BCD AZ431L Low voltage (1.24v) adjustable precision shunt regulator Datasheet

Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
General Description
Features
The AZ431L series ICs are low voltage three-terminal
adjustable regulators with guaranteed thermal stability
over a full operation range. These ICs feature sharp
turn-on characteristics, low temperature coefficient
and low output impedance, which make them ideal
substitutes for Zener diodes in applications such as
switching power supply, charger, motherboard and
other adjustable regulators.
·
·
·
·
·
·
The output voltage can be set to any value between
1.24V and 18V with two external resistors.
·
·
The AZ431L precision reference is offered in two voltage tolerance: 0.5% and 1.0%.
Wide Programmable Precise Output Voltage from
1.24V to 18V
High Stability under Capacitive Load
Low Temperature Deviation: 3mV Typical
Low Equivalent Full-range Temperature Coefficient: 20PPM/oC Typical
Low Dynamic Output Resistance: 0.05Ω Typical
High Sink Current Capacity from 0.1mA to
100mA
Low Output Noise
Wide Operating Range of -40 to 125oC
Applications
These ICs are available in 4 packages: TO-92 (bulk or
ammo packing), SOT-23, SOT-23-5, SOT-89-3.
SOT-89-3
AZ431L
·
·
·
·
·
Graphic Card
PC Motherboard
Voltage Adapter
Switching Power Supply
Charger
TO-92 Ammo Packing
TO-92
SOT-23-5
SOT-23
Figure 1. Package Types of AZ431L
Mar. 2007 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
1
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Pin Configuration
N Package
(SOT-23)
Z Package
(TO-92 Ammo Packing)
Z Package
(TO-92)
ANODE
3
CATHODE
2
ANODE
1
REF
3
CATHODE
2
ANODE
1
REF
K Package
(SOT-23-5)
NC
1
NC
2
CATHODE
3
5
3
2
REF
CATHODE
R Package
(SOT-89-3)
ANODE
1
4
1
2
3
REF
REF ANODE CATHODE
Figure 2. Pin Configuration of AZ431L (Top View)
Functional Block Diagram
CATHODE
+
REF
-
VREF
ANODE
Figure 3. Functional Block Diagram of AZ431L
Mar. 2007 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
2
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Ordering Information
AZ431L
E1: Lead Free
Blank: Tin Lead
Circuit Type
TR: Tape and Reel or Ammo
Blank: Bulk
Voltage Tolerance
A: 0.5%
B: 1.0%
Package
Temperature Range
Voltage
Tolerance
0.5%
TO-92
SOT-23
SOT-23-5
SOT-89-3
-40 to 125oC
-40 to 125oC
-40 to 125oC
-40 to 125oC
Package
Z: TO-92
N: SOT-23
K: SOT-23-5
R: SOT-89-3
Part Number
Tin Lead
Lead Free
Marking ID
Tin Lead
Lead Free
Packing
Type
AZ431LAZ
AZ431LAZ-E1
AZ431LAZ
AZ431LAZ-E1
Bulk
0.5%
AZ431LAZTR
AZ431LAZTR-E1
AZ431LAZ
AZ431LAZ-E1
Ammo
1.0%
AZ431LBZ
AZ431LBZ-E1
AZ431LBZ
AZ431LBZ-E1
Bulk
1.0%
AZ431LBZTR
AZ431LBZTR-E1
AZ431LBZ
AZ431LBZ-E1
0.5%
AZ431LANTR-E1
1.0%
EA6
AZ431LBNTR-E1
AZ431LAKTR-E1
K41
Ammo
Tape & Reel
EA7
Tape & Reel
E5A
Tape & Reel
0.5%
AZ431LAKTR
1.0%
AZ431LBKTR
AZ431LBKTR-E1
K42
E6A
Tape & Reel
0.5%
AZ431LARTR
AZ431LARTR-E1
R41A
E41A
Tape & Reel
1.0%
AZ431LBRTR
AZ431LBRTR-E1
R41B
E41B
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Mar. 2007 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
3
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Value
Unit
Cathode Voltage
VKA
20
V
Cathode Current Range (Continuous)
IKA
-100 to 100
mA
Reference Input Current Range
IREF
10
mA
Power Dissipation
PD
Z, R Package
770
N, K Package
370
mW
TJ
Junction Temperature
TSTG
Storage Temperature Range
oC
150
-65 to 150
oC
Note 1: 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
Symbol
Min
Max
Unit
Cathode Voltage
VKA
VREF
18
V
Cathode Current
IKA
0.1
100
mA
-40
125
Operating Ambient Temperature Range
Mar. 2007 Rev. 1. 7
o
C
BCD Semiconductor Manufacturing Limited
4
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Electrical Characteristics
(Operating Conditions: TA=25oC, unless otherwise noted.)
