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Table Of Contents

1/27December 2005

■ 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

rel

=1.25V)

■ INTERNAL CURRENT AND THERMAL LIMIT

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

FULL TEMPERATURE RANGE

■ SUPPLY VOLTAGE REJECTION: 75dB (TYP.)

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 type is ideal for

SCSI-2 lines active termination. The device is

supplied in: SOT-223, DPAK, SO-8 and TO-220.

The SOT-223 and DPAK surface mount packages

optimize the thermal characteristics even offering

a relevant space saving effect. High efficiency 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.

On chip trimming 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 better

performances in terms of Drop and Tolerance.

LD1117

SERIES

LOW DROP FIXED AND ADJUSTABLE

POSITIVE VOLTAGE REGULATORS

Figure 1: Block Diagram

SOT-223

DPAK

SO-8

TO-220

Rev. 19

Summary of content (27 pages)

PAGE 1
LD1117 SERIES LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS ■ ■ ■ ■ ■ ■ ■ ■ 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 (Vrel=1.25V) INTERNAL CURRENT AND THERMAL LIMIT AVAILABLE IN ± 1% (AT 25°C) AND 2% IN FULL TEMPERATURE RANGE SUPPLY VOLTAGE REJECTION: 75dB (TYP.
PAGE 2
LD1117 SERIES Figure 2: Pin Connection (top view) SOT-223 SO-8 DPAK TO-220 NOTE: The TAB is connected to the VOUT.
PAGE 3
LD1117 SERIES Table 2: Absolute Maximum Ratings Symbol Parameter VIN DC Input Voltage Ptot Power Dissipation Tstg Storage Temperature Range Top Operating Junction Temperature Range for C Version for standard Version Value Unit 15 V 12 W -40 to +150 °C -40 to +150 0 to +150 °C °C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
PAGE 4
LD1117 SERIES Table 4: Electrical Characteristics Of LD1117#12 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, R = 120 Ω between GND and OUT pins, unless otherwise specified) Symbol Parameter Test Conditions VO Output Voltage Vin = 3.2 V IO = 10 mA VO Reference Voltage IO = 10 to 800 mA Min. TJ = 25°C ∆VO Line Regulation Vin - VO= 1.4 to 10 V Vin - VO = 1.5 to 13.75 V IO = 10 mA ∆VO Load Regulation Vin - VO = 3 V ∆VO Temperature Stability ∆VO Long Term Stability Typ. Max.
PAGE 5
LD1117 SERIES Table 6: Electrical Characteristics Of LD1117#25 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF unless otherwise specified) Symbol Parameter Test Conditions Min. Typ. Max. Unit 2.5 2.525 V 2.55 V VO Output Voltage Vin = 4.5 V IO = 10 mA TJ = 25°C 2.475 VO Output Voltage IO = 0 to 800 mA Vin = 3.9 to 10 V 2.45 ∆VO Line Regulation Vin = 3.9 to 10 V IO = 0 mA 1 6 mV ∆VO Load Regulation Vin = 3.
PAGE 6
LD1117 SERIES Table 8: Electrical Characteristics Of LD1117#30 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF unless otherwise specified) Symbol Parameter Test Conditions IO = 10 mA Min. Typ. Max. Unit 3 3.03 V 3.06 V VO Output Voltage Vin = 5 V TJ = 25°C 2.97 VO Output Voltage IO = 0 to 800 mA Vin = 4.5 to 10 V 2.94 ∆VO Line Regulation Vin = 4.5 to 12 V IO = 0 mA 1 6 mV ∆VO Load Regulation Vin = 4.
PAGE 7
LD1117 SERIES Table 10: Electrical Characteristics Of LD1117#50 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF unless otherwise specified) Symbol Parameter Test Conditions VO Output Voltage Vin = 7 V VO Output Voltage IO = 0 to 800 mA IO = 10 mA Vin = 6.5 to 15 V TJ = 25°C Min. Typ. Max. Unit 4.95 5 5.05 V 5.1 V 4.9 ∆VO Line Regulation Vin = 6.5 to 15 V IO = 0 mA 1 10 mV ∆VO Load Regulation Vin = 6.
