INA203-Q1_16 Datasheet, PDF (1/29 Pages) Texas Instruments – Low- or High-Side, High-Speed, Voltage Output Current Shunt Monitor

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INA203-Q1
SBOS539A – DECEMBER 2010 – REVISED APRIL 2016
INA203-Q1 Automotive Grade, –16 V to +80 V, Low- or High-Side, High-Speed, Voltage
Output Current Shunt Monitor With Dual Comparators and Reference
1 Features
•1 Qualified for Automotive Applications
• Current Sense Amplifier
– Common-Mode Range: –16 V to +80 V
– Accuracy: 3.5% (Maximum) Over Temperature
– Bandwidth: 500 kHz
– Gain: 20 V/V
• Integrated Dual Comparators:
– Comparator 1 With Latch
– Comparator 2 With Optional Delay
• Quiescent Current: 1.8 mA
• Latch-Up Performance Meets 100 mA Per AEC-
Q100, Level I
• Packages: TSSOP-14
2 Applications
• Electric Power Steering (EPS) Systems
• Body Control Modules
• Brake Systems
• Electronic Stability Control (ESC) Systems
3 Description
The INA203-Q1 is a unidirectional current-shunt
monitor (also called a current sense amplifier) with
voltage output, dual comparators, and voltage
reference. The INA203-Q1 can sense drops across
shunts at common-mode voltages from –16 V to +80
V. The INA203-Q1 is available with 20-V/V gain with
up to 500-kHz bandwidth.
The INA203-Q1 incorporates two open-drain
comparators with internal 0.6-V references and also
provides a 1.2-V reference output. The comparator
references can be overridden by external inputs.
Comparator 1 includes a latching capability, and
Comparator 2 has a user-programmable delay.
The INA203-Q1 operates from a single 2.7 V to 18 V
supply. It is specified over the extended operating
temperature range of –40°C to +125°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
INA203-Q1
TSSOP (14)
5.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Load Supply
±16V to +80V
Basic Connections Schematic
R_SHUNT
3m
Load
5V Supply
Current Shunt
Monitor Output
C _BYPASS
0.01 …F
V_S
OUT
CMP1 IN-/0.6 REF
CMP1 IN+
CMP2 IN+
CMP2 IN-/0.6 REF
GND
INA203-Q1
x20
1.2V REF
V_IN+
V_IN-
1.2V REF OUT
CMP1 OUT
CMP2 OUT
CMP2 DELAY
CMP1RESET
Transparent/Reset
R _PULL-UP
4.7 kŸ
R _PULL-UP
4.7 kŸ
Optional Delay
Capacitor
0.2 …F
Latch
Copyright © 2016, Texas Instruments Incorporated
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.