The TPS38x-Q1 is a 65 V-input voltage detector with
1 μA IDD, 1% accuracy, and 10 μs detection time in a
6.25 mm2 package. This device can be connected
directly to 12 V / 24 V automotive battery system for
continous monitoring of over (OV) and under (UV)
voltage conditions; with its internal resistor divider, it
offers the smallest total solution size. Wide hysteresis
voltage options are available to ignore cold crank,
start-stop and various car battery voltage transients.
Built-in hysteresis on the SENSE pins prevents false
reset signals when monitoring a supply voltage rail.
The separate VDD and SENSE pins allow for the
redundancy sought by high-reliability automotive
systems and SENSE can monitor higher and lower
voltages than VDD. Optional use of external resistors
are supported by the high impedance input of the
SENSE pins. Both CTSx and CTRx provide delay
adjustability on the rising and falling edges of the
RESET signals. Also, CTSx functions as a debouncer
by ignoring voltage glitches on the monitored voltage
rails; CTRx operates as a manual reset (MR) that can
be used to force a system reset.
The TPS38x-Q1 is available in a small 2.5-mm×2.5mm×0.1-mm WSON 10-pin wettable flanks package
allowing the facillitation for Automatic Optical
Inspection (AOI) and low resolution X-ray inspection.
The central pad is non-conductive to increase the
creepage between VDD and GND per guidelines in
IEC60664. TPS38x-Q1 operates over –40°C to
+125°C (TA).
Device Information
PART NUMBERPACKAGE
TPS38x-Q1WSON-10 (DSK)2.5 mm × 2.5 mm
(1)For package details, see the mechanical drawing addendum
at the end of the data sheet.
(1)
BODY SIZE (NOM)
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
4O Output Reset Signal For Channel 1: See Figure 5-1
5O Output Reset Signal For Channel 2: See Figure 5-1
I/ODESCRIPTION
_Capacitor Time Delay Reset 1. The CTR1 pin offers a user-programmable reset release delay for
Table 6-1. Pin Functions Generic
Reset1. Connect an external capacitor on this pin to adjust time delay. When not in use leave pin
floating for the fastest time delay.
Manual Reset (CTR1/ MR):If this pin is driven low the RESET1 output will reset, leave pin floating or
connected to a cap to release reset. This pin should not be driven high.
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Product Folder Links: TPS38X-Q1
5
ADVANCE INFORMATION
TPS38X-Q1
SNVSBI8A – AUGUST 2020 – REVISED JANUARY 2021
Table 6-1. Pin Functions Generic (continued)
PIN
NAMENO.
CTR2/ MR9
GND10_Ground
NCPAD-
CTS17
CTS28
TPS38A
RESET1_UVOD4O Reset output signal for Sense 1. Topology: Undervoltage, Open Drain, Active Low topology.
RESET2_UVOD5O Reset output signal for Sense 2. Topology: Undervoltage, Open Drain, Active Low topology.
TPS38B
RESET1_UVPP4O Reset output signal for Sense 1. Topology: Undervoltage, Push Pull, Active Low topology.
RESET2_UVOD5O Reset output signal for Sense 2. Topology: Undervoltage, Open Drain, Active Low topology.
TPS38D
RESET1_UVPP4O Reset output signal for Sense 1. Topology: Undervoltage, Push Pull, Active Low topology.
RESET2_UVOD5O Reset output signal for Sense 2. Topology: Undervoltage, Open Drain, Active High topology.
TPS38E
RESET1_UVPP4O Reset output signal for Sense 1. Topology: Undervoltage, Push Pull, Active High topology.
RESET2_UVOD5O Reset output signal for Sense 2. Topology: Undervoltage, Open Drain, Active High topology.
TPS38F
RESET1_UVPP4O Reset output signal for Sense 1. Topology: Undervoltage, Push Pull, Active High topology.
RESET2_UVOD5O Reset output signal for Sense 2. Topology: Undervoltage, Open Drain, Active Low topology.
TPS38G
RESET1_UVOD4O Reset output signal for Sense 1. Topology: Undervoltage, Open Drain, Active High topology.
RESET2_UVOD5O Reset output signal for Sense 2. Topology: Undervoltage, Open Drain, Active High topology.
TPS38H
RESET1_UVOD4O Reset output signal for Sense 1. Topology: Undervoltage, Open Drain, Active High topology.
