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Part: TLC7733QPWREP
Category:
Power Management
-> Supervisory Circuits
Description: ti TLC7733-EP, Military Enhanced Plastic Micropower Supply Voltage Supervisors
Company: Texas Instruments, Inc.
Datasheet: Download TLC7733QPWREP datasheet File size : 548 kB
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Datasheet text preview:
TLC7701 EP, TLC7705 EP, TLC7733 EP MICROPOWER SUPPLY VOLTAGE SUPERVISORS S
GLS013A - MARCH 2003 - REVISED SEPTEMBER 2003
D Controlled Baseline D D D D D D D
- One Assembly/Test Site, One Fabrication Site Extended Temperature Performance of -40°C to 125°C Enhanced Diminishing Manufacturing Sources (DMS) Support Enhanced Product Change Notification Qualification Pedigree Power-On Reset Generator Automatic Reset Generation After Voltage Drop Precision Voltage Sensor
D Temperature-Compensated Voltage D D D D D D
Reference Programmable Delay Time by External Capacitor Supply Voltage Range . . . 2 V to 6 V Defined RESET Output from VDD 1 V Power-Down Control Support for Static RAM With Battery Backup Maximum Supply Current of 16 µA Power Saving Totem-Pole Outputs
PW PACKAGE (TOP VIEW)
Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits.
CONTROL RESIN CT GND
1 2 3 4
8 7 6 5
VDD SENSE RESET RESET
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 VDD reaches 1 V. After minimum VDD ( 2 V) is established, the circuit monitors SENSE voltage and keeps the reset outputs active as long as SENSE voltage (VI(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, td, is determined by an external capacitor: td = 2.1 × 104 × CT Where CT is in farads td is in seconds 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, td, has expired. In addition to the power-on-reset and undervoltage-supervisor function, the TLC77xx adds power-down control support for static RAM. When CONTROL is tied to GND, RESET will act as active high. The voltage monitor contains additional logic intended for control of static memories with battery backup during power failure. By driving the chip select (CS) of the memory circuit with the RESET output of the TLC77xx and with the CONTROL driven by the memory bank select signal (CSH1) of the microprocessor (see Figure 10), the memory circuit is automatically disabled during a power loss. (In this application the TLC77xx power has to be supplied by the battery.)
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 Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright 2003, Texas Instruments Incorporated
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
1
TLC7701 EP, TLC7705 EP, TLC7733 EP MICROPOWER SUPPLY VOLTAGE SUPERVISORS S
GLS013A - MARCH 2003 - REVISED SEPTEMBER 2003
ORDERING INFORMATION
TA PACKAGE TSSOP - PW -40°C to 125°C 125 C TSSOP - PW TSSOP - PW Tape and reel Tape and reel Tape and reel ORDERABLE PART NUMBER TLC7701QPWREP TLC7705QPWREP TLC7733QPWREP TOP-SIDE MARKING 7701QE 7705QE
7733QE Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at www.ti.com/sc/package. The PW package is only available left-end taped and reeled (indicated by the R suffix on the device type; e.g., TLC7701QPWREP). FUNCTION TABLE CONTROL L L L L H H H RESIN L L H H L L H VI(SENSE)>VIT+ False True False True False True False RESET H H H L§ H H H RESET L L L H§ L L L H§ 1 RESIN CT 2 3 SENSE 7 S
logic symbol¶
COMP S×
CX 1 2 1 3 1
Z2 Z3 5 6 RESET RESET
H H True H § RESET and RESET states shown are valid for t > td.
CONTROL
¶ This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.
functional block diagram
8 CONTROL 1 50 µA 5 RESIN 2 6 VDD RESET
RESET
SENSE
7
R1
R2
1 M 1.1 V 3 CT
4
GND
Outputs are totem-pole configuration. External pullup or pulldown resistors are not required. Nominal values: R1 (Typ) TLC7701 TLC7705 TLC7733 0 910 k 750 k R2 (Typ)
290 k 450 k
2
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
TLC7701 EP, TLC7705 EP, TLC7733 EP MICROPOWER SUPPLY VOLTAGE SUPERVISORS S
GLS013A - MARCH 2003 - REVISED SEPTEMBER 2003
timing diagram
VDD and VI(SENSE) VIT+ Threshold Voltages VIT- Vres t RESET Output Output Undefined VIT+
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Supply voltage, VDD (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V Input voltage range, CONTROL, RESIN, SENSE (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 V to 7 V Maximum low output current, IOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA Maximum high output current, IOH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -10 mA Input clamp current, IIK (VI VDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 10 mA Output clamp current, IOK (VO VDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 10 mA Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating free-air temperature range, TA: TL77xxQ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to 125°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to 150°C
Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: All voltage values are with respect to GND. DISSIPATION RATING TABLE PACKAGE PW TA 25°C POWER RATING 525 mW DERATING FACTOR ABOVE TA = 25°C 4.2 mW/°C TA = 85°C POWER RATING 273 mW TA = 125°C POWER RATING 105 mW
recommended operating conditions at specified temperature range
MIN Supply voltage, VDD Input voltage, VI High-level input voltage at RESIN and CONTROL, VIH Low-level input voltage at RESIN and CONTROL, VIL High-level output current, IOH Low-level output current, IOL VDD 2.7 V 2 0 0.7×VDD 0.2×VDD -2 2 100 - 40 125 MAX 6 VDD UNIT V V V V mA mA ns/V °C
Input transition rise and fall rate at RESIN and CONTROL, t/V Operating free-air temperature range, TA To ensure a low supply current, VIL should be kept VDD - 0.3 V.
POST OFFICE BOX 655303
ÎÎ
· DALLAS, TEXAS 75265
td
td
t
3
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