TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
Features
Description
•
The TPV706 is a supervisory circuit to monitor power
supply voltage levels and provides a power-on reset
signal.
•
•
•
•
•
•
•
•
•
•
Precision Low-Voltage Monitoring and Power-Fail
Detector
200-ms (typical) Reset Timeout
A watchdog monitor is provided, which is activated if the
watchdog input doesn’t toggle within 1.6 sec.
Manual Reset Input
Independent Watchdog Timer
Reset Output Stage
A reset signal can be asserted by an external manual reset
input.
Push-pull Active-low Output (TPV706)
Low Power Consumption: 4-μA
In addition, there is a power-fail detector with a 1.25-V
threshold, which can be used to monitor an additional
power supply.
Guaranteed Reset Output Valid to VCC = 1 V
Power Supply Glitch Immunity
The reset periods are fixed at 200-ms (typical). The
TPV706 is available in an 8-pin SOP package and typically
consumes only 4-μA, which is suitable for low-power and
portable applications.
Temperature Range: −40°C to 125°C
SOP8 Package
Applications
•
•
•
•
•
Microprocessor Systems
Computers
Controllers
Intelligent Instruments
Portable Equipment
Typical Application Circuit
5V
Vx
VCC
/PFO
INT
/RESET
/RESET
PFI
TPV706
GND
www.3peak.com
WDI
I/O
/WDO
I/O
/MR
I/O
1 / 16
Microprocessor
GA20230801A6
TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
Table of Contents
Features................................................................................................................................................................1
Applications......................................................................................................................................................... 1
Description........................................................................................................................................................... 1
Typical Application Circuit..................................................................................................................................1
Product Family Table...........................................................................................................................................3
Revision History...................................................................................................................................................3
Pin Configuration and Functions....................................................................................................................... 4
Specifications.......................................................................................................................................................5
Absolute Maximum Ratings ...........................................................................................................................5
ESD, Electrostatic Discharge Protection........................................................................................................ 5
Thermal Information........................................................................................................................................5
Electrical Characteristics................................................................................................................................ 6
Typical Performance Characteristics.............................................................................................................. 8
Detailed Description.......................................................................................................................................... 10
Overview.......................................................................................................................................................10
Functional Block Diagram.............................................................................................................................10
Feature Description...................................................................................................................................... 10
Application and Implementation...................................................................................................................... 12
Application Information ................................................................................................................................ 12
Tape and Reel Information................................................................................................................................ 13
Package Outline Dimensions........................................................................................................................... 14
SOP8............................................................................................................................................................ 14
Order Information.............................................................................................................................................. 15
IMPORTANT NOTICE AND DISCLAIMER......................................................................................................... 16
www.3peak.com
2 / 16
GA20230801A6
TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
Product Family Table
Order Number
Threshold Voltage (VTH)
Package Marking
Package
TPV706VL1-SR (1)
1.58
V6V
SOP8
TPV706WL1-SR (1)
1.67
V6W
SOP8
TPV706YL1-SR (1)
2.19
V6Y
SOP8
(1)
2.32
V6Z
SOP8
TPV706RL1-SR
2.63
V6R
SOP8
TPV706SL1-SR
2.93
V6S
SOP8
TPV706TL1-SR
3.08
V6T
SOP8
TPV706ML1-SR
4.38
V6M
SOP8
TPV706LL1-SR
4.63
V6L
SOP8
TPV706ZL1-SR
(1) For future products, contact the 3PEAK factory for more information and samples.
Revision History
Date
Revision
2019-01-01
Rev.A.1
Initial version.
2019-05-28
Rev.A.2
Added WDI pulse interval spec.
2022-06-25
Rev.A.3
2022-08-29
Rev.A.4
Added WDI pulse interval spec.
2023-08-15
Rev.A.5
Added package tape and reel information, and updated datasheet format.
2024-07-09
Rev.A.6
Corrected typo in order information, corrected typo in typical application circuit.
www.3peak.com
Notes
Updated note for MR input pulse width, update to latest datasheet format and add
WDI to /WDO time information.
3 / 16
GA20230801A6
TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
Pin Configuration and Functions
TPV706
SOP8 Package
Top View
MR
11
88
WDO
VCC
22
77
RESET
GND
33
66
WDI
PFI
4
55
PFO
Table 1. Pin Functions: TPV706
Pin
I/O
Description
No.
Name
1
MR
I
2
VCC
P
Power supply voltage being monitored.
3
GND
G
Ground. This pin should be connected to ground reference.
