Diodes AZ70XX User Manual

Data Sheet

VOLTAGE DETECTOR AZ70XX

General Description

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.

The AZ70XX series are available in 2 standard pack­ages: TO-92 (bulk or ammo packing) and SOT-89.

Features

· Low Current Consumption:

I

=300µA Typical

CCL

I

=30µA Typical

CCH

· Low Minimum Operating Voltage for Output

Resetting: 0.8V Typical

· Built in Hysteresis Voltage: 50mV Typical

· Open Collector Output

o

· Extended Temperature Range: -40 to 85

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)

Figure 1. Package Types of AZ70XX

SOT-89

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Data Sheet

VOLTAGE DETECTOR AZ70XX

Pin Configuration

Z Package R Package

(TO-92(Bulk Packing)) (TO-92(Ammo Packing))

3

OUT

2

GND

1

V

CC

Figure 2. Pin Configuration of AZ70XX (Top View)

Functional Block Diagram

Z Package

3

OUT

2

GND

V

1

CC

(SOT-89)

123

V

GND OUT

CC

V

CC

OUT

+

-

GND

Figure 3. Functional Block Diagram of AZ70XX

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Data Sheet

VOLTAGE DETECTOR AZ70XX

Ordering Information

AZ70

Circuit Type

-

E1: Lead Free
G1: Green

Package

TO-92

SOT-89

Detect Voltage

23: 2.3V
25: 2.5V
27: 2.7V

29: 2.9V

Temperature

Range

o

-40 to 85

-40 to 85

C

o

C

TR: Tape and Reel or Ammo

31: 3.1V
33: 3.3V
42: 4.2V

45: 4.5V

Detect

Voltage

2.3V

2.5V

2.7V

2.9V

3.1V

3.3V

4.2V

4.5V

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

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

Part Number Marking ID

Lead Free Green Lead Free Green

Blank: Bulk

Package
Z: TO-92
R: SOT-89

Packing

Typ e

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.

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Data Sheet

VOLTAGE DETECTOR AZ70XX

Absolute Maximum Ratings (Note 1)

Parameter Symbol Value Unit

T

V

CC

P

T

STG

-0.3 to 20 V

TO-92 Package: 400

D

J

SOT-89 Package: 500

150

-65 to 150

mW

o

C

o

C

Supply Voltage

Power Dissipation (Package Limitations,

=25oC)

T

A

Operating Junction Temperature

Storage Temperature Range

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

Supply Voltage

Operating Temperature Range

V

CC

T

A

-40 85

18 V

o

C

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Data Sheet

VOLTAGE DETECTOR AZ70XX

Electrical Characteristics

TA=25oC, unless otherwise specified.

Parameter Symbol Conditions Min Typ Max Unit

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

(min)-0.05V

30 50 100 mV

(min)-0.05V

(min)-

DET

=1.0KΩ,

L

(min)-0.05V

20

(min)-0.05V

16

0.4 V

0.1

±0.01

% /

300 500 µA

30 50

0.8 V

10 µs

15 µs

o

V

µA

µA

mA

C/W

Detect Vo l t a g e

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

“L” Transmission Delay Time

“H” Transmission Delay Time

Output Current at On Time

Thermal Resistance
(Junction to Case)

∆V

V

DET

V

OL

I

OH

V

HYS

/(V

DET

× ∆T)

I

CCL

I

CCH

V

OPR

tpHL

tpLH

Ⅰ

I

OL

Ⅱ

I

OL

θ

JC

RL=200Ω

(Note 2)

V

≤ 0.4V

OL

VCC=V

DET

=200Ω (Note 2)

R

L

VCC=18V

RL=200Ω (Note 2)

DET

R

=200Ω (Note 2)

L

VCC=V

DET

VCC=5.25V

RL=200Ω (Note 2)

V

≤ 0.4V

OL

V

changed from 5.25V to

CC

(min)-0.05V, RL=1.0KΩ,

V

DET

=100p (Note 3)

C

L

changed from V

V

CC

0.05V to 5.25V, R

=100p (Note 3)

C

L

V

CC=VDET

=25oC (Note 4)

T

A

V

CC=VDET

T

=-40 to 85 oC (Note 4)

A

TO-92 72

SOT-89 74

o

C

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".

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Data Sheet

VOLTAGE DETECTOR AZ70XX

Electrical Characteristics (Continued)

Input

Pulse

V1

A1

1

V

CC

AZ7029

OUT

GND

2

Figure 4. Test Circuit 1

1

V

CC

AZ7029

GND

2

OUT

3

A2

R

L

3

+

10µF

R

L

+

10µF

C

L

V2

+5V

Figure 5. Test Circuit 2

Figure 5. Test Circuit 2

1

V

V

(min)-0.05V

DET

+

10µF

AZ7029

GND

CC

2

OUT

3

A

V

Figure 6. Test Circuit 3

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Data Sheet

VOLTAGE DETECTOR AZ70XX

Typical Performance Characteristics

2.95

AZ7029

2.90

V

(VCC Rising)

DET+

2.85

V

(VCC Falling)

Detect Voltage (V)

2.80

2.75

-40-20 0 20406080

DET-

Temperature (OC)

1200

1100

1000

900

800

700

600

500

Minimum Operating Voltage (mV)

400

-40-20 0 20406080

AZ7029

Temperature (OC)

Figure 7. Detect Voltage vs. Temperature Figure 8. Minimum Operating Voltage vs. Temperature

