ST LD1117 User Manual

LD1117

SERIES

LOW DROP FIXED AND ADJUSTABLE

POSITIVE VOL T AGE REGULA TORS

■ LOW DROPOUT VOLTAGE (1V TYP.)

■ 2.85V DEVICE PERFORMANCES ARE

SUITABLE FOR SCSI-2 ACTIVE
TERMINATION

■ OUTPUT CURRENT UP TO 800 mA

■ FIXED OUTPUT VOLTAGE OF: 1.2V, 1.8V,

2.5V, 2.85V, 3.0V, 3.3V, 5.0V

■ ADJUSTABLE VERSION AVAILABILITY

=1.25V)

(V

rel

■ INTERNAL CURRENT AND THERMAL LIMIT

■ A VAILABLE IN ± 1% (AT 25°C) AND 2% IN

FULL TEMPERATURE RANGE

■ SUPPLY VOLTAGE REJECTION: 75dB (T YP.)

DESCRIPTION

The LD1117 is a LOW DROP Voltage Regulator
able to provide up to 800mA 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,

3.0V 3.3V and 5.0V. The 2.85V t yp e is ideal for
SCSI-2 lines active termination. The device is
supplied in: SOT-223, DP AK, SO-8, TO-220 and
TO-220FM. The SOT-223 and DPAK surface
mount packages optimize the thermal
characteristics even offering a relevant space
saving effect. High efficiency is assured by NP N

TO-220FM

SOT-223DPAK

TO-220

SO-8

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. On chip t rimmi ng
allows the regulator to reach a very tight output
voltage tolerance, within ± 1% at 25°C. The
ADJUSTABLE LD1117 is pin to pin compatible
with the other standard. Adjustable voltage
regulators maintaining the bette r performances i n
terms of Drop and Tolerance.

Figure 1: Block Diagram

Rev. 16

1/28October 2004

LD1117 SERIES

Figure 2: Pin Connec t ion (top view)

SOT-223 SO-8

TO-220FM

TO-220

DPAK

NOTE: The T AB is connect ed to the V

OUT

.

Table 1: Order Codes

SOT-223 SO-8 DPAK TO-220 TO-220FM

LD1117S1 2 LD1117D12 (*) LD1117DT1 2 LD1117V12 (*) LD1117F12 (*) 1.2 V

LD1117S12C (*) LD1117D12C (*) LD1117DT12C LD1117V12C (*) LD1117F12C (*) 1.2 V

LD1117S18 LD1117D18 LD1117DT18 LD1117V18 LD1117F18 1.8 V

LD1117S18C LD1117D18C LD1117DT18C LD1117V18C LD1117F18C 1.8 V

LD1117S25 LD1117D25 LD1117DT25 LD1117V25 LD1117F25 2.5 V

LD1117S25C LD1117D25C LD1117DT25C LD1117V25C LD1117F25C 2.5 V

LD1117S28 LD1117D28 LD1117DT28 LD1117V28 LD1117F28 2.85 V
LD1117S30 LD1117D30 LD1117DT30 LD1117V30 LD1117F30 3 V

LD1117S30C LD1117D30C LD1117DT30C LD1117V30C LD1117F30C 3 V

LD1117S33 LD1117D33 LD1117DT33 LD1117V33 LD1117F33 3.3 V

LD1117S33C LD1117D33C LD1117DT33C LD1117V33C LD1117F33C 3.3 V

LD1117S50 LD1117D50 LD1117DT50 LD1117V50 LD1117F50 5 V

LD1117S50C LD1117D50C LD1117DT50C LD1117V50C LD1117F50C 5 V

LD1117S LD1117D LD1117DT LD1117V LD1117F ADJ FROM 1.25

LD1117SC LD1117DC LD1117DTC LD1117VC LD1117FC ADJ FROM 1.25

OUTPUT

VOLTAGE

TO 15V

TO 15V

(*) Avai l abl e on request

2/28

LD1117 SERIES

Table 2: Absolute Maximum Ratings

Symbol Parameter Value Unit

V
P
T

T

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not impl i ed. Over the abov e suggeste d M ax Power Dis si pation a Sho rt Circuit could defini tively dama ge the device.

Table 3: Thermal Data

Symbol Parameter SOT-223 SO-8 DPAK TO-220 TO-220FM Unit

R

thj-case

R

thj-amb

Figure 3: Applica t i on Circuit (FOR 1.2 V)

DC Input Voltage

IN

Power Dissipation

tot

Storage Temperature Range

stg

Operating Junction Temperature Range for C Version -40 to +125 °C

op

15 V
12 W

-40 to +150 °C

for standard Version 0 to +125 °C

Thermal Resistance Junction-case
Thermal Resistance Junction-ambient

15 20 8 3 4 °C/W

50 60 °C/W

Figure 4: Applica t i on Circuit (FOR OTHER FIXED OUTPUT VOLTAGES)

3/28

LD1117 SERIES

Table 4: Electrical Characteristics Of LD1117#12 (refer to the test circuits, TJ = 0 to 125°C,

= 10 µF, R = 120 Ω between GND and OUT pins, unless otherwise specified)

C

O

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

Output Voltage Vin = 3.2 V IO = 10 mA TJ = 25°C 1.188 1.20 1.212 V

O

V

Reference Voltage IO = 10 to 800 mA Vin - VO= 1.4 to 10 V 1.140 1.20 1.260 V

O

∆V
∆V
∆V
∆V

∆I

I

O(min)

SVR Supply Voltage Rejection I

Line Regulation Vin - VO = 1.5 to 13.75 V IO = 10 mA 0.035 0.2 %

O

Load Regulation Vin - VO = 3 V IO = 10 to 800 mA 0.1 0.4 %

O

Temperature Stability 0.5 %

O

Long Term Stability 1000 hrs, TJ = 125°C 0.3 %

O

Operating Input Voltage 15 V

V

in

Adjustment Pin Current Vin ≤ 15 V 60 120 µA

I

adj

Adjustment Pin Current

adj

Change

Vin - VO = 1.4 to 10 V
I

= 10 to 800 mA

O

15µA

Minimum Load Current Vin = 15 V 2 5 mA
Output Current Vin - VO = 5 V TJ = 25°C 800 950 1300 mA

I

O

eN Output Noise (%V

V

Dropout Voltage IO = 100 mA 1 1.1 V

d

Thermal Regulation T

) B =10Hz to 10KHz TJ = 25°C 0.003 %

O

= 40 mA f = 120Hz TJ = 25°C

O

V

- VO = 3 V V

in

= 500 mA 1.05 1.15

I

O

= 800 mA 1.10 1.2

I

O

= 25°C 30ms Pulse 0.01 0.1 %/W

a

ripple

= 1 V

PP

60 75 dB

Table 5: Electrical Characteristics Of LD1117#18 (refer to the test circuits, T

= 10 µF unless otherwise specified)

C

O

= 0 to 125°C,

J

Symbol Parameter Test Conditions Min. Typ. Max. Unit

Output Voltage Vin = 3.8 V IO = 10 mA TJ = 25°C 1.78 1.8 1.82 V

V

O

Output Voltage IO = 0 to 800 mA Vin = 3.3 to 8 V 1.76 1.84 V

V

O

∆V
∆V
∆V
∆V

SVR Supply Voltage Rejection I

Line Regulation Vin = 3.3 to 8 V IO = 0 mA 1 6 mV

O

Load Regulation Vin = 3.3 V IO = 0 to 800 mA 1 10 mV

O

Temperature Stability 0.5 %

O

Long Term Stability 1000 hrs, TJ = 125°C 0.3 %

O

V

Operating Input Voltage IO = 100 mA 10 V

in

Quiescent Current Vin ≤ 8 V 5 10 mA

I

d

I

Output Current Vin = 6.8 V TJ = 25°C 800 950 1300 mA

O

eN Output Noise Voltage B =10Hz to 10KHz T

= 40 mA f = 120Hz TJ = 25°C

O

V

= 5.5 V V

in

V

Dropout Voltage IO = 100 mA 1 1.1 V

d

I

= 500 mA 1.05 1.15

O

= 800 mA 1.10 1.2

I

O

Thermal Regulation T

= 25°C 30ms Pulse 0.01 0.1 %/W

a

ripple

= 25°C 100 µV

J

60 75 dB

= 1 V

PP

4/28

LD1117 SERIES

Table 6: Electrical Characteristics Of LD1117#25 (refer to the test circuits, TJ = 0 to 125°C,

C

= 10 µF unless otherwise specified)

O

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

Output Voltage Vin = 4.5 V IO = 10 mA TJ = 25°C 2.475 2.5 2.525 V

O

V

Output Voltage IO = 0 to 800 mA Vin = 3.9 to 10 V 2.45 2.55 V

O

∆V
∆V
∆V
∆V

SVR Supply Voltage Rejection I

Line Regulation Vin = 3.9 to 10 V IO = 0 mA 1 6 mV

O

Load Regulation Vin = 3.9 V IO = 0 to 800 mA 1 10 mV

O

Temperature Stability 0.5 %

O

Long Term Stability 1000 hrs, TJ = 125°C 0.3 %

O

Operating Input Voltage IO = 100 mA 15 V

V

in

Quiescent Current Vin ≤ 10 V 5 10 mA

I

d

Output Current Vin = 7.5 V TJ = 25°C 800 950 1300 mA

I

O

eN Output Noise Voltage B =10Hz to 10KHz T

= 40 mA f = 120Hz TJ = 25°C

O

V

= 5.5 V V

in

V

Dropout Voltage IO = 100 mA 1 1.1 V

d

= 500 mA 1.05 1.15

I

O

= 800 mA 1.10 1.2

I

O

Thermal Regulation T

= 25°C 30ms Pulse 0.01 0.1 %/W

a

ripple

= 25°C 100 µV

J

60 75 dB

= 1 V

PP

Table 7: Electrical Characteristics Of LD1117#28 (refer to the test circuits, T

= 10 µF unless otherwise specified)

C

O

= 0 to 125°C,

J

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

Output Voltage Vin = 4.85 VIO = 10 mA TJ = 25°C 2.82 2.85 2.88 V

O

Output Voltage IO = 0 to 800 mA Vin = 4.25 to 10 V 2.79 2.91 V

V

O

∆V
∆V
∆V
∆V

SVR Supply Voltage Rejection I

Line Regulation Vin = 4.25 to 10 V IO = 0 mA 1 6 mV

O

Load Regulation Vin = 4.25 V IO = 0 to 800 mA 1 10 mV

O

Temperature Stability 0.5 %

O

Long Term Stability 1000 hrs, TJ = 125°C 0.3 %

O

Operating Input Voltage IO = 100 mA 15 V

V

in

I

Quiescent Current Vin ≤ 10 V 5 10 mA

d

I

Output Current Vin = 7.85 VTJ = 25°C 800 950 1300 mA

O

eN Output Noise Voltage B =10Hz to 10KHz T

= 40 mA f = 120Hz TJ = 25°C

O

V

= 5.85 VV

in

V

Dropout Voltage IO = 100 mA 1 1.1 V

d

= 500 mA 1.05 1.15

I

O

= 800 mA 1.10 1.2

I

O

Thermal Regulation T

= 25°C 30ms Pulse 0.01 0.1 %/W

a

ripple

= 25°C 100 µV

J

60 75 dB

= 1 V

PP

5/28

LD1117 SERIES

Table 8: Electrical Characteristics Of LD1117#30 (refer to the test circuits, TJ = 0 to 125°C,

= 10 µF unless otherwise specified)

C

O

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

Output Voltage Vin = 5 V IO = 10 mA TJ = 25°C 2.97 3 3.03 V

O

V

Output Voltage IO = 0 to 800 mA Vin = 4.5 to 10 V 2.94 3.06 V

O

∆V
∆V
∆V
∆V

SVR Supply Voltage Rejection I

Line Regulation Vin = 4.5 to 12 V IO = 0 mA 1 6 mV

O

Load Regulation Vin = 4.5 V IO = 0 to 800 mA 1 10 mV

O

Temperature Stability 0.5 %

O

Long Term Stability 1000 hrs, TJ = 125°C 0.3 %

O

Operating Input Voltage IO = 100 mA 15 V

V

in

Quiescent Current Vin ≤ 12 V 5 10 mA

I

d

Output Current Vin = 8 V TJ = 25°C 800 950 1300 mA

I

O

eN Output Noise Voltage B =10Hz to 10KHz T

= 40 mA f = 120Hz TJ = 25°C

O

V

= 6 V V

in

V

Dropout Voltage IO = 100 mA 1 1.1 V

d

= 500 mA 1.05 1.15

I

O

= 800 mA 1.10 1.2

I

O

Thermal Regulation T

= 25°C 30ms Pulse 0.01 0.1 %/W

a

ripple

= 25°C 100 µV

J

60 75 dB

= 1 V

PP

Table 9: Electrical Characteristics Of LD1117#33 (refer to the test circuits, T

= 10 µF unless otherwise specified)

