INA300-Q1 Datasheet, PDF (1/5 Pages) Texas Instruments – INA300-Q1 Automotive-Grade, High- or Low-Side, Current-Sense Comparator

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INA300-Q1
SBOS764 – DECEMBER 2015
INA300-Q1 Automotive-Grade, High- or Low-Side, Current-Sense Comparator
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to
+125°C Ambient Operating Temperature
– Device HBM ESD Classification Level 2
– Device CDM ESD Classification Level C6
• Wide Common-Mode Range: 0 V to 36 V
• Selectable Response Times:
– 10 µs, 50 µs, 100 µs
• Programmable Threshold:
– Adjustable Using a Single Resistor
– Programmable from 0 mV to 250 mV
• Accuracy:
– Offset Voltage: ±500 μV (Max)
– Offset Voltage Drift: 0.5 μV/°C (Max)
• Selectable Hysteresis:
– 2 mV, 4 mV, 8 mV
• Active Quiescent Current: 135 μA (Max)
• Open-Drain Output with Latch Mode Available
2 Applications
• Body Control Module
• Motor Control
• Valve Control
• Central Control Module
3 Description
The INA300-Q1 is a high common-mode, current-
sensing comparator that is configured to detect
overcurrent conditions through measuring the voltage
developed across a current sensing or shunt resistor.
The device can measure this differential voltage
signal on common-mode voltages that can vary from
0 V up to 36 V, independent of the supply voltage.
The device features an adjustable threshold range
that is set using a single external limit-setting resistor.
A selectable hysteresis feature enables adjustable
operation of the comparator to accommodate the
wide input signal range of 0 mV to 250 mV.
An open-drain alert output on the device can be
configured to operate in either a transparent mode
where the output status follows the input state or in a
latched mode where the alert output is cleared when
the latch is cleared. The device response time setting
is selectable, enabling overcurrent alerts to be issued
in as quickly as 10 µs.
This device operates from a single 2.7-V to 5.5-V
supply, drawing a maximum supply current of 135 µA.
The device is specified over the extended operating
temperature range (–40°C to +125°C), and is
available in a VSSOP-10 package.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
INA300-Q1
VSSOP (10)
3.00 mm × 3.00 mm
(1) For all available packages, see the package option addendum
at the end of the data sheet.
CBYPASS
0.1 µF
Typical Application
2.7 V to 5.5 V
Power Supply
(0 V to 36 V)
VS
IN+
+
CMP
IN
±
Load
HYS
GND
INA300-Q1
ENABLE
LATCH
ALERT
LIMIT
DELAY
RPull-up
10 k
RLIMIT
Processor
GPIO
GPIO
GPIO
DAC
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. PRODUCT PREVIEW Information. Product in design phase of
development. Subject to change or discontinuance without notice.