RESET2_UVOD5O Reset output signal for Sense 2. Topology: Undervoltage, Open Drain, Active Low topology.
TPS38J
RESET1_OVOD4O Reset output signal for Sense 1. Topology: Overvoltage, Open Drain, Active Low topology.
RESET2_OVOD5O Reset output signal for Sense 2. Topology: Overvoltage, Open Drain, Active Low topology.
TPS38K
RESET1_OVOD4O Reset output signal for Sense 1. Topology: Overvoltage, Open Drain, Active High topology.
RESET2_OVOD5O Reset output signal for Sense 2. Topology: Overvoltage, Open Drain, Active High topology.
TPS38L
RESET1_OVOD4O Reset output signal for Sense 1. Topology: Overvoltage, Open Drain, Active High topology.
RESET2_OVOD5O Reset output signal for Sense 2. Topology: Overvoltage, Open Drain, Active Low topology.
TPS38M
RESET1_OVPP4O Reset output signal for Sense 1. Topology: Overvoltage, Push Pull, Active Low topology.
RESET2_OVOD5O Reset output signal for Sense 2. Topology: Overvoltage, Open Drain, Active Low topology.
I/ODESCRIPTION
_Capacitor Time Delay Reset 2. The CTR2 pin offers a user-programmable reset release delay for
Reset2. Connect an external capacitor on this pin to adjust time delay. When not in use leave pin
floating for the fastest time delay.
Manual Reset (CTR2/ MR):If this pin is driven low the RESET2 output will reset, leave pin floating or
connected to a cap to release reset. This pin should not be driven high.
Not internally connected, is recommended to leave the central pad floating for wider creepage
between VDD and GND.
_Capacitor Time Delay Sense 1. The CTS1 pin offers a user-programmable sense delay for Sense1.
Connect an external capacitor on this pin to adjust time delay. When not in use leave pin floating for
the fastest time delay.
_Capacitor Time Delay Sense 2. The CTS2 pin offers a user-programmable sense delay for Sense2.
Connect an external capacitor on this pin to adjust time delay. When not in use leave pin floating for
the fastest time delay.
over operating free-air temperature range, unless otherwise noted
VoltageVDD, V
VoltageV
CurrentI
Temperature
Temperature
Temperature
(2)
(2)
(2)
SENSE1,VSENSE2
, V
CTS2
, I
RESET2
, V
CTS1
RESET1
Operating junction temperature, T
Operating Ambient temperature, T
Storage, T
stg
(1)Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under
Recommended Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device
reliability.
(2)As a result of the low dissipated power in this device, it is assumed that TJ = TA.
CTR1
, I
RESET1
, V
, V
CTR2
, I
RESET1
RESET2
, V
7.2 ESD Ratings
Human body model (HBM), per AEC Q100-002
V
(1)AEC Q100-002 indicates that HBM stressing shall be in accordance with the ANSI/ESDA/JEDEC JS-001 specification.
Electrostatic discharge
(ESD)
Charged device model (CDM), per
AEC Q100-011
RESET2
J
A
(1)
, V
RESET1
, V
RESET2
MINMAXUNIT
–0.370
–0.36
10mA
–40150°C
–40150°C
–65150°C
VALUE UNIT
(1)
±2000
±750
V
7.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
MINNOMMAXUNIT
VoltageV
VoltageV
VoltageV
CurrentI
T
J
DD
SENSE1,VSENSE2
, V
CTS1
CTS2
, I
RESET1
RESET2
, V
, V
CTR1
, I
RESET1
RESET1
, V
CTR2
, V
, I
RESET2
RESET2
, V
RESET1
, V
RESET2
Junction temperature (free air temperature)–40125°C
) = 10 kΩ, Output reset Pullup Voltage (V
free-air temperature range – 40°C to 125°C, unless otherwise noted. Typical values are at TJ = 25°C and VDD = 16 V and
VIT = 6.5 V (VIT refers to V
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
VDD
V
DD
(2)
UVLO
V
POR
V
POR
I
DD
SENSE (Input)
I
SENSE
I
SENSE
I
SENSE
I
SENSE
V
ITN
V
ITP
V
HYS
RESET (output)
I
lkg(OD)
(4)
V
OL
V
OH_DO
(4)
V
OH
Supply Voltage2.765V
Under Voltage LockoutV
Power on Reset Voltage
RESET, Active Low
(Open-Drain, Push-Pull )
Power on Reset Voltage
RESET, Active High
(Push-Pull )
Supply current into VDD pin
Input current
(SENSE1, SENSE2)
Input current
(SENSE1, SENSE2)
Input current
(SENSE1, SENSE2)
Input current
(SENSE1, SENSE2)
Input Threshold Negative
(Under-Voltage)
Input Threshold Positive
(Over-Voltage)
Hysteresis Accuracy
Open-Drain leakage
(RESET1, RESET2)
Low level output voltage
High level output voltage
dropout
(VDD - V
(Push-Pull only)
) = 10 kΩ, Output reset Pullup Voltage (V
free-air temperature range – 40°C to 125°C, unless otherwise noted. Typical values are at TJ = 25°C and VDD = 16 V and
VIT = 6.5 V (VIT refers to V
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
Capacitor Timing (CTS, CTR)
R
CTR
R
CTS
Manual Reset (MR)
V
MR_IH
V
MR_IH
V
MR_IL
V
MR_IL
(1)Hysteresis is with respect to V
(2)When VDD voltage falls below UVLO, reset is asserted for Output 1 and Output 2. VDD slew rate ≤ 100mV/µs
(3)For adjustable voltage guidelines and resistor selection refer to Adjustable Voltage Thresholds in Application and Implementation
section
(4)For VOH and VOL relation to output variants refer to Timing Figures after the Timing Requirement Table
(5)V
POR
Internal resistance
(CTR1 / MR , CTR2 / MR )
Internal resistance
(C
TS1, CTS2
CTR1 / MR and
CTR2 / MR pin
logic high input
CTR1 / MR and
CTR2 / MR pin
logic high input
CTR1 / MR and
CTR2 / MR pin
logic low input
CTR1 / MR and
CTR2 / MR pin
logic low input
is the minimum VDD voltage for a controlled output state. Below VPOR, the output cannot be determined. VDD dv/dt ≤ 100mV/µs
us, over the operating free-air temperature range – 40°C to 125°C, unless otherwise noted. Typical values are at TJ = 25°C
and VDD=16 V and VIT = 6.5 V (VIT refers to either V
PARAMETERTEST CONDITIONSMINTYPMAXUNIT
Common timing parameters
VIT = 2.7 V to 36 V
C
= C
= C
= C
= C
TR1
TR2
TR2
TS2
TS2
= C
= C
= Open
= Open
= Open
= Open
TR2
TR1
t
CTR
Reset release time delay
(CTR1/MR, CTR2/MR)
20% Overdrive from Hysteresis
(3)
VIT = 800 mV
C
TR1
20% Overdrive from Hysteresis
VIT = 2.7 V to 36 V
C
TS1
t
CTS
Sense detect time delay
(CTS1, CTS2)
(4)
20% Overdrive from V
VIT = 800 mV
C
TS1
20% Overdrive from V
C
t
SD
(1)C
Startup Delay
= Reset delay channel 1, C
TR1
C
= Sense delay channel 1, C
TS1
(2)
TR1/MR
= Reset delay channel 2,
TR2
= Sense delay channel 2
TS2
(2)During the power-on sequence,VDD mustbe at or above VDD (MIN) for at least t
V
.
SENSE
t
time includes the propagation delay (C
SD
(3)CTR Reset detect time delay:
OVER-voltage active-LOW output is measure from V
UNDER-voltage active-LOW output is measure from V
OVER-voltage active-HIGH output is measure from V
UNDER-voltage active-HIGH output is measure from V
(4)CTS Sense detect time delay:
Active-low output is measure from VIT to VOL (or V
Active-high output is measured from VIT to VOH
VIT refers to either V
ITN
or V
ITP
or V
ITN
).
ITP
IT
IT
= Open
= Open). Capaicitor in C
TR2
to V
ITP - HYS
ITP - HYS
Pullup
ITN + HYS
ITN + HYS
)
to V
to V
to V
OH
OH
OL
OL
(1)
, Output reset Pullup Resistor (R
) = 10 pF, VDD and SENSE slew rate = 1V/
LOAD
100us
40us
3490us
811us
before the output is in the correct state based on