TLC7703IDR Datasheet, PDF (1/36 Pages) Texas Instruments – Micropower Supply Voltage Supervisors

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TLC7701, TLC7725, TLC7703
TLC7733, TLC7705
SLVS087M – DECEMBER 1994 – REVISED MARCH 2012
Micropower Supply Voltage Supervisors
Check for Samples: TLC7701, TLC7725, TLC7703 , TLC7733, TLC7705
FEATURES
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• Power-On Reset Generator
• Automatic Reset Generation After Voltage
Drop
• Precision Voltage Sensor
• Temperature-Compensated Voltage Reference
• Programmable Delay Time by External
Capacitor
• Supply Voltage Range . . . 2 V to 6 V
• Defined RESET Output from V_DD ≥ 1 V
• Power-Down Control Support for Static RAM
With Battery Backup
• Maximum Supply Current of 16 µA
• Power Saving Totem-Pole Outputs
• Temperature Range . . . Up to –55°C to 125°C
DRB PACKAGE
APPLICATIONS
• Medical Imaging
DESCRIPTION
The TLC77xx family of micropower supply voltage
supervisors provide reset control, primarily in
microcomputer and microprocessor systems.
During power-on, RESET is asserted when V_DD
reaches 1 V. After minimum V_DD (≥2 V) is
established, the circuit monitors SENSE voltage and
keeps the reset outputs active as long as SENSE
voltage (V_I(SENSE)) remains below the threshold
voltage. An internal timer delays return of the output
to the inactive state to ensure proper system reset.
The delay time, t_d, is determined by an external
capacitor:
t_d = 2.1 × 10⁴ × C_T
Where
C_T is in farads
t_d is in seconds
SPACER
Except for the TLC7701, which can be customized with two external resistors, each supervisor has a fixed sense
threshold voltage set by an internal voltage divider. When SENSE voltage drops below the threshold voltage, the
outputs become active and stay in that state until SENSE voltage returns above threshold voltage and the delay
time, t_d, has expired.
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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 © 1994–2012, Texas Instruments Incorporated