Bay Linear
Inspire the Linear Power
150 mA CMOS Low Dropout LDO
ON/OFF
B4151
Description
The B4151 series are a group of positive output voltage,
five-pin regulators, which provide a high current even
when the input/output voltage differential is small. Low
power consumption and high accuracy is achieved
though CMOS and programmable fuse technologies.
Output voltage: 2.0V to 6.0V in 0.1V increments.
The B4151 consists of a high-precision voltage
reference, an error correction circuit, and a current
limited output driver. Key features include a Shutdown
Pin that reduces supply current. With good transient
responses, output remains stable even during load
changes.
The ON/OFF pin enables the output to be turned off,
resulting in reduced power consumption. Provided in
SOT-25 (150mW) packages minimizes the usage of
board real state.
Features
•
•
•
•
•
•
•
•
•
Maximum output current: 150 mA.
Highly accurate: Output voltage +/- 2%(1%)
Shutdown Supply Current 1µA
µ
Ground Current of Less than 20µA
µ
CMOS low power consumption.
0.20V at 160mA
0.38V at 80mA
Small input/output differential:
Shut Down Mode for Power Savings
Improve pin-to-pin XC62GR-XX
Pin-to-Pin Low Power to Bipolar LDO’s
Applications
•
•
•
•
•
Battery Powered Equipment
Notebook PC, Palmtops, PDA
Portable Cameras and Video Recorders
Reference Voltage Sources
Cellular / GSM / PCS Phones
Pin Connection
Ordering Information
Package
SOT-25
Part No.
B4151CK5 -X.X
X.X = Fixed Output Voltages from 2.0V to 6.0V
SOT-25 (K5)
V
out
5
NC
4
1
2
3
V
SS
V
IN
ON/OFF
Top View
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B4151
Absolute Maximum Ratings
Parameter
Input Voltage
Output Current
Output Voltage
CE Output Voltage
Continual Total Power Dissipation
Operating Ambient Temperature
Storage Temperature
Symbol
V
IN
I
OUT
V
out
V
OUT
SOT-25
SOT-89
Pd
T
OPR
T
STG
Ratings
12
500
V
SS
-0.3 to V
IN
0.3
V
SS
-0.3 to V
IN
0.3
300
500
-30 to 80
-40 to 125
Units
V
mA
V
V
mW
°C
°C
Electrical Characteristics (T
a
= 25°C, V
IN
= V
OUT +
0.5V; unless otherwise noted)
°
Parameter
Output Voltage Accuracy
Line Regulation
Load Regulation
Maximum Output Current
Current Limit
CE input voltage High
CE input voltage Low
CE input voltage High
CE input voltage Low
∆V
out
/∆T
opr .
. V
out
Input Stability
Input Voltage
Ground Pin Current
Dropout Voltage
Output Voltage Temp.
∆V
OUT
/∆V
IN
-V
OUT
Conditions
I
O
= 1mA
I
O
= 0 to 40mA
I
O
= 40mA,
(V
OUT
+ 0.1V)<V
IN
<10V
VIN=V
out
+1V
1mA < I
O
< 80mA C
OUT
= 1µF
MIN
-1.4%
-2%
TYP
-
-
0.2
MAX
+1.4%
+2%
0.3
0.04
150
1000
1.5
V
CE
=V
IN
V
CE
=V
SS
I
out
=40mA, 4V≤V
in
≤10V
V
in
=V
ce
=V
out
+1V
V
in
=V
out
+1V, V
ce
=V
ss
I
O
= 100mA
I
O
= 150 mA
0.25
1.0
0
0.3
19
0.1
395
770
UNIT
V
%/V
%/mV
mA
V
V
µkA
µkA
%/V
V
µA
mV
°C
-0.2
-0.05
0.2
10.0
200
380
±100
Marking Format
SOT-25
SERIES
CE
H
L
H
L
VOLTAGE
OUTPUT
ON
OFF
OFF
ON
EXWW
E = B4151
B4151R
B4151P
WW = Work Week Code
SOT-25 = 01 to 99
Variables
X = Voltage Codes
B = 2.0
C = 2.5
D = 2.8
E = 3.0
F=
G=
H=
3.3
3.5
5.0
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B4151
STANDARD CIRCUIT
V
IN
CE
C
IN
Tantanium
V
OUT
V
IN
V
SS
C
L
10µf
Tantanium
R
L
Advance Information-
These data sheets contain descriptions of products that are in development. The specifications are based on the engineering calculations,
computer simulations and/ or initial prototype evaluation.
Preliminary Information-
These data sheets contain minimum and maximum specifications that are based on the initial device characterizations. These limits are
subject to change upon the completion of the full characterization over the specified temperature and supply voltage ranges.
The application circuit examples are only to explain the representative applications of the devices and are not intended to guarantee any circuit
design or permit any industrial property right to other rights to execute. Bay Linear takes no responsibility for any problems related to any
industrial property right resulting from the use of the contents shown in the data book. Typical parameters can and do vary in different
applications. Customer’s technical experts must validate all operating parameters including “ Typical” for each customer application.
LIFE SUPPORT AND NUCLEAR POLICY
Bay Linear products are not authorized for and should not be used within life support systems which are intended for surgical
implants into the body to support or sustain life, in aircraft, space equipment, submarine, or nuclear facility applications without
the specific written consent of Bay Linear President.
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
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