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Электронный компонент: AZ432BN-TRE1

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LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Data Sheet
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
1
General Description
The AZ432 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
1.25V and 18V with two external resistors.
The AZ432 precision reference is offered in two band-
gap tolerance: 0.5% and 1%.
These ICs are available in 4 packages: TO-92, SOT-
23-3, SOT-23-5, SOT-89.
Features
Wide Programmable Precise Output Voltage from
1.25V to 18V
High Stability under Capacitive Load
Low Temperature Deviation: 3mV Typical
Low Equivalent Full-Range Temperature Coeffi-
cient: 20PPM/
o
C Typical
Low Dynamic Output Resistance: 0.05
Typical
High Sink Current Capacity from 55
A to 100
mA
Low Output Noise
Wide Operating Range of -40 to 125
o
C
Applications
Graphic Card
PC Motherboard
Voltage Adapter
Switching Power Supply
Charger
Figure 1. Package Types of AZ432
SOT-23-5
SOT-23-3
TO-92
SOT-89
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Data Sheet
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
2
Figure 2. Pin Configuration of AZ432 (Top View)
Z Package
(TO-92)
(SOT-23-3)
N Package
R Package
(SOT-89)
Figure 3. Functional Block Diagram of AZ432
Functional Block Diagram
K Package
(SOT-23-5)
ANODE
NC
CATHODE
CATHODE
ANODE
REF
REF
ANODE CATHODE
REF
3
1
2
1
2
3
3
2
1
4
5
NC
4
REF
V
REF
CATHODE
ANODE
+
-
CATHODE
ANODE
REF
1
2
3
Pin Configuration
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Data Sheet
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
3
Ordering Information
Circuit Type
Bandage Tolerance
B: 1%
A: 0.5%
E1: Lead Free
Blank: Tin Lead
AZ432 -
Package
Tempera-
ture Range
Voltage
Tolerance
Part Number
Marking ID
Packing
Type
Tin Lead
Lead Free
Tin Lead
Lead Free
TO-92
-40 to 125
o
C
0.50%
AZ432AZ
AZ432AZ-E1
AZ432AZ
AZ432AZ-E1
Bulk
0.50%
AZ432AZTR
AZ432AZTR-E1
AZ432AZ
AZ432AZ-E1
Ammo
1%
AZ432BZ
AZ432BZ-E1
AZ432BZ
AZ432BZ-E1
Bulk
1%
AZ432BZTR
AZ432BZTR-E1
AZ432BZ
AZ432BZ-E1
Ammo
SOT-23-3
-40 to 125
o
C
0.50%
AZ432ANTR
AZ432ANTR-E1
N48
EA8
Tape & Reel
1%
AZ432BNTR
AZ432BNTR-E1
N49
EA9
Tape & Reel
SOT-23-5
-40 to 125
o
C
0.50%
AZ432AKTR
AZ432AKTR-E1
K43
E7A
Tape & Reel
1%
AZ432BKTR
AZ432BKTR-E1
K44
E8A
Tape & Reel
SOT-89
-40 to 125
o
C
0.50%
AZ432ARTR
AZ432ARTR-E1
R42A
E42A
Tape & Reel
1%
AZ432BRTR
AZ432BRTR-E1
R42B
E42B
Tape & Reel
Package
Z: TO-92
TR: Tape and Reel or Ammo
Blank: Tube or Bulk
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
N: SOT-23-3
K: SOT-23-5
R: SOT-89
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Data Sheet
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
4
Parameter
Symbol
Value
Unit
Cathode Voltage
V
KA
20
V
Cathode Current Range (Continuous)
I
KA
-100 to 100
mA
Reference Input Current Range
I
REF
10
mA
Power Dissipation
P
D
Z,R Package
770
mW
N,K Package
370
Storage Temperature Range
T
STG
-65 to 150
o
C
Package Thermal Impedance
Q
JA
TO-92
130
o
C/W
SOT-23-3
330
SOT-23-5
250
SOT-89
100
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.
Parameter
Symbol
Min
Max
Unit
Cathode Voltage
V
KA
V
REF
18
V
Cathode Current
I
KA
0.1
100
mA
Operating Ambient Temperature Range
-40
125
o
C
Recommended Operation Ratings
Absolute Maximum Ratings (Note 1)
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Data Sheet
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
5
(Typical and limits apply for T
J
=25
o
C unless otherwise noted.)
