MAX17044

Part: MAX17043/MAX17044 — Maxim Integrated Type: Host-Side Fuel-Gauge System Description: Ultra-compact, low-cost, host-side fuel-gauge systems for lithium-ion batteries, using ModelGauge™ algorithm for continuous state-of-charge tracking without relearn cycles or external current-sense resistors.

Operating Conditions:

• Supply voltage: 2.5–4.5 V
• Operating temperature: -20°C to +70°C
• MAX17043 CELL pin voltage: -0.3 to 5 V
• MAX17044 CELL pin voltage: -0.3 to 10 V

Absolute Maximum Ratings:

• Max CTG/CELL pin voltage: +12 V
• Max other pins voltage: +6 V
• Max operating temperature: +85°C
• Max storage temperature: +125°C

Key Specs:

• Active Current: 50 μA (typ), 75 μA (max)
• Sleep-Mode Current: 0.5 μA (typ) at VDD = 2.0V, 1 μA (typ) at VDD = 2.5V to 4.5V
• MAX17043 Voltage-Measurement Error: ±12.5 mV (TA = +25°C, VIN = VDD)
• MAX17044 Voltage-Measurement Error: ±30 mV (TA = +25°C, 5.0V < VIN < 9.0V)
• CELL Pin Input Impedance: 15 MΩ
• SCL Clock Frequency: 0–400 kHz
• Bus Low Timeout: 1.75–2.5 s
• Capacitive Load for Each Bus Line: 400 pF (max)

Features:

• Host-Side or Battery-Side Fuel Gauging
• 1 Cell (MAX17043) or 2 Cell (MAX17044) operation
• Accurate Relative Capacity (RSOC) calculated from ModelGauge Algorithm
• No Sense Resistor Required
• External Alarm/Interrupt for Low-Battery Warning
• 2-Wire Interface
• Low Power Consumption

Applications:

• Smartphones, Tablets
• Health and Fitness Monitors
• Digital Still, Video, and Action Cameras
• Medical Devices
• Handheld Computers and Terminals
• Wireless Speakers

Package:

• 8-pin TDFN-EP (2mm x 3mm)
• 9-bump UCSP (0.4mm pitch)

• Host-Side or Battery-Side Fuel Gauging
• 1 Cell (MAX17043)
• 2 Cell (MAX17044)
• Precision Voltage Measurement
• ±12.5mV Accuracy to 5.00V (MAX17043)
• ±30mV Accuracy to 10.00V (MAX17044)
• Accurate Relative Capacity (RSOC) Calculated from ModelGauge Algorithm
• No Offset Accumulation on Measurement
• No Full-to-Empty Battery Relearning Necessary
• No Sense Resistor Required
• External Alarm/Interrupt for Low-Battery Warning
• 2-Wire Interface
• Low Power Consumption
• Tiny, Lead(Pb)-Free, 8-Pin, 2mm x 3mm TDFN Package or Tiny 0.4mm Pitch 9-Bump UCSP Package

• Smartphones, Tablets
• Health and Fitness Monitors
• Digital Still, Video, and Action Cameras
• Medical Devices
• Handheld Computers and Terminals
• Wireless Speakers

ModelGauge is a trademark of Maxim Integrated Products, Inc. UCSP is a trademark of Maxim Integrated Products, Inc.

Visit www.maximintegrated.com/products/patents for product patent marking information.

(2.5V ≤ V DD ≤ 4.5V, T A = -20°C to +70°C, unless otherwise noted.)

• Voltage on CELL Pin Relative to V GND ..................-0.3V to +12V

• Voltage on All Other Pins Relative to V GND ..............-0.3V to +6V

• Operating Temperature Range..............................-40°C to +85°C

• (T A = 0°C to +70°C (Note 10)).......................-55°C to +125°C

• Lead Temperature (TDFN soldering only, 10s) ...............+300°C

• Soldering Temperature (reflow) .......................................+260°C

Stresses beyond those listed under 'Absolute Maximum Ratings' may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages . Note that a '+', '#', or '-' in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.

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Data is returned beginning with the MSB of the data in MAddr. Because the address is automatically incremented after the LSB of each byte is returned, the MSB of the data at address MAddr + 1 is available to the host immediately after the acknowledgment of the data at address MAddr. If the bus master continues to read beyond address FFh, the MAX17043/MAX17044 output data values of FFh. Addresses labeled Reserved in the memory map return undefined data. The bus master terminates the read transaction at any byte boundary by issuing a no acknowledge followed by a STOP or Repeated START.