70

60

50

40

AZ7029

100

75

AZ7029

50

30

25

Output Current at On Time (mA)

20

10

-40-20 0 20406080

Temperature (OC)

Low-level Output Voltage (mV)

0

-40-20 0 20406080

Temperature (OC)

Figure 9. Output Current at On Time vs. Temperature Figure 10. Low-level Output Voltage vs. Temperature

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Data Sheet

VOLTAGE DETECTOR AZ70XX

Typical Performance Characteristics (Continued)

Time (s)

Figure 11. Output Voltage Dynamic Response when V

Operating Diagram

V

CC

V

DET+

V

DET-

V

OPR

V

OUT

Increases and Decreases

CC

V

HYS

tpLHtpHL

tpHL tpLH

Figure 12. AZ70XX Timing Waveform (Note 5)

GND

Note 5: Detect voltage: V

DET-

Hysteresis voltage (V

HYS

): V

DET+-VDET-

Release voltage: V

DET+

Minimum operating voltage: V

OPR

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Data Sheet

VOLTAGE DETECTOR AZ70XX

Operating Diagram (Continued)

Figure 12 is a typical timing waveform for AZ70XX.
In normal steady-state operation when V

output will be in a logic high state and V

the

CC>VDET-

OUT

dependent upon the voltage that the pull-up resistor
connected to.

Here is some explanations for AZ70XX's operation.

1. When the input voltage V

falls below V

CC

DET-

, the

output will pull down to logic low after a delay time of
tpHL. In general, at rated output current and V

V

can be pulled down to a voltage as low as within

OUT

CC

0.4V from GND. (See the Electrical Characteristics
section). The voltage level V

means the detect

DET-

voltage.

2. The output, V

, will stay valid until V

OUT

below the minimum operating voltage, V

OPR

falls

CC

(0.8V

Typical Applications

typical). Below minimum operating voltage, the out­put is undefined.

,

is

3. During power-up, V

rises above V

V

CC

become valid. V

while V
V

DET+

OPR

is the release voltage. V

<

VCC<

OPR

OUT

will remain undefined until

OUT

, at which time the output will
will be in its active low state

V

DET+ (VDET+=VDET-+VHYS

means the hystere-

HYS

sis voltage and is the difference voltage between the

,

and V

V

DET+

4. When V

.

DET-

rises above V

CC

, the output will be in

DET+

its inactive state. After a delay time of tpLH, V

will be in its logic high state .

).

OUT

1

V

CC

AZ70XX

GND

2

Figure 13. Low Voltage Indicator

Oct. 2011 Rev. 2. 2

OUT

V

GND

VCC +5V

CC

CPU

V

CC

OUT

R1

3.3k

3

C1

1 µF

RESET

+

R1

220

3

LED

AZ70XX

1

V

CC

GND

2

Figure 14. CPU Resetting Circuit

BCD Semiconductor Manufacturing Limited

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Data Sheet

VOLTAGE DETECTOR AZ70XX

Mechanical Dimensions

TO-92(Bulk Packing) Unit: mm(inch)

1.000(0.039)

1.400(0.055)

3.300(0.130)

3.700(0.146)

3.430(0.135)
MIN

4.400(0. 173)

4.800(0. 189)

Φ

1.600(0.063)

MAX

0.320(0.013)

0.510(0.020)

0.000(0.000)

0.380(0.015)

4.300(0.169)

4.700(0.185)

1.270(0.050)
TYP

0.360(0.014)

0.760(0.030)

12.500(0.492)

15.500(0.610)

2.420(0.095)

2.660(0.105)

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Data Sheet

VOLTAGE DETECTOR AZ70XX

Mechanical Dimensions (Continued)

TO-92(Ammo Packing) Unit: mm(inch)

1.100(0. 043

1.400(0. 055

3.300(0.130)

3.800(0.150)

4.400(0. 173

4.

800

)

MIN

)

Φ

1.600(0.063)

Φ

0.000(0.000

0. 380(0.0 15

MAX

0.320(0. 013
.510(0.020)

0

)
)

)

)

3.430(0. 135

4.300(0.169)

2.500(0.492)14.500(0.571)
1

4.700(0.185)

2.540(0. 100
Ty

p

)
)

(

0.

189

1.270(0.050

0. (0. 015)

0.

)

)

Typ

2.500(0. 098

4.000(0.157

380

(0.022

550

)
)

13. 000(0. 512

15.000(0.591

)

)
)

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Data Sheet

VOLTAGE DETECTOR AZ70XX

Mechanical Dimensions (Continued)

SOT-89 Unit: mm(inch)

4.400(0.173)

1.550(0.061)REF

4.600(0.181)

45

1.030(0.041)REF

1.400(0.055)

1.600(0.063)

3.950(0.156)

4.250(0.167)

0.900(0.035)

1.100(0.043)

R0.150(0.006)

0.320(0.013)

0.520(0.020)

3.000(0.118)
TYP

2.300(0.091)

2.600(0.102)

0.320(0.013)

0.520(0.020)

0.480(0.019)

3

2.210(0.087)REF

10

3

1.500(0.059)

1.800(0.071)

2.060(0.081)REF

10

0.350(0.014)

0.450(0.018)

0.320(0.013)REF

1.620(0.064)REF

Oct. 2011 Rev. 2. 2 BCD Semiconductor Manufacturing Limited

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BCD Semiconductor Manufacturing Limited

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IMPORTANT NOTICE

BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifi-

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cations herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any

cations 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

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

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.

other rights nor the rights of others.

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