TPS3106E16 Datasheet, PDF (1/22 Pages) Texas Instruments – ULTRALOW SUPPLY CURRENT/SUPPLY VOLTAGE SUPERVISORY CIRCUITS

TPS31xxExx, TPS31xxH20, TPS31xxK33
www.ti.com
ULTRALOW SUPPLYĆCURRENT/SUPPLYĆVOLTAGE SUPERVISORY CIRCUITS
SLVS363B − AUGUST 2001 − REVISED SEPTEMBER 2004
features
D Precision Supply Voltage Supervision
Range: 0.9 V, 1.2 V, 1.5 V, 1.6 V,
2 V, 3.3 V
D High Trip Point Accuracy: 0.75%
D Supply Current of 1.2 µA (Typ)
D RESET Defined With Input Voltages as Low
as 0.4 V
D Power On Reset Generator With a Delay
Time of 130 ms
D Push/Pull or Open-Drain RESET Outputs
D SOT23-6 Package
D Temperature Range . . . −40°C to 85°C
TPS3103
DBV PACKAGE
(TOP VIEW)
RESET 1
6 V_DD
GND
2
5 _PFO
MR 3
4 PFI
TPS3106
DBV PACKAGE
(TOP VIEW)
RSTVDD 1
GND 2
6 V_DD
5 RSTSENSE
typical applications
D Applications Using Low-Power DSPs,
Microcontrollers or Microprocessors
D Portable/Battery-Powered Equipment
D Intelligent Instruments
D Wireless Communication Systems
D Programmable Controls
D Industrial Equipment
D Notebook/Desktop Computers
D Automotive Systems
MR 3
4 SENSE
TPS3110
DBV PACKAGE
(TOP VIEW)
RESET ¹
GND 2
6 V_DD
5 WDI
MR 3
4 SENSE
description
typical application circuit
The TPS310x, TPS311x families of supervisory
circuits provide circuit initialization and timing
supervision, primarily for DSP and processor-
based systems.
During power on, RESET is asserted when the
supply voltage (V_DD) becomes higher than 0.4 V.
Thereafter, the supervisory circuit monitors V_DD
and keeps the RESET output active as long as
V_DD remains below the threshold voltage (V_IT). An
internal timer delays the return of the output to the
inactive state to ensure proper system reset. The
delay time starts after V_DD has risen above the V_IT.
When the V_DD drops below the V_IT, the output
becomes active again.
3.3 V
1.6 V
R1
R2
GND
VDD
R3
TPS3106E33DBV
MR
RSTVDD
SENSE
RSTSENSE
GND
Vcore VIO
DSP
RESET
GND
All the devices of this family have a fixed-sense threshold voltage (V_IT) set by an internal voltage divider.
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