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B29151S

Regulator

器件类别:电源/电源管理    电源电路   

厂商名称:Bay Linear Inc

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器件参数
参数名称
属性值
包装说明
,
Reach Compliance Code
unknown
ECCN代码
EAR99
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Bay Linear
Inspire the Linear Power
1.5A High Current Low Dropout
Voltage Regulator Adjustable & Fix Output
B29150
Preliminary Information
Description
The Bay Linear B29150 is a 1.5A high accuracy, low dropout
voltage regulator with only 350mV(Typ.)@ 1.5A). The B29150 is
designed for low voltage a application that requires lower dropout
voltage and faster transient response. This device is an excellent
choice for use in powering low voltage microprocessor that require
a lower dropout, faster transient response to regulate from +2.5V to
3.8V supplies and as a post regulator for switching supplies
applications.
The B29150 offers full protection against over-current faults,
reversed input polarity, reversed load insertion, and positive and
negative transient voltage. On-Chip trimming adjusts the reference
voltage to 1%. Features such as Enable pin, Error Flag pin are also
included in the 5 pin packages
.
The B29150 is offer in a new LPDD
(Low Profile TO-263) package from 4.47 mm (DD) tickness down
to only 1.27 mm (LPDD) total tickness.
The B29150 are offered in a 3 & 5-pin TO-220 & TO-263 package
compatible with other 3 terminal regulators. For a 3A low dropout
regulator refer to the B39300 data sheet.
Features
Adjustable & Fix Output
1% output accuracy @2.5V, 3.3V, @ 5.0V
Output Current of 1.5A
Low Dropout Voltage of 350mV @ 1.5A
Extremely Tight Load & Line Regulation
Reverse-battery and “Load Dump” Protection
Zero Current Shutdown Mode (5-pin version)
Error Flag Signal Output-of-Regulation (5-pin
version)
Offer in TO-263, TO-220, & New Slim LPDD
Similar to industry Standard MIC29150
Applications
Powering VGA & Sound Card
LCD Monitor
USB Power Supply
SMPS Post Regulator
High Efficiency ”Green” Computer System
Adjustable Power Supply
Pin Connection
Ordering Information
Devices
B29150T
B29151/2/3T
B29150S
B29151/2/3S
B29150J
B29151/2/3J
TO-220-3 Package
Package
TO-220-3
TO-220-5
TO-263-3
TO-263-5
LPDD-3
LPDD-5
TO-220-5 Package
Temp.
-40
°C
to 125
°C
-40
°C
to 125
°C
-40
°C
to 125
°C
-40
°C
to 125
°C
-40
°C
to 125
°C
-40
°C
to 125
°C
TO-263-3 Package
TO-263-5 Package
BAY
B29150
1
2
3
BAY
B29151/52/53
1 2 3 4 5
B29151
1) ENABLE
2) INPUT
3) GND
4) OUTPUT
5) FLAG
B29152
1) ENABLE
2) INPUT
3) GND
4) OUTPUT
5) ADJUST
B29153
1) FLAG
2) INPUT
3) GND
4) OUTPUT
5) ADJUST
BAY
B29150
BAY
B29151/52/53
B29151
1) ENABLE
2) INPUT
3) GND
4) OUTPUT
5) FLAG
B29152
1) ENABLE
2) INPUT
3) GND
4) OUTPUT
5) ADJUST
B29153
1) FLAG
2) INPUT
3) GND
4) OUTPUT
5) ADJUST
V
IN
GND V
OUT
Front View
Top View
1 2 3 4 5
V
IN
GND V
OUT
Top View
Front View
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556
www.baylinear.com
B29150
ABSOLUTE MAXIMUM RATINGS
Lead Temp. (Soldering, 5 Seconds) ................................ 260°C
Storage Temperature Range .............................. -65° to +150°C
Operating Junction Temperature Range
B29150/51/52/53 Control Section ............. -45°C +125°C
B29150/51/52/53 Power Transistor ............-45°C +150°C
Input Voltage........................................................ 26V
Maximum Output Current ................................... 3.5A
Input Supply Voltage (Note1) (Survival)-20V to +60V
ELECTRICAL CHARACTERISTICS
(NOTE 1) at I
OUT
= 10mA, T
a
=25°C, unless otherwise specified.
