 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| LD1117A SERIES LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS s s s s s s s s s s LOW DROPOUT VOLTAGE (1.15V TYP. @ IOUT = 1A, 25C) VERY LOW QUIESCENT CURRENT (5 mA TYP. @ 25C) OUTPUT CURRENT UP TO 1A FIXED OUTPUT VOLTAGE OF: 1.8V, 2.5V, 2.85V, 3.3V, 5.0V ADJUSTABLE VERSION AVAILABILITY (Vrel = 1.25V) INTERNAL CURRENT AND THERMAL LIMIT ONLY 10 F FOR STABILITY AVAILABLE IN 2% (AT 25C) AND 4% IN FULL TEMPERATURE RANGE HIGH SUPPLY VOLTAGE REJECTION: (80dB TYP. AT 25C) TEMPERATURE RANGE: 0C TO 125C SOT-223 TO-220 DPAK DESCRIPTION The LD1117A is a LOW DROP Voltage Regulator able to provide up to 1A of Output Current, available even in adjustable version (Vref=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 and TO-220. The surface mount packages optimize the thermal characteristics even offering a relevant space saving effect. High efficiency is assured by NPN pass transistor. Only a very common 10F minimum capacitor is needed for stability. Only chip trimming allows the regulator to reach a very tight output voltage tolerance, within 2% at 25 C. BLOCK DIAGRAM January 2003 1/16 LD1117A SERIES ABSOLUTE MAXIMUM RATINGS Symbol VIN Ptot Tstg Top DC Input Voltage Power Dissipation Storage Temperature Range Operating Junction Temperature Range Parameter Value 10 12 -40 to +150 0 to +125 Unit V W C C Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied. Over the above suggested Max Power Dissipation a Short Circuit could definitively damage the device. THERMAL DATA Symbol Rthj-case Rthj-amb Parameter Thermal Resistance Junction-case Thermal Resistance Junction-ambient TO-220 3 50 SOT-223 15 DPAK 8 Unit C/W C/W APPLICATION CIRCUIT (FOR OTHER FIXED OUTPUT VOLTAGES) 2/16 LD1117A SERIES CONNECTION DIAGRAM (top view) DPAK SOT-223 TO-220 NOTE: The TAB is connected to the VOUT. ORDERING CODES SOT-223 LD1117AS18TR LD1117AS25TR LD1117AS28TR LD1117AS33TR LD1117AS50TR LD1117AST-R DPAK LD1117ADT18TR LD1117ADT25TR LD1117ADT28TR LD1117ADT33TR LD1117ADT50TR LD1117ADT-R TO-220 LD1117AV18 LD1117AV25 LD1117AV28 LD1117AV33 LD1117AV50 LD1117AV OUTPUT VOLTAGE 1.8 V 2.5 V 2.85 V 3.3 V 5V ADJUSTABLE FROM 1.25 TO 15 V 3/16 LD1117A SERIES ELECTRICAL CHARACTERISTICS OF LD1117A#18 (refer to the test circuits, TJ = 0 to 125C, CO = 10 F, CI = 10 F unless otherwise specified) Symbol VO VO VO VO VO VO VI Id IO eN SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Temperature Stability Long Term Stability Operating Input Voltage Quiescent Current Output Current Output Noise Voltage Supply Voltage Rejection Dropout Voltage 1000 hrs, TJ = 125C IO = 100 mA VI 8 V IO = 0 mA 1000 100 60 80 1 1.05 1.15 30ms Pulse 0.08 1.10 1.15 1.30 0.2 %/W VI - VO = 5 V TJ = 25C B =10Hz to 10KHz TJ = 25C IO = 40 mA f = 120Hz VI - VO = 3 V Vripple = 1 VPP IO = 100 mA