Data Sheet
VOLTAGE DETECTOR
General Description
The AZ70XX series ICs are under voltage detectors
with a built in voltage threshold and low power con-
sumption. The AZ70XX are specifically designed to
accurately monitor power supplies.
The AZ70XX use a precision on-chip voltage refer-
ence and a comparator to measure the input operating
voltage. These ICs can accurately reset the system after
detecting voltage at the time of switching power on and
instantaneous power off in various CPU systems and
other logic systems. The detect voltage thresholds are
2.3V/2.5V/2.7V/2.9V/3.1V/3.3V/4.2V/4.5Vfor
AZ7023/25/27/29/31/33/42/45 respectively. Built in
hysteresis helps to prevent erratic operation in the pres-
ence of noise.
The AZ70XX series are available in 2 standard pack-
ages: TO-92 (bulk or ammo packing) and SOT-89.
AZ70XX
Features
·
Low Current Consumption:
I
CCL
=300
µA
Typical
I
CCH
=30
µA
Typical
Low Minimum Operating Voltage for Output
Resetting: 0.8V Typical
Built in Hysteresis Voltage: 50mV Typical
Open Collector Output
Extended Temperature Range: -40 to 85
o
C
·
·
·
·
Applications
·
·
·
·
·
Low Battery Voltage Detector
Power Fail Indicator
Processor Reset Generator
Battery Backup Control
Home Electric Appliances
TO-92(Bulk Packing)
TO-92(Ammo Packing)
SOT-89
Figure 1. Package Types of AZ70XX
Oct. 2011 Rev. 2. 2
1
BCD Semiconductor Manufacturing Limited
Data Sheet
VOLTAGE DETECTOR
AZ70XX
Pin Configuration
Z Package
(TO-92(Bulk Packing))
Z Package
(TO-92(Ammo Packing))
R Package
(SOT-89)
3
2
1
OUT
GND
V
CC
3
2
1
OUT
GND
V
CC
1
2
3
V
CC
GND OUT
Figure 2. Pin Configuration of AZ70XX (Top View)
Functional Block Diagram
V
CC
OUT
+
-
GND
Figure 3. Functional Block Diagram of AZ70XX
Oct. 2011 Rev. 2. 2
2
BCD Semiconductor Manufacturing Limited
Data Sheet
VOLTAGE DETECTOR
Ordering Information
AZ70
Circuit Type
Detect Voltage
23: 2.3V 31: 3.1V
25: 2.5V 33: 3.3V
27: 2.7V 42: 4.2V
29: 2.9V 45: 4.5V
Temperature
Range
Detect
Voltage
2.3V
2.5V
2.7V
2.9V
TO-92
-40 to 85
o
C
3.1V
3.3V
4.2V
4.5V
2.3V
2.5V
2.7V
SOT-89
-40 to 85
o
C
2.9V
3.1V
3.3V
4.2V
4.5V
Part Number
Lead Free
AZ7023Z-E1
AZ7023ZTR-E1
AZ7025Z-E1
AZ7025ZTR-E1
AZ7027Z-E1
AZ7027ZTR-E1
AZ7029Z-E1
AZ7029ZTR-E1
AZ7031Z-E1
AZ7031ZTR-E1
AZ7033Z-E1
AZ7033ZTR-E1
AZ7042Z-E1
AZ7042ZTR-E1
AZ7045Z-E1
AZ7045ZTR-E1
AZ7023RTR-E1
AZ7025RTR-E1
AZ7027RTR-E1
AZ7029RTR-E1
AZ7031RTR-E1
AZ7033RTR-E1
AZ7042RTR-E1
AZ7045RTR-E1
Green
AZ7023Z-G1
AZ7023ZTR-G1
AZ7025Z-G1
AZ7025ZTR-G1
AZ7027Z-G1
AZ7027ZTR-G1
AZ7029Z-G1
AZ7029ZTR-G1
AZ7031Z-G1
AZ7031ZTR-G1
AZ7033Z-G1
AZ7033ZTR-G1
AZ7042Z-G1
AZ7042ZTR-G1
AZ7045Z-G1
AZ7045ZTR-G1
AZ7023RTR-G1
AZ7025RTR-G1
AZ7027RTR-G1
AZ7029RTR-G1
AZ7031RTR-G1
AZ7033RTR-G1
AZ7042RTR-G1
AZ7045RTR-G1
AZ70XX
-
E1: Lead Free
G1: Green
TR: Tape and Reel or Ammo
Blank: Bulk
Package
Z: TO-92
R: SOT-89
Marking ID
Lead Free
AZ7023Z-E1
AZ7023Z-E1
AZ7025Z-E1
AZ7025Z-E1
AZ7027Z-E1
AZ7027Z-E1
AZ7029Z-E1
AZ7029Z-E1
AZ7031Z-E1
AZ7031Z-E1
AZ7033Z-E1
AZ7033Z-E1
AZ7042Z-E1
AZ7042Z-E1
AZ7045Z-E1
AZ7045Z-E1
E723
E725
E727
E729
E731
E733
E742
E745
Green
AZ7023Z-G1
AZ7023Z-G1
AZ7025Z-G1
AZ7025Z-G1
AZ7027Z-G1
AZ7027Z-G1
AZ7029Z-G1
AZ7029Z-G1
AZ7031Z-G1
AZ7031Z-G1
AZ7033Z-G1
AZ7033Z-G1
AZ7042Z-G1
AZ7042Z-G1
AZ7045Z-G1
AZ7045Z-G1
G70A
G70G
G70B
G70C
G70H
G70D
G70E
G70F
Packing
Type
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
Bulk
Ammo
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Tape & Reel
Package
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with
"G1" suffix are available in green packages.
Oct. 2011 Rev. 2. 2
3
BCD Semiconductor Manufacturing Limited
Data Sheet
VOLTAGE DETECTOR
Absolute Maximum Ratings (Note 1)
Parameter
Supply Voltage
Power Dissipation (Package Limitations,
T
A
=25
o
C)
Operating Junction Temperature
Storage Temperature Range
Symbol
V
CC
P
D
T
J
T
STG
Value
-0.3 to 20
TO-92 Package: 400
SOT-89 Package: 500
150
-65 to 150
Unit
V
mW
o
C
o
C
AZ70XX
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 Maxi-
mum Ratings" for extended periods may affect device reliability.
Recommended Operating Conditions
Parameter
Supply Voltage
Operating Temperature Range
Symbol
V
CC
T
A
-40
Min
Max
18
85
Unit
V
o
C
Oct. 2011 Rev. 2. 2
4
BCD Semiconductor Manufacturing Limited
Data Sheet
VOLTAGE DETECTOR
Electrical Characteristics
T
A
=25
o
C, unless otherwise specified.
Parameter
Symbol
Conditions
AZ7023R/Z
AZ7025R/Z
R
L
=200Ω
(Note 2)
V
OL
≤
0.4V
AZ7027R/Z
AZ7029R/Z
AZ7031R/Z
AZ7033R/Z
AZ7042R/Z
AZ7045R/Z
Low-level Output Voltage
Output Leakage Current
Hysteresis Voltage
Detect Voltage Temperature
Coefficient
Circuit Current at On Time
Circuit Current at Off Time
Minimum Operating Voltage
V
OL
I
OH
V
HYS
∆V
DET
/(V
DET
×
∆T)
I
CCL
I
CCH
V
OPR
V
CC
=V
DET
(min)-0.05V
R
L
=200Ω (Note 2)
V
CC
=18V
R
L
=200Ω (Note 2)
R
L
=200Ω (Note 2)
V
CC
=V
DET
(min)-0.05V
V
CC
=5.25V
R
L
=200Ω (Note 2)
V
OL
≤
0.4V
V
CC
changed from 5.25V to
V
DET
(min)-0.05V, R
L
=1.0KΩ,
C
L
=100p (Note 3)
V
CC
changed from V
DET
(min)-
0.05V to 5.25V, R
L
=1.0KΩ,
C
L
=100p (Note 3)
V
CC
=V
DET
(min)-0.05V
T
A
=25
o
C (Note 4)
V
CC
=V
DET
(min)-0.05V
T
A
=-40 to 85
o
C (Note 4)
TO-92
SOT-89
20
mA
16
72
74
o
AZ70XX
Min
2.15
2.35
2.55
2.75
2.95
3.15
4.05
4.35
Typ
2.3
2.5
2.7
2.9
3.1
3.3
4.2
4.5
Max
2.45
2.65
2.85
3.05
3.25
3.45
4.35
4.65
0.4
0.1
Unit
Detect Voltage
V
DET
V
V
µA
mV
% /
o
C
30
50
±0.01
300
30
0.8
100
500
50
µA
µA
V
“L”
Transmission Delay Time
tpHL
10
µs
“H”
Transmission Delay Time
tpLH
15
µs
I
OL
Ⅰ
Output Current at On Time
I
OL
Ⅱ
Thermal Resistance
(Junction to Case)
θ
JC
C/W
Note 2: See test circuit 1 and Figure 12.
Note 3: See test circuit 2 and Figure 12.
Note 4: See test circuit 3. Adjusting the regulative power source until the reading value of voltage meter V is 0.4V, the reading
value of current meter A is defined as "Output Current at On Time".
Oct. 2011 Rev. 2. 2
5
BCD Semiconductor Manufacturing Limited
京公网安备 11010802033920号
EEWORLD