PARAMETER
2.5V Version
CONDITIONS
I
OUT
= 10mA
10mA
≤I
OUT
≤1.5A,
4.75V≤V
IN
≤26V
I
OUT
= 10mA
10mA
≤I
OUT
≤1.5A,
4.75V≤V
IN
≤26V
I
OUT
= 10mA
10mA
≤I
OUT
≤1.5A,
5.5V≤V
IN
≤26V
I
O
= 10mA, (V
OUT
+ 1V)
V
IN
26V
V
IN
= V
OUT
+ 5V, 10mA
I
OUT
I
FULLLOAD
(Note 2, 6)
Output Voltage (Note 6)
Temperature Coef.
Typ
2.5
2.5
3.3
3.3
5.0
5.0
0.06
0.2
20
80
220
350
8
25
0.9
1.7
400
260
1.240
B29150/51/52/53
Min
Max
2.475
2.450
3.267
3.234
4.95
4.90
2.525
2.550
3.330
3.366
5.05
5.10
0.5
1
100
200
Units
V
Output Voltage (Note 2)
3.3V Version2.
Output Voltage (Note 2)
5.0V Version
V
Output Voltage (Note 2)
All Voltage Options
V
Line Regulation
Load Regulation
∆V°
∆T
Dropout Voltage
%
%
ppm/°C
mV
I
O
= 100mA
I
O
= 750mA
I
O
= 1.5A
600
20
mA
mA
1.5
A
µV
RMS
Ground Current
I
GNDDO
Ground Pin Current at
Dropout
Current Limit
Output Noise Voltage
(10Hz to 100kHz)
I
L
= 100mA
Reference Voltage
Reference Voltage
Adjust Pin
Bias Current
Reference Voltage
Temperature
Coefficient
Adjust Pin Bias
Current Temperature
Coefficient
Output Leakage
Current
Output Low
Voltage
I
O
= 750mA, V
IN
= V
OUT
, +1V
I
O
= 1.5A
V
IN
= 0.5V less than specified V
OUT
I
OUT
= 10mA
V
OUT
= 0V (Note 4)
C
L
= 10µF
C
L
= 33µF
1.228
1.215
1.203
1.252
1.265
1.277
80
120
V
V
nA
ppm/°C
(Note 8)`
40
(Note 7)
20
0.1
nA/°C
Flag Output (Error Comparator) B29152/53
V
OH
= 26V
Device set for 5V. V
IN
= 4.5V
I
OL
= 250µA
0.01
220
1.00
2.00
300
400
µA
mV
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556
www.baylinear.com
B29150
Upper Threshold
Voltage
Lower Threshold
Voltage
Hysteresis
Device set for 5V (Note 9)
Device set for 5V (Note 9)
Device set for 5V (Note 9)
60
75
15
40
25
95
140
mV
mV
mV
V
0.8
2.4
V
EN
= 26V
V
EN
= 0.8V
100
600
750
2.5
5
500
V
µA
µA
ENABLE Input B29152/53
Input Logic Voltage
Low (OFF)
High (ON)
Enable Pin
Input Current
Regulator Output
Current in Shutdown
(Note 10)
10
NOTES:
The Bold specifications apply to the full operating temperature range.
Note 1: Maximum positive supply voltage of 60V must be of limited duration (<100msec) and duty cycle.) The maximum continuous supply voltage is 16V.
Note 2: Full load current (I
FL
) is defined as 1.5A for the B29150/51/52/53.
Note 3: Dropout voltage is defined as the input-to output differential when the output voltage drops to 99% of its nominal value with V
OUT
+ 1V applied to V
IN
.
Note 4: VIN = V
OUT (NOMINAL)
+1V. For example, use V
IN
= 4.3V for a 3.3V regulator. Employ pulse-testing procedures to minimize temperature rise.
Note 5: Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current to the ground current.
Note 6: Output voltage temperature coefficient is defined as the worst case voltage changed divided by the total temperature range.
Note 7: Thermal regulation is defined as the change in the output voltage at a time T after a change in power dissipation is applied, excluding load or line regulation
effects. Specifications are for a 200mA load pulse as V
IN
= 20V (a 4W pulse) for T = 10ms.
Note 8: VREF
V
OUT
(V
IN
- 1), 2.3V
V
IN
16V, 10mA < I
L
I
FL
, T
J
T
JMAX
Note 9: Comparator threshold is expressed in terms of a voltage differential at the Adjust terminal below the nominal reference voltage measured 6V input. To express
these thresholds in terms of output voltage change, multiply the error amplifier gain = V
OUT
/V
REF
= (R1 + R2)/R2. For example, at a programmable output voltage of
5V, the Error output is guaranteed to go low when the output drops by 95mVx 5V/ 1.240V = 38mV. Threshold remains constant as a percent of V
OUT
as V
OUT
is varied,
with the dropout warning occurring at typically 5% below nominal, 7.7% guaranteed.