PAGE 8
LD1117 SERIES Table 12: Electrical Characteristics Of LD1117#12C (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, R = 120 Ω between GND and OUT pins, unless otherwise specified) Symbol Parameter Test Conditions Min. Vref Reference Voltage Vin - VO= 2V IO = 10 mA Vref Reference Voltage ∆VO Line Regulation IO = 10 to 800 mA Vin - VO= 1.4 to 10 V Vin - VO = 1.5 to 13.
PAGE 9
LD1117 SERIES Table 13: Electrical Characteristics Of LD1117#18C (refer to the test circuits, TJ = -40 to 125°C, CO = 10 µF unless otherwise specified) Symbol Parameter Test Conditions Min. Typ. Max. Unit 1.8 1.84 V 1.87 V VO Output Voltage Vin = 3.8 V IO = 10 mA TJ = 25°C 1.76 VO Output Voltage IO = 0 to 800 mA Vin = 3.9 to 10 V 1.73 ∆VO Line Regulation Vin = 3.3 to 8 V IO = 0 mA 1 30 mV ∆VO Load Regulation Vin = 3.
PAGE 10
LD1117 SERIES Table 14: Electrical Characteristics Of LD1117#25C (refer to the test circuits, TJ = -40 to 125°C, CO = 10 µF unless otherwise specified) Symbol Parameter Test Conditions VO Output Voltage Vin = 4.5 V IO = 10 mA VO Output Voltage IO = 0 to 800 mA Vin = 3.9 to 10 V TJ = 25°C Min. Typ. Max. Unit 2.45 2.5 2.55 V 2.6 V 2.4 ∆VO Line Regulation Vin = 3.9 to 10 V IO = 0 mA 1 30 mV ∆VO Load Regulation Vin = 3.
PAGE 11
LD1117 SERIES Table 15: Electrical Characteristics Of LD1117#30C (refer to the test circuits, TJ = -40 to 125°C, CO = 10 µF unless otherwise specified) Symbol Parameter Test Conditions IO = 10 mA Min. Typ. Max. Unit 3 3.06 V 3.12 V VO Output Voltage Vin = 5 V TJ = 25°C 2.94 VO Output Voltage IO = 0 to 800 mA Vin = 4.5 to 10 V 2.88 ∆VO Line Regulation Vin = 4.5 to 12 V IO = 0 mA 1 30 mV ∆VO Load Regulation Vin = 4.
PAGE 12
LD1117 SERIES Table 16: Electrical Characteristics Of LD1117#33C (refer to the test circuits, TJ = -40 to 125°C, CO = 10 µF unless otherwise specified) Symbol Parameter Test Conditions Min. Typ. Max. Unit 3.3 3.36 V 3.44 V VO Output Voltage Vin = 5.3 V IO = 10 mA TJ = 25°C 3.24 VO Output Voltage IO = 0 to 800 mA Vin = 4.75 to 10 V 3.16 ∆VO Line Regulation Vin = 4.75 to 15 V IO = 0 mA 1 30 mV ∆VO Load Regulation Vin = 4.
PAGE 13
LD1117 SERIES Table 17: Electrical Characteristics Of LD1117#50C (refer to the test circuits, TJ = -40 to 125°C, CO = 10 µF unless otherwise specified) Symbol Parameter Test Conditions IO = 10 mA Min. Typ. Max. Unit 5 5.1 V 5.2 V VO Output Voltage Vin = 7 V TJ = 25°C 4.9 VO Output Voltage IO = 0 to 800 mA Vin = 6.5 to 15 V 4.8 ∆VO Line Regulation Vin = 6.5 to 15 V IO = 0 mA 1 50 mV ∆VO Load Regulation Vin = 6.
PAGE 14
LD1117 SERIES Table 18: Electrical Characteristics Of LD1117C (ADJUSTABLE) (refer to the test circuits, TJ = -40 to 125°C, CO = 10 µF unless otherwise specified) Symbol Parameter Test Conditions Min. Typ. Max. Unit 1.225 1.25 1.275 V 1.3 V 1 % Vref Reference Voltage Vref Reference Voltage ∆VO Line Regulation Vin - VO = 2 V IO = 10 mA TJ = 25°C IO = 10 to 800 mA Vin - VO= 1.4 to 10 V Vin - VO = 1.5 to 13.
PAGE 15
LD1117 SERIES Figure 6: Active Terminator for SCSI-2 BUS Figure 7: Circuit for Increasing Output Voltage Figure 8: Voltage Regulator With Reference 15/27
PAGE 16
LD1117 SERIES Figure 9: Battery Backed-up Regulated Supply 16/27
PAGE 17
