LD1117 STMICROELECTRONICS | Alldatasheet
Document overview
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- PDF pages: 38
Technical content
Datasheet sections
- 1 Pin configuration
- 2 Maximum ratings
- 3 Schematic application
- 4 Electrical characteristics
- 5 Typical application
- 6 LD1117 Adjustable: Application note
- 7 Package mechanical data
- 8 Order code
- 9 Revision history
December 2006 Rev. 20 1/38 LD1117 series Low drop fixed and adjustable positive voltage regulators Feature summary ■ 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, ■ 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.)
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, 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. DPAK SO-8 TO-220 SOT-223 Block diagram
1 Pin configuration
Note: The TAB is connected to the V OUT. Figure 1. Pin connections (top view)
2 Maximum ratings
Table 1. Absolute maximum ratings Table 2. Thermal Data
3 Schematic application
Figure 2. Application circuit (for 1.2V) Figure 3. Application circuit (for other fixed output voltages)
4 Electrical characteristics
Table 3. Electrical characteristics of LD1117#12 pins, unless otherwise specified).
Table 4. Electrical characteristics of LD1117#18 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, unless otherwise specified). Table 5. Electrical characteristics of LD1117#25 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, unless otherwise specified).
Table 6. Electrical characteristics of LD1117#28 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, unless otherwise specified).
Table 7. Electrical characteristics of LD1117#30 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, unless otherwise specified).
Table 8. Electrical characteristics of LD1117#33 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, unless otherwise specified).
Table 9. Electrical characteristics of LD1117#50 (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, unless otherwise specified).
Table 10. Electrical characteristics of LD1117 (Adjustable) (refer to the test circuits, TJ = 0 to 125°C, CO = 10 µF, unless otherwise specified).
Table 11. Electrical characteristics of LD1117#12C pins, unless otherwise specified).
Table 12. Electrical characteristics of LD1117#18C (refer to the test circuits, TJ = -40 to 125°C, CO = 10 µF, unless otherwise specified).
Table 13. Electrical characteristics of LD1117#25C (refer to the test circuits, TJ = -40 to 125°C, CO = 10 µF, unless otherwise specified).
Table 14. Electrical characteristics of LD1117#30C (refer to the test circuits, TJ = -40 to 125°C, CO = 10 µF, unless otherwise specified).
Table 15. Electrical characteristics of LD1117#33C (refer to the test circuits, TJ = -40 to 125°C, CO = 10 µF, unless otherwise specified).
Table 16. Electrical characteristics of LD1117#50C (refer to the test circuits, TJ = -40 to 125°C, CO = 10 µF, unless otherwise specified).
Table 17. Electrical characteristics of LD1117C (Adjustable) (refer to the test circuits, TJ = -40 to 125°C, CO = 10 µF, unless otherwise specified).
5 Typical application
Figure 4. Negative supply Figure 5. Active terminator for SCSI-2 BUS Figure 6. Circuit for increasing output voltage
Figure 9. Post-regulated dual supply
6 LD1117 Adjustable: Application note
placed in parallel to the R2 resistor (see Fig. 11). Figure 10. Adjustable output voltage application Figure 11. Adjustable output voltage appli cation with improved ripple rejection
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 on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOP ACK is an ST trademark. ECOPACK specifications are available at: www.st.com.
LD1117 series Package mechanical data DIM. mm. mils A 1.8 70. 9 A1 0.02 0.1 0.8 3. 9 e2 . 3 90.6 e1 4.6 181.1 V 10° 10° SOT-223 MECHANICAL DATA 0046067/H
DIM. mm. inch 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 ˚ (max.) ddd 0.1 0.04 SO-8 MECHANICAL DATA 0016023/C
Figure 12. DRAWING DIMENSION DPAK (TYPE STD-ST)
Figure 13. DRAWING DIMENSION DPAK (TYPE FUJITSU-SUBCON.)
Figure 14. DRAWING DIMENSION DPAK (TYPE IDS-SUBCON.)
compatible with the ST's package suggested footprint. Table 18. DPAK MECHANICAL DATA
Figure 15. DPAK FOOTPRINT RECOMMENDED DATA Table 19. FOOTPRINT DATA
DIM. mm. inch 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 1.27 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 0.409 L2 16.4 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 0.620 L7 6.2 6.6 0.244 0.260 L9 3.5 3.93 0.137 0.154 TO-220 MECHANICAL DATA P011C
LD1117 series Package mechanical data DIM. mm. inch A 330 12.992 D2 0 . 2 0 . 7 9 5 N6 0 2 . 3 6 2 T 14.4 0.567 Ko 1.78 2 0.070 0.078 Tape & Reel SOT223 MECHANICAL DATA
DIM. mm. inch A 330 12.992 C 12.8 13.2 0.504 0.519 D 20.2 0.795 N 60 2.362 T 22.4 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 0.319 Tape & Reel SO-8 MECHANICAL DATA
LD1117 series Package mechanical data DIM. mm. inch A 330 12.992 D 20.2 0.795 N 60 2.362 T 22.4 0.882 Tape & Reel DPAK-PPAK MECHANICAL DATA
8 Order code
Table 20. Order code
1.25 TO 15V
9 Revision history
Table 21. Document revision history 22-Sep-2004 15 Add new Part Number #12C; T yping Error: Note on table 2. 25-Oct-2004 16 Add V ref Reference Voltage on T able 12. 18-Jul-2005 17 The DPAK Mechanical Data has been updated. 25-Nov-2005 18 The TO220FM Package has been removed. 14-Dec-2005 19 The T op on Table 2 has been updated. 06-Dec-2006 20 DPAK mechanical data has been updated and add footprint data.