BCDSEMI EH31A

Data Sheet
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR
General Description
Features
The AZ317 is an adjustable three-terminal positive
voltage regulator with a very low dropout of 1.2V at
1A output current. Using 2 external resistors, the
AZ317 can provide an adjustable output voltage down
to 1.25V.
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The AZ317 includes a circuit of trimmed bandgap reference to assure output voltage accuracy to be within
1%. It also provides current limiting and thermal shutdown. The current limit is trimmed to ensure specified
output current and controlled short-circuit current. The
On-chip thermal limiting provides protection against
any combination of overload and ambient temperature
that would create excessive junction temperature.
AZ317
Typical 1% Output Voltage Tolerance
Typical 0.01%/V Line Regulation
Typical 0.2% Load Regulation
Very Low Dropout Voltage: 1.2V at 1A Output
Current
Trimmed Current Limit
On-chip Thermal Protection
Operation Junction Temperature: 0 to 125oC
Applications
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The AZ317 is available in the standard SOT-223, TO220-3, TO-252-2 (1) and TO-263-3 power packages.
SOT-223
PC Motherboard
LCD Monitor
Graphic Card
DVD Player
Network Interface Card/Switch
Telecom Equipment
Printer and other Peripheral Equipment
TO-220-3
TO-263-3
TO-252-2 (1)
Figure 1. Package Types of AZ317
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR
AZ317
Pin Configuration
T Package
(TO-220-3)
H Package
(SOT-223)
VOUT
3
INPUT
2
OUTPUT
1
VOUT
INPUT
2
OUTPUT
1
ADJ
ADJ
S Package
(TO-263-3)
D Package
(TO-252-2(1))
VOUT
3
3
INPUT
2
OUTPUT
1
ADJ
3
INPUT
2
OUTPUT
1
ADJ
Figure 2. Pin Configuration of AZ317 (Top View)
Functional Block Diagram
Thermal
Shutdown
3
INPUT
2
OUTPUT
Current
Limiter
_
+
+
1
ADJ
Figure 3. Functional Block Diagram of AZ317
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR
AZ317
Ordering Information
AZ317
Circuit Type
E1: Lead Free
Package
TR: Tape and Reel
H: SOT-223
T: TO-220-3
D: TO-252-2 (1)
S: TO-263-3
Blank: Tube
Package
Temperature Range
SOT-223
0 to 125oC
TO-220-3
125oC
0 to
-
TO-252-2 (1)
0 to 125oC
TO-263-3
0 to 125oC
Blank: Tin Lead
Part Number
Tin Lead
Marking ID
Lead Free
Tin Lead
Lead Free
Packing
Type
AZ317HTR
AZ317HTR-E1
317H
EH31A
Tape & Reel
AZ317T
AZ317T-E1
AZ317T
AZ317T-E1
AZ317D
AZ317D-E1
AZ317D
AZ317D-E1
Tube
AZ317DTR
AZ317DTR-E1
AZ317D
AZ317D-E1
Tape & Reel
Tube
AZ317S
AZ317S-E1
AZ317S
AZ317S-E1
Tube
AZ317STR
AZ317STR-E1
AZ317S
AZ317S-E1
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR
AZ317
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Input Voltage
Max
Unit
VIN
20
V
Maximum Junction Temperature
TJ
150
o
Storage Temperature
TS
150
o
C
TLEAD
300
o
C
ESD
4000
V
Lead Temperature (Soldering, 10sec)
ESD (Human Body Model)
Min
-65
C
Note1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the
device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond
those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum
Ratings" for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Input Voltage
Operating Junction Temperature Range
Symbol
Min
Max
Unit
VIN
VOUT+2
15
V
TJ
0
125
o
Mar. 2007 Rev. 1. 3
C
BCD Semiconductor Manufacturing Limited
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Data Sheet
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR
