BCD AZ7027Z-E1 Voltage detector Datasheet

Preliminary Datasheet
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-89-3.
TO-92
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-89-3
Figure 1. Package Types of AZ70XX
Mar. 2007 Rev. 1. 5
BCD Semiconductor Manufacturing Limited
1
Preliminary Datasheet
VOLTAGE DETECTOR
AZ70XX
Pin Configuration
Z Package
(TO-92)
Z Package
(TO-92 Ammo Packing)
3
OUT
3
OUT
2
GND
2
GND
VCC
1
VCC
1
R Package
(SOT-89-3)
2
1
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
Mar. 2007 Rev. 1. 5
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet
VOLTAGE DETECTOR
AZ70XX
Ordering Information
-
AZ70
E1: Lead Free
Blank: Tin Lead
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
Marking ID
Packing Type
Tin Lead
Lead Free
Tin Lead
Lead Free
AZ7023Z
AZ7023Z-E1
AZ7023Z
AZ7023Z-E1
Bulk
AZ7023ZTR
AZ7023ZTR-E1
AZ7023Z
AZ7023Z-E1
Ammo
AZ7025Z
AZ7025Z-E1
AZ7025Z
AZ7025Z-E1
Bulk
AZ7025ZTR
AZ7025ZTR-E1
AZ7025Z
AZ7025Z-E1
Ammo
AZ7027Z
AZ7027Z-E1
AZ7027Z
AZ7027Z-E1
Bulk
AZ7027ZTR
AZ7027ZTR-E1
AZ7027Z
AZ7027Z-E1
Ammo
AZ7029Z
AZ7029Z-E1
AZ7029Z
AZ7029Z-E1
Bulk
AZ7029ZTR
AZ7029ZTR-E1
AZ7029Z
AZ7029Z-E1
Ammo
AZ7031Z
AZ7031Z-E1
AZ7031Z
AZ7031Z-E1
Bulk
AZ7031ZTR
AZ7031ZTR-E1
AZ7031Z
AZ7031Z-E1
Ammo
AZ7033Z
AZ7033Z-E1
AZ7033Z
AZ7033Z-E1
Bulk
AZ7033ZTR
AZ7033ZTR-E1
AZ7033Z
AZ7033Z-E1
Ammo
AZ7042Z
AZ7042Z-E1
AZ7042Z
AZ7042Z-E1
Bulk
AZ7042ZTR
AZ7042ZTR-E1
AZ7042Z
AZ7042Z-E1
Ammo
AZ7045Z
AZ7045Z-E1
AZ7045Z
AZ7045Z-E1
Bulk
AZ7045ZTR
AZ7045ZTR-E1
AZ7045Z
AZ7045Z-E1
Ammo
2.3V
AZ7023RTR
AZ7023RTR-E1
7023R
E723
Tape & Reel
2.5V
AZ7025RTR
AZ7025RTR-E1
7025R
E725
Tape & Reel
2.7V
AZ7027RTR
AZ7027RTR-E1
7027R
E727
Tape & Reel
2.9V
AZ7029RTR
AZ7029RTR-E1
7029R
E729
Tape & Reel
3.1V
AZ7031RTR
AZ7031RTR-E1
7031R
E731
Tape & Reel
3.3V
AZ7033RTR
AZ7033RTR-E1
7033R
E733
Tape & Reel
4.2V
AZ7042RTR
AZ7042RTR-E1
7042R
E742
Tape & Reel
4.5V
AZ7045RTR
AZ7045RTR-E1
7045R
E745
Tape & Reel
4.5V
SOT-89-3
Package
Z: TO-92
R: SOT-89-3
BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant.
Mar. 2007 Rev. 1. 5
BCD Semiconductor Manufacturing Limited
3
Preliminary Datasheet
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
Storage Temperature Range
mW
SOT-89-3 Package: 500
o
150
TSTG
C
oC
-65 to 150
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
Mar. 2007 Rev. 1. 5
-40
Max
Unit
18
V
85
oC
BCD Semiconductor Manufacturing Limited
4
Preliminary Datasheet
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=15V
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
±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)
Output Current at On Time
mA
IOL Ⅱ
VCC=VDET(min)-0.05V
TA=-40 to 85 oC (Note 4)
16
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".
Mar. 2007 Rev. 1. 5
BCD Semiconductor Manufacturing Limited
5
Preliminary Datasheet
VOLTAGE DETECTOR
AZ70XX
Electrical Characteristics (Continued)
A1
A2
1
RL
VCC
AZ7029
V1
3
OUT
+
GND
10µF
2
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
Mar. 2007 Rev. 1. 5
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet
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
Mar. 2007 Rev. 1. 5
BCD Semiconductor Manufacturing Limited
7
Preliminary Datasheet
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
Mar. 2007 Rev. 1. 5
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet
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
R1
3.3k
VCC
OUT
GND
3
AZ70XX
VCC
OUT
3
+
GND
LED
2
2
Figure 13. Low Voltage Indicator
RESET
CPU
GND
C1
1 µF
Figure 14. CPU Resetting Circuit
Mar. 2007 Rev. 1. 5
BCD Semiconductor Manufacturing Limited
9
Preliminary Datasheet
VOLTAGE DETECTOR
AZ70XX
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. 5
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet
VOLTAGE DETECTOR
AZ70XX
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. 5
BCD Semiconductor Manufacturing Limited
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Preliminary Datasheet
VOLTAGE DETECTOR
AZ70XX
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. 5
BCD Semiconductor Manufacturing Limited
12
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