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Home ›  LL16 > LD1117D33CTR-LD1117D33TR-LD1117DT12TR-LD1117DT18CTR-LD1117DT18TR-LD1117DT25CTR-LD1117DT25C-TR-LD1117DT25TR-LD1117DT25-TR-LD1117DT28-TR-LD1117DT-3.3TR-LD1117DT30TR-LD1117DT33CTR-LD1117DT33TR-LD1117DT50CTR-LD1117DT50TR-LD1117DT50-TR-LD1117DTC-R-LD1117DTR-LD1117DTTR,LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117D33CTR-LD1117D33TR-LD1117DT12TR-LD1117DT18CTR-LD1117DT18TR Fast Delivery,Good Price
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Partno Mfg Dc Qty AvailableDescript
LD1117D33CTRSTN/a7500avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117D33TRSTN/a2500avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117D33TRST进口N/a50000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT12TRSTN/a65000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT18CTRSTN/a25500avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT18CTRST,STN/a7500avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT18TRSTN/a3000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT25CTRST,STN/a87500avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT25CTRSTN/a2500avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT25CTRSTMN/a10000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT25C-TR |LD1117DT25CTRSTN/a1041avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT25TRST N/a35688avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT25-TR |LD1117DT25TRSTN/a36500avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT28-TR |LD1117DT28TRSTN/a36300avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT-3.3TR |LD1117DT33TRSTN/a887avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT30TRSTN/a750avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT33CTRIRN/a2490avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT33TRSTN/a87900avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT50CTRSTN/a36200avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT50TRSTN/a90avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT50-TR |LD1117DT50TRSTN/a26300avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DTC-R |LD1117DTCRSTN/a16696avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DTRSTMN/a2500avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DTTRSTMN/a10000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DTTRST,STN/a10000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DTTRST N/a57200avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117DT-TR |LD1117DTTRST N/a35688avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S12TRST,STN/a10000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S12TR/ |LD1117S12TRSTN/a280avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S18TRST,STN/a10000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S25CTRSTN/a55000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S25TRST N/a58588avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S25-TR |LD1117S25TRSTN/a5000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S28TRSTN/a2500avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S-3.3CTR |LD1117S33CTRSTN/a2035avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S30TRST,STN/a10000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S30TRSTMN/a10000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S33CTRST,STN/a10000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S33CTRSTN/a5000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S33CTRSTMN/a10000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S33C-TR |LD1117S33CTRSTN/a36200avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S33TRST,STN/a10000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S33-TR |LD1117S33TRSTN/a35000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S50CTRSTN/a3180avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S50C-TR |LD1117S50CTRSTN/a35000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S50TRSTN/a5000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S-50TR |LD1117S50TRSTN/a2500avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S50-TR |LD1117S50TRSTN/a35000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117SC-R |LD1117SCRSTMN/a5000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117SC-R |LD1117SCRSTN/a9800avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117STRSTMN/a10000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
LD1117S-TR |LD1117STRSTN/a35000avaiLOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS


LD1117DT33TR ,LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSElectrical Characteristics Of LD1117#25 (refer to the test circuits, T = 0 to 125°C,JC = 10 µF unle ..
LD1117DT50 ,LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSBLOCK DIAGRAMFebruary 2003 1/23LD1117 SERIES
LD1117DT50CTR ,LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORSLD1117SERIESLOW DROP FIXED AND ADJUSTABLEPOSITIVE VOLTAGE REGULATORS

LD1117D33CTR-LD1117D33TR-LD1117DT12TR-LD1117DT18CTR-LD1117DT18TR-LD1117DT25CTR-LD1117DT25C-TR-LD1117DT25TR-LD1117DT25-TR-LD1117DT28-TR-LD1117DT-3.3TR-LD1117DT30TR-LD1117DT33CTR-LD1117DT33TR-LD1117DT50CTR-LD1117DT50TR-LD1117DT50-TR-LD1117DTC-R-LD1117DTR-LD1117DTTR
LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS
1/28October 2004 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.)
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
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

Rev. 16
LD1117 SERIES
2/28
Figure 2: Pin Connection (top view)

NOTE: The TAB is connected to the VOUT.
Table 1: Order Codes

(*) Available on request
LD1117 SERIES
3/28
Table 2: Absolute Maximum Ratings

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.
Table 3: Thermal Data
Figure 3: Application Circuit (FOR 1.2 V)
Figure 4: Application Circuit (FOR OTHER FIXED OUTPUT VOLTAGES)
LD1117 SERIES
4/28
Table 4: Electrical Characteristics Of LD1117#12 (refer to the test circuits, T
J = 0 to 125°C,O = 10 µF, R = 120 Ω between GND and OUT pins, unless otherwise specified)
Table 5: Electrical Characteristics Of LD1117#18 (refer to the test circuits, TJ = 0 to 125°C,

CO = 10 µF unless otherwise specified)
LD1117 SERIES
5/28
Table 6: Electrical Characteristics Of LD1117#25 (refer to the test circuits, T
J = 0 to 125°C,
CO = 10 µF unless otherwise specified)
Table 7: Electrical Characteristics Of LD1117#28 (refer to the test circuits, TJ = 0 to 125°C,

CO = 10 µF unless otherwise specified)
LD1117 SERIES
6/28
Table 8: Electrical Characteristics Of LD1117#30 (refer to the test circuits, T
J = 0 to 125°C,O = 10 µF unless otherwise specified)
Table 9: Electrical Characteristics Of LD1117#33 (refer to the test circuits, T
J = 0 to 125°C,
CO = 10 µF unless otherwise specified)
LD1117 SERIES
7/28
Table 10: Electrical Characteristics Of LD1117#50 (refer to the test circuits, T
J = 0 to 125°C,O = 10 µF unless otherwise specified)
Table 11: Electrical Characteristics Of LD1117 (ADJUSTABLE) (refer to the test circuits,
J = 0 to 125°C, CO = 10 µF unless otherwise specified)
LD1117 SERIES
8/28
Table 12: Electrical Characteristics Of LD1117#12C (refer to the test circuits, T
J = 0 to 125°C,O = 10 µF, R = 120 Ω between GND and OUT pins, unless otherwise specified)
LD1117 SERIES
9/28
Table 13: Electrical Characteristics Of LD1117#18C (refer to the test circuits, T
J = -40 to 125°C,O = 10 µF unless otherwise specified)
LD1117 SERIES
10/28
Table 14: Electrical Characteristics Of LD1117#25C (refer to the test circuits, T
J = -40 to 125°C,O = 10 µF unless otherwise specified)
LD1117 SERIES
11/28
Table 15: Electrical Characteristics Of LD1117#30C (refer to the test circuits, T
J = -40 to 125°C,O = 10 µF unless otherwise specified)
LD1117 SERIES
12/28
Table 16: Electrical Characteristics Of LD1117#33C (refer to the test circuits, T
J = -40 to 125°C,O = 10 µF unless otherwise specified)
LD1117 SERIES
13/28
Table 17: Electrical Characteristics Of LD1117#50C (refer to the test circuits, T
J = -40 to 125°C,O = 10 µF unless otherwise specified)
LD1117 SERIES
14/28
Table 18: Electrical Characteristics Of LD1117C (ADJUSTABLE) (refer to the test circuits,
J = -40 to 125°C, CO = 10 µF unless otherwise specified)
TYPICAL APPLICATIONS
Figure 5: Negative Supply
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