TLV809I50 Datasheet, PDF (1/16 Pages) Texas Instruments – 3-Pin Supply Voltage Supervisors

TLV809J25, TLV809L30
TLV809K33, TLV809I50
www.ti.com
SLVSA03C – JUNE 2010 – REVISED FEBRUARY 2012
3-Pin Supply Voltage Supervisors
Check for Samples: TLV809J25, TLV809L30, TLV809K33, TLV809I50
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 MAX809
• Temperature Range: –40°C to +85°C
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 TLV809 family of supervisory circuits provides circuit initialization and timing supervision, primarily for DSPs
and processor-based systems.
During power-on, RESET is asserted when the supply voltage (V_DD) becomes higher 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. No external components
are required. 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 TLV809 devices are characterized for operation over a temperature range of –40°C
to +85°C.
TLV809
DBV/DBZ Packages
GND
1
3
V_DD
RESET
2
Figure 1. TYPICAL APPLICATION
3.3-V LDO
5V
IN
3.3 V
OUT
GND
V_DD
TLV809K33
RESET
GND
V_DD
DSP/FPGA/ASIC
RESET
GND
1
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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.
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