LM3822MMX-1.0

Series: -
Sensing Method: High-Side
Current - Output: -
Mounting Type: Surface Mount
Accuracy: ±2%
Operating Temperature: -40°C ~ 85°C
Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package: 8-MSOP
Packaging: Tape & Reel (TR)
Manufacturer: National Semiconductor
Function: Current Gauge
Voltage - Input: 2 V ~ 5.5 V


Pinout




Description

The LM3822MMX-1.0 is designed as one kind of precision current gauge IC that can be used in (1)battery charge/discharge gauge; (2)motion control diagnostics; (3)power supply load monitoring and management; (4)resettable smart fuse. This device is factory-set in two different current options and is used for high-side sensing.

Features of the LM3822MMX-1.0 are:(1)No external sense element required; (2)PWM output indicates the current magnitude and direction; (3)PWM output is easily interfaced with microprocessors and controllers; (4)Precision current-sense technique; (5)Low temperature sensitivity; (6)Internal filtering rejects false trips; (7)Internal Power-On-Reset (POR); (8)DC Offset is less than 1 mA for 1A part. And the key specifications of this device can be concluded into these points:(1)Ultra low insertion loss (typically 0.003W); (2)2V to 5.5V supply range; (3)±2% accuracy at room temperature for the 1A device (includes accuracy of the internal sense element); (4)Low quiescent current in shutdown mode (typically 1.8 A); (5)50 msec sampling interval; (6)In MSOP-8 Package.

The absolute maximum ratings of the LM3822MMX-1.0 can be summarized as:(1)Absolute Maximum Supply Voltage: 5.5 V;(2)ESD Susceptibility: 1.5 kV;(3)Sense Current (peak, for 200 msec): 10 A;(4)Sink Current for PWM pin: 1 mA;(5)Maximum Junction Temperature: 150°C;(6)Storage Temperature: -65°C to +150°C;(7)Lead Temperature (Soldering, 10 sec): 260°C;(8)Input Voltage: 2.0 V to 5.25 V;(9)Sense Current (continuous): 5 A;(10)Junction Temperature Range: -40°C to +85°C. If you want to know more information about it, please download the datasheet in www.seekic.com or www.chinaicmart.com .