IO = 500 mA IO = 1 A VO(pwr) Thermal Regulation Ta = 25C VI = 3.8 V IO = 0 to 1 A VI = 3.3 to 8 V VI = 3.3 V Test Conditions IO = 10 mA TJ = 25C VI = 3.3 to 8 V IO = 0 mA IO = 0 to 1 A Min. 1.764 1.728 1 1 0.5 0.3 10 5 10 Typ. 1.8 Max. 1.836 1.872 6 10 Unit V V mV mV % % V mA mA V dB V ELECTRICAL CHARACTERISTICS OF LD1117A#25 (refer to the test circuits, TJ = 0 to 125C, CO = 10 F, CI = 10 F unless otherwise specified) Symbol VO VO VO VO VO VO VI Id IO eN SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Temperature Stability Long Term Stability Operating Input Voltage Quiescent Current Output Current Output Noise Voltage Supply Voltage Rejection Dropout Voltage 1000 hrs, TJ = 125C IO = 100 mA VI 10 V IO = 0 mA 1000 60 VI - VO = 5 V TJ = 25C B =10Hz to 10KHz TJ = 25C IO = 40 mA f = 120Hz VI - VO = 3 V Vripple = 1 VPP IO = 100 mA IO = 500 mA IO = 1 A VO(pwr) Thermal Regulation Ta = 25C 30ms Pulse VI = 4.5 V IO = 0 to 1 A VI = 3.9 to 8 V VI = 3.9 V Test Conditions IO = 10 mA TJ = 25C VI = 3.9 to 8 V IO = 0 mA IO = 0 to 1 A Min. 2.45 2.4 1 1 0.5 0.3 10 5 1200 100 80 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2 %/W 10 Typ. 2.5 Max. 2.55 2.6 6 10 Unit V V mV mV % % V mA mA V dB V 4/16 LD1117A SERIES ELECTRICAL CHARACTERISTICS OF LD1117A#28 (refer to the test circuits, TJ = 0 to 125C, CO = 10 F, CI = 10 F unless otherwise specified) Symbol VO VO VO VO VO VO VI Id IO eN SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Temperature Stability Long Term Stability Operating Input Voltage Quiescent Current Output Current Output Noise Voltage Supply Voltage Rejection Dropout Voltage 1000 hrs, TJ = 125C IO = 100 mA VI 10 V IO = 0 mA 1000 60 VI - VO = 5 V TJ = 25C B =10Hz to 10KHz TJ = 25C IO = 40 mA f = 120Hz VI - VO = 3 V Vripple = 1 VPP IO = 100 mA IO = 500 mA IO = 1 A VO(pwr) Thermal Regulation Ta = 25C 30ms Pulse VI = 4.85 V IO = 0 to 1 A VI = 4.25 to 8 V VI = 4.25 V Test Conditions IO = 10 mA TJ = 25C VI = 4.25 to 10 V IO = 0 mA IO = 0 to 1 A Min. 2.793 2.736 1 1 0.5 0.3 10 4.5 1200 100 75 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2 %/W 10 Typ. 2.85 Max. 2.907 2.964 6 10 Unit V V mV mV % % V mA mA V dB V ELECTRICAL CHARACTERISTICS OF LD1117A#33 (refer to the test circuits, TJ = 0 to 125C, CO = 10 F, CI = 10 F unless otherwise specified) Symbol VO VO VO VO VO VO VI Id IO eN SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Temperature Stability Long Term Stability Operating Input Voltage Quiescent Current Output Current Output Noise Voltage Supply Voltage Rejection Dropout Voltage 1000 hrs, TJ = 125C IO = 100 mA VI 10 V IO = 0 mA 1000 60 VI - VO = 5 V TJ = 25C B =10Hz to 10KHz TJ = 25C IO = 40 mA f = 120Hz VI - VO = 3 V Vripple = 1 VPP IO = 100 mA IO = 500 mA IO = 1 A VO(pwr) Thermal Regulation Ta = 25C 30ms Pulse VI = 5.3 V IO = 0 to 1 A VI = 4.75 to 8 V