Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
1.0Amp Low Dropout Voltage Regulator
B1117
Adjustable & Fix (0.40Volt Dropout)
Pin Connection
Ordering Information
Devices
Package
Temp.
B1117D-X
TO-252
0
°C to 125 °C
B1117N-X
TO-223
0
°C to 125 °C
B1117T-X
TO-220
0
°C to 125 °C
B1117S-X
TO-263
0
°C to 125 °C
B1117M-X
SO-8
0
°C to 125 °C
2
1
3
4
8
7
6
5
8-Pin Surface Mount
Top View
ADJ
OUT
OUT
N.C.
IN
NC
2
1
3
4
8
7
6
5
8-Pin Surface Mount
Top View
IN
IN
2
1
3
4
8
7
6
5
8-Pin Surface Mount
Top View
ADJ
OUT
OUT
N.C.
IN
NC
2
1
3
4
8
7
6
5
8-Pin Surface Mount
Top View
IN
IN
Description
The Bay Linear B1117 is a three terminal positive NPN
regulator offered as adjustable or fix voltages of 1.5V,1.8V,
2.5V, 2.85V, 3.3V, and 5Volts. The output current has a
capability up to
1.0Amp,. This device has been optimized for
low voltage where transient response and minimum input
voltage are critical. The 2.85V version is designed specifically
to be used in active terminators for SCSI bus.
Current limit is trimmed to ensure specified output current and
controlled short-circuit current. On-Chip thermal limiting
provides protection against any combination of overload and
ambient temperatures that would create excessive junction
temperatures.
The B1117 is offered in a 3-pin SOT-223, and TO-252
(DPAK) packages compatible with other 3 terminal regulators.
5-pin version in TO-263 with lower dropout of 0.4 volt is
available.
Features
•
Adjustable Output Down to 1.2V
•
Output Current of 1.0Amp
•
Low Dropout 1.0V for B1117
•
Dropout of 0.40 V in for B1117A
•
Adjustable & Fix 1.5V, 1.8V, 2.5V, 2.85V,
3.0V, 3.3V, 5.0V
•
0.05% Load Regulation
•
Current & Thermal Limiting
•
Lower Cost SOT-89 Package
•
Available in SOT-223, and TO-252,
TO-263 & SO-8
• Similar to industry Standard LT1117
Applications
•
Active SCSI terminators
•
High efficiency Linear Regulator
•
Post regulators fro Switching Supplies
•
Battery Charger
•
5V to 3.3V linear Regulators
•
Motherboard Clock Supplies
Front
TO-252
ADJ/GN
V
IN
V
OUT
1
2
3
IN
OUT
Adj/GND
Tab V
OUT
Front View
SOT-223
IN
OUT
Adj/GND
Tab V
OUT
Front View
SOT-223
V
POWER
OUTPUT
1
2
3
4
5
V
CONTROL
ADJ/GND.
SENSE
TO-263-5 Package
V
POWER
V
POWER
OUTPUT
1
2
3
4
5
V
CONTROL
V
CONTROL
ADJ/GND.
SENSE
TO-263-5 Package
Bay Linear
Inspire the Linear Power
Tab V
OUT
SOT-223
Tab V
OUT
Front View
SOT-223-5
4
1
5
23
#1 Sense
#2 Adj/GND
#3 OUT
#4 Control
#5 VIN
Tab V
OUT
SOT-223
Tab V
OUT
Front View
SOT-223-5
4
1
5
23
#1 Sense
#2 Adj/GND
#3 OUT
#4 Control
#5 VIN
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