Note 10: V
EN
0.8V and V
IN
16V, V
OUT
= 0.
BLOCK DIAGRAM
IN
OUT
O.V
I
LIMIT
FLAG
+
1.180V
Reference
1.240V
+
28V
R1*
-
-
ADJ
EN
Thermal
Shutdown
R2*
GND
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556
www.baylinear.com
B29150
APPLICATION HINTS
The Bay Linear B29150/51/52/53 incorporates protection against
over-current faults, reversed load insertion, over temperature
operation, and positive and negative transient voltage. However, the
use of an output capacitor is required in order to insure the stability
and the performances.
Minimum Load Current
To ensure a proper behavior of the regulator at light load, a
minimum load of 5mA for B29150/51/52/53 is required.
Adjustable Regulator Design
B29152/53 are adjustable regulators and maybe programmed for
any value between 1.25V and 16V using two resistors. The relation
between the resistors is given by:
R
1
=R
2
(V
OUT
/1.240 –1)
Resistors have a large value up to 1mΩ in order to reduce the
current consumption. This might be interesting in the case of
widely varying load currents.
Thermal Consideration
Although the B29150/51/52/53 offers limiting circuitry for overload
conditions, it is necessary not to exceed the maximum junction
temperature, and therefore to be careful about thermal resistance. The
heat flow will follow the lowest resistance path, which is the Junction-
to-case thermal resistance. In order to insure the best thermal flow of
the component, a proper mounting is required. Note that the case of
the device is electrically connected to the output. The
case has to be electrically isolated, a thermally conductive spacer can
be used. However do not forget to consider its contribution to thermal
resistance.
Assuming:
V
IN
= 10V, V
OUT
= 5V, I
OUT
= 1.5A, T
A
= 90°C,
θ
CASE
= 1°C/W (no
external heat sink, no wind)
Power dissipation under these conditions
P
D
= (V
IN
– V
OUT
) * I
OUT
= 7.5W
Junction Temperature
T
J
= T
A
+ P
D
* (θ
CASE
+
θ
JC
)
For the Control Section
T
J
= 90°C + 7.5W*(1°C/W + 0.6°C/W) = 102°C
114°C < T
JUNCTION MAX
for the control section.
For the Power Section
T
J
= 90°C + 7.5W*(1°C/W + 1.6°C/W) = 104.5°C
109.5°C < T
JUNCTION MAX
for the power transistor.
In both case reliable operation is insured by adequate junction
temperature.
Error Flag
B29152/53 features an error indicating either an over current fault
or a low input voltage. This flag pulls low when such a problem
occurs and may sink 10mA. It is inoperative during thermal
shutdown.
Enable Input
B29152/53 features enable input allowing turning ON & OFF the
device. EN has been designed to be compatible with TTL/CMOS
logic. When the regulator is ON, the current flowing through this
pin is approximately 20µA.
V
IN
BAY
B29150
V
OU
T
Fig.1 Basic Fixed Output Regulator
Capacitor Requirements
The output capacitor is needed for stability and to minimize the output
noise. The required value of the capacitor varies with the load.
However, a minimum value of 10µF Aluminum will guarantee
stability over load. A tantalum capacitor is recommended for a fast
load transient response.
If the power source has high AC impedance, a 0.1µF capacitor
between input & ground is recommended. This capacitor should have
good characteristics up to 250 kHz.
1
2
4
5
V
IN
BAY
B29152
3
V
OUT
R
1
V
OUT
= V
REF
X [1 + (R
1
/
R
2
)]
For best results, the total series resistance should be small
enough to pass the minimum regulator load current
R
2
Fig. 2 Adjustable Output Voltage Regulator
Bay Linear, Inc
2478 Armstrong Street, Livermore, CA 94550 Tel: (925) 989-7144, Fax: (925) 940-9556
www.baylinear.com
B29150
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) 989-7144, Fax: (925) 940-9556
www.baylinear.com
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参数对比
与B29151S相近的元器件有:B29150T。描述及对比如下:
型号 B29151S B29150T
描述 Regulator Regulator
Reach Compliance Code unknown unknown
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