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參數(shù)資料
| 型號(hào)： | TPS3620-50DGKTG4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | 3.05 X 4.98 MM, GREEN, PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 1/17頁 |
| 文件大?。?/td> | 494K |
| 代理商： | TPS3620-50DGKTG4 |
1
FEATURES
DESCRIPTION
APPLICATIONS
VBAT
RESET
MR
PFO
8
7
6
5
1
2
3
4
VOUT
VDD
GND
PFI
DGK PACKAGE
(TOP VIEW)
ACTUAL SIZE
3,05 mm x 4,98 mm
TYPICAL OPERATING CIRCUIT
VDD
VBAT
PFI
Backup
Battery
RESET
PFO
VOUT
GND
Rx
Ry
External
Source
0.1
F
Power
Supply
GND
RESET
I/O
VCC
Switchover
Capacitor
0.1
F
TPS3619
TPS3620
Microcontroller
or
Microprocessor
Manual
Reset
MR
SLVS387H – APRIL 2001 – REVISED DECEMBER 2007
www.ti.com
BACKUP-BATTERY SUPERVISORS FOR RAM RETENTION
2
Supply Current of 40 A (Max)
Battery-Supply Current of 100 nA (Max)
The TPS3619 and TPS3620 families of supervisory
circuits monitor and control processor activity by
Precision Supply Voltage Monitor 3.3 V, 5 V,
providing backup-battery switchover for data retention
Other Options on Request
of CMOS RAM.
Backup-Battery Voltage Can Exceed V
DD
During power on, RESET is asserted when the
Power On Reset Generator With Fixed 100-ms
supply voltage (VDD or VBAT) becomes higher than 1.1
Reset Delay Time
V. Thereafter, the supply voltage supervisor monitors
Voltage Monitor For Power-Fail or Low-Battery
VDD and keeps RESET output active as long as VDD
Monitoring
remains below the threshold voltage (VIT). An internal
timer delays the return of the output to the inactive
Battery Freshness Seal (TPS3619)
state (high) to ensure proper system reset. The delay
Pin-For-Pin Compatible With MAX819,
time starts after VDD has risen above VIT. When the
MAX703, and MAX704
supply voltage drops below VIT, the output becomes
8-Pin MSOP Package
active (low) again.
Temperature Range –40°C to +85°C
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
Fax Machines
of –40
°C to +85°C.
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
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
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright 2001–2007, 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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