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TPS3838K33DBVTG4 Fiches technique(PDF) 1 Page - Texas Instruments

No de pièce TPS3838K33DBVTG4
Description  NanoPower Supervisory Circuits
Download  16 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS3838K33DBVTG4 Fiches technique(HTML) 1 Page - Texas Instruments

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CT
N/C
(1)
MR
6
5
4
V
DD
GND
RESET
1
2
3
TPS3838DRV
2mmx2mmSON-6
(TOPVIEW)
GND
3
2
4
5
(TOPVIEW)
1
CT
GND
MR
V
DD
RESET
TPS3836,TPS3838
DBVPACKAGE
3
2
4
5
(TOPVIEW)
1
CT
GND
MR
V
DD
RESET
TPS3837
DBVPACKAGE
V
DD
GND
CT
MR
RESET
TPS3836K33
V
CC
V
SS
RST
MSP430
T
Lithium
Battery
3.6V
TypicalApplicationCircuit
TPS3836
TPS3837
TPS3838
www.ti.com
SLVS292E – JUNE 2000 – REVISED OCTOBER 2010
NanoPower Supervisory Circuits
Check for Samples: TPS3836, TPS3837, TPS3838
1
FEATURES
DESCRIPTION
23
Supply Current: 220 nA (typical)
The TPS3836, TPS3837, and TPS3838 families of
supervisory circuits provide circuit initialization and
Precision Supply Voltage Supervision Range:
timing
supervision,
primarily
for
DSP
and
1.8 V, 2.5 V, 3.0 V, and 3.3 V
processor-based systems.
Power-On Reset Generator With Selectable
During power-on, RESET is asserted when the
Delay Time: 10 ms or 200 ms
supply voltage VDD becomes higher than 1.1 V.
Push/Pull RESET Output (TPS3836), Push/Pull
Thereafter, the supervisory circuit monitors VDD and
RESET Output (TPS3837), or Open-Drain
keeps the RESET output active as long as VDD
RESET Output (TPS3838)
remains below the threshold voltage of VIT. An
Manual Reset
internal timer delays the return of the output to the
inactive state (high) to ensure proper system reset.
SOT23-5 and 2x2 SON-6 Packages
The delay time starts after VDD has risen above the
Temperature Range: –40°C to +85°C
threshold voltage VIT.
When CT is connected to GND, a fixed delay time of
APPLICATIONS
typical 10 ms is asserted. When connected to VDD,
Applications Using Low-Power DSPs,
the delay time is typically 200 ms. When the supply
Microcontrollers, or Microprocessors
voltage drops below the threshold voltage VIT, the
Portable- and Battery-Powered Equipment
output becomes active (low) again. All the devices of
Intelligent Instruments
this family have a fixed-sense threshold voltage (VIT)
Wireless Communication Systems
set by an internal voltage divider.
Notebook Computers
The TPS3836 has an active-low, push-pull RESET
Automotive Systems
output. The TPS3837 has an active-high, push-pull
RESET, and the TPS3838 integrates an active-low,
Applications Using the MSP430™
open-drain RESET output. The product spectrum is
blank
designed for supply voltages of 1.8 V, 2.5 V, 3.0 V,
blank
and 3.3 V. The circuits are available in either a
SOT23-5 or 2x2 SON-6 package. The TPS3836,
TPS3837, and TPS3838 families are characterized
for operation over a temperature range of –40°C to
+85°C.
(1)
N/C: Not connected.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
MSP430 is a trademark of Texas Instruments.
3
All other trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2000–2010, Texas Instruments Incorporated
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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