4
PFI
I
5
PFO
O
6
7
8
www.3peak.com
WDI
RESET
WDO
Manual Reset Input. MR low asserts RESET pin. It features an
internal pull-up current.
Power fail input. When PFI is less than 1.25-V, PFO goes low. If
unused, connect PFI to GND.
Power fail output. It goes low when PFI is less than 1.25-V,
otherwise stays high.
I
Watchdog Input. Generates a reset if the voltage on the pin
remains low or high for the duration of the watchdog timeout. The
timer is cleared if a logic transition occurs on this pin or if a reset is
generated. Floating WDI disables the watchdog function.
O
Active-Low Reset Push-Pull Output Stage. Asserted whenever
VCC is below the reset threshold or by a low signal on the MR
input. It remains low for 200-ms after VCC goes above the reset
threshold or MR goes from low to high. A watchdog timeout does
not trigger RESET.
O
Watchdog Output. Pulls low if WDI remains low or high for the
duration of the watchdog timeout, and does not go high again
until the watchdog is cleared. Whenever VCC is below the reset
threshold, WDO stays low. As soon as VCC rises above the reset
threshold, WDO goes high with no delay.
4 / 16
GA20230801A6
TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
Specifications
Absolute Maximum Ratings
Parameter
Min
Max
Unit
−0.3
6
V
Output Current
20
mA
TJ
Maximum Junction Temperature
150
°C
TA
Operating Temperature Range
−40
125
°C
TSTG
Storage Temperature Range
−65
150
°C
TL
Lead Temperature (Soldering 10 sec)
260
°C
VCC
Power Supply
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure
to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime.
(2) This data was taken with the JEDEC low effective thermal conductivity test board.
(3) This data was taken with the JEDEC standard multilayer test boards.
ESD, Electrostatic Discharge Protection
Parameter
Condition
Minimum Level
Unit
(1)
4
kV
2
kV
HBM
Human Body Model ESD
ANSI/ESDA/JEDEC JS-001
CDM
Charged Device Model ESD
ANSI/ESDA/JEDEC JS-002 (2)
(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.
(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.
Thermal Information
Package Type
θJA
θJC
Unit
SOP8
143
60
°C/W
www.3peak.com
5 / 16
GA20230801A6
TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
Electrical Characteristics
All test conditions: VCC = 1.53 V to 5.5 V, TA = −40°C to 125°C, unless otherwise noted.
Parameter
Conditions
Min
Typ
Max
Unit
5.5
V
4
15
μA
6
20
μA
Supply Voltage and Current
VCC
ICC
Operating Supply Voltage
Supply Current
1
WDI and MR unconnected (VCC
= 1.8 V)
WDI and MR unconnected (VCC
= 5 V)
VTH
Reset Threshold Voltage
TPV706V
1.51
1.58
1.63
V
TPV706W
1.62
1.67
1.71
V
TPV706Y
2.12
2.19
2.25
V
TPV706Z
2.25
2.32
2.38
V
TPV706R
2.55
2.63
2.70
V
TPV706S
2.82
2.93
3.00
V
TPV706T
3.00
3.08
3.15
V
TPV706M
4.25
4.38
4.5
V
TPV706L
4.5
4.63
4.75
V
Reset Threshold Temperature
80
Coefficient
2
VHYS
Reset Threshold Hysteresis
tRD
VCC to Reset Delay
tRP
Reset Timeout Period
VOL
Reset Output Voltage Low (Push- VCC ≥ 1 V, ISINK = 50 μA
Pull)
ISINK = 1.2 mA @ Vcc ≥ 2 V
VOH
Reset Output Voltage High
(Push-Pull)
×
140
ISOURCE = 800 μA, @ VCC≥ 5 V
ppm/°C
VTH
1000
mV
20
μs
200
280
ms
0.3
V
0.4
V
0.7 ×
VCC
V
MR Pin
0.3 ×
VCC
VIL_MR
MR Input Threshold VIL
VIH_MR
MR Input Threshold VIH
0.7 ×
VCC
V
tPW_MR
MR Input Pulse Width (1)
6
μs
tGR_MR
MR Glitch Rejection
100
td_MR
MR to Reset Delay
1
IMR_V0
MR Pull-up Current
tWD
Watchdog Timeout Period
www.3peak.com
VCC = 3V
ns
6
80
1
6 / 16
1.6
V
μs
μA
2.4
sec
GA20230801A6
TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
Parameter
tPW_WD
Conditions
WDI Pulse Width 50 ns
Min
Typ
Max
50
Parameter
Conditions
VIL_WDI
WDI input threshold VIL
VIH_WDI
WDI input threshold VIH
IWDI
WDI input current
VOL_WDO
WDO VOL
ISINK = 1.2 mA @ VCC ≥ 5 V
VOH_WDO
WDO VOH
ISOURCE = 800 μA @ Vcc≥ 5 V
Min
Unit
ns
Typ
Max
Unit
0.3 ×
VCC
V
0.7 ×
VCC
V
VWDI = VCC
20
μA
VWDI = 0
-15
μA
0.4
0.7 x
V
V
VCC
PFI and PFO
VTH_PFI
Power fail input threshold
PFI falling
1.18
VOL_PFO
PFO VOL
ISINK = 1.6 mA @ VCC ≥ 5 V
VOH_PFO
PFO VOH
ISOURCE = 800 μA @ VCC ≥ 5 V
0.7 x
VCC
1.25
1.32
V
0.4
V
V
(1) MR pulse width given by customer in application should be longer than minimum value of MR input pulse width
requirement.
