TPS389 Datasheet, PDF (1/31 Pages) Texas Instruments – Single-Channel, Adjustable Voltage Monitor in Ultra-Small Package

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TPS389
SBVS172B – JULY 2011 – REVISED APRIL 2015
TPS389x Single-Channel, Adjustable Voltage Monitor in Ultra-Small Package
1 Features
•1 Very Small USON (1.45 mm × 1.00 mm) Package
• Adjustable Threshold Down to 500 mV
• Threshold Accuracy: 1% Over Temperature
• Capacitor-Adjustable Delay Time
• Low Quiescent Current: 6 µA (Typical)
• External Enable Input
• Open-Drain (Rated at 18 V) and Push-Pull Output
Options
• Temperature Range: –40°C to 125°C
• Pin-for-Pin Compatible With MAX6895/6/7/8
2 Applications
• DSPs, Microcontrollers, and Microprocessors
• Notebook and Desktop Computers
• PDAs and Handheld Products
• Portable and Battery-Powered Products
• FPGAs and ASICs
3 Description
The TPS3895, TPS3896, TPS3897, and TPS3898
devices (TPS389x) are a family of very small
supervisory circuits that monitor voltages greater than
500 mV with a 0.25% (typical) threshold accuracy
and offer adjustable delay time using external
capacitors. The TPS389x family also has a logic
enable pin (ENABLE or ENABLE) to power on and off
the output. With the TPS3895, for example, when the
input voltage pin (SENSE) rises above the threshold,
and the ENABLE pin is high, then the output pin
(SENSE_OUT) goes high after the capacitor-
adjustable delay time. When SENSE falls below the
threshold or ENABLE is low, then SENSE_OUT goes
low. For truth tables, see Table 1 and Table 2.
For TPS389xA versions, both SENSE and ENABLE
have a capacitor-adjustable delay. The output asserts
after this capacitor-adjustable delay when both
SENSE and ENABLE inputs are good. The
TPS389xP devices have a small, 0.2-µs propagation
delay from when the enable pin asserts to when the
output pin asserts, provided SENSE is above the
threshold.
All devices operate from 1.7 V to 6.5 V and have a
typical quiescent current of 6 µA with an open-drain
output rated at 18 V. The TPS389x is available in an
ultra-small USON package and is fully specified over
the temperature range of T_J = –40°C to 125°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS389x
USON (6)
1.45 mm × 1.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Sense Threshold Voltage vs Temperature
507
V_CC = 1.7 V, V_IT+
505
V_CC = 3.3 V, V_IT+
V_CC = 6.5 V, V_IT+
503
V_CC = 1.7 V, V_IT+ − V_HYS
V_CC = 3.3 V, V_IT+ − V_HYS
501
V_CC = 6.5 V, V_IT+ − V_HYS
499
497
495
493
−40 −25 −10 5
20 35 50 65 80 95 110 125
Temperature (°C)
G004
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.