AZ317
Electrical Characteristics
(Typicals and limits apply for TJ =25oC, P≤ Maximum Power Dissipation unless otherwise specified.)(Note 2)
Parameter
Reference Voltage
Symbol
VREF
Conditions
10mA≤IOUT≤1A,
3V≤ (VIN-VOUT) ≤10V
Min
Typ
Max
Unit
1.20
1.25
1.30
V
Line Regulation
SV
IOUT ≤ 20mA, 3V≤VIN-VOUT≤10V
0.01
0.04
%/V
Load Regulation
Si
VIN -VOUT = 2V, 10mA≤IOUT≤1A
0.2
0.4
%
20ms Pulse
0.04
0.07
%/W
IOUT = 1A
1.2
1.3
V
1.5
1.8
A
50
100
µA
Thermal Regulation
Dropout Voltage
Current Limit
∆V
ILIMIT
(VIN-VOUT) = 2V
1.2
Adjust Pin Current
Adjust Pin Current Change
1.4V≤(VIN-VOUT) ≤ 10V,
10mA ≤IOUT ≤1A
0.2
5
µA
Minimum Load Current
3V≤ (VIN-VOUT) ≤ 15V
3.5
10
mA
Ripple Rejection
f =120Hz, COUT =1µF Tantalum,
(VIN-VOUT) = 3V, IOUT =1A
Temperature Stability
Long -Term Stability
TA
RMS Output Noise (% of VOUT)
TA=25oC, 10Hz ≤ f ≤ 10kHz
Thermal Resistance,
Junction to Case
SOT-223
TO-252
TO-220
TO-263
Thermal Shutdown
Junction Temperature
=125oC,
1000hrs
Thermal Shutdown Hysteresis
60
75
dB
1
%
0.3
%
0.003
%
15
10
4.5
4
oC/W
150
oC
25
oC
Note 2: Maximum Power Dissipation is Package Type and Case Temperature dependent. Please see Figure 12.
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR
AZ317
Typical Performance Characteristics
0.8
1.2
1.1
Output Voltage Deviation (%)
o
Dropout Voltage (V)
TA=0 C
1.0
o
TA=25 C
0.9
o
TA=120 C
0.8
0.7
0.6
VOUT=3.3V
0.4
0.2
0.0
0.6
-0.2
0.5
0.2
0.4
0.6
0.8
0
1.0
20
40
60
80
Output Current (A)
120
Figure 6. Load Regulation vs. Temperature
Figure 5. Dropout Voltage vs. Output Current
1.260
3.40
1.255
VOUT=3.3V
1.250
IOUT=30mA
1.245
VOUT=3.3V
3.35
Output Voltage (V)
Reference Voltage (V)
100
o
Ambient Temperature ( C)
1.240
1.235
1.230
1.225
IOUT=30mA
3.30
3.25
3.20
1.220
3.15
1.215
1.210
0
25
50
75
100
3.10
125
0
o
25
50
75
100
125
o
Ambient Temparature ( C)
Ambient Temperature ( C)
Figure 7. Reference Voltage vs. Temperature
Figure 8. Output Voltage vs. Temperature
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR
AZ317
Typical Performance Characteristics (Continued)
5
100
Minimum Load Current (mA)
90
4
VOUT=3.3V
Adjust Pin Current (µ A)
80
3
2
VOUT=3.3V
1
IOUT=30mA
70
60
50
40
30
20
10
0
0
25
50
75
100
0
125
0
25
50
o
100
125
Ambient Temperature( C)
Figure 9. Minimum Load Current vs. Temperature
Figure 10. Adjust Pin Current vs. Temperature
2.00
10.0
1.75
7.5
Power (W)
Short-Circuit Current (A)
75
o
Ambient Temperature ( C)
1.50
5.0
SOT- 223
1.25
2.5
1.00
0
25
50
75
100
0.0
25
125
50
75
100
125
o
o
Case Temperature ( C)
Junction Temperature ( C)
Figure 12. Maximum Power Dissipation
Figure 11. Short-Circuit Current vs. Temperature
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR
AZ317
Typical Performance Characteristics (Continued)
Line_transient_response
VIN=4.8V, VOUT=3.33V, CIN=1µ,COUT=10µ (TAN)
70
Ripple Rejection (dB)
VIN=8.3V
60
VOUT
VOUT=3.3V
50
VIN=5.8V
40
VIN=4.8V
30
20
10
100
1k
10k
100k
Frequency (Hz)
Figure 14. Line Transient Response
Figure 13. Ripple Rejection vs. Frequency
Line_transient_response
VIN=4.8V, VOUT=3.33V, CIN=COUT=10µ (TAN)
preload=0.1A
VOUT
IOUT=0.5A
IOUT=0.1A
Figure 15. Load Transient Response
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR
AZ317
Typical Application
AZ317
VIN
INPUT
+
*
CIN
0.1µF
OUTPUT
VOUT
R1
240Ω
ADJ
+ **
CO
1.0µF
R2
* = CIN is required if the regulator is located near power supply filter.
