BCDSEMI AZ7025Z-G1

Data Sheet
VOLTAGE DETECTOR
AZ70XX
General Description
Features
The AZ70XX series ICs are under voltage detectors
with a built in voltage threshold and low power consumption. The AZ70XX are specifically designed to
accurately monitor power supplies.
·
·
The AZ70XX use a precision on-chip voltage reference 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 presence of noise.
·
·
·
Applications
·
·
·
·
·
The AZ70XX series are available in 2 standard packages: TO-92 (bulk or ammo packing) and SOT-89.
TO-92(Bulk Packing)
Low Current Consumption:
ICCL=300µA Typical
ICCH=30µA 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 85oC
Low Battery Voltage Detector
Power Fail Indicator
Processor Reset Generator
Battery Backup Control
Home Electric Appliances
TO-92(Ammo Packing)
SOT-89
Figure 1. Package Types of AZ70XX
Oct. 2011 Rev. 2. 2
BCD Semiconductor Manufacturing Limited
1
Data Sheet
VOLTAGE DETECTOR
AZ70XX
Pin Configuration
Z Package
(TO-92(Bulk Packing))
Z Package
(TO-92(Ammo Packing))
3
OUT
3
OUT
2
GND
2
GND
1
VCC
1
VCC
R Package
(SOT-89)
1
2
VCC
3
GND OUT
Figure 2. Pin Configuration of AZ70XX (Top View)
Functional Block Diagram
VCC
OUT
+
-
GND
Figure 3. Functional Block Diagram of AZ70XX
Oct. 2011 Rev. 2. 2
BCD Semiconductor Manufacturing Limited
2
Data Sheet
VOLTAGE DETECTOR
AZ70XX
Ordering Information
-
AZ70
E1: Lead Free
G1: Green
Circuit Type
TR: Tape and Reel or Ammo
Blank: Bulk
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
Package
Temperature
Range
Detect
Voltage
2.3V
2.5V
2.7V
2.9V
TO-92
-40 to 85oC
3.1V
3.3V
4.2V
-40 to 85oC
Part Number
Lead Free
Marking ID
Green
Lead Free
Green
Packing
Type
AZ7023Z-E1
AZ7023Z-G1
AZ7023Z-E1
AZ7023Z-G1
Bulk
AZ7023ZTR-E1
AZ7023ZTR-G1
AZ7023Z-E1
AZ7023Z-G1
Ammo
AZ7025Z-E1
AZ7025Z-G1
AZ7025Z-E1
AZ7025Z-G1
Bulk
AZ7025ZTR-E1
AZ7025ZTR-G1
AZ7025Z-E1
AZ7025Z-G1
Ammo
AZ7027Z-E1
AZ7027Z-G1
AZ7027Z-E1
AZ7027Z-G1
Bulk
AZ7027ZTR-E1
AZ7027ZTR-G1
AZ7027Z-E1
AZ7027Z-G1
Ammo
AZ7029Z-E1
AZ7029Z-G1
AZ7029Z-E1
AZ7029Z-G1
Bulk
AZ7029ZTR-E1
AZ7029ZTR-G1
AZ7029Z-E1
AZ7029Z-G1
Ammo
AZ7031Z-E1
AZ7031Z-G1
AZ7031Z-E1
AZ7031Z-G1
Bulk
AZ7031ZTR-E1
AZ7031ZTR-G1
AZ7031Z-E1
AZ7031Z-G1
Ammo
AZ7033Z-E1
AZ7033Z-G1
AZ7033Z-E1
AZ7033Z-G1
Bulk
AZ7033ZTR-E1
AZ7033ZTR-G1
AZ7033Z-E1
AZ7033Z-G1
Ammo
AZ7042Z-E1
AZ7042Z-G1
AZ7042Z-E1
AZ7042Z-G1
Bulk
AZ7042ZTR-E1
AZ7042ZTR-G1
AZ7042Z-E1
AZ7042Z-G1
Ammo
AZ7045Z-E1
AZ7045Z-G1
AZ7045Z-E1
AZ7045Z-G1
Bulk
AZ7045ZTR-E1
AZ7045ZTR-G1
AZ7045Z-E1
AZ7045Z-G1
Ammo
2.3V
AZ7023RTR-E1
AZ7023RTR-G1
E723
G70A
Tape & Reel
2.5V
AZ7025RTR-E1
AZ7025RTR-G1
E725
G70G
Tape & Reel
2.7V
AZ7027RTR-E1
AZ7027RTR-G1
E727
G70B
Tape & Reel
2.9V
AZ7029RTR-E1
AZ7029RTR-G1
E729
G70C
Tape & Reel
3.1V
AZ7031RTR-E1
AZ7031RTR-G1
E731
G70H
Tape & Reel
3.3V
AZ7033RTR-E1
AZ7033RTR-G1
E733
G70D
Tape & Reel
4.2V
AZ7042RTR-E1
AZ7042RTR-G1
E742
G70E
Tape & Reel
4.5V
AZ7045RTR-E1
AZ7045RTR-G1
E745
G70F
Tape & Reel
4.5V
SOT-89
Package
Z: TO-92
R: SOT-89
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
BCD Semiconductor Manufacturing Limited
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Data Sheet
VOLTAGE DETECTOR
AZ70XX
Absolute Maximum Ratings (Note 1)
Parameter
Supply Voltage
Symbol
Value
Unit
VCC
-0.3 to 20
V
TO-92 Package: 400
Power Dissipation (Package Limitations,
TA=25oC)
PD
Operating Junction Temperature
TJ
150
oC
TSTG
-65 to 150
oC
Storage Temperature Range
SOT-89 Package: 500
mW
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
Supply Voltage
Operating Temperature Range
Symbol
Min
VCC
TA
-40
Max
Unit
18
V
85
oC
BCD Semiconductor Manufacturing Limited
Oct. 2011 Rev. 2. 2
4
Data Sheet
VOLTAGE DETECTOR
AZ70XX
Electrical Characteristics
TA=25oC, unless otherwise specified.
