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3
2
4
5
DBV PACKAGE
(TOP VIEW)
1
TPS3123/T
PS3128
RESET
GND
MR
V
DD
WDI
3
2
4
5
1
TPS3124
RESET
GND
RESET
V
DD
WDI
3
2
4
5
1
TPS3125/
TPS3126
RESET
GND
RESET
V
DD
MR
MR
GND
V
DD
RESET
TPS3123J12
XF
RESET
CV
DD
DV
DD
GND
1.2 V
TMS320UVC5402
WDI
TPS3123-xx
TPS3124-xx, TPS3125-xx
TPS3126-xx, TPS3128-xx
www.ti.com
SLVS227E –AUGUST 1999– REVISED AUGUST 2011
ULTRA-LOW VOLTAGE PROCESSOR SUPERVISORY CIRCUITS
Check for Samples: TPS3123-xx, TPS3124-xx, TPS3125-xx, TPS3126-xx, TPS3128-xx
1
FEATURES
2
• Minimum Supply Voltage of 0.75 V
• Supply Voltage Supervision Range:
– 1.2 V, 1.5 V, 1.8 V (TPS312x)
– 3 V (TPS3125 Devices Only)
– Other Versions on Request
• Power-On Reset Generator With Fixed Delay
Time of 180 ms
• Manual Reset Input (TPS3123/5/6/8)
• Watchdog Timer Retriggers the RESET Output
at V
DD
≥ V
IT
• Supply Current of 14 μA (Typ)
• Small SOT23-5 Package
• Temperature Range of –40°C to +85°C
• Reset Output Available in Push-Pull (Active
Low and High) and Open-Drain (Active-Low)
APPLICATIONS
• Applications Using Low Voltage DSPs,
Microcontrollers, or Microprocessors
• Portable/Battery-Powered Equipment
• Wireless Communication Systems
• Programmable Controls
• Industrial Equipment
• Notebook/Desktop Computers
• Intelligent Instruments
Figure 1. Typical Low-Voltage DSP Application
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.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 1999–2011, 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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