**= CO is needed for stability and it improves transient response.
VOUT = VREF x (1+R2/R1) + IADJ x R2
Since IADJ is controlled to less than 100µA, the error associated with this term is negligible
in most applications.
Figure 4. Typical Application of AZ317
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR
AZ317
Mechanical Dimensions
SOT-223
Unit: mm(inch)
6.300(0.248)
6.700(0.264)
)
0.250(0.010
)
4
1
0.350(0.0
2.900(0.114)
3.100(0.122)
0.900(0.035)
3.700(0.146)
3.300(0.130)
7.300(0.287)
6.700(0.264)
MIN
0.250(0.010)
1.750(0.069)
TYP
2.300(0.091)
0.610(0.024)
TYP
0.810(0.032)
4.500(0.177)
0°
10°
4.700(0.185)
0.020(0.001)
0.100(0.004)
1.500(0.059)
1.520(0.060)
1.700(0.067)
1.800(0.071)
Mar. 2007 Rev. 1. 3
BCD Semiconductor Manufacturing Limited
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Data Sheet
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR
AZ317
Mechanical Dimensions (Continued)
TO-220-3
2.580(0.102)
3.380(0.133)
0.550(0.022)
1.350(0.053)
1.160(0.046)
1.760(0.069)
14.230(0.560)
16.510(0.650)
φ1.500(0.059)
27.880(1.098)
30.280(1.192)
8.520(0.335)
9.520(0.375)
1.850(0.073)
9.660(0.380)
10.660(0.420)
φ3.560(0.140)
4.060(0.160)
Unit: mm(inch)
3°
0.200(0.008)
7°
3.560(0.140)
4.820(0.190)
2.080(0.082)
2.880(0.113)
7°
0.381(0.015)
60°
0.813(0.032)
8.763(0.345)
60°
0.381(0.015)
2.540(0.100)
2.540(0.100)
Mar. 2007 Rev. 1. 3
0.356(0.014)
0.406(0.016)
BCD Semiconductor Manufacturing Limited
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Data Sheet
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR
AZ317
Mechanical Dimensions (Continued)
1.350(0.053)
1.650(0.065)
TO-252-2(1)
6.350(0.250)
6.650(0.262)
5.200(0.205)
5.400(0.213)
Unit: mm(inch)
2.200(0.087)
2.400(0.094)
0.430(0.017)
0.580(0.023)
4.300(0.169)
5.400(0.212)
5°
0.700(0.028)
0.900(0.035)
0.500(0.020)
0.700(0.028)
2.300TYP
4.500(0.177)
4.700(0.165)
1.400(0.055)
1.780(0.070)
5°
3°
4°
0.430(0.017)
0.580(0.023)
Mar. 2007 Rev. 1. 3
4.800(0.189)
6.500(0.256)
3.800REF(0.150REF)
5.400(0.213)
5.700(0.224)
0.000(0.000)
0.127(0.005)
2.550(0.100)
2.900(0.114)
0.600(0.024)
0.900(0.035)
9.500(0.374)
9.900(0.390)
8°
BCD Semiconductor Manufacturing Limited
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Data Sheet
3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR
AZ317
Mechanical Dimensions (Continued)
TO-263-3
4.070(0.160)
4.820(0.190)
Unit: mm(inch)
3°
9.650(0.380)
10.290(0.405)
8.840(0.348)
7.420(0.292)
1.150(0.045)
1.390(0.055)
1.270(0.050)
1.390(0.055)
70°
14.760(0.581)
15.740(0.620)
1.150(0.045)
1.390(0.055)
3°
0.510(0.020)
0.990(0.039)
2.540(0.100)
2.640(0.104)
2.700(0.106)
0.360(0.014)
0.400(0.016)
7°
2.200(0.087)
5.600(0.220)
0.020(0.001)
0.250(0.010)
2.390(0.094)
2.690(0.106)
8.640(0.340)
9.650(0.380)
7°
7.980(0.314)
2°
8°
0.380(0.015)
2.540(0.100)
2.540(0.100)
0°
6°
Mar. 2007 Rev. 1. 3
2.540(0.100)
BCD Semiconductor Manufacturing Limited
13
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particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use
of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or
other rights nor the rights of others.
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