VI = 4.75 V Test Conditions IO = 10 mA TJ = 25C VI = 4.75 to 10 V IO = 0 mA IO = 0 to 1 A Min. 3.234 3.168 1 1 0.5 0.3 10 5 1200 100 75 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2 %/W 10 Typ. 3.3 Max. 3.366 3.432 6 10 Unit V V mV mV % % V mA mA V dB V 5/16 LD1117A SERIES ELECTRICAL CHARACTERISTICS OF LD1117A#50 (refer to the test circuits, TJ = 0 to 125C, CO = 10 F, CI = 10 F unless otherwise specified) Symbol VO VO VO VO VO VO VI Id IO eN SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Temperature Stability Long Term Stability Operating Input Voltage Quiescent Current Output Current Output Noise Voltage Supply Voltage Rejection Dropout Voltage 1000 hrs, TJ = 125C IO = 100 mA VI 10 V IO = 0 mA 1000 60 VI - VO = 5 V TJ = 25C B =10Hz to 10KHz TJ = 25C IO = 40 mA f = 120Hz VI - VO = 3 V Vripple = 1 VPP IO = 100 mA IO = 500 mA IO = 1 A VO(pwr) Thermal Regulation Ta = 25C 30ms Pulse VI = 7 V IO = 0 to 1 A VI = 6.4 to 8 V VI = 6.4 V Test Conditions IO = 10 mA TJ = 25C VI = 6.4 to 10 V IO = 0 mA IO = 0 to 1 A Min. 4.9 4.8 1 1 0.5 0.3 10 5 1200 100 80 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2 %/W 10 Typ. 5 Max. 5.1 5.2 6 10 Unit V V mV mV % % V mA mA V dB V ELECTRICAL CHARACTERISTICS OF LD1117A (ADJUSTABLE) (refer to the test circuits, TJ = 0 to 125C, CO = 10 F, CI = 10 F unless otherwise specified) Symbol VO VO VO VO VO VO VI Id IO eN SVR VD Parameter Output Voltage Output Voltage Line Regulation Load Regulation Temperature Stability Long Term Stability Operating Input Voltage Quiescent Current Output Current Output Noise Voltage Supply Voltage Rejection Dropout Voltage 1000 hrs, TJ = 125C IO = 100 mA VI 8 V IO = 0 mA 1000 60 VI - VO = 5 V TJ = 25C B =10Hz to 10KHz TJ = 25C IO = 40 mA f = 120Hz VI - VO = 3 V Vripple = 1 VPP IO = 100 mA IO = 500 mA IO = 1 A VO(pwr) Thermal Regulation Ta = 25C 30ms Pulse VI = 5.3 V IO = 0 to 1 A VI = 2.75 to 8 V VI = 2.75 V Test Conditions IO = 10 mA TJ = 25C VI = 2.75 to 10 V IO = 0 mA IO = 0 to 1 A Min. 1.225 1.2 1 1 0.5 0.3 10 5 1200 100 80 1 1.05 1.15 0.08 1.10 1.15 1.30 0.2 %/W 10 Typ. 1.25 Max. 1.275 1.3 6 10 Unit V V mV mV % % V mA mA V dB V 6/16 LD1117A SERIES TYPICAL APPLICATIONS Figure 1 : Negative Supply Figure 2 : Active Terminator for SCSI-2 BUS Figure 3 : Circuit for Increasing Output Voltage 7/16 LD1117A SERIES Figure 4 : Voltage Regulator With Reference Figure 5 : Battery Backed-up Regulated Supply 8/16 LD1117A SERIES Figure 6 : Post-Regulated Dual Supply 9/16 LD1117A SERIES LD1117A ADJUSTABLE: APPLICATION NOTE The LD1117A ADJUSTABLE has a thermal stabilized 1.250.012V reference voltage between the OUT and ADJ pins. IADJ is 60A typ. (120A max.) and IADJ is 1A typ. (5A max.). R1 is normally fixed to 120. From figure 7 we obtain: VOUT = VREF + R2 (IADJ + IR1) = VREF + R2 (IADJ +VREF /R1) = VREF (1 + R2 / R1) + R2 