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MAX14921ECS+ Analog Devices Inc. PMIC - Battery Management image
  • MAX14921ECS+ Analog Devices Inc. PMIC - Battery Management image
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Analog Devices Inc. MAX14921ECS+

Manufacturer
Analog Devices Inc.
Mfr. Part #
MAX14921ECS+
WLX Part #
A224260014767
Package
80-TQFP
Datasheet
MAX14921ECS+ Datasheet (PDF)
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MAX14921ECS+ Parameter 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 monitoring of all common lithium-ion (Li+) cell technologies. The resulting cell voltage error is ±0.5mV.

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.

Applications

  • e-Transportation Energy Packs
  • Energy Storage Packs
  • Industrial Battery Backup Systems
  • Telecom Battery Backup Systems

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After receiving your payment, we will ship the goods for you within the delivery period and send the shipping number by email

2. Shipping cost already shown on the quote, please check your email.

3.We will evaluate the shipping cost according to the price of the product you purchased and the shipping address. If you need to specify the shipping method, you can notify us by email.

4. We support DHL, FedEx, UPS, SF to ship your goods by default



5.Regarding in stock parts, orders can generally be ready to ship within 4 hours.
We ship daily at 5pm.（UTC/GMT+8）
Once the goods are shipped, estimated delivery time depends on the shipping methods you chose:
FedEx International, 5-7 business days.
DHL Express, 5-7 business days.

The following are some common countries' logistic time.



Note: 

The above table is for reference only, there may will have some delay for the uncontrollable factors.




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Some items missing from my shipment
First, check that you've received all the boxes associated with your order. Then fully empty each box you received, sometimes small parts get caught in crevices or in packing material. If you still can't find your item, please email customer service right away. Include a description of the missing quantities and pictures of the whole parcel. We'll forward them to our warehouse to check the monitor records and the packing pictures records. Steps:
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2. We'll check and verify the issues.
3. Offer solutions to customer case by case.
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Supplier level control (Qualified suppliers, provisional suppliers and blacklisted suppliers)
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assessment
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Quality testing (QC process according to international standards to guarantee product quality)
Testing process:
Primary testing
Labels and outer packaging
Secondary testing
Appearance and electrical properties
Tertiary testing
Slicing, open cap, solderability, ambient temperature, ageing, X-RAY, ultrasound

  • External Visual Inspection

  • Electrical performance testing

  • Key functional testing

  • Key functional testing

  • Slice testing

  • X-RAY Inspection

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