TLV803_17 Datasheet, PDF (1/22 Pages) Texas Instruments – 3-Pin Voltage Supervisors with Active-Low, Open-Drain Reset

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TLV803, TLV853, TLV863
SBVS157C – APRIL 2011 – REVISED SEPTEMBER 2015
TLV8x3 3-Pin Voltage Supervisors with Active-Low, Open-Drain Reset
1 Features
•1 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
2 Applications
• DSPs, Microcontrollers, and Microprocessors
• Portable and Battery-Powered Equipment
• Set-Top Boxes
• Servers
• Appliances
• Programmable Controls
• Intelligent Instruments
• Industrial Equipment
• Automotive Systems
3 Description
The TLV8x3 family of supervisory circuits provides
circuit initialization and timing supervision, primarily
for DSPs and processor-based systems.
The TLV803, TLV853, and TLV863 are functionally
equivalent. The TLV853 and TLV863 provide an
alternate pinout of the TLV803.
During power on, RESET asserts when the supply
voltage (V_DD) exceeds 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 exceeds the threshold voltage, V_IT. When
the supply voltage drops below the V_IT threshold
voltage, the output is 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. These devices 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 Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TLV8x3
SOT-23 (3)
2.92 mm × 1.30 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
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
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.