LD1117 SERIES Figure 10: Post-Regulated Dual Supply LD1117 ADJUSTABLE: APPLICATION NOTE The LD1117 ADJUSTABLE has a thermal stabilized 1.25±0.012V reference voltage between the OUT and ADJ pins. IADJ is 60µA typ. (120µA max.) and ∆IADJ is 1µA typ. (5µA max.). R1 is normally fixed to 120Ω. From figure 11 we obtain: VOUT = VREF + R2 (IADJ +IR1) = VREF + R2 (IADJ +VREF /R1) = VREF (1 + R2 / R1) + R2 x IADJ.
PAGE 18
LD1117 SERIES Figure 11: Adjustable Output Voltage Application Figure 12: Adjustable Output Voltage Application with improved Ripple Rejection 18/27
PAGE 19
LD1117 SERIES SOT-223 MECHANICAL DATA mm. mils DIM. MIN. TYP A MAX. MIN. TYP. 1.8 A1 0.02 B 0.6 B1 MAX. 70.9 0.1 0.8 3.9 0.7 0.85 23.6 27.6 33.5 2.9 3 3.15 114.2 118.1 124.0 c 0.24 0.26 0.35 9.4 10.2 13.8 D 6.3 6.5 6.7 248.0 255.9 263.8 e 2.3 90.6 e1 4.6 181.1 E 3.3 3.5 3.7 129.9 137.8 145.7 H 6.7 7 7.3 129.9 137.8 145.
PAGE 20
LD1117 SERIES SO-8 MECHANICAL DATA DIM. mm. MIN. TYP inch MAX. MIN. TYP. MAX. A 1.35 1.75 0.053 0.069 A1 0.10 0.25 0.04 0.010 A2 1.10 1.65 0.043 0.065 B 0.33 0.51 0.013 0.020 C 0.19 0.25 0.007 0.010 D 4.80 5.00 0.189 0.197 E 3.80 4.00 0.150 0.157 e 1.27 0.050 H 5.80 6.20 0.228 0.244 h 0.25 0.50 0.010 0.020 L 0.40 1.27 0.016 0.050 k ddd 8˚ (max.) 0.1 0.
PAGE 21
LD1117 SERIES DPAK MECHANICAL DATA mm. inch DIM. 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 b4 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 D1 E 5.1 6.4 E1 6.6 0.252 4.7 e 0.244 0.200 0.260 0.185 2.28 0.090 e1 4.4 4.6 0.173 0.181 H 9.35 10.1 0.368 0.397 L 1 (L1) L2 L4 0.039 2.8 0.110 0.8 0.6 0.031 1 0.023 0.
PAGE 22
LD1117 SERIES TO-220 MECHANICAL DATA DIM. mm. MIN. MAX. MIN. A 4.40 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 0.107 D1 TYP inch 1.27 TYP. MAX. 0.050 E 0.49 0.70 0.019 0.027 F 0.61 0.88 0.024 0.034 F1 1.14 1.70 0.044 0.067 F2 1.14 1.70 0.044 0.067 G 4.95 5.15 0.194 0.203 G1 2.4 2.7 0.094 0.106 H2 10.0 10.40 0.393 L2 16.4 0.409 0.645 L4 13.0 14.0 0.511 0.551 L5 2.65 2.95 0.104 0.116 L6 15.25 15.75 0.600 0.
PAGE 23
LD1117 SERIES Tape & Reel SOT223 MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. 330 13.0 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 MAX. 0.504 0.512 14.4 0.519 0.567 Ao 6.73 6.83 6.93 0.265 0.269 0.273 Bo 7.32 7.42 7.52 0.288 0.292 0.296 Ko 1.78 2 0.070 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 7.9 8.0 8.1 0.311 0.315 0.319 0.
PAGE 24
LD1117 SERIES Tape & Reel SO-8 MECHANICAL DATA mm. inch DIM. MIN. A MAX. MIN. 330 13.2 TYP. MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 24/27 TYP 0.504 22.4 0.519 0.882 Ao 8.1 8.5 0.319 0.335 Bo 5.5 5.9 0.216 0.232 Ko 2.1 2.3 0.082 0.090 Po 3.9 4.1 0.153 0.161 P 7.9 8.1 0.311 0.
PAGE 25
LD1117 SERIES Tape & Reel DPAK-PPAK MECHANICAL DATA mm. inch DIM. MIN. TYP A MAX. MIN. TYP. 330 13.0 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 MAX. 0.504 0.512 22.4 0.519 0.882 Ao 6.80 6.90 7.00 0.268 0.272 0.2.76 Bo 10.40 10.50 10.60 0.409 0.413 0.417 Ko 2.55 2.65 2.75 0.100 0.104 0.105 Po 3.9 4.0 4.1 0.153 0.157 0.161 P 7.9 8.0 8.1 0.311 0.315 0.
PAGE 26
LD1117 SERIES Table 19: Revision History Date Revision 22-Sep-2004 15.0 25-Oct-2004 16.0 18-Jul-2005 25-Nov-2005 17.0 18.0 14-Dec-2005 19.0 26/27 Description of Changes Add new Part Number #12C; Typing Error: Note on table 2. Add Vref Reference Voltage on Table 12. The DPAK Mechanical Data has been updated. The TO220FM Package has been removed. The Top on Table 2 has been updated.
PAGE 27
LD1117 SERIES Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice.