B4600CN-60 [ETC]
600 mA Low Dropout Voltage Regulators; 600毫安低压差稳压器
| 型号： | B4600CN-60 |
| 厂家： | 
ETC |
| 描述： | 600 mA Low Dropout Voltage Regulators |
| 文件： | 总6页 (文件大小：194K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Bay Linear
Inspire the Linear Power
600 mA Low Dropout Voltage Regulators
B4600
Description
Features
The B4600 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.
•
•
•
•
Maximum Output Current: 600 mA.
Highly accurate: Output voltage +/- 2.5%.
Only 2µA power Consumption.
Very Low Dropout:
0.11V @ 100mA
0.3V @ 300mA
0.5V @ 450mA
•
Offered in SOT-89 & SOT-223 Packages
The B4600 consists of
a high-precision voltage
reference, an error correction circuit, and a current
limited output driver.
Applications
Available in SOT223 (500mW) and SOT-89 (300mW)
packages minimizing the usage of board real state.
•
•
•
•
Battery Powered Equipment
Notebook PC, Palmtops, PDA
Portable Cameras and Video Recorders
Reference Voltage Sources
Pin Connection
Ordering Information
Package
SOT-223
SOT-89
Part No.
B4600CN-X.X
B4600CR-X.X
X.X = Fixed Output Voltages from 2.0V to 6.0V
SOT-89 (R)
SOT-223 (N)
Vin
Vin
2
2
2
1
3
1
3
2
Vss Vin Vout
Vss Vin Vout
Top View
Top View
Bay Linear, Inc 2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B4600
Absolute Maximum Ratings
Parameter
Symbol
VIN
Ratings
Units
V
mA
V
Input Voltage
Output Current
Output Voltage
6.5
IOUT
800
VSS -0.3 to VIN 0.3
500
VOUT
SOT-223
SOT-89
Continual Total
Pd
mW
Power Dissipation
300
Operating Ambient Temperature
Storage Temperature
TOPR
TSTG
-30 to 80
-40 to 125
°C
°C
Electrical Characteristics (Ta = 25°C, VIN = 5V; unless otherwise noted)
Parameter
Conditions
MIN
-1.4%
-2.5%
TYP
-
-
MAX UNIT
IO = 0mA
IO = 0 to 600mA
+1.4%
Output Voltage
V
+2.5%
IO= 100mA,
0.2
0.3
%/V
Line Regulation
Load Regulation
∆VOUT/∆VIN-VOUT
(VOUT + 0.1V)<VIN<6V
VIN= 6V, 0mA < IO < 500mA
COUT =1 µF
0.04
%/mV
Maximum Output Current
Current Limit
Ground Pin Current
500
900
mA
2
6
IOUT = 100mA
IO = 100mA
IO = 300 mA
IO = 500 mA
µA
110
300
550
155
160
450
Dropout Voltage
mV
Thermal Shutdown Temperature
°C
Bay Linear, Inc 2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B4600
PRODUCT DESCRIPTION
The B4600 is precision fixed output voltage regulator.
Unlike bipolar regulators, the B4600 supply current
does not increase with load current. In addition, Vout
remains stable and within regulator at very low load
currents (an important consideration in RTC and
CMOS RAM battery back-up application).
PD=(VINMAX-VOUTMIN)ILOADMAX
PD= worst case actual power dissipation
Where:
V
INMAX= Maximum voltage on VIN
VOUTMIN=Minimum regulator output voltage
ILOADMAX= maximum output (LOAD) Current
Figure 1 shows a typical application circuit. The
regulator is enabled any time the shutdown input is at
or above VIH. And shutdown (disabled) when SHDN is
at or below VIL. SHDN maybe controlled by a CMOS
logic gate, or I/O port of a micro controller. If the
SHDN input is not. Required, it should be connected
directly to the supply. While in shutdown, supply
current decreases to 0.05µA (typical) and Vout falls to
zero volts.
The maximum allowable power dissipation is function
of the maximum ambient temperature (TAMAX). The
maximum allowable die temperature (125°C) and the
thermal resistance from junction-to-air (θJA).
P
DMAX=(TJMAX-TAMAX)/ θJA
Where all terms are previously defined
This can be caused in conjunction with other equation
to ensure regulator thermal operation is within limit.
For example:
Output Capacitor
A 1µF (min) capacitor from Vout to ground is required.
Then output capacitor should have an effective series
resistance of 5Ω or less. A 1µA capacitor should be
connected from Vin to GND if there is more than 10
inches of wire between the regulator and the AC filter
capacitor, or if a battery is used as the power source.
Aluminum electrolytic or tantalum capacitor types can
be used. (since many aluminum electrolytic capacitors
freeze at approximately- 30°C, solid tantalums are
recommended for applications operating below –25
°C.) When operating from sources other than
batteries, supply-noise rejection and transient response
can be improved by increasing the value of the input
and output capacitors and employing passive filtering
techniques.
Given:
V
INMAX=3.3V+10%
VOUTMIN=2.7V-2.5%
LOADMAX=275 mA
I
T
JMAX=125°C
TAMAX=95°C
θJA= 59°C/W
Find:
1. Actual power dissipation
2. Maximum allowable dissipation
Thermal Considerations
Thermal Shutdown
VIN
VOUT
Integrated thermal protection circuitry shuts the
regulator off when die temperature exceeds 160°C.
The regulator remaining off until the die temperature
drops to approximately 140 °C.
C1
C2
µ
µ
1 F
1 F
BATTREY
B4500
GND
Power Dissipation
The amount of power the regulator dissipates is
primarily a function of input and output voltage, and
output current. The following equation is used to
calculate worst case power dissipation:
Bay Linear, Inc 2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B4600
C
A
J
N
P
2
1
3
K
B
F
D
G
-T-
STYLE 3
DIM
MILLIMETERS
INCHES
STYLE 1
PIN 1. BASE
MIN
4.40
2.29
140
MAX
4.60
2.60
160
MIN
MAX
0.181
0.102
0.062
0.018
0.070
0.020
PIN 1. GATE
A
B
C
D
E
F
G
J
K
L
N
P
0.174
0.091
0.056
0.015
0.064
0.018
2. ANODE
2. COLLECTOR
3. EMITTER
3. CATHODE
0.36
1.62
0.44
0.48
1.80
0.53
STYLE 2
PIN 1. ANODE
2. CATHODE
3. NO CONNECTION
STYLE 4
150 BSC
0.059 BSC
PIN 1. DRAIN
0.35
0.80
0.44
1.04
0.014
0.032
0.017
0.040
0.118 BSC
2. GATE
3. SOURCE
300 BSC
2.04
3.94
2.28
4.25
0.081
0.156
0.089
0.167
Bay Linear, Inc 2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 606-5950, Fax: (925) 940-9556
www.baylinear.com
B4600
Bay Linear, Inc 2478 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.
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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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