www.3peak.com
7 / 16
GA20230801A6
TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
Typical Performance Characteristics
All test conditions: VCC = 5 V, TA = + 25°C, unless otherwise noted.
Figure 1. Supply Current vs Temperature
Figure 2. Normalized RESET Timeout Period vs.
Temperature
Figure 3. Normalized RESET Threshold vs Temperature
Figure 4. Voltage Output Low vs ISINK
Figure 5. Voltage Output Low vs. ISOURCE
Figure 6. Reset Output Voltage vs. Supply Voltage
www.3peak.com
8 / 16
GA20230801A6
TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
1.5
WDI
PFI(V)
5
PFO(V)
WDO
0
0
50
100
150
0
0
2
Time(us)
4
6
Time(s)
Figure 7. PFI vs. PFO
Figure 8. WDI vs. WDO
WDI
MR
RST
RST
WDO
0
5
10
0
Time(s)
500
1000
1500
Time(ms)
Figure 9. WDI vs. RST and WDO
Figure 10. MR vs. RST
VCC(V)
3
RST
WDO
0
0
500
1000
1500
Time(ms)
Figure 11. Vcc vs. RST and WDO
www.3peak.com
9 / 16
GA20230801A6
TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
Detailed Description
Overview
The TPV706 provides supply voltage supervision, watchdog function, manual reset function, as well as a 1.25-V power-fail
comparator.
Functional Block Diagram
Figure 12. Functional Block Diagram
Feature Description
RESET Output
The TPV706 features an active-low push-pull output. The reset signal is guaranteed to be logic low for VCC down to 1-V. The
reset output is asserted when VCC is below the reset threshold (VTH), or when MR is driven low. Reset remains asserted for
the duration of the reset active timeout period (tRP) after VCC rises above the reset threshold, or after MR transitions from low
to high. Figure 13 shows the reset (active low) outputs.
www.3peak.com
10 / 16
GA20230801A6
TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
VTH
VCC
VTH
0V
RESET
tRP
tRD
0V
Figure 13. Reset Timing Diagram
Manual RESET Input
The TPV706 features a manual reset input (MR), which, when driven low, asserts the reset output. When MR transitions from
low to high, reset remains asserted for the duration of the reset active timeout period before de-asserting.
The MR input has an internal pull-up current so that the input is always high when unconnected. Noise immunity is provided
on the MR input, and the fast and negative-going transients are ignored. A 0.1-μF capacitor between MR and ground
provides additional noise immunity.
Watchdog Input
The TPV706 features a watchdog timer, which monitors microprocessor activity. A timer circuit is cleared with every low-tohigh or high-to-low logic transition on the watchdog input pin (WDI). If the timer counts through the preset watchdog timeout
period (tWD), the watchdog output (WDO) goes low, a low to high or high to low transition on the WDI pin clears the watchdog
timer. The delay time from WDI toggling to WDO going high is within 35-ms. The microprocessor is required to toggle the
WDI pin to avoid being reset. Whenever VCC is below the reset threshold, WDO stays low. As soon as VCC rises above the
reset threshold, WDO goes high with no delay. Figure 14 shows the watchdog timing.
