A317B [AITSEMI]
BIPOLAR LINEAR REGULATOR HIGH CURRENT ADJUSTABLE VOLTAGE;
| 型号： | A317B |
| 厂家： | 
AiT Semiconductor |
| 描述： | BIPOLAR LINEAR REGULATOR HIGH CURRENT ADJUSTABLE VOLTAGE |
| 文件： | 总9页 (文件大小：500K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
A317B
BIPOLAR LINEAR REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
HIGH CURRENT ADJUSTABLE VOLTAGE
DESCRIPTION
FEATURES
The A317B is an adjustable 3-terminal positive
voltage regulator, designed to supply more than 1.5A
of output current with voltage adjustable from
1.3V~37V.
Output current up to 1.5A
Output voltage adjustable from 1.3V to 37V
Internal short circuit protection
Internal over temperature protection
Safe-Area compensation for output transistor
Available in TO220-3, TO-252 and TO-263
Packages
The A317B is available in TO220-3, TO-252 and
TO-263 Packages.
ORDERING INFORMATION
APPLICATION
PC Motherboard
Package Type
TO220-3
Part Number
A317BT3U
A317BT3VU
A317BDR
LCD Monitor
Graphic Card
T3
D
DVD Player
Network Interface Card/Switch
Telecom Equipment
Printer and other Peripheral Equipment
TO-252
TO-263
A317BDVR
A317BSR
S
A317BSVR
TYPICAL APPLICATION
V: Halogen free Package
R: Tape & Reel
U: Tube
Note
AiT provides all RoHS products
*=CIN is required if regulator is located near power supply filter.
**=CO is needed for stability and it improves transient response.
VOUT=VREF x (1+ R2/R1)+IADJxR2
Since IADJ is controlled to less than 100μA, the error associated with
this term is negligible in most applications.
REV1.2
- DEC 2015 RELEASED, MAR 2017 UPDATED -
- 1 -
A317B
BIPOLAR LINEAR REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
HIGH CURRENT ADJUSTABLE VOLTAGE
PIN DESCRIPTION
Top View
Top View
Symbol
ADJ
Top View
Function
Adjustable
Output
Pin #
1
2
3
VOUT
VIN
Input
REV1.2
- DEC 2015 RELEASED, MAR 2017 UPDATED -
- 2 -
A317B
BIPOLAR LINEAR REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
HIGH CURRENT ADJUSTABLE VOLTAGE
ABSOLUTE MAXIMUM RATINGS
VIN-VOUT, Input - Output Voltage Difference
PD, Power Dissipation
40V
Internal limited
0°C~125°C
-65°C~150°C
260°C
TOPR, Operating Temperature Range
TS, Storage Temperature
TLEAD, Lead Temperature ( soldering, 10 sec)
Stress beyond above listed “Absolute Maximum Ratings” may lead permanent damage to the device. These are stress ratings only and
operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
THERMAL DATA
Parameter
Symbol
Rating
112
54
Units
TO-252
TO-220
TO-263
TO-252
TO-220
TO-263
Junction-to-Ambient
Junction-to-Case
θJA
℃/W
64
12
θJC
5
℃/W
5
REV1.2
- DEC 2015 RELEASED, MAR 2017 UPDATED -
- 3 -
A317B
BIPOLAR LINEAR REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
HIGH CURRENT ADJUSTABLE VOLTAGE
ELECTRICAL CHARACTERISTICS
VI-VO=5V, 0°C<TJ<125°C, IO=500mA, IMAX=1.5A, PMAX=20W, unless otherwise specified
Parameter
Symbol
Conditions
Min.
Typ.
Max.
