HE70XXH series
Low Power Voltage Detector
Ver16 1 Mar 32013
Features
 Low power consumption
 Low temperature coefficient
 Builtin hysteresis characteristic
 High input voltage (up to 15V)
 Output voltage accuracy tolerance ±2
 TO92 SOT89 SOT233 and SOT23 package
Applications
 Battery checkers
 Level selectors
 Power failure detectors
 Microcomputer reset
 Battery memory backup
 Nonvolatile RAM signal storage protectors
General Description
The HE70XXH series devices are 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 22V to 70V The voltage detectors consist of
a highprecision and low power consumption
standard voltage source as well as a comparator
hysteresis circuit and an output driver CMOS
technology ensures low power consumption
Although designed primarily as fixed voltage
detectors these devices can be used with external
components to detect user specified threshold
voltages
Selection Table
Part No Detectable
Voltage
Hysteresis
Width
Tolerance Package Marking
HE7022HYxx 22V 011V ±2
TO92
SOT89
70XXA1(for TO92)
70XXA1(for SOT89)
HE7024HYxx 24V 012V ±2
HE7027HYxx 27V 0135V ±2
HE7030HYxx 30V 015V ±2
HE7033HYxx 33V 0165V ±2
HE7036HYxx 36V 018V ±2
HE7039HYxx 39V 0195V ±2
HE7040HYxx 40V 02V ±2
HE7044HYxx 44V 022V ±2
HE7050HYxx 50V 025V ±2
HE7070HYxx 70V 035V ±2 Ver16 2 Mar 32013
Order Information
HE70①②③④⑤⑥
Designator Symbol Description
① ② Integer Output Voltage(22~70V)
③ H Standard
④ Y N NMOS
C CMOS
⑤
T PackageTO92
P PackageSOT89
M PackageSOT233
N PackageSOT23
⑥ R RoHS Pb Free
G Halogen Free
Block Diagram
Output Table & Curve
VDD VDD>VDET(+) VDD≤VDET()
VOUT HiZ VSS
HE70XXH series
Low Power Voltage Detector Ver16 3 Mar 32013
Marking Rule
① Represents integer of detect voltage and
CMOS Output
MARK CONFIGURATIONG VOLTAGE(V)
A CMOS 0X
B CMOS 1X
C CMOS 2X
D CMOS 3X
E CMOS 4X
F CMOS 5X
H CMOS 6X
NChannel Open Drain Output
MARK CONFIGURATIONG VOLTAGE(V)
K Nch 0X
L Nch 1X
M Nch 2X
N Nch 3X
P Nch 4X
R Nch 5X
S Nch 6X
② Represents decimal number of detect voltage
MARK VOLTAGE(V) MARK VOLTAGE(V)
0 X0 5 X5
1 X1 6 X6
2 X2 7 X7
3 X3 8 X8
4 X4 9 X9
③ Represents accuracy
MARK ACCURACY
3 2
1 1
④ Represent production lot number
Y
HE70XXH series
Low Power Voltage Detector Ver16 4 Mar 32013
Pin Assignment
Absolute Maximum Ratings
Supply Voltage 03V to16V
Operating Temperature 40℃ to 85℃
Storage Temperature 50℃ to 125℃
Note These are stress ratings only Stresses exceeding the range specified under Absolute Maximum
Ratings 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 reliability
Thermal Information
Symbol Parameter Package Max Unit
θJA
Thermal Resistance (Junction to
Ambient) (Assume no ambient
airflow no heat sink)
SOT23 500 ℃W
SOT89 200 ℃W
TO92 200 ℃W
PD Power Dissipation
SOT23 020 W
SOT89 050 W
TO92 050 W
Note PD is measured at Ta 25℃
HE70XXH series
Low Power Voltage Detector Ver16 5 Mar 32013
Electrical Characteristics
HE7022HYxx
Ta25℃
Symbol Parameter
Test Conditions
Min Typ Max Unit
VDD Conditions
VDET Detection Voltage 2156 2200 2244 V
VHYS Hysteresis Width
002
VDET
005
VDET
01
VDET
V
IDD Operating Current 8V No Load 2 3 μA
VDD Operating Voltage 15 15 V
IOL Output Sink Current 2V VOUT02V 05 1 mA
a
DET
T
V

 Temperature
Coefficient

0℃ ±09 mV℃
HE7024HYxx
Ta25℃
Symbol Parameter
Test Conditions
Min Typ Max Unit
VDD Conditions
VDET Detection Voltage 2352 2400 2448 V
VHYS Hysteresis Width
002
VDET
005
VDET
01
VDET
V
IDD Operating Current 8V No Load 2 3 μA
VDD Operating Voltage 15 15 V
IOL Output Sink Current 2V VOUT02V 05 1 mA
Temperature
Coefficient

0℃ ±09 mV℃
HE70XXH series
Low Power Voltage Detector Ver16 6 Mar 32013
HE7027HYxx
Ta25℃
Symbol Parameter
Test Conditions
Min Typ Max Unit
VDD Conditions
VDET Detection Voltage 2646 2700 2754 V
VHYS Hysteresis Width
002
VDET
005
VDET
01
VDET
V
IDD Operating Current 8V No Load 2 3 μA
VDD Operating Voltage 15 15 V
IOL Output Sink Current 2V VOUT02V 05 1 mA
a
DET
T
V

 Temperature
Coefficient

0℃ ±09 mV℃
HE7030HYxx
Ta25℃
Symbol Parameter
Test Conditions
Min Typ Max Unit
VDD Conditions
VDET Detection Voltage 2940 3000 3060 V
VHYS Hysteresis Width
002
VDET
005
VDET
01
VDET
V
IDD Operating Current 8V No Load 2 3 μA
VDD Operating Voltage 15 15 V
IOL Output Sink Current 2V VOUT02V 12 25 mA
Temperature
Coefficient

0℃ ±09 mV℃
HE70XXH series
Low Power Voltage Detector Ver16 7 Mar 32013
HE7033HYxx
Ta25℃
Symbol Parameter
Test Conditions
Min Typ Max Unit
VDD Conditions
VDET Detection Voltage 3234 3300 3366 V
VHYS Hysteresis Width
002
VDET
005
VDET
01
VDET
V
IDD Operating Current 8V No Load 2 3 μA
VDD Operating Voltage 15 15 V
IOL Output Sink Current 2V VOUT02V 12 25 mA
a
DET
T
V

 Temperature
Coefficient

0℃ ±09 mV℃
HE7036HYxx
Ta25℃
Symbol Parameter
Test Conditions
Min Typ Max Unit
VDD Conditions
VDET Detection Voltage 3528 3600 3672 V
VHYS Hysteresis Width
002
VDET
005
VDET
01
VDET
V
IDD Operating Current 8V No Load 2 3 μA
VDD Operating Voltage 15 15 V
IOL Output Sink Current 2V VOUT02V 12 25 mA
Temperature
Coefficient

0℃ ±09 mV℃
HE70XXH series
Low Power Voltage Detector Ver16 8 Mar 32013
HE7039HYxx
Ta25℃
Symbol Parameter
Test Conditions
Min Typ Max Unit
VDD Conditions
VDET Detection Voltage 3822 3900 3978 V
VHYS Hysteresis Width
002
VDET
005
VDET
01
VDET
V
IDD Operating Current 8V No Load 2 3 μA
VDD Operating Voltage 15 15 V
IOL Output Sink Current 2V VOUT02V 12 25 mA
a
DET
T
V

 Temperature
Coefficient

0℃ ±09 mV℃
HE7040HYxx
Ta25℃
Symbol Parameter
Test Conditions
Min Typ Max Unit
VDD Conditions
VDET Detection Voltage 3920 4000 4080 V
VHYS Hysteresis Width
002
VDET
005
VDET
01
VDET
V
IDD Operating Current 8V No Load 2 3 μA
VDD Operating Voltage 15 15 V
IOL Output Sink Current 2V VOUT02V 12 25 mA
Temperature
Coefficient

0℃ ±09 mV℃
HE70XXH series
Low Power Voltage Detector Ver16 9 Mar 32013
HE7044HYxx
Ta25℃
Symbol Parameter
Test Conditions
Min Typ Max Unit
VDD Conditions
VDET Detection Voltage 4312 4400 4488 V
VHYS Hysteresis Width
002
VDET
005
VDET
01
VDET
V
IDD Operating Current 8V No Load 2 3 μA
VDD Operating Voltage 15 15 V
IOL Output Sink Current 2V VOUT02V 3 6 mA
a
DET
T
V