VTH
VCC
WDI
(0 or 1, not float)
tWD
WDO
Figure 14. Watchdog Timing
Power-Fail Detector
The power-fail detector is a 1.25-V comparator, which can monitor an external power supply through a resistive divider. When
the voltage on the PFI is lower than 1.25-V, the comparator output goes low, indicating a power fail, which can be used as an
early warning of the power fail.
www.3peak.com
11 / 16
GA20230801A6
TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
Application and Implementation
Note
Information in the following application sections is not part of the 3PEAK’s component specification and 3PEAK does not
warrant its accuracy or completeness. 3PEAK’s customers are responsible for determining suitability of components for
their purposes. Customers should validate and test their design implementation to confirm system functionality.
Application Information
Figure 15 shows the typical application circuit of TPV706. Microprocessor activity is monitored using WDI. When the WDI
remains low or high for the duration of the watchdog timeout, the WDO will trigger a manual reset to MCU. The MCU can
drive the MR from high to low and trigger the RESET.
5V
Vx
VCC
/PFO
INT
/RESET
PFI
TPV706
GND
/RESET
WDI
I/O
/WDO
I/O
/MR
I/O
Microprocessor
Figure 15. TPV706 Typical Application Circuit
www.3peak.com
12 / 16
GA20230801A6
TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
Tape and Reel Information
Order Number
Package
TPV706xx-SR
SOP8
www.3peak.com
D1 (mm) W1 (mm) A0 (mm) B0 (mm) K0 (mm)
330
17.6
6.5
13 / 16
5.4
2
P0 (mm) W0 (mm)
8
12
Pin1
Quadrant
Q1
GA20230801A6
TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
Package Outline Dimensions
SOP8
www.3peak.com
14 / 16
GA20230801A6
TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
Order Information
Operating Temperature
Range
Package
Marking Information
MSL
Transport Media, Quantity
Eco Plan
TPV706VL1-SR (1)
−40 to 125°C
SOP8
V6V
1
Tape and Reel, 4000
Green
TPV706WL1-SR (1)
−40 to 125°C
SOP8
V6W
1
Tape and Reel, 4000
Green
TPV706YL1-SR (1)
−40 to 125°C
SOP8
V6Y
1
Tape and Reel, 4000
Green
(1)
−40 to 125°C
SOP8
V6Z
1
Tape and Reel, 4000
Green
TPV706RL1-SR
−40 to 125°C
SOP8
V6R
1
Tape and Reel, 4000
Green
TPV706SL1-SR
−40 to 125°C
SOP8
V6S
1
Tape and Reel, 4000
Green
TPV706TL1-SR
−40 to 125°C
SOP8
V6T
1
Tape and Reel, 4000
Green
TPV706ML1-SR
−40 to 125°C
SOP8
V6M
1
Tape and Reel, 4000
Green
TPV706LL1-SR
−40 to 125°C
SOP8
V6L
1
Tape and Reel, 4000
Green
Order Number
TPV706ZL1-SR
(1) For future products, contact the 3PEAK factory for more information and samples.
Green: 3PEAK defines "Green" to mean RoHS compatible and free of halogen substances.
www.3peak.com
15 / 16
GA20230801A6
TPV706
Low-Voltage Supervisory Circuits with Power-Fail Detector
IMPORTANT NOTICE AND DISCLAIMER
Copyright© 3PEAK 2012-2024. All rights reserved.
Trademarks. Any of the 思瑞浦 or 3PEAK trade names, trademarks, graphic marks, and domain names contained in
this document /material are the property of 3PEAK. You may NOT reproduce, modify, publish, transmit or distribute any
Trademark without the prior written consent of 3PEAK.
Performance Information. Performance tests or performance range contained in this document/material are either results
of design simulation or actual tests conducted under designated testing environment. Any variation in testing environment or
simulation environment, including but not limited to testing method, testing process or testing temperature, may affect actual
performance of the product.
Disclaimer. 3PEAK provides technical and reliability data (including data sheets), design resources (including reference
designs), application or other design recommendations, networking tools, security information and other resources "As Is".
3PEAK makes no warranty as to the absence of defects, and makes no warranties of any kind, express or implied, including
without limitation, implied warranties as to merchantability, fitness for a particular purpose or non-infringement of any thirdparty’s intellectual property rights. Unless otherwise specified in writing, products supplied by 3PEAK are not designed to
be used in any life-threatening scenarios, including critical medical applications, automotive safety-critical systems, aviation,
aerospace, or any situations where failure could result in bodily harm, loss of life, or significant property damage. 3PEAK
disclaims all liability for any such unauthorized use.
www.3peak.com
16 / 16
GA20230801A6
