Holtek Semiconductor Inc HT7022A Datasheet
Features
·
Low power consumption
·
Low temperature coefficient
·
Built-in high-stability reference source
Applications
·
Battery checkers
·
Level selectors
·
Power failure detectors
General Description
The HT70XX series is a set of three-terminal low power
voltage detectors implemented in CMOS technology.
Each voltage detector in the series detects a particular
fixed voltage ranging from 2.2V to 7V. The voltage de
tectors consist of a high-precision and low power con
sumption standard voltage source, a comparator,
hysteresis circuit, and an output driver. CMOS technol
ogy ensures low power consumption.
HT70XX
Voltage Detector
·
Built-in hysteresis characteristic
·
TO-92 & SOT-89 package
·
Microcomputer reset
·
Battery memory backup
·
Non-volatile RAM signal storage protectors
Although designed primarily as fixed voltage detectors,
these devices can be used with external components to
detect user specified threshold voltages (NMOS open
drain type only).
-
-
-
Selection Table
Part No. Detectable Voltage Hysteresis Width Tolerance
HT7022A
HT7024A
HT7027A
HT7033A
HT7039A
HT7044A
HT7050A
HT7070A
Note: The output type selection codes are:
NMOS open drain normal open, active low
For example: The HT7070A is a 7.0V, NMOS open drain active low output
Output type selection table
Type
V
OUT
A Hi-Z VSS
2.2V 0.11V
2.4V 0.12V
2.7V 0.135V
3.3V 0.165V
3.9V 0.195V
4.4V 0.22V
5.0V 0.25V
7.0V 0.35V
V
DD
VDD>V
DET
(+) VDD£V
DET
±5%
±5%
±5%
±5%
±5%
±5%
±5%
±5%
(-)
Rev. 1.60 1 January 14, 2003
Block Diagram
N channel open drain output (normal open; active low)
HT70XX
A type
VDD
GND
VOUT
V
REF
V
OUT
V
DET
V
HYS
V
IN
Pin Assignment
T O - 9 2
H T 7 0 X X
O U T V D D V S S
Rev. 1.60 2 January 14, 2003
F r o n t V i e w
B o t t o m V i e w
S O T - 8 9
O U T V D D V S S
HT70XX
Pad Assignment
HT70XX (except HT7022A)
( 0 , 0 )
1
2
V O U T
V I N
Chip size: 1317 ´ 1158 (mm)
* The IC substrate should be connected to VDD in the
PCB layout artwork.
HT7022A only
O U T
1
( 0 , 0 )
3
G N D
2
V D D
2
V S S
3
Pad Coordinates
HT70XX (except HT7022A)
Pad No. X Y
1
2
3 443.90
HT7022A only
Pad No. X Y
1
2 120.65 461.01
3 774.70 412.75
-483.30 -379.50
-234.60 -399.50
-434.34
Unit: mm
-386.00
Unit: mm
394.97
Chip size: 2032 ´ 1321 (mm)
2
* The IC substrate should be connected to VDD in the
PCB layout artwork.
Absolute Maximum Ratings
Supply Voltage, except HT7022A..................................................................................................VSS-0.3V toVSS+26V
Supply Voltage, HT7022A only....................................................................................................................-0.3V to13V
Output Voltage...........................V
Storage Temperature ............................-50°Cto125°C Power Consumption ..........................................200mW
Operating Temperature...............................0°Cto70°C
Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may
cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil
ity.
-0.3V to VDD+0.3V Output Current......................................................50mA
SS
-
Rev. 1.60 3 January 14, 2003
Electrical Characteristics
HT7022A
HT70XX
Ta=25°C
Symbol Parameter
V
V
I
DD
V
I
OL
DDV
DET
HYS
DD
DET
T
Hi®Lo Detectable Voltage ¾¾
Lo®Hi Detectable Voltage ¾¾
Hysteresis Width
Operating Current 3.2V No load
Operating Voltage
Output Sink Current 2V
Temperature Coefficient
a
HT7024A
Symbol Parameter
V
V
I
DD
V
I
OL
DDV
DET
HYS
DD
DET
T
Hi®Lo Detectable Voltage ¾¾
Lo®Hi Detectable Voltage ¾¾
Hysteresis Width
Operating Current 8V No load
Operating Voltage
Output Sink Current 2V
Temperature Coefficient
a
Test Conditions
DD
Conditions
V
Min. Typ. Max. Unit
2.09 2.2 2.31 V
2.132 2.31 2.541 V
¾¾
¾¾
=0.2V
V
OUT
0.02
V
DET
¾
1.6
0.5 1
0.05
V
DET
1.8 4
¾
0.1
V
DET
12 V
¾
mA
mA
¾ 0°C<Ta<70°C ¾±0.9 ¾ mV/°C
Ta=25°C
Test Conditions
DD
Conditions
V
Min. Typ. Max. Unit
2.28 2.4 2.52 V
2.325 2.52 2.772 V
¾¾
¾¾
=0.2V
V
OUT
0.02
V
DET
¾
1.5
0.5 1
0.05
V
DET
47
¾
0.1
V
DET
24 V
¾
mA
mA
¾ 0°C<Ta<70°C ¾±0.9 ¾ mV/°C
V
V
HT7027A
Symbol Parameter
V
V
I
DD
V
I
OL
DDV
DET
HYS
DD
DET
T
Hi®Lo Detectable Voltage ¾¾
Lo®Hi Detectable Voltage ¾¾
Hysteresis Width
Operating Current 8V No load
Operating Voltage
Output Sink Current 2V
Temperature Coefficient
a
Test Conditions
DD
Conditions
V
Min. Typ. Max. Unit
2.565 2.7 2.835 V
2.616 2.835 3.118 V
¾¾
¾¾
=0.2V
V
OUT
0.02
V
DET
¾
1.5
0.5 1
0.05
V
DET
V
47
¾
¾ 0°C<Ta<70°C ¾±0.9 ¾ mV/°C
Ta=25°C
0.1
DET
24 V
¾
V
mA
mA
Rev. 1.60 4 January 14, 2003
HT70XX
HT7033A
Symbol Parameter
V
V
I
DD
V
I
OL
DDV
DET
HYS
DD
DET
T
Hi®Lo Detectable Voltage ¾¾
Lo®Hi Detectable Voltage ¾¾
Hysteresis Width
Operating Current 8V No load
Operating Voltage
Output Sink Current 2.5V
Temperature Coefficient
a
HT7039A
Symbol Parameter
V
V
I
DD
V
I
OL
DDV
DET
HYS
DD
DET
T
Hi®Lo Detectable Voltage ¾¾
Lo®Hi Detectable Voltage ¾¾
Hysteresis Width
Operating Current 8V No load
Operating Voltage
Output Sink Current 2.5V
Temperature Coefficient
a
Ta=25°C
Test Conditions
DD
Conditions
V
Min. Typ. Max. Unit
3.135 3.3 3.465 V
3.197 3.465 3.811 V
¾¾
¾¾
=0.25V
V
OUT
0.02
V
DET
V
¾
1.5
1.2 2.5
0.05
DET
47
¾
0.1
V
DET
24 V
¾
V
mA
mA
¾ 0°C<Ta<70°C ¾±0.9 ¾ mV/°C
Ta=25°C
Test Conditions
DD
Conditions
V
Min. Typ. Max. Unit
3.705 3.9 4.095 V
3.779 4.095 4.504 V
¾¾
¾¾
=0.25V
V
OUT
0.02
V
DET
V
¾
1.5
1.2 2.5
0.05
DET
47
¾
0.1
V
DET
24 V
¾
V
mA
mA
¾ 0°C<Ta<70°C ¾±0.9 ¾ mV/°C
HT7044A
Symbol Parameter
V
V
I
DD
V
I
OL
DDV
DET
HYS
DD
DET
T
Hi®Lo Detectable Voltage ¾¾
Lo®Hi Detectable Voltage ¾¾
Hysteresis Width
Operating Current 8V No load
Operating Voltage
Output Sink Current 3.6V
Temperature Coefficient
a
Test Conditions
DD
Conditions
V
Min. Typ. Max. Unit
4.18 4.4 4.62 V
4.263 4.62 5.082 V
¾¾
¾¾
=0.36V
V
OUT
0.02
V
DET
¾
1.5
0.05
V
DET
47
¾
36
0.1
V
¾ 0°C<Ta<70°C ¾±0.9 ¾ mV/°C
Ta=25°C
DET
24 V
¾
mA
V
mA
Rev. 1.60 5 January 14, 2003
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