The MAX471/MAX472 are complete, bidirectional, highside current-sense amplifiers for portable PCs, telephones, and other systems where battery/DC power-line monitoring is critical. High-side power-line monitoring is especially useful in battery-powered systems, since it does not interfere with the ground paths of the battery chargers or monitors often found in “smart” batteries.
The MAX471 has an internal 35mΩ current-sense resistor and measures battery currents up to ±3A. For applications requiring higher current or increased flexibility, the MAX472 functions with external sense and gain-setting resistors. Both devices have a current output that can be converted to a ground-referred voltage with a single resistor, allowing a wide range of battery voltages and currents.
An open-collector SIGN output indicates current-flow direction, so the user can monitor whether a battery is being charged or discharged. Both devices operate from 3V to 36V, draw less than 100µA over temperature, and include a 18µA max shutdown mode.
Complete High-Side Current Sensing
Precision Internal Sense Resistor (MAX471)
2% Accuracy Over Temperature
Monitors Both Charge and Discharge
3A Sense Capability with Internal Sense Resistor (MAX471)
Higher Current-Sense Capability with External Sense Resistor (MAX472)
Use left/right arrows to navigate the slideshow or swipe left/right if using a mobile device
Choosing a selection results in a full page refresh.
Press the space key then arrow keys to make a selection.
Shopping Cart
Logging you in
{"id":1662968725576,"title":"GY-471 MAX471 3A Range Current Sensor Module","handle":"max471-3a-range-current-sensor-module","description":"\u003cp\u003eThe MAX471\/MAX472 are complete, bidirectional, highside current-sense amplifiers for portable PCs, telephones, and other systems where battery\/DC power-line monitoring is critical. High-side power-line monitoring is especially useful in battery-powered systems, since it does not interfere with the ground paths of the battery chargers or monitors often found in “smart” batteries.\u003c\/p\u003e\n\u003cp\u003eThe MAX471 has an internal 35mΩ current-sense resistor and measures battery currents up to ±3A. For applications requiring higher current or increased flexibility, the MAX472 functions with external sense and gain-setting resistors. Both devices have a current output that can be converted to a ground-referred voltage with a single resistor, allowing a wide range of battery voltages and currents.\u003c\/p\u003e\n\u003cp\u003eAn open-collector SIGN output indicates current-flow direction, so the user can monitor whether a battery is being charged or discharged. Both devices operate from 3V to 36V, draw less than 100µA over temperature, and include a 18µA max shutdown mode.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComplete High-Side Current Sensing\u003c\/li\u003e\n\u003cli\u003ePrecision Internal Sense Resistor (MAX471)\u003c\/li\u003e\n\u003cli\u003e2% Accuracy Over Temperature\u003c\/li\u003e\n\u003cli\u003eMonitors Both Charge and Discharge\u003c\/li\u003e\n\u003cli\u003e3A Sense Capability with Internal Sense Resistor (MAX471)\u003c\/li\u003e\n\u003cli\u003eHigher Current-Sense Capability with External Sense Resistor (MAX472)\u003c\/li\u003e\n\u003cli\u003e100µA Max Supply Current\u003c\/li\u003e\n\u003cli\u003e18µA Max Shutdown Mode\u003c\/li\u003e\n\u003cli\u003e3V to 36V Supply Operation\u003c\/li\u003e\n\u003cli\u003e8-Pin DIP\/SO Packages\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/Max-471-Volt-Current-Power-Pinouts_480x480.png?v=1589262056\" alt=\"ThinkRobotics | MAX471\" style=\"margin-right: 50px; margin-left: 50px; float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/1108_480x480.gif?v=1592395576\" alt=\"\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003c\/div\u003e\n\u003ch5 style=\"text-align: left;\"\u003eResources\u003c\/h5\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/DATASHEET\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC1031\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDatasheets\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/SAMPLE_CODE\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC1031\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eSample Code\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003ch5\u003eTutorials\u003c\/h5\u003e\n\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/Pc2-r29LvW4\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e \u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/EdnB2O9iBtc\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\n\u003cdiv\u003e\u003c\/div\u003e","published_at":"2022-12-06T11:22:39+05:30","created_at":"2019-03-11T11:01:01+05:30","vendor":"ThinkRobotics","type":"Sensor","tags":["3A","3A current sensor","Current","Current Sensor","ELC1","GY-471","MAX471","PWR-SNR","Range Current Sensor"],"price":28999,"price_min":28999,"price_max":28999,"available":true,"price_varies":false,"compare_at_price":45500,"compare_at_price_min":45500,"compare_at_price_max":50000,"compare_at_price_varies":true,"variants":[{"id":27847017365576,"title":"Without Soldered Pin","option1":"Without Soldered Pin","option2":null,"option3":null,"sku":"ELC1031","requires_shipping":true,"taxable":true,"featured_image":{"id":4809506586696,"product_id":1662968725576,"position":1,"created_at":"2019-03-11T11:01:05+05:30","updated_at":"2019-12-31T17:38:42+05:30","alt":"MAX471 3A Range Current Sensor Module - ThinkRobotics.in","width":500,"height":500,"src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/51I02AZ9_yL.jpg?v=1577794122","variant_ids":[27847017365576]},"available":true,"name":"GY-471 