allows the
regulator to reach a very tight output voltage
tolerance, within
DPAK (TO-252)
TO-220
1% at 25
2
PAK, D
o
C.
D
D
2
SERIES
PAK/A
LD1086
2
PAK
2
PAK/A and
F minimum
1/17

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LD1086 Summary of contents

Page 1

... C AND TO-220 2 PAK, DPAK (TO-252) current is wasted as quiescent current, the LD1086 quiescent current flow into the load, so increase efficency. Only a 10 capacitor is needed for stability. The device is supplied in TO-220, D DPAK packages. On chip trimming allows the regulator to reach a very tight output voltage ...

Page 2

... LD1086 SERIES ABSOLUTE MAXIMUM RATINGS Symbol V DC Input Voltage IN I Output Current OUT P Power Dissipation Storage Temperature Range stg T Operating Junction Temperature Range o p Absolute Maximum Ratings are those value beyond which damage to the device may occur. Functional operation under these condition is not implied ...

Page 3

... ELECTRICAL CHARACTERISTICS FOR LD1086#18 (refer to the test circuits -40 to 125 4 Symbol Parameter V Output Voltage O V Output Voltage (Note Line Regulation O V Line Regulation O V Load Regulation O V Load Regulation O V Dropout Voltage d I Quiescent Current d I Short Circuit Current ...

Page 4

... Short Circuit Current SC Thermal Regulation SVR Supply Voltage Rejection eN Output Noise Voltage S Temperature Stability S Long Term Stability Note1: See short-circuit curve for available output current at fixed dropout. ELECTRICAL CHARACTERISTICS FOR LD1086#33 (refer to the test circuits -40 to 125 6 Symbol Parameter V ...

Page 5

... ELECTRICAL CHARACTERISTICS FOR LD1086#36 (refer to the test circuits -40 to 125 6 Symbol Parameter V Output Voltage O V Output Voltage (Note Line Regulation O V Line Regulation O V Load Regulation O V Load Regulation O V Dropout Voltage d I Quiescent Current d I Short Circuit Current ...

Page 6

... SC Thermal Regulation SVR Supply Voltage Rejection eN Output Noise Voltage S Temperature Stability S Long Term Stability Note1: See short-circuit curve for available output current at fixed dropout. ELECTRICAL CHARACTERISTICS FOR LD1086#90 (refer to the test circuits -40 to 125 Symbol Parameter ...

Page 7

... ELECTRICAL CHARACTERISTICS FOR LD1086#120 (refer to the test circuits -40 to 125 Symbol Parameter V Output Voltage O V Output Voltage (Note Line Regulation O V Line Regulation O V Load Regulation O V Load Regulation O V Dropout Voltage d I Quiescent Current ...

Page 8

... LD1086 SERIES TYPICAL CHARACTERISTICS (unless otherwise specified T Output Voltage vs Temperature Output Voltage vs Temperature Line Regulation vs Temperature 8/17 o =125 = Output Voltage vs Temperature Short CircuitCurrent vs Dropout Voltage Load Regulation vs Temperature ...

Page 9

... TYPICAL CHARACTERISTICS (Continued) Dropout Voltage vs Temperature Adjust Pin Current vs Input Voltage Adjust Pin Current vs Output Current LD1086 SERIES Dropout Voltage vs Output Current Adjust Pin Current vs Temperature Quiescent Current vs Output Current 9/17 ...

Page 10

... LD1086 SERIES TYPICAL CHARACTERISTICS (Continued) Quiescent Current vs Input Voltage Supply Voltage Rejection vs Temperature Minimum Load Current vs Temperature 10/17 Supply Voltage Rejection vs Frequency Supply Voltage Rejection vs Output Current Stability for Adjustable ...

Page 11

... TYPICAL CHARACTERISTICS (Continued) Stability for 2.85V Line Transient Line Transient LD1086 SERIES Stability for 12V Line Transient Load Transient 11/17 ...

Page 12

... LD1086 SERIES TYPICAL CHARACTERISTICS (Continued) Load Transient 12/17 Thermal Protection ...

Page 13

... LD1086 SERIES inch TYP. MAX. 0.181 0.051 0.107 0.050 0.027 0.034 0.067 0.067 0.203 0.106 0.409 0.645 0.551 0.116 0.620 0.260 0.154 0.151 P011C 13/17 ...

Page 14

... LD1086 SERIES TO-263 (D mm DIM. MIN. TYP. A 4.4 A1 2.49 B 0.7 B2 1.14 C 0.45 C2 1. 1. DETAIL”A” 14/17 2 PAK) MECHANICAL DATA MAX. MIN. 4.6 0.173 2.69 0.098 0.93 0.027 1.7 0.044 0.6 0.017 1.36 0.048 9.35 0.352 10.4 0.393 5.28 0.192 15.85 0.590 1.4 0.050 1.75 0.055 D C DETAIL”A” ...

Page 15

... PAK/A MECHANICAL DATA mm DIM. MIN. TYP. A 4.4 A1 2.49 B 0.7 B2 1.14 C 0.45 C2 1. 1.27 inch MAX. MIN. TYP. 4.6 0.173 2.69 0.098 0.93 0.027 1.7 0.044 0.6 0.017 1.36 0.047 9.35 0.352 10.4 0.393 5.28 0.192 15.85 0.590 1.4 0.050 LD1086 SERIES MAX. 0.181 0.106 0.036 0.067 0.023 0.053 0.368 0.409 0.208 0.624 0.055 15/17 ...

Page 16

... LD1086 SERIES TO-252 (DPAK) MECHANICAL DATA DIM. MIN. TYP. A 2.2 A1 0.9 A2 0.03 B 0.64 B2 5.2 C 0. 6.4 G 4 0.6 DETAIL ”A” L2 16/17 mm MAX. MIN. 2.4 0.086 1.1 0.035 0.23 0.001 0.9 0.025 5.4 0.204 0.6 0.017 0.6 0.019 6.2 0.236 6.6 0.252 4.6 0.173 10.1 0.368 0.8 1 0.023 inch TYP. MAX. 0.094 0.043 0.009 ...

Page 17

... The ST logo is a registered trademark of STMicroelectronics 2000 STMicroelectronics – Printed in Italy – All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com . LD1086 SERIES 17/17 ...

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