36V current sense comparator
Product details
Parameters
Package | Pins | Size
Features
- Wide Common-Mode Range: 0 V to 36 V
- Selectable Response Times:
- 10 µs, 50 µs, 100 µs
- Programmable Threshold:
- Adjust Using 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)
- Selectable Disable Mode
- Disabled Quiescent Current: 3.5 µA (Max)
- Disabled Input Bias Current: 500 nA (Max)
- Open-Drain Output with Latch Mode Available
Description
Designed for overcurrent protection applications, the INA300 is a current-sensing comparator that detects overcurrent by measuring the voltage developed across a shunt resistor, and comparing that voltage to the threshold voltage input level. The device measures 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, which enables overcurrent alerts to be issued in as fast 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 of –40°C to +125°C, and is available in WSON-10 and VSSOP-10 packages.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The INA300 is a high common-mode, precision, bidirectional, current-sensing comparator that can be configured to detect over current conditions through the voltage developed across a shunt resistor. Operating from a single power supply from 2.7 V to 5.5 V, the INA300 can be configured to (...)
Features
- Jumper selectable Enable and disable
- Jumper selectable Latch mode and transparent mode
- Jumper selectable Delay (10 μs, 50 μs, and 100 μs)
- Jumper selectable Hysteresis (2 mV, 5 mV, and 10 mV)
- Threshold set by a single resistor or an external voltage source
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Additionally, an external protection circuit is implemented to provide surge and fast-transient protection and demonstrate the different immunity levels to (...)
Design files
-
download TIDA-00302 BOM.pdf (52KB)
Design files
-
download TIDA-00328 BOM.pdf (79KB) -
download TIDA-00328 Altium.zip (19554KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
VSSOP (DGS) | 10 | View options |
WSON (DSQ) | 10 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.