TPS3619-33-EP, TPS3619-50-EP
TPS3620-33-EP, TPS3620-50-EP
www.ti.com
SGLS350C – JULY 2006 – REVISED SEPTEMBER 2010
BACKUP-BATTERY SUPERVISORS FOR RAM RETENTION
Check for Samples: TPS3619-33-EP, TPS3619-50-EP, TPS3620-33-EP, TPS3620-50-EP
FEATURES
APPLICATIONS
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1
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Supply Current of 40 mA (Max)
Battery-Supply Current of 100 nA (Max)
Precision Supply-Voltage Monitor 3.3 V, 5 V,
and Other Options on Request
Backup-Battery Voltage Can Exceed VDD
Power-On Reset Generator with Fixed 100-ms
Reset Delay Time
Voltage Monitor for Power-Fail or Low-Battery
Monitoring
Battery Freshness Seal (TPS3619)
Pin-to-Pin Compatible With MAX819, MAX703,
and MAX704
8-Pin Mini Small-Outline Package (MSOP)
Package
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(1)
DESCRIPTION
The TPS3619 and TPS3620 families of supervisory
circuits monitor and control processor activity by
providing backup-battery switchover for data retention
of CMOS RAM.
During power on, RESET is asserted when the
supply voltage (VDD or VBAT) becomes higher than 1.1
V. Thereafter, the supply voltage supervisor 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 the
supply voltage drops below VIT, the output becomes
active (low) again.
SUPPORTS DEFENSE, AEROSPACE,
AND MEDICAL APPLICATIONS
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Fax Machines
Set-Top Boxes
Advanced Voice-Mail Systems
Portable Battery-Powered Equipment
Computer Equipment
Advanced Modems
Automotive Systems
Portable Long-Time Monitoring Equipment
Point-of-Sale Equipment
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
The product spectrum is designed for supply voltages
of 3.3 V and 5 V. The TPS3619 and TPS3620 are
available in an 8-pin MSOP package and are
characterized for operation over a temperature range
of –55°C to 125°C.
Additional temperature ranges available - contact factory
DGK PACKAGE
(TOP VIEW)
VOUT
VDD
GND
PFI
1
8
2
7
3
6
4
5
VBAT
RESET
MR
PFO
ACTUAL SIZE
3,05 mm x 4,98 mm
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 © 2006–2010, Texas Instruments Incorporated
