SGS Thomson Microelectronics LD1117BS33TR, LD1117BS28TR, LD1117BS25TR, LD1117BS18TR, LD1117BDT50TR Datasheet

LD1117A/B

SERIES

LOW DROP FIXED AND ADJUSTABLE

POSITIVE VOLTAGE REGULATORS

PRELIMINARY DATA



June 2000

BLOCKDIAGRAM

TO-252 (DPAK)SOT-223

■ LOWDROPOUT VOLTAGE

(1.15VTYP@ I

OUT

=1.2A,25oC)

■

VERYLOW QUIESCENTCURRENT
(5mA TYP @ 25

o

C)

■ TYPEA: OUTPUTCURRENT UPTO 1000mA

■

TYPEB: OUTPUTCURRENT UPTO 1200mA

■ FIXED OUTPUTVOLTAGE OF:1.8V, 2.5V,

2.85V, 3.3V,5.0V

■

ADJUSTABLEVERSIONAVAILABILITY
(V

ref

=1.25V)

■ INTERNALCURRENTAND THERMALLIMIT

■

ONLY10µF FOR STABILITY

■ AVAILABLEIN± 2% (AT 25

o

C) AND4% IN

FULLTEMPERATURERANGE

■

HIGHSUPPLY VOLTAGEREJECTION:
(80dBTYP)

■ TEMPERATURERANGE: 0

o

C TO 125oC

DESCRIPTION

The LD1117A and LD1117B are two LOW
DROP Voltage Regulator able to provide
respectively up to 1000mA and 1200mA of
Output Current, available even in adjustable
version (V

ref

=1.25V). Concerning fixed versions,

are offered the following Output Voltages: 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. The

SOT-223 and DPAK surface mount packages
optimize the thermal characteristics even
offering a relevant space saving effect. High
efficency is assured by NPN pass transistor. In
fact in this case, unlike than PNP one, the
Quiescent Current flows mostly into the load.
Only a very common 10µF minimum capacitor
is needed for stability. The ADJUSTABLE
LD1117 is pin to pin compatible with the other
standard Adjustable voltage regulators
maintaining the better performances in terms of
Drop and Tolerance.

1/16

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

IN

DC InputVoltage 10 V

P

tot

PowerDissipation 12 W

T

stg

Storage TemperatureRange -40 to 150

o

C

T

op

OperatingJunction TemperatureRange 0 to 125

o

C

Absolute Maximum Ratings are those value beyond which damage to the device may occur. Functional operation under these condition is
not implied. Over the above suggested Max PowerDissipation a ShortCircuit could definetively damage the device.

THERMALDATA

Symbol Parameter SOT-223 DPAK Unit

R

thj-cas e

Thermal Resistance Junction-case 15 8

o

C/W

APPLICATION CIRCUIT

LD1117A/B SERIES

2/16

CONNECTION DIAGRAM AND ORDERING NUMBERS

(top view)

SOT-223 DPAK OutputVoltage

LD1117AS18TR
LD1117BS18TR
LD1117AS25TR
LD1117BS25TR
LD1117AS28TR
LD1117BS28TR
LD1117AS33TR
LD1117BS33TR
LD1117AS50TR
LD1117BS50TR

LD1117ADT18TR
LD1117BDT18TR
LD1117ADT25TR
LD1117BDT25TR
LD1117ADT28TR
LD1117BDT28TR
LD1117ADT33TR
LD1117BDT33TR
LD1117ADT50TR
LD1117BDT50TR

1.8V

1.8V

2.5V

2.5V

2.85V

2.85V

3.3V

3.3V
5V
5V

LD1117AST-R
LD1117BST-R

LD1117ADT-R
LD1117BDT-R

ADJUSTABLE

FROM 1.25 TO 15V

SOT-223 DPAK

LD1117A/B SERIES

3/16

ELECTRICAL CHARACTERISTICS FOR LD1117A#18

(refer to the test circuits,

T

j

= 0 to 125oC, CO=10µF, CI=10µF unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

OutputVoltage VI=3.8 V IO=10mA Tj=25oC 1.764 1. 8 1.836 V

V

O

OutputVoltage IO= 0 to1000mA VI= 3.3to 8 V 1.728 1.872 V

∆

V

O

LineRegulation VI=3.3 to 8 V IO=0 mA 1 6 mV

∆

V

O

LoadRegulation VI=3.3 V IO= 0 to 1000mA 1 10 mV

V

I

OperatingInput Voltage IO= 100mA 10 V

I

d

QuiescentCurrent V

I

≤

8V I

O

=0 mA 5 10 mA

I

O

OutputCurrent VI-VO=5V Tj=25oC 1000 1200 mA

SVR Supply VoltageRejection I

O

= 40 mA f = 120 Hz

V

I-VO

=3V V

ripple

= 1 Vpp

60 80 dB

V

D

Dropout Voltage IO= 100mA

I

O

= 500mA

I

O

= 1000 mA

1

1.05

1.15

1.10

1.15

1.30

V
V
V

∆

V

O(pw r)

Thermal Regulation Ta=25oC 30msPulse 0.08 0.2 %/W

ELECTRICAL CHARACTERISTICS FOR LD1117B#18(refer to the test circuits,
T

j

= 0 to 125oC, CO=10µF, CI=10µF unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

OutputVoltage VI=3.8 V IO=10mA Tj=25oC 1.764 1. 8 1.836 V

V

O

OutputVoltage IO= 0 to1200mA VI= 3.3to 8 V 1.728 1.872 V

∆V

O

LineRegulation VI=3.3 to 8 V IO=0 mA 1 6 mV

∆V

O

LoadRegulation VI=3.3 V IO= 0 to 1200mA 1 10 mV

V

I

OperatingInput Voltage IO= 100mA 10 V

I

d

QuiescentCurrent V

I

≤

8V I

O

=0 mA 5 10 mA

I

O

OutputCurrent VI-VO=5V Tj=25oC 1200 1500 mA

SVR Supply VoltageRejection I

O

= 40 mA f = 120 Hz

V

I-VO

=3V V

ripple

= 1 Vpp

60 80 dB

V

D

Dropout Voltage IO= 100mA

I

O

= 500mA

I

O

= 1200 mA

1

1.05

1.15

1.10

1.15

1.30

V
V
V

∆V

O(pw r)

Thermal Regulation Ta=25oC 30msPulse 0.08 0.2 %/W

LD1117A/B SERIES

4/16

ELECTRICAL CHARACTERISTICS FOR LD1117A#25

(refer to the test circuits,

T

j

= 0 to 125oC, CO=10µF, CI=10µF unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

OutputVoltage VI=4.5 V IO=10mA Tj=25oC 2.45 2.5 2.55 V

V

O

OutputVoltage IO= 0 to1000mA VI= 3.9to 8 V 2.4 2.6 V

∆

V

O

LineRegulation VI=3.9 to 8 V IO=0 mA 1 6 mV

∆

V

O

LoadRegulation VI=3.9 V IO= 0 to 1000mA 1 10 mV

V

I

OperatingInput Voltage IO= 100mA 10 V

I

d

QuiescentCurrent V

I

≤

10 V I

O

=0 mA 5 10 mA

I

O

OutputCurrent VI-VO=5V Tj=25oC 1000 1200 mA

SVR Supply VoltageRejection I

O

= 40 mA f = 120 Hz

V

I-VO

=3V V

ripple

= 1 Vpp

60 80 dB

V

D

Dropout Voltage IO= 100mA

I

O

= 500mA

I

O

= 1000 mA

1

1.05

1.15

1.10

1.15

1.30

V
V
V

∆

V

O(pw r)

Thermal Regulation Ta=25oC 30msPulse 0.08 0.2 %/W

ELECTRICAL CHARACTERISTICS FOR LD1117B#25(refer to the test circuits,
T

j

= 0 to 125oC, CO=10µF, CI=10µF unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

OutputVoltage VI=4.5 V IO=10mA Tj=25oC 2.45 2.5 2.55 V

V

O

OutputVoltage IO= 0 to1200mA VI= 3.9to 8 V 2.4 2.6 V

∆V

O

LineRegulation VI=3.9 to 8 V IO=0 mA 1 6 mV

∆V

O

LoadRegulation VI=3.9 V IO= 0 to 1200mA 1 10 mV

V

I

OperatingInput Voltage IO= 100mA 10 V

I

d

QuiescentCurrent V

I

≤

10 V I

O

=0 mA 5 10 mA

I

O

OutputCurrent VI-VO=5V Tj=25oC 1200 1500 mA

SVR Supply VoltageRejection I

O

= 40 mA f = 120 Hz

V

I-VO

=3V V

ripple

= 1 Vpp

60 80 dB

V

D

Dropout Voltage IO= 100mA

I

O

= 500mA

I

O

= 1200 mA

1

1.05

1.15

1.10

1.15

1.30

V
V
V

∆V

O(pw r)

Thermal Regulation Ta=25oC 30msPulse 0.08 0.2 %/W

LD1117A/B SERIES

5/16

ELECTRICAL CHARACTERISTICS FOR LD1117A#28

(refer to the test circuits,

T

j

= 0 to 125oC, CO=10µF, CI=10µF unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

OutputVoltage VI=4.85 V IO=10mA Tj=25oC 2. 793 2.85 2.907 V

V

O

OutputVoltage IO= 0 to1000mA VI= 4.25 to 10 V 2.736 2.964 V

∆

V

O

LineRegulation VI=4.25 to 8 V IO=0mA 1 6 mV

∆

V

O

LoadRegulation VI=4.25 V IO=0 to 1000mA 2 10 mV

V

I

OperatingInput Voltage IO= 100mA 10 V

I

d

QuiescentCurrent V

I

≤

10 V I

O

=0 mA 4.5 10 mA

I

O

OutputCurrent VI-VO=5V Tj=25oC 1000 1200 mA

SVR Supply VoltageRejection I

O

= 40 mA f = 120 Hz

V

I-VO

=3V V

ripple

= 1 Vpp

60 75 dB

V

D

Dropout Voltage IO= 100mA

I

O

= 500mA

I

O

= 1000 mA

1

1.05

1.15

1.10

1.15

1.30

V
V
V

∆

V

O(pw r)

Thermal Regulation Ta=25oC 30msPulse 0.08 0.2 %/W

ELECTRICAL CHARACTERISTICS FOR LD1117B#28(refer to the test circuits,
T

j

= 0 to 125oC, CO=10µF, CI=10µF unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

OutputVoltage VI=4.85 V IO=10mA Tj=25oC 2. 793 2.85 2.907 V

V

O

OutputVoltage IO= 0 to1200mA VI= 4.25 to 10 V 2.736 2.964 V

∆V

O

LineRegulation VI=4.25 to 10 V IO=0mA 1 6 mV

∆V

O

LoadRegulation VI=4.25 V IO=0 to 1200mA 2 10 mV

V

I

OperatingInput Voltage IO= 100mA 10 V

I

d

QuiescentCurrent V

I

≤

10 V I

O

=0 mA 4.5 10 mA

I

O

OutputCurrent VI-VO=5V Tj=25oC 1200 1500 mA

SVR Supply VoltageRejection I

O

= 40 mA f = 120 Hz

V

I-VO

=3V V

ripple

= 1 Vpp

60 75 dB

V

D

Dropout Voltage IO= 100mA

I

O

= 500mA

I

O

= 1200 mA

1

1.05

1.15

1.10

1.15

1.30

V
V
V

∆V

O(pw r)

Thermal Regulation Ta=25oC 30msPulse 0.08 0.2 %/W

LD1117A/B SERIES

6/16

ELECTRICAL CHARACTERISTICS FOR LD1117A#33

(refer to the test circuits,

T

j

= 0 to 125oC, CO=10µF, CI=10µF unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

OutputVoltage VI=5.3 V IO=10mA Tj=25oC 3.234 3. 3 3.366 V

V

O

OutputVoltage IO= 0 to1000mA VI= 4.75 to 10 V 3.168 3.432 V

∆

V

O

LineRegulation VI=4.75 to 8 V IO=0mA 1 6 mV

∆

V

O

LoadRegulation VI=4.75 V IO=0 to 1000mA 1 10 mV

V

I

OperatingInput Voltage IO= 100mA 10 V

I

d

QuiescentCurrent V

I

≤

10 V I

O

=0 mA 5 10 mA

I

O

OutputCurrent VI-VO=5V Tj=25oC 1000 1200 mA

SVR Supply VoltageRejection I

O

= 40 mA f = 120 Hz

V

I-VO

=3V V

ripple

= 1 Vpp

60 75 dB

V

D

Dropout Voltage IO= 100mA

I

O

= 500mA

I

O

= 1000 mA

1

1.05

1.15

1.10

1.15

1.30

V
V
V

∆

V

O(pw r)

Thermal Regulation Ta=25oC 30msPulse 0.08 0.2 %/W

ELECTRICAL CHARACTERISTICS FOR LD1117B#33(refer to the test circuits,
T

j

= 0 to 125oC, CO=10µF, CI=10µF unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

OutputVoltage VI=5.3 V IO=10mA Tj=25oC 3.234 3. 3 3.366 V

V

O

OutputVoltage IO= 0 to1200mA VI= 4.75 to 10 V 3.168 3.432 V

∆V

O

LineRegulation VI=4.75 to 10 V IO=0mA 1 6 mV

∆V

O

LoadRegulation VI=4.75 V IO=0 to 1200mA 1 10 mV

V

I

OperatingInput Voltage IO= 100mA 10 V

I

d

QuiescentCurrent V

I

≤

10 V I

O

=0 mA 5 10 mA

I

O

OutputCurrent VI-VO=5V Tj=25oC 1200 1500 mA

SVR Supply VoltageRejection I

O

= 40 mA f = 120 Hz

V

I-VO

=3V V

ripple

= 1 Vpp

60 75 dB

V

D

Dropout Voltage IO= 100mA

I

O

= 500mA

I

O

= 1200 mA

1

1.05

1.15

1.10

1.15

1.30

V
V
V

∆V

O(pw r)

Thermal Regulation Ta=25oC 30msPulse 0.08 0.2 %/W

LD1117A/B SERIES

7/16

ELECTRICAL CHARACTERISTICS FOR LD1117A#50

(refer to the test circuits,

T

j

= 0 to 125oC, CO=10µF, CI=10µF unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

OutputVoltage VI=7 V IO=10mA Tj=25oC 4.955.1V

V

O

OutputVoltage IO= 0 to1000mA VI= 6.4to 10 V 4.8 5.2 V

∆

V

O

LineRegulation VI=6.4 to 8 V IO=0 mA 1 6 mV

∆

V

O

LoadRegulation VI=6.4 V IO= 0 to 1000mA 1 10 mV

V

I

OperatingInput Voltage IO= 100mA 10 V

I

d

QuiescentCurrent V

I

≤

10 V I

O

=0 mA 5 10 mA

I

O

OutputCurrent VI-VO=5V Tj=25oC 1000 1200 mA

SVR Supply VoltageRejection I

O

= 40 mA f = 120 Hz

V

I-VO

=3V V

ripple

= 1 Vpp

60 80 dB

V

D

Dropout Voltage IO= 100mA

I

O

= 500mA

I

O

= 1000 mA

1

1.05

1.15

1.10

1.15

1.30

V
V
V

∆

V

O(pw r)

Thermal Regulation Ta=25oC 30msPulse 0.08 0.2 %/W

ELECTRICAL CHARACTERISTICS FOR LD1117B#50(refer to the test circuits,
T

j

= 0 to 125oC, CO=10µF, CI=10µF unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

OutputVoltage VI=7 V IO=10mA Tj=25oC 4.955.1V

V

O

OutputVoltage IO= 0 to1200mA VI= 6.4to 10 V 4.8 5.2 V

∆V

O

LineRegulation VI=6.4 to 10 V IO=0mA 1 6 mV

∆V

O

LoadRegulation VI=6.4 V IO= 0 to 1200mA 1 10 mV

V

I

OperatingInput Voltage IO= 100mA 10 V

I

d

QuiescentCurrent V

I

≤

10 V I

O

=0 mA 5 10 mA

I

O

OutputCurrent VI-VO=5V Tj=25oC 1200 1500 mA

SVR Supply VoltageRejection I

O

= 40 mA f = 120 Hz

V

I-VO

=3V V

ripple

= 1 Vpp

60 80 dB

V

D

Dropout Voltage IO= 100mA

I

O

= 500mA

I

O

= 1200 mA

1

1.05

1.15

1.10

1.15

1.30

V
V
V

∆V

O(pw r)

Thermal Regulation Ta=25oC 30msPulse 0.08 0.2 %/W

LD1117A/B SERIES

8/16

ELECTRICAL CHARACTERISTICS FOR LD1117ADJ

(refer to thetest circuits,

T

j

= 0 to 125oC, CO=10µF, CI=10µF unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

OutputVoltage VI=5.3 V IO=10mA Tj=25oC 1.225 1.25 1.275 V

V

O

OutputVoltage IO= 0 to1000mA VI= 2.75 to 10 V 1.2 1.3 V

∆

V

O

LineRegulation VI=2.75 to 10 V IO=0mA 1 6 mV

∆

V

O

LoadRegulation VI=2.75 V IO=0 to 1000mA 1 10 mV

V

I

OperatingInput Voltage IO= 100mA 10 V

I

d

QuiescentCurrent V

I

≤

8V I

O

=0 mA 5 10 mA

I

O

OutputCurrent VI-VO=5V Tj=25oC 1000 1200 mA

SVR Supply VoltageRejection I

O

= 40 mA f = 120 Hz

V

I-VO

=3V V

ripple

= 1 Vpp

60 80 dB

V

D

Dropout Voltage IO= 100mA

I

O

= 500mA

I

O

= 1000 mA

1

1.05

1.15

1.10

1.15

1.30

V
V
V

∆

V

O(pw r)

Thermal Regulation Ta=25oC 30msPulse 0.08 0.2 %/W

ELECTRICAL CHARACTERISTICS FOR LD1117BDJ(refer to the test circuits,
T

j

= 0 to 125oC, CO=10µF, CI=10µF unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

O

OutputVoltage VI=5.3 V IO=10mA Tj=25oC 1.225 1.25 1.275 V

V

O

OutputVoltage IO= 0 to1200mA VI= 2.75 to 10 V 1.2 1.3 V

∆V

O

LineRegulation VI=2.75 to 10 V IO=0mA 1 6 mV

∆V

O

LoadRegulation VI=2.75 V IO=0 to 1200mA 1 10 mV

V

I

OperatingInput Voltage IO= 100mA 10 V

I

d

QuiescentCurrent V

I

≤

8V I

O

=0 mA 5 10 mA

I

O

OutputCurrent VI-VO=5V Tj=25oC 1200 1500 mA

SVR Supply VoltageRejection I

O

= 40 mA f = 120 Hz

V

I-VO

=3V V

ripple

= 1 Vpp

60 80 dB

V

D

Dropout Voltage IO= 100mA

I

O

= 500mA

I

O

= 1200 mA

1

1.05

1.15

1.10

1.15

1.30

V
V
V

∆V

O(pw r)

