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PDF TCL1117-5.00CDB Data sheet ( Hoja de datos )

Número de pieza TCL1117-5.00CDB
Descripción 800mA LOW DROPOUT POSITIVE REGULATORS ADJUSTABLE AND FIXED 2.85V/ 3.30V/ 5.00V
Fabricantes TelCom Semiconductor 
Logotipo TelCom Semiconductor Logotipo



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800mA LOW DROPOUT POSITIVE REGULATORS
ADJUSTABLE AND FIXED 2.85V, 3.30V, 5.00V
PRELIMINARY INFORMATION
TTCCLL11111177
TCTCLL11111177--22..8855
TCTCLL11111177--33..30
TCTCLL11111177--55..00
800mA LOW DROPOUT POSITIVE REGULATORS
ADJUSTABLE AND FIXED 2.85V, 3.30V, 5.00V
FEATURES
s Space-saving SOT-223 Package
s Pin Compatible with Older Adjustable 3 Terminal
Regulators
s Adjustable or Fixed Voltages of 2.85V, 3.30V or 5.00V
s High Output Current ..................................... 800mA
s Low Dropout Voltage ............ 1.2V at IOUT = 800mA
s Guaranteed Dropout Voltage at Multiple Current
Levels
s Line Regulation (Max) ...................................... 0.2%
s Load Regulation (Max) ..................................... 0.4%
APPLICATIONS
s Active SCSI Terminators
s High Efficiency Linear Regulators
s Post Regulators for Switching Supplies
s Battery Chargers
s 5V - 3.3V Linear Regulators
ORDERING INFORMATION
Part Number*
Package
Part Marking
TCL1117-ADJCDB
SOT-223-3
1117
TCL1117-2.85CDB
SOT-223-3
11172
TCL1117-3.30CDB
SOT-223-3
11173
TCL1117-5.00CDB
SOT-223-3
11175
TCL1117-ADJCEB
DDPAK-3
TCL1117-2.85CEB
DDPAK-3
TCL1117-3.30CEB
DDPAK-3
TCL1117-5.00CEB
DDPAK-3
*Ambient temperature range is determined by maximum operating
power dissipation and a maximum die temperature of 125°C (see Power
Dissipation and Thermal Design Section).
TYPICAL APPLICATION
GENERAL DESCRIPTION
The TCL1117 is a low-dropout positive voltage regula-
tor (LDO) with 800mA output current capability. It is available
in fixed and adjustable output voltage versions, 2.85V (ac-
tive SCSI terminators), 3.30V and 5.00V. Output/reference
voltage accuracy is guaranteed to ±1.0%. Over-current
protection is integrated onto the chip. Dropout is specified
at 1.2V maximum at full rated output current and less than
1.0V at low loads (<100mA). The SOT-223 package makes
the TCL1117 especially attractive for tight physical layouts.
For stability, a 10µF output capacitor is required. The
TCL1117 is an NPN-based design which has significantly
lower unused quiescent current than similar PNP-based
regulators.
PIN CONFIGURATIONS
SOT-223
3-Lead Package
FRONT VIEW
DDPAK-3
FRONT VIEW
TAB IS VOUT
IN
OUT
ADJ/GND
123
4.75V to 5.25V
IN
10µF
TCL1117-5.00 OUT
GND
22µF
110
110
110
18 to 27
LINES
Active Terminator for SCSI-2 Bus
TCL1117-05 6/5/97 TelCom Semiconductor reserves the right to make changes in the circuitry an1d specifications of its devices.

1 page




TCL1117-5.00CDB pdf
800mA LOW DROPOUT POSITIVE REGULATORS
ADJUSTABLE AND FIXED 2.85V, 3.30V, 5.00V
PRELIMINARY INFORMATION
TCL1117
TCL1117-2.85
TCL1117-3.30
TCL1117-5.00
TYPICAL APPLICATIONS
1.2V-10V Adjustable Regulator
5V Regulator with Shutdown
VIN IN TCL1117 OUT
ADJ
+ C1*
10µF
R2
1k
R1
121
+
VOUT**
C2
100µF
VIN
+
10µF
SHDN
1k
IN TCL1117 OUT
ADJ
2N3904
1k
5V
121
1%
+
100µF
365
1%
* NEEDED IF DEVICE IS FAR FROM FILTER CAPACITORS
( )** VOUT = 1.25V 1+ R2
R1
Remote Sensing
VIN IN TCL1117 OUT
ADJ
+
10µF
Rp
(MAX DROP 300mV)
+
100µF
25
121
365
VIN
6 7 2
LM301A
1+
3
8
4
1k
100pF
5µF
+
RETURN
25
OUTPUT
5V
RL
RETURN
Adjusting Output Voltage of Fixed Regulators
VIN > 12V
+
10µF
IN TCL1117-5.00 OUT
GND
5V TO 10V
+
100µF
VIN
+
10µF*
1k
*OPTIONAL IMPROVES RIPPLE REJECTION
TCL1117-05 6/5/97
5
Battery Charger
IN TCL1117 OUT
1.25V
ADJ
IF
VOUT
RS
R1
( )R2
VOUT – 1.25V
IF =
1+ R2
R1
( )– RS
1+ R2
R1
( )IF
VOUT
=
– RS
1
1+ R2
R1

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