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ETC |
Bay Linear
Inspire the Linear Power
500 mA Low Dropout Voltage Regulators
B4500
Preliminary Information
Description
Features
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 technologies. 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.
• Maximum Output Current: 500 mA.
• Highly accurate: Output voltage +/- 2%.
• Only 2µA 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
Pin Connection
SOT-223 (N)
Vin
2
123
Vss Vin Vout
Top View
SOT-89 (R)
Vin
2
1 23
Vss Vin Vout
Top View
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
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
Input Voltage
Output Current
Output Voltage
Continual Total
Power Dissipation
Operating Ambient Temperature
Storage Temperature
SOT-223
SOT-89
Symbol
VIN
IOUT
VOUT
Pd
TOPR
TSTG
Ratings
6.5
800
VSS -0.3 to VIN 0.3
500
300
-30 to 80
-40 to 125
Units
V
mA
V
mW
°C
°C
Electrical Characteristics (Ta = 25°C, VIN = VOUT + 0.5V; unless otherwise noted)
Parameter
Conditions
MIN TYP MAX
Output Voltage
Line Regulation
∆VOUT/∆VIN-VOUT
Load Regulation
Maximum Output Current
IO = 0mA
IO = 0 to 500mA
IO =100mA,
(VOUT + 0.1V)<VIN<6V
VIN =6V, 0mA < IO < 500mA
COUT = 1µF
-1.4%
-2%
500
- +1.4%
- +2%
0.2 0.3
0.04
Current Limit
900
Ground Pin Current
Dropout Voltage
IOUT = 100mA
IO = 100mA
IO = 300 mA
26
110 160
300 450
Thermal Shutdown Temperature
IO = 500 mA
450
155
UNIT
V
%/V
%/mV
mA
µA
mV
°C
Bay Linear, Inc 2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
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