MAX471 3A Range Current Sensor Module - Without Soldered Pin","public_title":"Without Soldered Pin","options":["Without Soldered Pin"],"price":28999,"weight":10,"compare_at_price":45500,"inventory_management":"shopify","barcode":"27847017365576","featured_media":{"alt":"MAX471 3A Range Current Sensor Module - ThinkRobotics.in","id":886012936264,"position":1,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/51I02AZ9_yL.jpg?v=1577794122"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":16326851461192,"title":"With Soldered Pin","option1":"With Soldered Pin","option2":null,"option3":null,"sku":"ELC1031S","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"GY-471 MAX471 3A Range Current Sensor Module - With Soldered Pin","public_title":"With Soldered Pin","options":["With Soldered Pin"],"price":28999,"weight":10,"compare_at_price":50000,"inventory_management":"shopify","barcode":"16326851461192","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/thinkrobotics.com\/cdn\/shop\/products\/51I02AZ9_yL.jpg?v=1577794122","\/\/thinkrobotics.com\/cdn\/shop\/products\/bf3af2df-49c4-4b7c-b255-9f0bc26e6ade.JPG?v=1577794122"],"featured_image":"\/\/thinkrobotics.com\/cdn\/shop\/products\/51I02AZ9_yL.jpg?v=1577794122","options":["Soldered"],"media":[{"alt":"MAX471 3A Range Current Sensor Module - ThinkRobotics.in","id":886012936264,"position":1,"preview_image":{"aspect_ratio":1.0,"height":500,"width":500,"src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/51I02AZ9_yL.jpg?v=1577794122"},"aspect_ratio":1.0,"height":500,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/51I02AZ9_yL.jpg?v=1577794122","width":500},{"alt":"MAX471 3A Range Current Sensor Module - ThinkRobotics.in","id":886012969032,"position":2,"preview_image":{"aspect_ratio":1.0,"height":600,"width":600,"src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/bf3af2df-49c4-4b7c-b255-9f0bc26e6ade.JPG?v=1577794122"},"aspect_ratio":1.0,"height":600,"media_type":"image","src":"\/\/thinkrobotics.com\/cdn\/shop\/products\/bf3af2df-49c4-4b7c-b255-9f0bc26e6ade.JPG?v=1577794122","width":600}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eThe MAX471\/MAX472 are complete, bidirectional, highside current-sense amplifiers for portable PCs, telephones, and other systems where battery\/DC power-line monitoring is critical. High-side power-line monitoring is especially useful in battery-powered systems, since it does not interfere with the ground paths of the battery chargers or monitors often found in “smart” batteries.\u003c\/p\u003e\n\u003cp\u003eThe MAX471 has an internal 35mΩ current-sense resistor and measures battery currents up to ±3A. For applications requiring higher current or increased flexibility, the MAX472 functions with external sense and gain-setting resistors. Both devices have a current output that can be converted to a ground-referred voltage with a single resistor, allowing a wide range of battery voltages and currents.\u003c\/p\u003e\n\u003cp\u003eAn open-collector SIGN output indicates current-flow direction, so the user can monitor whether a battery is being charged or discharged. Both devices operate from 3V to 36V, draw less than 100µA over temperature, and include a 18µA max shutdown mode.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eComplete High-Side Current Sensing\u003c\/li\u003e\n\u003cli\u003ePrecision Internal Sense Resistor (MAX471)\u003c\/li\u003e\n\u003cli\u003e2% Accuracy Over Temperature\u003c\/li\u003e\n\u003cli\u003eMonitors Both Charge and Discharge\u003c\/li\u003e\n\u003cli\u003e3A Sense Capability with Internal Sense Resistor (MAX471)\u003c\/li\u003e\n\u003cli\u003eHigher Current-Sense Capability with External Sense Resistor (MAX472)\u003c\/li\u003e\n\u003cli\u003e100µA Max Supply Current\u003c\/li\u003e\n\u003cli\u003e18µA Max Shutdown Mode\u003c\/li\u003e\n\u003cli\u003e3V to 36V Supply Operation\u003c\/li\u003e\n\u003cli\u003e8-Pin DIP\/SO Packages\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/Max-471-Volt-Current-Power-Pinouts_480x480.png?v=1589262056\" alt=\"ThinkRobotics | MAX471\" style=\"margin-right: 50px; margin-left: 50px; float: none;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0014\/4313\/5560\/files\/1108_480x480.gif?v=1592395576\" alt=\"\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003c\/div\u003e\n\u003ch5 style=\"text-align: left;\"\u003eResources\u003c\/h5\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/DATASHEET\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC1031\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eDatasheets\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/github.com\/thinkrobotics\/SAMPLE_CODE\/tree\/master\/ELECTRONIC_COMPONENTS\/ELC1031\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eSample Code\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003ch5\u003eTutorials\u003c\/h5\u003e\n\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/Pc2-r29LvW4\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e \u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/EdnB2O9iBtc\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\n\u003cdiv\u003e\u003c\/div\u003e"}
Despite showing available on the website and accepting my order, they called to tell me that the order was not available.
I had to then concede with another lower rated battery.
The issue doesn't end here.
I was supposed to get a refund for the difference in pricing, but despite reminders and calls (which were not answered), I didn't get any refund until I almost filed a police complaint against them.