0.04
Unit
%/V
TA=25°C,
0.01
3V≤VI-VO≤40V
TA=0~125°C,
3V≤VI-VO≤40V
TA=25°C
Line Regulation
ΔVO
0.02
0.07
VO≤6V
VO≤5V
VO≤5V
VO≤6V
18
0.4
40
25
0.5
70
mV
%/VO
mV
10mA≤IO≤IMAX
Load Regulation
ΔVO
10mA≤IO≤IMAX
0.8
46
1.5
100
%/VO
μA
Adjustable Pin Current
Adjustable Pin Current
Change
IADJ
2.5V≤VI-VO≤40V,
ΔIADJ
2.0
5.0
μA
10mA≤IO≤IMAX, PD≤PMAX
3V≤VI-VO≤40V,
Reference Voltage
VREF
STT
1.20
1.25
0.7
3.5
2.2
0.4
1.30
V
10mA≤IO≤IMAX, PD≤PMAX
Temperature Stability
Minimum Load Current for
Regulation
%/VO
mA
IL(MIN)
VI-VO=40V
10
VI-VO≤15V, PD≤PMAX
1.5
Maximum output Current
RMS Noise vs. % of VOUT
Ripple Rejection
IO(MAX)
A
VI-VO≤15V, PD≤PMAX
,
0.15
TA=25°C
eN
TA=25°C, 10Hz≤f≤10kHz
VO=10V, f=120Hz, CADJ=0
VO=10V, f=120Hz,
0.003 0.01
60
%/VO
dB
RR
66
75
C
ADJ=10μF
Long-term Stability,
TJ=THIGH
ST
TA=25°C, 1000hr
0.3
1
%
NOTE: Testing with low duty pulse should be used to avoid heating effect
REV1.2
- DEC 2015 RELEASED, MAR 2017 UPDATED -
- 4 -
A317B
BIPOLAR LINEAR REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
HIGH CURRENT ADJUSTABLE VOLTAGE
TYPICAL PERFORMANCE CHARACTERISTICS
1.
Load Regulation
2.
Adjustment Current vs. Temperature
3.
Dropout Voltage vs. Input-Output
Voltage Difference
4.
Reference Voltage vs. Temperature
REV1.2
- DEC 2015 RELEASED, MAR 2017 UPDATED -
- 5 -
A317B
BIPOLAR LINEAR REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
HIGH CURRENT ADJUSTABLE VOLTAGE
BLOCK DIAGRAM
REV1.2
- DEC 2015 RELEASED, MAR 2017 UPDATED -
- 6 -
A317B
BIPOLAR LINEAR REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
HIGH CURRENT ADJUSTABLE VOLTAGE
PACKAGE INFORMATION
Dimension in TO220-3 (Unit: mm)
Dimension in TO-252 (Unit: mm)
REV1.2
- DEC 2015 RELEASED, MAR 2017 UPDATED -
- 7 -
A317B
BIPOLAR LINEAR REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
HIGH CURRENT ADJUSTABLE VOLTAGE
Dimension in TO-263 (Unit: mm)
Millimeters
Inches
Max
Symbol
Min
Max
4.670
0.150
1.370
0.910
1.370
0.530
1.370
10.310
8.900
Min
A
A1
B
b
b1
c
c1
D
E
4.470
0.000
1.170
0.710
1.170
0.310
1.170
0.176
0.000
0.046
0.028
0.046
0.012
0.046
0.394
0.335
0.184
0.006
0.054
0.036
0.054
0.021
0.054
0.406
10.010
8.500
0.350
e
e1
L
L1
L2
L3
V
2.540 TYP
0.100 TYP
0.204
4.980
15.050
5.080
2.340
1.300
5.180
15.450
5.480
2.740
1.700
0.196
0.593
0.200
0.092
0.051
0.608
0.216
0.108
0.067
5.600 REF
0.220 REF
REV1.2
- DEC 2015 RELEASED, MAR 2017 UPDATED -
- 8 -
A317B
BIPOLAR LINEAR REGULATOR
AiT Semiconductor Inc.
www.ait-ic.com
HIGH CURRENT ADJUSTABLE VOLTAGE
IMPORTANT NOTICE
AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to
discontinue any integrated circuit product or service without notice, and advises its customers to obtain the
latest version of relevant information to verify, before placing orders, that the information being relied on is
current.
AiT Semiconductor Inc.'s integrated circuit products are not designed, intended, authorized, or warranted to
be suitable for use in life support applications, devices or systems or other critical applications. Use of AiT
products in such applications is understood to be fully at the risk of the customer. As used herein may involve
potential risks of death, personal injury, or servere property, or environmental damage. In order to minimize
risks associated with the customer's applications, the customer should provide adequate design and
operating safeguards.
AiT Semiconductor Inc. assumes to no liability to customer product design or application support. AiT
warrants the performance of its products of the specifications applicable at the time of sale.
REV1.2
- DEC 2015 RELEASED, MAR 2017 UPDATED -
- 9 -
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