BAYLI B4500CR-3.2, B4500CR-3.1, B4500CR-3.0, B4500CR-2.9, B4500CR-2.8 Datasheet
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Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com
500 mA Low Dropout Voltage Regulators
B4500
Preliminary Information
Pin Connection
Ordering Information
Package Part No.
SOT-223 B4500CN-X.X
SOT-89 B4500CR-X.X
X.X = Fixed Output Voltages from 2.0V to 6.0V
Description
The B4500 series are a group of positive output voltage,
three-pin regulators, that provide a high current even
when the input/output voltage differential is small. Very
low power consumption, only 2µA typ., and high
accuracy is achieved though CMOS construction and
programmable fuse t echnologies. Output voltage: 2.0V
to 6.0V in 0.1V increments.
The B4500 consists of a high-precision voltage
reference, an error correction circuit, and a current
limited output driver.
Available in SOT223 (500mW) and SOT-89 (300mW)
packages minimizing the usage of board real state.
Features
• Maximum Output Current: 500 mA.
• Highly accurate: Output voltage +/- 2%.
• Only 2µµµµA power Consumption.
• Very Low Dropout:
0.11V @ 100mA
0.3V @ 300mA
0.5V @ 450mA
• Offered in SOT-89 & SOT-223 Packages
Applications
• Battery Powered Equipment
• Notebook PC, Palmtops, PDA
• Portable Cameras and Video Recorders
• Reference Voltage Sources
Top View
SOT-223 (N)
1
2
3
Vss Vin Vout
2
Vin
Bay Linear
Bay LinearBay Linear
Bay Linear
Inspire the Linear Power
Ins
p
ire the Linear PowerInspire the Linear Power
Ins
p
ire the Linear Power
Top View
SOT-89 (R)
1
2
3
Vss Vin Vout
2
Vin
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556 www.baylinear.com
B4500
Absolute Maximum Ratings
Parameter Symbol Ratings Units
Input Voltage VIN 6.5 V
Output Current I
OUT
800 mA
Output Voltage V
OUT
V
SS
-0.3 to VIN 0.3 V
SOT-223 500
Continual Total
Power Dissipation
SOT-89
Pd
300
mW
Operating Ambient Temperature T
OPR
-30 to 80
°
C
Storage Temperature T
STG
-40 to 125
°C
Electrical Characteristics (Ta = 25
°°°°
C, V
IN
= V
OUT +
0.5V; unless otherwise noted)
Parameter Conditions MIN TYP MAX UNIT
IO = 0mA -1.4% - +1.4%
Output Voltage
I
O
= 0 to 500mA -2% - +2%
V
Line Regulation ∆V
OUT
/∆VIN-V
OUT
I
O
=100mA,
(V
OUT
+ 0.1V)<VIN<6V
0.2 0.3 %/V
Load Regulation
VIN =6V, 0mA < I
O
< 500mA
C
OUT
= 1µF
0.04 %/mV
Maximum Output Current 500
Current Limit 900
mA
Ground Pin Cur rent I
OUT
= 100mA
2 6
µ
A
IO = 100mA 110 160
IO = 300 mA
300 450
Dropout Voltage
I
O
= 500 mA
450
mV
Thermal Shutdown Temperature
155
°
C
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