x IADJ. In normal application R2 value is in the range of few Kohm, so the R2 x IDJ product could not be considered in the VOUT calculation; then the above expression becomes: VOUT = 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 negative Load pin. Ripple rejection can be improved by introducing a 10F electrolytic capacitor placed in parallel to the R2 resistor (see Fig.8). Figure 7 : Adjustable Output Voltage Application Figure 8 : Adjustable Output Voltage Application with improved Ripple Rejection 10/16 LD1117A SERIES SOT-223 MECHANICAL DATA mm. DIM. MIN. A A1 B B1 c D e e1 E H V 3.3 6.7 0.02 0.6 2.9 0.24 6.3 0.7 3 0.26 6.5 2.3 4.6 3.5 7 3.7 7.3 10 129.9 129.9 TYP MAX. 1.8 0.1 0.85 3.15 0.35 6.7 0.8 23.6 114.2 9.4 248.0 27.6 118.1 10.2 255.9 90.6 181.1 137.8 137.8 145.7 145.7 10 MIN. TYP. MAX. 70.9 3.9 33.5 124.0 13.8 263.8 mils 0046067/H 11/16 LD1117A SERIES DPAK MECHANICAL DATA mm. DIM. MIN. A A1 A2 B B2 C C2 D E G H L2 L4 0.6 2.2 0.9 0.03 0.64 5.2 0.45 0.48 6 6.4 4.4 9.35 0.8 1 0.023 TYP MAX. 2.4 1.1 0.23 0.9 5.4 0.6 0.6 6.2 6.6 4.6 10.1 MIN. 0.086 0.035 0.001 0.025 0.204 0.017 0.019 0.236 0.252 0.173 0.368 0.031 0.039 TYP. MAX. 0.094 0.043 0.009 0.035 0.212 0.023 0.023 0.244 0.260 0.181 0.397 inch 0068772-B 12/16 LD1117A SERIES TO-220 MECHANICAL DATA DIM. A C D D1 E F F1 F2 G G1 H2 L2 L4 L5 L6 L7 L9 DIA. 13.0 2.65 15.25 6.2 3.5 3.75 0.49 0.61 1.14 1.14 4.95 2.4 10.0 16.4 14.0 2.95 15.75 6.6 3.93 3.85 0.511 0.104 0.600 0.244 0.137 0.147 mm. MIN. 4.40 1.23 2.40 1.27 0.70 0.88 1.70 1.70 5.15 2.7 10.40 0.019 0.024 0.044 0.044 0.194 0.094 0.393 0.645 0.551 0.116 0.620 0.260 0.154 0.151 TYP MAX. 4.60 1.32 2.72 MIN. 0.173 0.048 0.094 0.050 0.027 0.034 0.067 0.067 0.203 0.106 0.409 inch TYP. MAX. 0.181 0.051 0.107 P011C 13/16 LD1117A SERIES Tape & Reel SOT223 MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.73 7.32 1.78 3.9 7.9 4.0 8.0 6.83 7.42 12.8 20.2 60 14.4 6.93 7.52 2 4.1 8.1 0.265 0.288 0.070 0.153 0.311 0.157 0.315 0.269 0.292 13.0 TYP MAX. 180 13.2 0.504 0.795 2.362 0.567 0.273 0.296 0.078 0.161 0.319 0.512 MIN. TYP. MAX. 7.086 0.519 inch 14/16 LD1117A SERIES Tape & Reel DPAK-PPAK MECHANICAL DATA mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.80 10.40 2.55 3.9 7.9 6.90 10.50 2.65 4.0 8.0 12.8 20.2 60 14.4 7.00 10.60 2.75 4.1 8.1 0.268 0.409 0.100 0.153 0.311 0.272 0.413 0.104 0.157 0.315 13.0 TYP MAX. 180 13.2 0.504 0.795 2.362 0.567 0.2.76 0.417 0.105 0.161 0.319 0.512 MIN. TYP. MAX. 7.086 0.519 inch 15/16 LD1117A 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. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a registered trademark of STMicroelectronics (c) 2003 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. (c) http://www.st.com 16/16 |
Price & Availability of LD1117AXX50
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |