Bay Linear
Inspire the Linear Power
1.0Amp Low Dropout Voltage Regulator
B1117
Adjustable & Fix (0.40Volt Dropout)
Description
Features
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Adjustable Output Down to 1.2V
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.
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
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0.05% Load Regulation
Current & Thermal Limiting
Lower Cost SOT-89 Package
Available in SOT-223, and TO-252,
TO-263 & SO-8
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.
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Similar to industry Standard LT1117
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.
Applications
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Active SCSI terminators
High efficiency Linear Regulator
Post regulators fro Switching Supplies
Battery Charger
5V to 3.3V linear Regulators
Motherboard Clock Supplies
Pin Connection
Ordering Information
Devices
B1117D-X
B1117N-X
B1117T-X
B1117S-X
B1117M-X
Package
Temp.
TO-252
TO-223
TO-220
TO-263
SO-8
0 °C to 125 °C
0 °C to 125 °C
0 °C to 125 °C
0 °C to 125 °C
0 °C to 125 °C
SOT-223-5
Tab VOUT
8-Pin Surface Mount
SOT-223
Tab VOUT
ADJ
IN
#1 Sense
#2 Adj/GND
#3 OUT
#4 Control
#5 VIN
1
2
3
4
8
7
6
5
NC
IN
TO-252
OUT
OUT
IN
VPOWER
VCONTROL
OUTPUT
ADJ/GND.
5
4
3
2
1
N.C.
Adj/GND OUT
IN
4
2
3
5
1
Front View
Top View
Front View
1
2
3
SENSE
TO-263-5 Package
ADJ/GN VOUT VIN
Front
Bay Linear, Inc 2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com