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Part: LD1117XX18C
Category:
Power Management
-> Regulators
-> Voltage Regulators
Description: Low Drop Fixed And Adjustable Positive Voltage Regulators
Company: ST Microelectronics, Inc.
Datasheet: Download LD1117XX18C datasheet File size : 61 kB
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Datasheet text preview:
LD1117 SERIES
LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
s s
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LOW DROPOUT VOLTAGE (1V TYP.) 2.85V DEVICE PERFORMAN CES ARE SUITABLE FOR SCSI-2 ACTIVE TERMINATION OUTPUT CURR ENT 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.)
TO-220FM
TO-220
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, TO-220 and TO-220FM. The SOT-223 and DPAK surface m oun t pac k ages optimize the thermal characteristics even offering a relevant space saving effect. High efficiency is assured by NPN B L OC K D I A GR A M
DPAK
SOT-223
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 10”F 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.
October 2003
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LD1117 SERIES
AB SOLUTE MAXIMUM RATINGS
Symbol VIN Ptot Tstg Top DC Input Voltage Power Dissipation Storage Temperature Range Operating Junction Temperature Range for C Version for standard Version ParameterČ Value 15 12 -40 to +150 -40 to +125 0 to +125 Unit V W °C °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.
THERMA L DATA
Symbol Parameter SOT-223 15 SO-8 20 DPAK 8 TO-220 3 50 TO-220FM 4 60 Unit °C/W °C/W
Rthj-case Thermal Resistance Junction-case Rthj-amb Thermal Resistance Junction-ambient
APPLICATION CIRCUIT (FOR 1.2 V)
APPLICATION CIRCUIT (FOR OTHER FIXED OUTPUT VOLTAGES)
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LD1117 SERIES
CONNECTION DIAGRAM (top view)
SOT-223
S O- 8
TO-220FM
TO-220
DP AK
NOTE: The TAB is connected to the VOUT.
ORDERING CODES
SOT-223 LD1117S12 LD1117S18 LD1117S18C LD1117S25 LD1117S25C LD1117S28 LD1117S30 LD1117S30C LD1117S33 LD1117S33C LD1117S50 LD1117S50C LD1117S SO-8 LD1117D12 (*) LD1117D18 LD1117D18C LD1117D25 LD1117D25C LD1117D28 LD1117D30 LD1117D30C LD1117D33 LD1117D33C LD1117D50 LD1117D50C LD1117D DPAK LD1117DT12 LD1117DT18 LD1117DT18C LD1117DT25 LD1117DT25C LD1117DT28 LD1117DT30 LD1117DT30C LD1117DT33 LD1117DT33C LD1117DT50 LD1117DT50C LD1117DT TO-220 LD1117V12 (*) LD1117V18 LD1117V18C LD1117V25 LD1117V25C LD1117V28 LD1117V30 LD1117V30C LD1117V33 LD1117V33C LD1117V50 LD1117V50C LD1117V TO-220FM LD1117F12 (*) LD1117F18 LD1117F18C LD1117F25 LD1117F25C LD1117F28 LD1117F30 LD1117F30C LD1117F33 LD1117F33C LD1117F50 LD1117F50C LD1117F OUTPUT VOLTAGE 1.2 V 1.8 V 1.8 V 2.5 V 2.5 V 2.85 V 3V 3V 3.3 V 3.3 V 5V 5V ADJUSTABLE FROM 1.25 TO 15V ADJUSTABLE FROM 1.25 TO 15V 3/24
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