CIRCUITS. TPS3837K33-EP Datasheet

TPS3837K33-EP Datasheet PDF


Part Number

TPS3837K33-EP

Description

NANOPOWER SUPERVISORY CIRCUITS

Manufacture

etcTI

Total Page 17 Pages
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TPS3837K33-EP Datasheet
TPS3836E18-EP / J25-EP / H30-EP / L30-EP / K33-EP
TPS3837E18-EP / J25-EP / L30-EP / K33-EP
TPS3838E18-EP / J25-EP / L30-EP / K33-EP
www.ti.com.................................................................................................................................................... SGLS322D – MAY 2006 – REVISED NOVEMBER 2008
NANOPOWER SUPERVISORY CIRCUITS
FEATURES
1
ESD Protection Exceeds 2000 V Per
MIL-STD-883, Method 3015; Exceeds 200 V
Using Machine Model (C = 200 pF, R = 0)
Supply Current of 220 nA (Typ)
Precision Supply Voltage Supervision Range:
1.8 V, 2.5 V, 3 V, 3.3 V
Power-On Reset Generator With Selectable
Delay Time of 10 ms or 200 ms
Push/Pull RESET Output (TPS3836), RESET
Output (TPS3837), or
Open-Drain RESET Output (TPS3838)
Manual Reset
5-Pin SOT-23 Package
SUPPORTS DEFENSE, AEROSPACE,
AND MEDICAL APPLICATIONS
Controlled Baseline
One Assembly/Test Site
One Fabrication Site
Available in Military (–55°C/125°C)
Temperature Range(1)
Extended Product Life Cycle
Extended Product-Change Notification
Product Traceability
TPS3836, TPS3838
DBV PACKAGE
(TOP VIEW)
CT 1 5 VDD
GND 2
MR 3 4 RESET
TPS3837
DBV PACKAGE
(TOP VIEW)
CT 1 5 VDD
GND 2
MR 3 4 RESET
APPLICATIONS
Applications Using Automotive Low-Power
DSPs, Microcontrollers, or Microprocessors
Battery-Powered Equipment
Intelligent Instruments
Wireless Communication Systems
Automotive Systems
(1) Custom temperature ranges available
DESCRIPTION
The TPS3836, TPS3837, TPS3838 families of supervisory circuits provide circuit initialization and timing
supervision, primarily for digital signal processing (DSP) and processor-based systems.
During power on, RESET is asserted when the supply voltage VDD becomes higher than 1.1 V. Thereafter, the
supervisory circuit monitors VDD and keeps RESET output active as long as VDD remains below the threshold
voltage (VIT). An internal timer delays the return of the output to the inactive state (high) to ensure proper system
reset. The delay time starts after VDD has risen above VIT.
When CT is connected to GND, a fixed delay time of typical 10 ms is asserted. When connected to VDD, the
delay time is typically 200 ms.
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.
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.
Copyright © 2006–2008, Texas Instruments Incorporated

TPS3837K33-EP Datasheet
TPS3836E18-EP / J25-EP / H30-EP / L30-EP / K33-EP
TPS3837E18-EP / J25-EP / L30-EP / K33-EP
TPS3838E18-EP / J25-EP / L30-EP / K33-EP
SGLS322D – MAY 2006 – REVISED NOVEMBER 2008.................................................................................................................................................... www.ti.com
When the supply voltage drops below VIT, the output becomes active (low) again.
All the devices of this family have a fixed-sense VIT set by an internal voltage divider.
The TPS3836 has an active-low push-pull RESET output. The TPS3837 has active-high push-pull RESET, and
the TPS3838 integrates an active-low open-drain RESET output.
TPS3836K33
VDD
MSP430
VCC
CT
RESET
RST
Xin
Lithium
Battery
MR
Xout
Quartz
3.6 V
T GND
VSS 32 kHz
Figure 1. Typical Operating Circuit
The product spectrum is designed for supply voltages of 1.8 V, 2.5 V, 3 V, and 3.3 V. The circuits are available in
a 5-pin SOT-23 package. The TPS3836, TPS3837, and TPS3838 families are characterized for operation over a
temperature range of –55°C to 125°C.
2 Submit Documentation Feedback
Copyright © 2006–2008, Texas Instruments Incorporated
Product Folder Link(s): TPS3836E18-EP / J25-EP / H30-EP / L30-EP / K33-EP TPS3837E18-EP / J25-EP / L30-EP /
K33-EP TPS3838E18-EP / J25-EP / L30-EP / K33-EP


Features Datasheet pdf TPS3836E18-EP / J25-EP / H30-EP / L30-EP / K33-EP TPS3837E18-EP / J25-EP / L30- EP / K33-EP TPS3838E18-EP / J25-EP / L3 0-EP / K33-EP www.ti.com............... ....................................... ....................................... ....................................... ................ SGLS322D – MAY 2006 – REVISED NOVEMBER 2008 NANOPOWER SUP ERVISORY CIRCUITS FEATURES 1 • ESD P rotection Exceeds 2000 V Per MIL-STD-88 3, Method 3015; Exceeds 200 V Using Mac hine Model (C = 200 pF, R = 0) • Supp ly Current of 220 nA (Typ) • Precisio n Supply Voltage Supervision Range: 1.8 V, 2.5 V, 3 V, 3.3 V • Power-On Rese t Generator With Selectable Delay Time of 10 ms or 200 ms • Push/Pull RESET Output (TPS3836), RESET Output (TPS3837 ), or Open-Drain RESET Output (TPS3838) • Manual Reset • 5-Pin SOT-23 Pack age SUPPORTS DEFENSE, AEROSPACE, AND ME DICAL APPLICATIONS • Controlled Basel ine • One Assembly/Test Site • One Fabrication Site • Available in Military (–55°C/125°C) Temperature Range(1) • Extended .
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