Parameter
Test
Circuit
Symbol
Conditions
Min
Typ
Max
Unit
Reference Voltage
0.5%
4
V
REF
V
KA
=V
REF,
I
KA
=10mA
1.244
1.250
1.256
V
1%
1.238
1.250
1.262
Deviation of Reference Volt-
age Over-Temperature
4
V
REF
V
KA
=V
REF
I
KA
=10mA
0 to 70
o
C
2 10
mV
-40 to 85
o
C
3
10
Ratio of Change in V
REF
to the
Change in Cathode Voltage
5
V
REF
V
KA
I
KA
=10mA,
V
KA
: V
REF
to 16V
-0.5
-1.5
mV/V
Reference Input Current
5
I
REF
I
KA
=10mA, R1=10K
, R2=
0.15
0.4
A
Deviation of Reference Cur-
rent Over Full Temperature
Range
5
I
REF
I
KA
=10mA, R1=10K
, R2=
T
A
=-40 to 85
o
C
0.1
0.4
A
Minimum Cathode Current for
Regulation
4
I
KA
(MIN)
V
KA
=V
REF
55
80
A
Off-State Cathode
Current
6
I
KA
(OFF)
V
REF
=0, V
KA
=18V
0.04
0.10
A
V
KA
=6V, V
REF
=0
0.01
0.05
Dynamic Impedance
4
Z
KA
V
KA
=V
REF
, I
KA
=1 to 100mA
f
1.0kHz
0.05
0.15
Electrical Characteristics
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Data Sheet
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
6
Figure 4. Test Circuit 4 for V
KA
=V
REF
Figure 5. Test Circuit 5 for V
KA
>V
REF
Figure 6. Test Circuit 6 for I
OFF
I
OFF
V
IN
V
KA
Electrical Characteristics (Continued)
V
IN
V
KA
R1
I
KA
V
REF
V
IN
V
KA
I
KA
R1
R2
V
REF
V
KA
=V
REF
(1+R1/R2)+ I
REF
R1
I
REF
R3
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Data Sheet
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
7
Figure 7. Reference Voltage vs. Ambient Temperature
Figure 8. Reference Current vs. Ambient Temperature
Figure 9. Cathode Current vs. Cathode Voltage
Figure 10. Current vs. cathode Voltage
-50
-25
0
25
50
75
100
0.12
0.13
0.14
0.15
0.16
0.17
0.18

I
KA
=10mA
R1=10K
Ambient Temperature (
o
C)
Ref
e
rence Curren
t
(
A)
R2=
-1
0
1
-150
-100
-50
0
50
100
150
Ca
t
hode
Current (m
A)
Cathode Voltage (V)
V
KA
=V
REF
T
A
=25
o
C
-1.0
-0.5
0.0
0.5
1.0
1.5
-300
-200
-100
0
100
200
300
400
Cathode
Current (
A)
Cathode Voltage (V)
V
KA
=V
REF
T
A
=25
o
C
-50
-25
0
25
50
75
100
125
150
1.247
1.248
1.249
1.250
1.251
1.252
1.253
Ambient Temperature (
o
C)
Ref
e
rence V
o
l
t
age

(V)
V
KA
=V
REF
I
KA
=10mA
Typical Performance Characteristics
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Data Sheet
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
8
100
1k
10k
100k
0
10
20
30
40
50
60
500K
V
o
lt
age Ga
in (d
B)
Small Signal Frequency (HZ)
I
KA
=10mA
T
A
=25
o
C
10
F
4.3K
6.8K
I
KA
Output
360
GND
Figure 12. Dynamic Impedance vs. Frequency
GND
Output
50
100
I
KA
Figure 11. Small Signal Voltage Gain vs. Frequency
1k
10k
100k
1M
0.01
0.1
1
10
Impedance (
)
Frequency (Hz)
Typical Performance Characteristics (Continued)
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Data Sheet
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
9
Figure 13. Pulse Response of Input and Output Voltage
Pulse
Generator
f=100KHz
R2
50
Output
GND
R1
1.8K
-40
0
40
80
120
-0.5
-0.4
-0.3
I
KA
=10mA
V
KA
=V
REF
to 16V.
Ra
t
i
o
of
V
RE
F
to
V
KA
(m
V/
V)
Ambient Temperature (
o
C)
Figure 14. Ratio of Delta Reference Voltage to the Ratio of Delta
Cathode Voltage vs. Ambient Temperature
Typical Performance Characteristics (Continued)
-1
0
1
2
3
4
5
6
0
1
2
3
Input
Input
and output
v
o
ltage (V
)
Time (
S)
Output
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Data Sheet
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
10
Figure 15: Shunt Regulator
Figure 16: High Current Shunt Regulator
Figure17: Current Source or Current Limit
V
O
=(1+R1/R2) V
REF
V
O
=(1+R2/R3) V
REF
I
OUT
= V
REF
/R2 + I
KA
V
IN
V
OUT
R1
R2
V
REF
AZ432
R3
I
OUT
V
IN
AZ432
R2
R1
V
IN
V
OUT
R4
R1
R2
V
REF
R3
AZ432
V
IN
V
OUT
R4
R1
R2
V
REF
R3
AZ432
Typical Application
S
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Data Sheet
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
11
Figure 19: PWM Converter with Reference
Figure18: Precision 2.5V/1A Regulator
AZ1117
V
IN
2.5V/1A
8.2K
AZ432
R1
R2
R3
250
250
PWM Controller
C1
R1
R2 680
U2
3
4
PS521
C2
2
R3
R4
R5
V
OUT
AZ432
Q1
COMP
VFB
Typical Application (Continued)
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Data Sheet
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
12
Mechanical Dimensions
Unit: mm (inch)
2.440(0.096)
2.640(0.104)
0.380(0.015)
0.550(0.022)
1.600(0.063)
MAX
1
4
.100
(0
.55
5)
1
4
.500
(0
.57
1)
1.270(0.050)
TYP
3.3
0
0
(0.1
30
)
3.7
0
0
(0.1
46
)
4.3
00(
0.
