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Details for MAX14921ECS+ by Maxim Integrated
Semiconductors - ICs > More - Integrated Circuits >
ANALOGUE FRONT END DEVICE TQFP-80
MAX14921ECS+ image

MAX14921ECS+ by Maxim Integrated

ANALOGUE FRONT END DEVICE TQFP-80
Part Information
MAX14921ECS+ image
RoHS Compliant
Description
The MAX14920/MAX14921 battery measurement analog front-end devices accurately sample cell voltages and provide level shifting for primary/secondary battery packs up to 16 cells/+65V (max). The MAX14920 monitors up to 12 cells, while the MAX14921 monitors up to 16 cells. Both devices simultaneously sample all cell voltages, allowing accurate state-of-charge and source-resistance determination. All cell voltages are level shifted to ground reference with unity gain, simplifying external ADC data conversion. The devices have a low-noise, low-offset amplifier that buffers differential voltages of up to +5V, allowing moni- toring of all common lithium-ion (Li+) cell technologies. The resulting cell voltage error is Q0.5mV. The devices’ high accuracy make them ideal for monitoring cell chemistries with very flat discharge curves, such as lithium-metal phosphate. Passive-cell balancing is supported by external FET drivers. Integrated diagnostics in the devices allow open-wire detection and undervoltage/overvoltage alarms. The devices are controlled by a daisy-chainable SPI interface. The MAX14920 is available in a 64-pin (10mm x 10mm) TQFP package with an exposed pad. The MAX14921 is available in an 80-pin (12mm x 12mm) TQFP package. Both devices are specified over the -40°C to +85°C extended temperature range.
Specifications
Battery Type:
Li-Ion
IC Interface Type:
SPI
No. of Batteries:
-
Supply Voltage Min:
6V
Supply Voltage Max:
65V
Battery IC Case Style:
TQFP
No. of Pins:
80Pins
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Product Range:
-
Automotive Qualification Standard:
-
RoHS Phthalates Compliant:
To Be Advised
MSL:
MSL 3 - 168 hours
SVHC:
No SVHC (15-Jan-2018)
IC Function:
Analogue Front End Device
IC Package Type:
TQFP
Alternate Descriptions
MAX14921ECS+,Battery Mgmt RS Components
ANALOGUE FRONT END, LI-ION, TQFP-80; Battery Type:Li-Ion; IC Interface Type:SPI; No. of Batteries:-; Supply Voltage Min:6V; Supply Voltage Max:65V; Battery IC Case Style:TQFP; No. of Pins:80Pins; Operating Temperature Min:-40°C RoHS Compliant: Yes Newark Electronics
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