C

O

= 0 to 125°C,

J

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

Output Voltage Vin = 5.3 V IO = 10 mA TJ = 25°C 3.267 3.3 3.333 V

O

V

Output Voltage IO = 0 to 800 mA Vin = 4.75 to 10 V 3.235 3.365 V

O

∆V
∆V
∆V
∆V

SVR Supply Voltage Rejection I

Line Regulation Vin = 4.75 to 15 V IO = 0 mA 1 6 mV

O

Load Regulation Vin = 4.75 V IO = 0 to 800 mA 1 10 mV

O

Temperature Stability 0.5 %

O

Long Term Stability 1000 hrs, TJ = 125°C 0.3 %

O

Operating Input Voltage IO = 100 mA 15 V

V

in

Quiescent Current Vin ≤ 15 V 5 10 mA

I

d

Output Current Vin = 8.3 V TJ = 25°C 800 950 1300 mA

I

O

eN Output Noise Voltage B =10Hz to 10KHz T

= 40 mA f = 120Hz TJ = 25°C

O

V

= 6.3 V V

in

V

Dropout Voltage IO = 100 mA 1 1.1 V

d

= 500 mA 1.05 1.15

I

O

= 800 mA 1.10 1.2

I

O

Thermal Regulation T

= 25°C 30ms Pulse 0.01 0.1 %/W

a

ripple

= 25°C 100 µV

J

60 75 dB

= 1 V

PP

6/28

LD1117 SERIES

Table 10: Electrical Characteristics Of LD1117#50 (refer to the test circuits, TJ = 0 to 125°C,

= 10 µF unless otherwise specified)

C

O

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

Output Voltage Vin = 7 V IO = 10 mA TJ = 25°C 4.95 5 5.05 V

O

V

Output Voltage IO = 0 to 800 mA Vin = 6.5 to 15 V 4.9 5.1 V

O

∆V
∆V
∆V
∆V

SVR Supply Voltage Rejection I

Line Regulation Vin = 6.5 to 15 V IO = 0 mA 1 10 mV

O

Load Regulation Vin = 6.5 V IO = 0 to 800 mA 1 15 mV

O

Temperature Stability 0.5 %

O

Long Term Stability 1000 hrs, TJ = 125°C 0.3 %

O

Operating Input Voltage IO = 100 mA 15 V

V

in

Quiescent Current Vin ≤ 15 V 5 10 mA

I

d

Output Current Vin = 10 V TJ = 25°C 800 950 1300 mA

I

O

eN Output Noise Voltage B =10Hz to 10KHz T

= 40 mA f = 120Hz TJ = 25°C

O

V

= 8 V V

in

V

Dropout Voltage IO = 100 mA 1 1.1 V

d

= 500 mA 1.05 1.15

I

O

= 800 mA 1.10 1.2

I

O

Thermal Regulation T

= 25°C 30ms Pulse 0.01 0.1 %/W

a

ripple

= 25°C 100 µV

J

60 75 dB

= 1 V

PP

Table 11: Electrical Characteristics Of LD1117 (ADJUSTABLE) (refer to the test circuits,
T

= 0 to 125°C, CO = 10 µF unless otherwise specified)

J

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

Reference Voltage Vin - VO = 2 V IO = 10 mA TJ =

ref

Reference Voltage IO = 10 to 800 mA Vin - VO= 1.4 to 10 V1.225 1.275 V

V

ref

∆V
∆V
∆V
∆V

∆I

I

O(min)

Line Regulation Vin - VO = 1.5 to 13.75 V IO = 10 mA 0.035 0.2 %

O

Load Regulation Vin - VO = 3 V IO = 10 to 800 mA 0.1 0.4 %

O

Temperature Stability 0.5 %

O

Long Term Stability 1000 hrs, TJ = 125°C 0.3 %

O

Operating Input Voltage 15 V

V

in

I

Adjustment Pin Current Vin ≤ 15 V 60 120 µA

adj

Adjustment Pin Current

adj

Change
Minimum Load Current Vin = 15 V 2 5 mA

Output Current Vin - VO = 5 V TJ = 25°C 800 950 1300 mA

I

O

eN Output Noise (%V

) B =10Hz to 10KHz TJ = 25°C 0.003 %

O

SVR Supply Voltage Rejection I

V

Dropout Voltage IO = 100 mA 1 1.1 V

d

Thermal Regulation T

25°C

Vin - VO = 1.4 to 10 V
I

= 10 to 800 mA

O

= 40 mA f = 120Hz TJ = 25°C

O

V

- VO = 3 V V

in

I

= 500 mA 1.05 1.15

O

= 800 mA 1.10 1.2

I

O

= 25°C 30ms Pulse 0.01 0.1 %/W

a

ripple

= 1 V

PP

1.238 1.25 1.262 V

15µA

60 75 dB

7/28

LD1117 SERIES

Table 12: Electrical Characteristics Of LD1117#12C (refer to the test circuits, TJ = 0 to 125°C,

= 10 µF, R = 120 Ω between GND and OUT pins, unless otherwise specified)

C

O

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

Reference Voltage Vin - VO= 2V IO = 10 mA TJ = 25°C 1.176 1.20 1.224 V

ref

V

Reference Voltage IO = 10 to 800 mA Vin - VO= 1.4 to 10 V1.120 1.20 1.280 V

ref

∆V
∆V
∆V
∆V

∆I

I

O(min)

Line Regulation Vin - VO = 1.5 to 13.75 V IO = 10 mA 1 %

O

Load Regulation Vin - VO = 3 V IO = 10 to 800 mA 1 %

O

Temperature Stability 0.5 %

O

Long Term Stability 1000 hrs, TJ = 125°C 0.3 %

O

Operating Input Voltage 15 V

V

in

Adjustment Pin Current Vin ≤ 15 V 60 120 µA

I

adj

Adjustment Pin Current

adj

Change
Minimum Load Current Vin = 15 V 2 5 mA

I

Output Current Vin - VO = 5 V TJ = 25°C 800 950 1300 mA

O

eN Output Noise (%V

) B =10Hz to 10KHz TJ = 25°C 0.003 %

O

SVR Supply Voltage Rejection I

V

Dropout Voltage IO = 100 mA TJ = 0 to 125°C 1 1.1 V

d

Thermal Regulation T

Vin - VO = 1.4 to 10 V
I

= 10 to 800 mA

O

= 40 mA f = 120Hz TJ = 25°C

O

V

- VO = 3 V V

in

= 500 mA TJ = 0 to 125°C 1.05 1.2

I

O

I

= 800 mA TJ = 0 to 125°C 1.10 1.3

O

= 25°C 30ms Pulse 0.01 0.1 %/W

a

ripple

= 1 V

PP

60 75 dB

15µA

8/28

LD1117 SERIES

Table 13: Electrical Characteristics Of LD1117#18C (refer to the test circuits, TJ = -40 to 125°C,

= 10 µF unless otherwise specified)

C

O

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

Output Voltage Vin = 3.8 V IO = 10 mA TJ = 25°C 1.76 1.8 1.84 V

O

V

Output Voltage IO = 0 to 800 mA Vin = 3.9 to 10 V 1.73 1.87 V

O

∆V
∆V
∆V
∆V

SVR Supply Voltage Rejection I

Line Regulation Vin = 3.3 to 8 V IO = 0 mA 1 30 mV

O

Load Regulation Vin = 3.3 V IO = 0 to 800 mA 1 30 mV

O

Temperature Stability 0.5 %

O

Long Term Stability 1000 hrs, TJ = 125°C 0.3 %

O

Operating Input Voltage IO = 100 mA 10 V

V

in

Quiescent Current Vin ≤ 8 V 5 10 mA

I

d

Output Current Vin = 6.8 V TJ = 25°C 800 950 1300 mA

I

O

eN Output Noise Voltage B =10Hz to 10KHz T

= 40 mA f = 120Hz TJ = 25°C

O

V

= 5.5 V V

in

V

Dropout Voltage IO = 100 mA TJ = 0 to 125°C 1 1.1 V

d

= 500 mA TJ = 0 to 125°C 1.05 1.15

I

O

= 800 mA TJ = 0 to 125°C 1.10 1.2

I

O

Dropout Voltage IO = 100 mA 1.1 V

V

d

I

= 500 mA 1.2

O

= 800 mA 1.3

I

O

Thermal Regulation T

= 25°C 30ms Pulse 0.01 0.1 %/W

a

ripple

= 25°C 100 µV

J

60 75 dB

= 1 V

PP

9/28