ETC1 B4250CK3-3.5 250 ma cmos low dropout ldo Datasheet

Bay Linear
Inspire the Linear Power
B4250
250 mA CMOS Low Dropout LDO
Description
Features
The B4250 series are a group of positive output voltage,
three-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 B4250 consists of a high-precision voltage
reference, an error correction circuit, and a current
limited output driver.
Available in SOT-23 (150mW) and SOT-89 (500mW)
packages minimizing the usage of board real state.
•
Applications
•
•
•
•
Pin Connection
Maximum output current: 250 mA.
Highly accurate: Output voltage +/- 2%. (1%)
CMOS low power consumption.
Small input/output differential:
0.38V at 160mA (Vout=3.3V)
0.12V at 100mA (Vout=5V)
Pin-to-Pin Improve XC62FP/XC6201
Battery Powered Equipment
Notebook PC, Palmtops, PDA
Portable Cameras and Video Recorders
Reference Voltage Sources
Ordering Information
-40°°C to +125°°C
SOT-23-3 (K3)
SOT-89 (R)
Vin
Part No.
SOT-23
B4250CK3 -X.X
SOT-89
B4250CR-X.X
X.X = Fixed Output Voltages from 2.0V to 6.0V
Vin
3
2
1
Vss
Package
2
1
Vout
Top View
Bay Linear, Inc
Vss
2
3
Vin Vout
Top View
2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B4250
Absolute Maximum Ratings
Parameter
Input Voltage
Output Current
Output Voltage
Continual Total
Power Dissipation
Operating Ambient Temperature
Storage Temperature
Symbol
VIN
IOUT
VOUT
SOT-23
SOT-89
Pd
TOPR
TSTG
Ratings
12
500
VSS -0.3 to VIN 0.3
150
500
-30 to 80
-40 to 125
Units
V
mA
V
mW
°C
°C
Electrical Characteristics (Ta = 25°°C, VIN = VOUT + 1V; unless otherwise noted)
Parameter
Output Voltage
Line Regulation ∆VOUT/∆VIN-VOUT
Load Regulation
Current Consumption
Dropout Voltage
3.3V
5.0V
3.3V
5.0V
3.3V
5.0V
3.3V
5.0V
3.3V
5.0V
Conditions
IO = 40mA, VIN = 4.3V
IO = 40mA, VIN = 6.0V
IO = 40mA, 4.3V<VIN<10V
IO = 40mA, 6.0V<VIN<10V
VIN 4.3V, 1mA < IO < 80mA
VIN 6V, 1mA < IO < 100mA
VIN = 4.3V
VIN = 6.0V
IO = 160 mA
IO = 100 mA
200 mA
MIN
3.234
4.900
TYP
3.300
5.000
MAX
3.366
5.100
UNIT
0.2
0.3
%V
45
40
1.0
2.0
0.4
0.12
0.38
90
80
2.9
4.5
0.7
0.3
0.6
V
mV
µA
V
Marking Format
SOT-23
SOT-89
B4250
XZYWW
CXWW
C = B4250
Variables
X = Voltage Codes
B = 2.0
F=
3.3
C = 2.5
G=
3.5
D = 2.8
H=
5.0
E = 3.0
Bay Linear, Inc
Z = Production
Code
Y = Year
WW = Work Week Code
01 = 2001
02 = 2002
03 = 2004
etc
SOT-23 = 01 to 99
SOT-89 = 01 to 52
2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B4250
Output Voltage vs. Output Current
B4250-3.0
Output Voltage vs. Input Voltage
B4250-3.0
Dropout Voltage vs. Output Current
B4250-3.0
Bay Linear, Inc
2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B4250
Supply Current vs. Input Voltage (B4250-3.0)
Input Transient Response (B4250-3.0)
Load Transient Response (B4250-3.0)
Bay Linear, Inc
Ripple Rejection Ratio (B4250-3.0)
2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B4250
STANDARD CIRCUIT
VIN
VOUT
VIN
CIN
Tantanium
CL 1 µ F
Tantanium
VSS
RL
SOT-23
0.015 - 0.018
(0.381 - 0.457)
0.047 - 0.055 0.083 - 0.098
(1.194 - 1.397) (2.108 - 2.489)
0.035 - 0.040
(0.889 - 1.016)
0.020 - 0.024
(0.508 - 0.610)
0.070 - 0.080
(1.778 - 2.032)
0.110 - 0.120
(2.794 - 3.048)
0.001 - 0.004
(0.025 - 0.102)
Bay Linear, Inc
0.003 - 0.005
(0.076 - 0.127)
0.030 - 0.041
(0.762 - 1.041)
0.018 - 0.024
(0.457 - 0.610)
2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
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
2418 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
Similar pages