TPS3831 Datasheet, PDF (1/24 Pages) Texas Instruments – Ultralow Power, Supply Voltage Supervisor

TPS3831
TPS3839
www.ti.com
SBVS193B – JUNE 2012 – REVISED APRIL 2013
Ultralow Power, Supply Voltage Supervisor
Check for Samples: TPS3831, TPS3839
FEATURES
1
•2 Ultralow Supply Current: 150 nA (typ)
• Operating Supply Voltage: 0.6 V to 6.5 V
• Valid Reset for V_DD > 0.6 V
• Push-Pull RESET Output
• Factory-Trimmed Reset Threshold Voltages
• Temperature Range: –40°C to +85°C
• Packages: 1-mm × 1-mm X2SON or 3-Pin
SOT23
APPLICATIONS
• Portable and Battery-Powered Equipment
• Industrial Equipment
• Cell Phones
• Glucose Monitors
• Metering
• Televisions
DESCRIPTION
The TPS3831 and TPS3839 (both referred to as the
TPS383x) are ultralow current (150 nA, typical),
voltage supervisory circuit that monitor a single
voltage. Both devices assert an active-low reset
signal whenever the V_DD supply voltage drops below
the factory-trimmed reset threshold voltage. The reset
output remains asserted for 200 ms (typical) after the
V_DD voltage rises above the threshold voltage. These
devices are designed to ignore fast transients on the
V_DD pin. Note that the TPS3831 includes a manual
reset input.
The ultralow current consumption of 150 nA makes
these voltage supervisors ideal for use in low-power
and portable applications. The TPS383x are specified
to have the correct output logic state for supply
voltages down to 0.6 V.
The TPS383x feature precision factory-trimmed
threshold voltages and extremely low-power
operation. The TPS3831 is available is a 4-pin 1-mm
× 1-mm (DQN) X2SON package. The TPS3839 is
available in a 3-pin SOT23 (DBZ) package or a 4-pin
1-mm × 1-mm (DQN) X2SON package.
TYPICAL APPLICATION
3.3 V
DBZ PACKAGE
SOT23-3
(TOP VIEW)
TPS3831
Only
C1
0.1 mF
VDD
TPS383xK33
MR
RESET
GND
Microprocessor
RST
GND
1
3
VDD
RESET
2
TPS3831
DQN PACKAGE
1-mm ´ 1-mm X2SON
(TOP VIEW)
TPS3839
DQN PACKAGE
1-mm ´ 1-mm X2SON
(TOP VIEW)
RESET 1
4 VDD
Thermal
Pad
MR 2
3 GND
RESET 1
4 VDD
Thermal
Pad
NC 2
3 GND
1
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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