Parameter
Detect Voltage
Symbol
VDET
Conditions
RL=200Ω
(Note 2)
VOL ≤ 0.4V
Min
Typ
Max
AZ7023R/Z
2.15
2.3
2.45
AZ7025R/Z
2.35
2.5
2.65
AZ7027R/Z
2.55
2.7
2.85
AZ7029R/Z
2.75
2.9
3.05
AZ7031R/Z
2.95
3.1
3.25
AZ7033R/Z
3.15
3.3
3.45
AZ7042R/Z
4.05
4.2
4.35
AZ7045R/Z
4.35
4.5
4.65
Unit
V
Low-level Output Voltage
VOL
VCC=VDET(min)-0.05V
RL=200Ω (Note 2)
0.4
V
Output Leakage Current
IOH
VCC=18V
0.1
µA
100
mV
Hysteresis Voltage
VHYS
RL=200Ω (Note 2)
30
50
Detect Voltage Temperature
Coefficient
∆VDET/(VDET
Circuit Current at On Time
ICCL
VCC=VDET(min)-0.05V
300
500
µA
Circuit Current at Off Time
ICCH
VCC=5.25V
30
50
µA
Minimum Operating Voltage
VOPR
“L”Transmission Delay Time
tpHL
tpLH
“H”Transmission Delay Time
× ∆T)
IOL Ⅰ
Output Current at On Time
IOL Ⅱ
Thermal Resistance
(Junction to Case)
θJC
±0.01
RL=200Ω (Note 2)
RL=200Ω (Note 2)
% / oC
0.8
V
VCC changed from 5.25V to
VDET(min)-0.05V, RL=1.0KΩ,
CL=100p (Note 3)
10
µs
VCC changed from VDET(min)0.05V to 5.25V, RL=1.0KΩ,
CL=100p (Note 3)
15
µs
VOL ≤ 0.4V
VCC=VDET(min)-0.05V
20
TA=25oC (Note 4)
mA
VCC=VDET(min)-0.05V
TA=-40 to 85 oC (Note 4)
16
TO-92
72
SOT-89
74
o
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".
BCD Semiconductor Manufacturing Limited
Oct. 2011 Rev. 2. 2
5
Data Sheet
VOLTAGE DETECTOR
AZ70XX
Electrical Characteristics (Continued)
A1
A2
1
RL
VCC
AZ7029
V1
3
OUT
+
GND
2
10µF
V2
Figure 4. Test Circuit 1
RL
1
VCC
Input
Pulse
AZ7029
+
OUT
GND
+5V
10µF
3
CL
2
Figure 5. Test Circuit 2
1
VDET(min)-0.05V
+
V CC
10µF
AZ7029
OUT
GND
2
3
A
V
Figure 6. Test Circuit 3
Oct. 2011 Rev. 2. 2
BCD Semiconductor Manufacturing Limited
6
Data Sheet
VOLTAGE DETECTOR
AZ70XX
Typical Performance Characteristics
1200
2.95
1100
Minimum Operating Voltage (mV)
AZ7029
Detect Voltage (V)
2.90
VDET+ (VCC Rising)
2.85
VDET- (VCC Falling)
2.80
2.75
-40
-20
0
20
40
60
1000
AZ7029
900
800
700
600
500
400
-40
80
-20
0
40
60
80
Temperature ( C)
Temperature ( C)
Figure 7. Detect Voltage vs. Temperature
Figure 8. Minimum Operating Voltage vs. Temperature
100
Low-level Output Voltage (mV)
70
Output Current at On Time (mA)
20
O
O
60
50
AZ7029
40
30
75
AZ7029
50
25
20
10
-40
-20
0
20
40
60
0
-40
80
-20
0
20
40
60
80
O
Temperature ( C)
O
Temperature ( C)
Figure 9. Output Current at On Time vs. Temperature
Figure 10. Low-level Output Voltage vs. Temperature
BCD Semiconductor Manufacturing Limited
Oct. 2011 Rev. 2. 2
7
Data Sheet
VOLTAGE DETECTOR
AZ70XX
Typical Performance Characteristics (Continued)
Time (s)
Figure 11. Output Voltage Dynamic Response when VCC Increases and Decreases
Operating Diagram
VCC
VDET+
VHYS
VDETVOPR
GND
VOUT
tpHL
tpLH
tpHL
tpLH
Figure 12. AZ70XX Timing Waveform (Note 5)
Note 5: Detect voltage: VDETHysteresis voltage (VHYS): VDET+-VDET-
Release voltage: VDET+
Minimum operating voltage: VOPR
Oct. 2011 Rev. 2. 2
BCD Semiconductor Manufacturing Limited
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Data Sheet
VOLTAGE DETECTOR
AZ70XX
Operating Diagram (Continued)
typical). Below minimum operating voltage, the output is undefined.