169
)
4.7
00(
0.
185
)
1.100(0.043)
1.400(0.055)
4.400(0.173)
4.700(0.185)
3.430(0.135)
MIN
0.360(0.014)
0.510(0.020)
0.000(0.000)
0.380(0.015)
TO-92
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Data Sheet
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
13
Mechanical Dimensions (Continued)
SOT-23-3
Unit: mm(inch)
2.300(0.091)
2.500(0.098)
1.200(0.047)
1.400(0.055)
0.920(0.036)
0.980(0.039)
0.390(0.015)
0.450(0.018)
1.900(0.075)REF
2.800(0.110)
3.000(0.118)
2.0
3.0
0.500(0.020)
0.700(0.028)
1.050(0.041)REF
0.020(0.001)
0.100(0.004)
0.900(0.035)
1.100(0.043)
4
R0.100(0.004)
7.0
7.0
0.550(0.022)REF
0.200(0.008)MIN
0.100(0.004) GAUGE PLANE
0.080(0.003)
0.150(0.006)
R0.100(0.004)
0.0~10.0
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Data Sheet
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
14
SOT-23-5
Unit: mm(inch)
2.800(0.110)
2
.
7
0
0
(
0
.
1
0
6
)
4
4
1
.
5
0
0
(
0
.
0
5
9
)
R0.100(0.004)
0.010(0.0004)
0
.
9
5
0
(
0
.
0
3
7
)
0.300(0.012)
0.925(0.036)
0.650(0.026)
0.080(0.003)
R0.100(0.004)
0.200(0.008)
0
.
3
0
0
(
0
.
0
1
2
)
15
5
3.000(0.118)
1
.
7
0
0
(
0
.
0
6
7
)
2
.
9
0
0
(
0
.
1
1
4
)
0.975(0.038)
0.500(0.020)
15
5
1
.
4
5
0
(
0
.
0
5
7
)
0.150(0.006)
1.050(0.041)
R0.200(0.008)
0.300(0.012)
0.220(0.009)
0
.
6
0
0
(
0
.
0
2
4
)
Mechanical Dimensions (Continued)
LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432
Data Sheet
Apr. 2005 Rev. 1. 2
BCD Semiconductor Manufacturing Limited
15
Mechanical Dimensions (Continued)
SOT-89
Unit: mm(inch)
1.400(0.055)*
1.630(0.064)
4.400(0.173)
0.360(0.014)
0.440(0.017)
3.000(0.118)
0
.
9
0
0
(
0
.
0
3
5
)
2.300(0.091)
3
.
9
5
0
(
0
.
1
5
6
)
1.400(0.055)
0.360(0.014)
10
3
10
R0.200(0.008)
R0.150(0.006)
0.000(0.000)
3
1.600(0.063)
0.440(0.017)
0.560(0.022)
2.600(0.102)
0.480(0.019)
4.600(0.181)
1.830(0.072)
1
.
2
0
0
(
0
.
0
4
7
)
4
.
2
5
0
(
0
.
1
6
7
)
0.076(0.003)
0.360(0.014)
0.480(0.019)
8F, B Zone, 900 Yi Shan Road, Shanghai 200233, PRC Tel: +86-21-6495 9539, Fax: +86-21-6485 9673
BCD Semiconductor (Taiwan) Company Limited
Room 2210, 22nd Fl, 333, Keelung Road, Sec. 1, TaiPei (110), Taiwan Tel: +886-2-2758 6828, Fax: +886-2-2758 6892
IMPORTANT NOTICE
BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any pro-
ducts 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 Limi-
ted does not convey any license under its patent rights or other rights nor the rights of others.
http://www.bcdsemi.com
BCD Semiconductor Corporation
3170 De La Cruz Blvd, Suite # 105 Santa Clara, CA 95054-2411, U.S.A Tel: +1-408-988 6388, Fax: +1-408-988 6386
Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.
800 Yi Shan Road, Shanghai 200233, PRC Tel: +86-21-6485-1491, Fax: +86-21-5450-0008
Advanced Analog Circuits (Shanghai) Corporation