 Temperature
Coefficient

0℃ ±09 mV℃
HE7050HYxx
Ta25℃
Symbol Parameter
Test Conditions
Min Typ Max Unit
VDD Conditions
VDET Detection Voltage 4900 5000 5100 V
VHYS Hysteresis Width
002
VDET
005
VDET
01
VDET
V
IDD Operating Current 8V No Load 2 3 μA
VDD Operating Voltage 15 15 V
IOL Output Sink Current 2V VOUT02V 3 6 mA
Temperature
Coefficient

0℃ ±09 mV℃
HE70XXH series
Low Power Voltage Detector Ver16 10 Mar 32013
HE7070HYxx
Ta25℃
Symbol Parameter
Test Conditions
Min Typ Max Unit
VDD Conditions
VDET Detection Voltage 6860 7000 7140 V
VHYS Hysteresis Width
002
VDET
005
VDET
01
VDET
V
IDD Operating Current 8V No Load 2 3 μA
VDD Operating Voltage 15 15 V
IOL Output Sink Current 2V VOUT02V 3 6 mA
a
DET
T
V

 Temperature
Coefficient

0℃ ±09 mV℃
HE70XXH series
Low Power Voltage Detector Ver16 11 Mar 32013
Typical Performance Characteristics
(1) Output Voltage vs Input voltage
HE7030HYPRHE7024HYPR
HE7050HYPR HE7070HYPR
(2) Supply Current vs Input Voltage
HE7024HTR
HE7030HTR
HE7050HTR
HE7070HTR
HE70XXH series
Low Power Voltage Detector Ver16 12 Mar 32013
(3) Detect Release Voltage vs Ambient Temperature
HE7050HYTR
Application Circuits
Microcomputer Reset Circuit
Normally a reset circuit is required to
protect the microcomputer system from
malfunctions due to power line
interruptions The following examples
show how different output
Configurations perform a reset function
in various systems
NMOS open drain output application
for separate power supply
HE70xxHYxx
NMOS open drain output application
with RC delay
Poweron Reset Circuit
With several external components the
NMOS open drain type of the
HE70XXH series can be used to
perform a poweron reset function as
shown
HE70XXH series
Low Power Voltage Detector
HE70xxHYxx
HE70xxHYxxVer16 13 Mar 32013
5V Power Line Monitoring Circuit
Generally a minimum operating
voltage of 45V is guaranteed in a 5V
power line system The HE7044HYTR
is recommended for use as 5V power
line monitoring circuit
5V power line monitor with poweron
reset
HE7044HYTR
With 5V voltage regulator
HE7150MTR
Change of Detectable Voltage
If the required voltage is not found in
the standard product selection table it
is possible to change it by using
external resistance dividers or diodes
Varying the detectable voltage with a
resistance divider
Varying the detectable voltage with a
diode
Malfunction Analysis
The following circuit demonstrates the
way a circuit analyzes malfunctions by
monitoring the variation or spike noise
of power supply voltage
Charge Monitoring Circuit
The following circuit shows a charged
monitor for protection against battery
deterioration by overcharging When
the voltage of the battery is higher than
the set detectable voltage the
transistor turns onto bypass the charge
HE70XXH series
Low Power Voltage Detector
HE70xxHYxx
HE70xxHYxx
HE70xxHYxx
HE7044HYTRVer16 14 Mar 32013
current protecting the battery from
overcharging
Level Selector
The following diagram illustrates a logic level selector
HE7039HYTR HE7050HYTR
HE70XXH series
Low Power Voltage Detector
HE70xxHYxxVer16 15 Mar 32013
Package Information
3pin TO92 Outline Dimensions
HE70XXH series
Low Power Voltage Detector Ver16 16 Mar 32013
3pin SOT89 Outline Dimensions
HE70XXH series
Low Power Voltage Detector Ver16 17 Mar 32013
3pin SOT233 Outline Dimensions
HE70XXH series
Low Power Voltage Detector

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