Test
Symbol
Circuit
Parameter
Reference Voltage
0.5%
1.0%
Deviation of Reference Voltage
Over Full Temperature Range
4
4
VREF
Conditions
Min
Typ
Max
1.234
1.240
1.246
1.228
1.240
1.252
0oC to 70oC
2
10
-40oC
3
10
4
15
-0.5
-1.5
mV/V
0.15
0.4
µA
TA=-40 to 125oC
0.1
0.4
µA
VKA=VREF
55
80
µA
VREF=0, VKA=18V
0.04
0.10
µA
VKA=6, VREF=0
0.01
0.05
VKA=VREF, IKA=1 to 100mA
f≤ 1.0kHz
0.05
0.15
VKA=VREF, IKA=10mA
VKA=VREF
∆VREF
IKA=10mA
to
85oC
-40oC to 125oC
∆VREF IKA=10mA,
∆VKA ∆VKA:VREF to 16V
Ratio of Change in VREF to the
Change in Cathode Voltage
5
Reference Input Current
5
IREF
Deviation of Reference Current
Over Full Temperature Range
5
∆IREF
Minimum Cathode Current for
Regulation
4
IKA
(Min)
Off-state Cathode Current
6
IKA
(Off)
Dynamic Impedance
4
ZKA
IKA=10mA, R1=10KΩ, R2=∞
IKA=10mA, R1=10KΩ, R2=∞
Mar. 2007 Rev. 1. 7
Unit
V
mV
Ω
BCD Semiconductor Manufacturing Limited
5
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Electrical Characteristics (Continued)
R1
VKA
VIN
IKA
VREF
Figure 4. Test Circuit 4 for VKA=VREF
R3
VIN
VKA
IKA
R1
IREF
VKA=VREF*(1+R1/R2)+ IREF*R1
R2
VREF
Figure 5. Test Circuit 5 for VKA>VREF
VKA
VIN
IOFF
Figure 6. Test Circuit 6 for IOFF
Mar. 2007 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
6
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Typical Performance Characteristics
1.242
0.18
VKA=VREF
1.241
R1=10KΩ
R2=Infinite
IKA=10mA
IKA=10mA
Reference Current (µA)
Reference Voltage (V)
0.17
1.240
1.239
1.238
1.237
0.15
0.14
0.13
1.236
1.235
-50
0.16
-25
0
25
50
75
100
125
0.12
-50
150
-25
0
25
50
75
100
125
o
o
Ambient Temperature ( C)
Ambient Temperature ( C)
Figure 7. Reference Voltage vs. Ambient Temperature
Figure 8. Reference Current vs. Ambient Temperature
400
150
VKA=VREF
100
VKA=VREF
300
o
o
TA=25 C
TA=25 C
Cathode Current (µA)
Cathode Current (mA)
200
50
0
-50
100
0
-100
-200
-100
-300
-150
-1
0
-1
1
0
1
Cathode Voltage (V)
Cathode Voltage (V)
Figure 9. Cathode Current vs. Cathode Voltage
Figure 10. Cathode Current vs. Cathode Voltage
Mar. 2007 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
7
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Typical Performance Characteristics (Continued)
Output
70
6.8K
0
TA=25 C
60
360
IKA=10mA
50
Voltage Gain (dB)
IKA
10µF
40
30
20
4.3K
10
5V
0
-10
1k
10k
100k
GND
Small Signal Frequency (Hz)
Figure 11. Small Signal Voltage Gain vs. Frequency
10
Dynamic Impedance (Ω)
Output
100Ω
1
IKA=1mA to 100mA
IKA
50Ω
0.1
0.01
1k
GND
10k
100k
1M
Frequency (Hz)
Figure 12. Dynamic Impedance vs. Frequency
Mar. 2007 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
8
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Typical Performance Characteristics (Continued)
Input and output voltage (V)
3
Input
Output
R1
1.8KΩ
2
Pulse
Generator
f=100KHz
1
R2
50Ω
Output
GND
0
-1
0
1
2
3
4
5
6
Time (µS)
Figure 13. Pulse Response of Input and Output Voltage
-0.30
IKA=10mA
∆VKA=VREF to 16V
Ratio of ∆VREF to ∆VKA (mV/V)
-0.35
-0.40
-0.45
-0.50
-0.55
-40
-20
0
20
40
60
80
100
120
o
Ambient Temperature ( C)
Figure 14. Ratio of Delta Reference Voltage to the Ratio of
Cathode Voltage vs. Ambient Temperature
Mar. 2007 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
9
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Typical ApplicationS
R3
V OUT
VIN
R1
VOUT=(1+R1/R2)*VREF
V REF
AZ431L
R2
Figure 15. Shunt Regulator
VIN
VOUT
R1
R4
R2
VOUT=(1+R2/R3)*VREF
VREF
AZ431L
AZ432
R3
Figure 16. High Current Shunt Regulator
R2
VIN
IOUT
IOUT=VREF/R2+IKA
R1
AZ431L
Figure17. Current Source or Current Limit
Mar. 2007 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
10
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Typical Application (Continued)
VIN
AZ1117
5V/1A
R1
8.2K
R2
250
AZ431L
R3
250
Figure18. Precision 5V 1A Regulator
R3
C1
R4
VOUT
R2 680
R5
R1
Q1
3
COMP
C2
U2
2
AZ431L
PWM Controller
VFB
4
PS521
Figure 19. PWM Converter with Reference
Mar. 2007 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
11
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Mechanical Dimensions
TO-92
Unit: mm(inch)
1.100(0.043)
3.430(0.135)
MIN
3.700(0.146)
3.300(0.130)
1.400(0.055)
0.360(0.014)
0.510(0.020)
0.000(0.000)
0.380(0.015)
Φ1.600(0.063)
MAX
4.700(0.185)
0.380(0.015)
0.550(0.022)
14.100(0.555)
14.500(0.571)
4.300(0.169)
4.400(0.173)
4.700(0.185)
1.270(0.050)
TYP
2.440(0.096)
2.640(0.104)
Mar. 2007 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
12
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Mechanical Dimensions (Continued)
TO-92 Ammo Packing
12.400(0.488)
13.000(0.512)
Unit: mm(inch)
±1.000(0.039)
±1.000(0.039)
4.400(0.173)
4.600(0.181)
ΔP
Δh
3.400(0.134)
3.600(0.142)
4.400(0.173)
4.600(0.181)
19.000(0.748)
21.000(0.827)
0.380(0.015)
0.550(0.022)
2.200(0.087)
2.800(0.110)
1.000 (0.039) MAX
15.500(0.610)
16.500(0.650)
5.500(0.217)
6.500(0.256)
2.500(0.098)
MIN
3.800(0.150)
4.200(0.165)
17.500(0.689)
19.000(0.748)
2.200(0.087)
2.800(0.110)
6.050(0.238)
6.650(0.262)
8.500(0.335)
9.500(0.374)
3.550(0.140)
4.150(0.163)
12.500(0.492)
12.900(0.508)
0.150(0.006)
0.250(0.010)
0.350(0.014)
0.450(0.018)
Mar. 2007 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
13
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Mechanical Dimensions (Continued)
SOT-23
Mar. 2007 Rev. 1. 7
Unit: mm(inch)
BCD Semiconductor Manufacturing Limited
14
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Mechanical Dimensions (Continued)
SOT-23-5
Unit: mm(inch)
0.300(0.012)
0.600(0.024)
1.500(0.059)
1.700(0.067)
0.100(0.004)
0.200(0.008)
2.950(0.116)
2.650(0.104)
2.820(0.111)
3.020(0.119)
0.200(0.008)
0.700(0.028)
REF
0.300(0.012)
0.400(0.016)
0°
8°
1.800(0.071)
2.000(0.079)
1.250(0.049)
1.050(0.041)
0.950(0.037)
TYP
0.000(0.000)
0.100(0.004)
1.050(0.041)
1.150(0.045)
Mar. 2007 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
15
Data Sheet
LOW VOLTAGE (1.24V) ADJUSTABLE PRECISION SHUNT REGULATOR
AZ431L
Mechanical Dimensions (Continued)
SOT-89-3
Unit: mm(inch)
4.400(0.173)
4.600(0.181)
1.630(0.064)
1.400(0.055)
1.600(0.063)
1.830(0.072)
0.000(0.000)
0.076(0.003)
1.400(0.055)*
1.200(0.047)
0.900(0.035)
3.950(0.156)
4.250(0.167)
R0.200(0.008)
2.300(0.091)
2.600(0.102)
3°
10°
0.360(0.014)
0.360(0.014)
0.360(0.014)
0.520(0.020)
0.480(0.019)
0.440(0.017)
0.440(0.017)
3.000(0.118)
0.560(0.022)
3°
10°
R0.150(0.006)
Mar. 2007 Rev. 1. 7
BCD Semiconductor Manufacturing Limited
16
http://www.bcdsemi.com
IMPORTANT NOTICE
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any
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.
MAIN SITE
BCD Semiconductor Manufacturing Limited
BCD Semiconductor Manufacturing Limited
- Wafer Fab
Shanghai SIM-BCD Semiconductor Manufacturing Limited
800, Yi Shan Road, Shanghai 200233, China
Tel: +86-21-6485 1491, Fax: +86-21-5450 0008
- IC Design Group
Advanced Analog Circuits (Shanghai) Corporation
8F, Zone B, 900, Yi Shan Road, Shanghai 200233, China
Tel: +86-21-6495 9539, Fax: +86-21-6485 9673
REGIONAL SALES OFFICE
Shenzhen Office
Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. Shenzhen Office
Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office
Room E, 5F, Noble Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen 518026, China
Tel: +86-755-8826 7951
Fax: +86-755-8826 7865
Taiwan Office
BCD Semiconductor (Taiwan) Company Limited
4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei,
Taiwan
Tel: +886-2-2656 2808
Fax: +886-2-2656 2806
USA Office
BCD Semiconductor Corporation
30920 Huntwood Ave. Hayward,
CA 94544, U.S.A
Tel : +1-510-324-2988
Fax: +1-510-324-2788
Similar pages