INA233 36V, Bi-Directional, High Accuracy, Low-/High-Side, I2C/PMBus Out Current/Power Monitor w/Alert | TI.com

INA233 (ACTIVE)

36V, Bi-Directional, High Accuracy, Low-/High-Side, I2C/PMBus Out Current/Power Monitor w/Alert

 

Description

The INA233 device is a current, voltage, and power monitor with an I2C-, SMBus-, and PMBus-compatible interface that is compliant with digital bus voltages from 1.8 V to 5.0 V. The device monitors and reports values for current, voltage, and power. The integrated power accumulator can be used for energy or average power calculations. Programmable calibration value, conversion times, and averaging when combined with an internal multiplier enable direct readouts of current in amperes and power in watts.

The INA233 senses current on common-mode bus voltages that can vary from 0 V to 36 V, independent of the supply voltage. The device operates from a single 2.7-V to 5.5-V supply, drawing a typical supply current of 310 µA in normal operation. The device can be placed in a low-power standby mode where the typical operating current is only 2 µA. The device is specified over the operating temperature range between –40°C and +125°C and features up to 16 programmable addresses.

Features

  • Senses Bus Voltages From 0 V to 36 V
  • High-Side or Low-Side Sensing
  • Reports Current, Voltage, and Power
  • Integrated Power Accumulator for Energy and Average Power Monitoring
  • High Accuracy:
    • 0.1% Gain Error (Max)
    • 10-µV Offset (Max)
  • Configurable Averaging Options
  • Independent Alert Limits for Current, Bus Voltage, and Power
  • 1.8-V Compliant I2C, SMBus, PMBus Interface
  • 16 Programmable Addresses
  • Operates From a 2.7-V to 5.5-V Power Supply
  • 10-Pin, DGS (VSSOP) Package

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Parametrics Compare all products in Current/voltage/power monitors

 
Common mode voltage (Max) (V)
Common mode voltage (Min) (V)
Input offset (+/-) (Max) (uV)
Input offset drift (+/-) (Typ) (uV/C)
Gain (V/V)
Gain error (%)
Gain error drift (+/-) (Max) (ppm/°C)
CMRR (Min) (dB)
Bandwidth (kHz)
Supply Voltage (Max) (V)
Supply Voltage (Min) (V)
Iq (Max) (mA)
Digital interface
Features
Rating
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
INA233 INA226 INA230
36     36     28    
0     0     0    
10     10     50    
0.02     0.02     0.1    
1     1     1    
0.1     0.1     0.5    
25     50     50    
126     126     100    
3.5     3.5     3.5    
5.5     5.5     5.5    
2.7     2.7     2.7    
0.4     0.42     0.42    
I2C
PMBus
SMBus    
I2C
SMBus    
I2C
SMBus    
Alert Function
Bi-directional
Integrated Power Accumulator
Low-side Capable    
Alert Function
Bi-directional
Low-side Capable    
Alert Function
Bi-directional
Low-side Capable    
Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125    
VSSOP | 10     VSSOP | 10     VQFN | 16    
10VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 10)     10VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 10)     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)    

Design tool

INA233 Error Analysis

0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
2.7 ≤ 
V ≤ 36
0 ≤ 
V ≤ 36
-40 ≤ 
C ≤ 125