TLV803M_13 Datasheet, PDF (1/15 Pages) Texas Instruments – 3-Pin Voltage Supervisors with Active-Low, Open-Drain Reset

TLV803M, TLV803R
TLV803S, TLV803Z
www.ti.com
SBVS157A – APRIL 2011 – REVISED JUNE 2011
3-Pin Voltage Supervisors
with Active-Low, Open-Drain Reset
Check for Samples: TLV803M, TLV803R, TLV803S, TLV803Z
FEATURES
1
•2 3-Pin SOT23 Package
• Supply Current: 9 µA (Typical)
• Precision Supply Voltage Monitor:
2.5 V, 3 V, 3.3 V, 5 V
• Power-On Reset Generator with
Fixed Delay Time of 200 ms
• Pin-for-Pin Compatible with MAX803
• Temperature Range: –40°C to +125°C
• Open-Drain, RESET Output
APPLICATIONS
• DSPs, Microcontrollers, and Microprocessors
• Wireless Communication Systems
• Portable/Battery-Powered Equipment
• Programmable Controls
• Intelligent Instruments
• Industrial Equipment
• Notebook and Desktop Computers
• Automotive Systems
DESCRIPTION
The TLV803 family of supervisory circuits provides
circuit initialization and timing supervision, primarily
for DSPs and processor-based systems.
During power-on, RESET asserts when the supply
voltage (V_DD) becomes greater than 1.1 V.
Thereafter, the supervisory circuit monitors V_DD and
keeps RESET active as long as V_DD remains below
the threshold voltage V_IT. An internal timer delays the
return of the output to the inactive state (high) to
ensure proper system reset. The delay time (t_d(typ) =
200 ms) starts after V_DD has risen above the
threshold voltage, V_IT. When the supply voltage drops
below the V_IT threshold voltage, the output becomes
active (low) again. All the devices in this family have
a fixed sense-threshold voltage (V_IT) set by an
internal voltage divider.
The product spectrum is designed for supply voltages
of 2.5 V, 3 V, 3.3 V, and 5 V. The circuits are
available in a 3-pin SOT-23 package. The TLV803
devices are characterized for operation over a
temperature range of –40°C to +125°C.
DEVICE FAMILY COMPARISON
DEVICE
FUNCTION
TLV803
Open-Drain, RESET Output
TLV809
Push-Pull, RESET Output
TLV810
Push-Pull, RESET Output
TLV803
DBZ Package
(Top View)
GND
1
3
V_DD
TYPICAL APPLICATION
3.3-V LDO
5V
IN
3.3 V
OUT
GND
V_DD
V_DD
TLV803S
RESET
GND
DSP/FPGA/ASIC
RESET
GND
RESET
2
1
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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2
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 © 2011, Texas Instruments Incorporated