Figure 12 is a typical timing waveform for AZ70XX.
In normal steady-state operation when VCC>VDET-,
the output will be in a logic high state and VOUT is
dependent upon the voltage that the pull-up resistor
connected to.
3. During power-up, VOUT will remain undefined until
VCC rises above VOPR, at which time the output will
become valid. VOUT will be in its active low state
while VOPR<VCC<VDET+ (VDET+=VDET-+VHYS).
VDET+ is the release voltage. VHYS means the hysteresis voltage and is the difference voltage between the
VDET+ and VDET-.
Here is some explanations for AZ70XX's operation.
1. When the input voltage VCC falls below VDET-, the
output will pull down to logic low after a delay time of
tpHL. In general, at rated output current and VCC,
VOUT can be pulled down to a voltage as low as within
0.4V from GND. (See the Electrical Characteristics
section). The voltage level VDET- means the detect
voltage.
4. When VCC rises above VDET+, the output will be in
its inactive state. After a delay time of tpLH, VOUT
will be in its logic high state .
2. The output, VOUT, will stay valid until VCC falls
below the minimum operating voltage, VOPR (0.8V
Typical Applications
VCC +5V
VCC
R1
220
1
1
VCC
AZ70XX
VCC
OUT
GND
R1
3.3k
3
AZ70XX
OUT
2
Figure 13. Low Voltage Indicator
RESET
+
GND
LED
2
VCC
3
CPU
GND
C1
1 µF
Figure 14. CPU Resetting Circuit
BCD Semiconductor Manufacturing Limited
Oct. 2011 Rev. 2. 2
9
Data Sheet
VOLTAGE DETECTOR
AZ70XX
Mechanical Dimensions
TO-92(Bulk Packing)
Unit: mm(inch)
1.000(0. 039)
3.430(0.135)
MIN
3.700(0.146)
3.300(0.130)
1.400(0. 055)
0.320(0. 013)
0.510(0. 020)
0. 000(0. 000)
0. 380(0. 015)
Φ1. 600(0. 063)
MAX
4.700(0.185)
1.270(0. 050)
TYP
15.500(0.610)
0.360(0. 014)
0.760(0. 030)
12.500(0.492)
4.300(0.169)
4.400(0.173)
4.800(0.189)
2.420(0.095)
2.660(0.105)
Oct. 2011 Rev. 2. 2
BCD Semiconductor Manufacturing Limited
10
Data Sheet
VOLTAGE DETECTOR
AZ70XX
Mechanical Dimensions (Continued)
TO-92(Ammo Packing)
Unit: mm(inch)
1. 100(0. 043)
3. 430(0.135)
MIN
1.270(0.050)
Typ
2.500(0.098)
4.000 (0.157 )
0. 000(0.000)
0. 380(0.015)
Φ1. 600(0. 063)
Φ
MAX
14.500(0.571)
12.500(0.492)
0.320(0. 013)
0. 510(0. 020)
3.800(0.150)
3.300(0.130)
1. 400(0.055)
4.700(0.185)
4.300(0.169)
4.400(0.173)
4.800 (0.189 )
13.000(0. 512)
15.000 (0.591 )
0.380(0.015)
0.550(0.022 )
2.540(0.100)
Typ
Oct. 2011 Rev. 2. 2
BCD Semiconductor Manufacturing Limited
11
Data Sheet
VOLTAGE DETECTOR
AZ70XX
Mechanical Dimensions (Continued)
SOT-89
1.550(0.061)REF
Unit: mm(inch)
4.400(0.173)
4.600(0.181)
1.400(0.055)
1.600(0.063)
1.030(0.041)REF
45
2.300(0.091)
2.600(0.102)
3.950(0.156)
4.250(0.167)
2.060(0.081)REF
3
0.900(0.035)
1.100(0.043)
0.320(0.013)
0.520(0.020)
0.480(0.019)
0.320(0.013)
0.520(0.020)
10
0.350(0.014)
0.450(0.018)
3.000(0.118)
TYP
1.500(0.059)
1.800(0.071)
0.320(0.013)REF
3
2.210(0.087)REF
1.620(0.064)REF
R0.150(0.006)
10
Oct. 2011 Rev. 2. 2
BCD Semiconductor Manufacturing Limited
12
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