INA300 (ACTIVE)

36-V Low-/High-Side, Overcurrent Protection Comparator

 

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.

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

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Parametrics Compare all products in Current Sense Amplifiers with Comparator

 
Common Mode Voltage (Max) (V)
Input Offset (+/-) (Max) (uV)
Input Offset Drift (+/-) (Typ) (uV/C)
Gain (V/V)
Gain Error (%)
CMRR (Min) (dB)
Bandwidth (kHz)
Number of Channels (#)
Response Time (Typ) (µs)
Hysteresis Input (Typ) (mV)
Supply Voltage (Max) (V)
Supply Voltage (Min) (V)
Iq (Max) (mA)
Features
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Common Mode Voltage (Min) (V)
Gain Error Drift (Max) (ppm/°C)
INA300 INA301 INA302 INA303
36    36    36    36   
650    35
50
125   
30
50
80   
30
50
80   
0.1    0.1    0.1    0.1   
  20
50
100   
20
50
100   
20
50
100   
  0.1
0.15
0.2   
0.1
0.15
0.2   
0.1
0.15
0.2   
96    100    100    100   
  550
500
450   
550
440
400   
550
500
450   
1    1    2    2   
10
50
100   
1    1    1   
2
4
8   
20
50
100   
100    100   
5.5    5.5    5.5    5.5   
2.7    2.7    2.7    2.7   
0.135    0.7    1.1    1.1   
Alert Function
Low-side Capable   
Alert Function
Low-side Capable   
Alert Function
Bi-directional
Low-side Capable   
Alert Function
Bi-directional
Low-side Capable   
Catalog    Catalog    Catalog    Catalog   
-40 to 125    -40 to 125    -40 to 125    -40 to 125   
VSSOP
WSON   
VSSOP    TSSOP    TSSOP   
10VSSOP: 15 mm2: 4.9 x 3(VSSOP)
See datasheet (WSON)   
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)    14TSSOP: 32 mm2: 6.4 x 5(TSSOP)    14TSSOP: 32 mm2: 6.4 x 5(TSSOP)   
0    0    0    0   
  10    10    10   

Other qualified versions of INA300

Version Part Number Definition
Automotive INA300-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects