Document
VOLTAGE DETECTOR General Description
Features
Data Sheet AZ70XX
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.
· 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
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
Oct. 2011 Rev. 2. 2
Figure 1. Package Types of AZ70XX
BCD Semiconductor Manufacturing Limited 1
VOLTAGE DETECTOR Pin Configuration
Z Package (TO-92(Bulk Packing))
Z Package (TO-92(Ammo Packing))
3 OUT 2 GND 1 VCC
3 OUT 2 GND 1 VCC
Data Sheet AZ70XX
R Package (SOT-89)
123
VCC 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
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
-
Data Sheet
AZ70XX
E1: Lead Free G1: Green TR: Tape and Reel or Ammo Blank: Bulk Package Z: TO-92 R: SOT-89
Package TO-92 SOT-89
Temperature Range
-40 to 85oC
-40 to 85oC
Detect Voltage
2.3V
2.5V
2.7V
2.9V
3.1V
3.3V
4.2V
4.5V 2.3V 2.5V 2.7V 2.9V 3.1V 3.3V 4.2V 4.5V
Part Number
Lead Free
Green
AZ7023Z-E1
AZ7023Z-G1
AZ7023ZTR-E1 AZ7023ZTR-G1
AZ7025Z-E1
AZ7025Z-G1
AZ7025ZTR-E1 AZ7025ZTR-G1
AZ7027Z-E1
AZ7027Z-G1
AZ7027ZTR-E1 AZ7027ZTR-G1
AZ7029Z-E1
AZ7029Z-G1
AZ7029ZTR-E1 AZ7029ZTR-G1
AZ7031Z-E1
AZ7031Z-G1
AZ7031ZTR-E1 AZ7031ZTR-G1
AZ7033Z-E1
AZ7033Z-G1
AZ7033ZTR-E1 AZ7033ZTR-G1
AZ7042Z-E1
AZ7042Z-G1
AZ7042ZTR-E1 AZ7042ZTR-G1
AZ7045Z-E1
AZ7045Z-G1
AZ7045ZTR-E1 AZ7045ZTR-G1
AZ7023RTR-E1 AZ7023RTR-G1
AZ7025RTR-E1 AZ7025RTR-G1
AZ7027RTR-E1 AZ7027RTR-G1
AZ7029RTR-E1 AZ7029RTR-G1
AZ7031RTR-E1 AZ7031RTR-G1
AZ7033RTR-E1 AZ7033RTR-G1
AZ7042RTR-E1 AZ7042RTR-G1
AZ7045RTR-E1 AZ7045RTR-G1
Marking ID
Lead Free
Green
AZ7023Z-E1
AZ7023Z-G1
AZ7023Z-E1
AZ7023Z-G1
AZ7025Z-E1
AZ7025Z-G1
AZ7025Z-E1
AZ7025Z-G1
AZ7027Z-E1
AZ7027Z-G1
AZ7027Z-E1
AZ7027Z-G1
AZ7029Z-E1
AZ7029Z-G1
AZ7029Z-E1
AZ7029Z-G1
AZ7031Z-E1
AZ7031Z-G1
AZ7031Z-E1
AZ7031Z-G1
AZ7033Z-E1
AZ7033Z-G1
AZ7033Z-E1
AZ7033Z-G1
AZ7042Z-E1
AZ7042Z-G1
AZ7042Z-E1
AZ7042Z-G1
AZ7045Z-E1
AZ7045Z-G1
AZ7045Z-E1
AZ7045Z-G1
E723
G70A
E725
G70G
E727
G70B
E729
G70C
E731
G70H
E733
G70D
E742
G70E
E745
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
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 3
VOLTAGE DETECTOR Absolute Maximum Ratings (Note 1)
Data Sheet AZ70XX
Parameter Supply Voltage
Power Dissipation (Package Limitations, TA=25oC)
Operating Junction Temperature Storage Temperature Range
Symbol VCC
PD
TJ TSTG
Value -0.3 to 20 TO-92 Package: 400 SOT-89 Package: 500
150 -65 to 150
Unit V
mW
oC oC
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 VCC TA
Min -40
Max 18 85
Unit V oC
Oct. 2011 Rev. 2. 2
BCD Semiconductor Manufacturing Limited 4
Data Sheet
VOLTAGE DETECTOR
AZ70XX
Electrical Characteristics
TA=25oC, unless otherwise specified.
Parameter
Detect Voltage
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”Tr.