Low Power Voltage Detector
Ver17 1 Jul 262014
Features
Low power consumption
Low temperature coefficient
Builtin hysteresis characteristic
High input voltage (up to 10V)
Output voltage accuracy tolerance ±1 or ±2
TO92 SOT89 SOT233 SOT23 and SOT235
package
Applications
Battery checkers
Level selectors
Power failure detectors
Microcomputer reset
Battery memory backup
Nonvolatile RAM signal storage protectors
General Description
The HE70XXM 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 09V to 50V 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
inverter or NMOS open drain) 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 Det Voltage Hys Width Output Tolerance Package
HE7009MCxx 09V 4 CMOS ±1 or ±2
TO92
SOT89
SOT233
SOT23
SOT235
HE7009MNxx 09V 4 NMOS ±1 or ±2
HE7010MCxx 10V 4 CMOS ±1 or ±2
HE7010MNxx 10V 4 NMOS ±1 or ±2
HE7011MCxx 11V 4 CMOS ±1 or ±2
HE7011MNxx 11V 4 NMOS ±1 or ±2
HE7012MCxx 12V 4 CMOS ±1 or ±2
HE7012MNxx 12V 4 NMOS ±1 or ±2
… … 4 … ±1 or ±2
HE7050MCxx 50V 4 CMOS ±1 or ±2
HE7050MNxx 50V 4 NMOS ±1 or ±2 Ver17 2 Jul 262014
Order Information
HE70①②③④⑤⑥⑦
Designator Symbol Description
① ② Integer Output Voltage(09~50V)
③ M Standard
④ C
N
CMOS output
NMOS output
⑤ T PackageTO92
P PackageSOT89
M PackageSOT233
N PackageSOT23
M5 PackageSOT235
⑥ R RoHS Pb Free
G Halogen Free
⑦ 1 ±1 accuracy
Note if ⑦ is omitted the accuracy is ±2 accuracy
Block Diagram
HE70XXM series
Low Power Voltage Detector Ver17 3 Jul 262014
Output Table & Curve
VDD VDD>VDET(+) VDD≤VDET()
VOUT HiZ VSS
Pin Assignment
HE70XXM series
Low Power Voltage Detector Ver17 4 Jul 262014
Marking Rule
HE70XXM series
Low Power Voltage Detector Ver17 5 Jul 262014
Absolute Maximum Ratings
Supply Voltage 03V to 11V
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℃
Electrical Characteristics
VDF08V~50V Ta25℃
Symbol Parameter Test Conditions Min Typ Max Unit
VDET Detection Voltage
VDF08V~22V
VDF23V~50V
VDF*098 VDF VDF*102 V
VHYS Hysteresis Width 002*VDET 004*VDET 008*VDET V
IDD Operating Current
Vin15V 07 23
μA
Vin20V 08 27
Vin30V 09 30
Vin40V 10 32
Vin50V 11 36
VDD Operating Voltage 07 10 V
IOL Output Sink Current 2V VOUT02V 05 1 mA
aDF
DET
TV
V
Temperature
Coefficient
25℃
HE70XXM series
Low Power Voltage Detector Ver17 6 Jul 262014
Typical Performance Characteristics
(1) Output Voltage vs Input voltage
(2) Supply Current vs Input Voltage
(3) Detect Release Voltage vs Ambient Temperature
HE7050MNTR
HE70XXM series
Low Power Voltage Detector Ver17 7 Jul 262014
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
HE70xxMNPR
R47K
NMOS open drain output application with RC delay
HE70xxMNPR
Poweron Reset Circuit
With several external components the NMOS open drain type of the HE70XXM
series can be used to perform a poweron reset function as shown
HE70xxMNPR
HE70XXM series
Low Power Voltage Detector Ver17 8 Jul 262014
5V Power Line Monitoring Circuit
Generally a minimum operating voltage of 45V is guaranteed in a 5V power line
system
5V power line monitor with poweron reset
HE70xxMNPR
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
HE70xxMNPR
HE70XXM series
Low Power Voltage Detector Ver17 9 Jul 262014
Varying the detectable voltage with a diode
HE70xxMNPR
Malfunction Analysis
The following circuit demonstrates the way a circuit analyzes malfunctions by
monitoring the variation or spike noise of power supply voltage
HE70xxMNPR
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 current protecting the
battery from overcharging
HE70xxMNPR
HE70XXM series
Low Power Voltage Detector Ver17 10 Jul 262014
Level Selector
The following diagram illustrates a logic level selector
HE70XXM series
Low Power Voltage Detector
HE70xxMNPR HE70xxMNPRVer17 11 Jul 262014
Package Information
3pin TO92 Outline Dimensions
HE70XXM series
Low Power Voltage Detector Ver17 12 Jul 262014
3pin SOT89 Outline Dimensions
HE70XXM series
Low Power Voltage Detector Ver17 13 Jul 262014
3pin SOT233 Outline Dimensions
HE70XXM series
Low Power Voltage Detector Ver17 14 Jul 262014
3pin SOT23 Outline Dimensions
HE70XXM series
Low Power Voltage Detector Ver17 15 Jul 262014
5pin SOT235 Outline Dimensions
HE70XXM series
Low Power Voltage Detector
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