Thermal Regulation Ta=25oC 30msPulse 0.08 0.2 %/W

LD1117A/B SERIES

9/16

TYPICALAPPLICATIONS:
FIGURE1: Negative Supply

FIGURE2:

ActiveTerminatorfor SCSI-2BUS

FIGURE3:

Circuit for IncreasingOutput Voltage

LD1117A/B SERIES

10/16

TYPICALAPPLICATIONS

(continued)

:

FIGURE4: Voltage RegulatorWithReference

FIGURE5:

Battery Backed-upRegulatedSupply

LD1117A/B SERIES

11/16

TYPICALAPPLICATIONS

(continued)

:

FIGURE6: Post-Regulated Dual Supply

LD1117A/B SERIES

12/16

LD1117ADJUSTABLE: APPLICATIONNOTE

The LD1117 ADJUSTABLE has a thermal stabilized 1.25±0.012V reference voltage between the
OUT and ADJ pins. I

ADJ

is 60µA typ. (120µA max.) and ∆I

ADJ

is 1µA typ. (5µA max.).
R1 is normallyfixed to 120Ω. From figure 7 we obtain:
V

OUT=VREF

+R2(I

ADJ+IR1

)=V

REF+R2(IADJ+VREF

/R1)=V

REF

(1 + R2 / R1) + R2 x I

ADJ

.

In normal application R2 value is in the range of few Kohm, so the R2 x I

DJ

product could not be

considered in the V

OUT

calculation; thenthe above expression becomes:

V

OUT=VREF

(1 + R2 / R1).

In order to have the better load regulation it is important to realize a good Kelvin connection of R1
and R2 resistors. In particular R1 connection must be realized very close to OUT and ADJ pin, while
R2 ground connection must be placed as near as possible to the negativeLoad pin. Ripple rejection
can be improved by introducing a 10µF electrolitic capacitor placed in parallel to the R2 resistor (see
Fig.8)

FIGURE7: Adjustable Output Voltage Application Circuit

FIGURE8: Adjustable Output Voltage Application with improved Ripple Rejection

LD1117A/B SERIES

13/16

DIM.

mm mils

MIN. TYP. MAX. MIN. TYP. MAX.

a 2.27 2.3 2.33 89.4 90.6 91.7

b 4.57 4.6 4.63 179.9 181.1 182.3
c 0.2 0.4 0.6 7.9 15.7 23.6

d 0.63 0.65 0.67 24.8 25.6 26.4

e1 1.5 1.6 1.7 59.1 63 66.9
e4 0.32 12.6

f 2.9 3 3.1 114.2 118.1 122.1

g 0.67 0.7 0.73 26.4 27.6 28.7

l1 6.7 7 7.3 263.8 275.6 287.4
l2 3.5 3.5 3.7 137.8 137.8 145.7

L 6.3 6.5 6.7 248 255.9 263.8

C

C

BE

L

a

b

e1

l1

f

g

c

d

l2

e4

P008B

SOT-223 MECHANICALDATA

LD1117A/B SERIES

14/16

DIM.

mm inch

MIN. TYP. MAX. MIN. TYP. MAX.

A 2.2 2.4 0.086 0.094
A1 0.9 1.1 0.035 0.043
A2 0.03 0.23 0.001 0.009

B 0.64 0.9 0.025 0.035
B2 5.2 5.4 0.204 0.212

C 0.45 0.6 0.017 0.023
C2 0.48 0.6 0.019 0.023

D 6 6.2 0.236 0.244

E 6.4 6.6 0.252 0.260

G 4.4 4.6 0.173 0.181

H 9.35 10.1 0.368 0.397

L2 0.8 0.031
L4 0.6 1 0.023 0.039

==

D

L2

L4

13

==

B

E

==

B2

G

2

A

C2

C

H

A1

DETAIL”A”

A2

DETAIL”A”

TO-252 (DPAK) MECHANICAL DATA

0068772-B

LD1117A/B SERIES

15/16

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LD1117A/B SERIES

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