UNISONIC TECHNOLOGIES CO.,LTD.
LD1117/A
LOW DROP FIXED AND
ADJUSTABLE POSITIVE
VOLTAGE REGULATORS
DESCRIPTION
The UTC LD1117/A is a low dropout, 3-terminals
positive voltage regulator designed to provide output current
up to 800mA/1A, even available in adjustable version
(Vref=1.25V). Regarding fixed versions, 1.5V, 1.8V, 2.5V,
2.85V, 3.0V, 3.3V, 3.6V and 5.0V are offered. The 2.85V
type is ideal for SCSI-2 lines active termination. Various
surface mount packages optimize the thermal characteristics
even offering a relevant space saving effect, including
SOT-223, TO-263, TO-252and SOP-8.
High efficiency is assured by NPN pass transistor. In
fact, in the case, unlike than PNP one, the Quiescent Current
flows mostly into the load. Only a very common 10µF
minimum capacitor is needed for stability. It allows very tight
output voltage tolerance within
±1%
at 25°C by chip trim.
Moreover, the ADJUSTABLE version is pin to pin compatible
with the other standard Adjustable voltage regulators
maintaining the better performances in terms of Drop and
Tolerance.
1
1
Linear Integrated Circuit
1
SOT-223
SOP-8
TO-220
TO-252
1
1
TO-263
TO-263-3
*Pb-free plating product number:
-
LD1117L-xx
-
LD1117AL-xx
FEATURES
*Low dropout voltage (1V Typ.)
*2.85V device performances are suitable for SCSI-2 active
termination
*Output current up to 0.8A/1.0A
*Adjustable version availability (Vref=1.25V)
*Internal current and thermal limit.
*Available in
±1%(at
25°C) and 2% in all temperature range
*Supply voltage rejection: 75dB (TYP)
ORDERING INFORMATION
Order Number
Package
Normal
Lead Free Plating
LD1117
①
-xx-AA3-
②
-
③
LD1117
①
L-xx-AA3-
②
-
③
SOT-223
LD1117
①
-xx-TA3-
②
-
③
LD1117
①
L-xx-TA3-
②
-
③
TO-220
LD1117
①
-xx-TN3-
②
-
③
LD1117
①
L-xx-TN3-
②
-
③
TO-252
LD1117
①
-xx-TQ2-
②
-
③
LD1117
①
L-xx-TQ2-
②
-
③
TO-263
LD1117
①
-xx-TQ3-
②
-
③
LD1117
①
L-xx-TQ3-
②
-
③
TO-263-3
LD1117
①
-xx-S08-
②-③
LD1117
①
L-xx-S08-
②
-
③
SOP-8
Note: 1.
①:
Current code: Blank: 800mA A: 1A
2. Pin assignment: I:Vin O:Vout G:GND x:NC
3. xx: Output Voltage, refer to Marking Information.
②
③
Pin Assignment
A: GOI
B: OGI
C: GIO
D: IGO
GOOIxOOx
Packing
R: Tape Reel
T: Tube
Example: LD1117L-285-AA3-B-T
800mA, 2.85V, SOT-223 package, Pin1:Vout, Pin2:Ground, Pin3:Vin, packing by Tube.
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co.,LTD.
1
QW-R102-006,M
京公网安备 11010802033920号
EEWORLD
