BQ27441DRZR-G1A
The BQ27441DRZR-G1A is an electronic component from Texas Instruments. View the full BQ27441DRZR-G1A datasheet below including key specifications, pinout, electrical characteristics, absolute maximum ratings.
Manufacturer
Texas Instruments
Category
Integrated Circuits (ICs)
Package
12-VFDFN Exposed Pad
Lifecycle
Active
Key Specifications
| Parameter | Value |
|---|---|
| Ambient Temperature Range High | 85 °C |
| Battery Chemistry | Lithium Ion |
| Case/Package | QFN |
| Contact Plating | Gold |
| Function | Battery Monitor |
| Height | 0 m |
| Interface | I2C |
| Interface | I2C |
| Lead Free | Lead Free |
| Length | 4 mm |
| Lifecycle Status | Production (Last Updated: 2 days ago) |
| Manufacturer Lifecycle Status | ACTIVE (Last Updated: 2 days ago) |
| Max Operating Temperature | 85 °C |
| Max Supply Voltage | 4.5 V |
| Min Operating Temperature | -40 °C |
| Min Supply Voltage | 2.45 V |
| Mount | Surface Mount |
| Mounting Type | Surface Mount |
| Nominal Supply Current | 93 µA |
| Number of Cells | 1 |
| Number of Cells | 1 |
| Number of Outputs | 1 |
| Number of Pins | 12 |
| Operating Supply Voltage | 4.5 V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Output Current | 500 µA |
| Output Voltage | 1.8 V |
| Package / Case | 12-VFDFN Exposed Pad |
| Packaging | Tape & Reel (TR) |
| RoHS | Compliant |
| Schedule B | 8542390000, 8542390000|8542390000|8542390000|8542390000|8542390000 |
| Supplier Device Package | 12-SON (2.5x4) |
| Thickness | 850 µm |
| Width | 2.5 mm |
Overview
The Texas Instruments bq27441-G1 fuel gauge is a microcontroller peripheral that provides system-side fuel gauging for single-cell Li-Ion batteries. The device requires minimal user configuration and system microcontroller firmware development.
The bq27441-G1 battery fuel gauge uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), and battery voltage (mV).
Battery fuel gauging with the bq27441-G1 fuel gauge requires connections only to PACK+ (P+) and PACK(P-) for a removable battery pack or embedded battery circuit. The tiny, 12-pin, 2.50 mm × 4.00 mm, small outline no-lead (SON) package is ideal for space-constrained applications.
Features
- 1 · Single Series Cell Li-Ion Battery Fuel Gauge
- -Resides on System Board
- -Supports Embedded or Removable Batteries
- -Powered Directly from Battery with Integrated LDO
- -Supports a Low-Value External Sense Resistor (10 m Ω )
- Battery Fuel Gauging Based on Patented Impedance Track™ Technology
- -Reports Remaining Capacity and State-ofCharge (SOC) with Smoothing Filter
- -Automatically Adjusts for Battery Aging, Selfdischarge, Temperature, and Rate Changes
- -Battery State-of-Health (Aging) Estimation
- Microcontroller Peripheral Supports:
- -400-kHz I 2 C Serial Interface
- -Configurable SOC Interrupt or Battery Low Digital Output Warning
- -Internal Temperature Sensor or Host-Reported Temperature
Applications
- Smartphones, Feature Phones, and Tablets
- Digital Still and Video Cameras
- Handheld Terminals
- MP3 or Multimedia Players
Pin Configuration
BQ27441DRZR-G1A Pinout
Package: 12-VFDFN Exposed Pad
| Pin Number | Pin Name | Type | Description |
|---|---|---|---|
| 1 | SDA | I/O | Serial Data (I²C) |
| 2 | SCL | I | Serial Clock (I²C) |
| 3 | VSS | P | Ground |
| 4 | NC | — | No Connect |
| 5 | VDD | P | Supply Voltage |
| 6 | BAT | P | Battery Positive Terminal |
| 7 | SRN | P | Sense Resistor Negative |
| 8 | SRP | P | Sense Resistor Positive |
| 9 | NC | — | No Connect |
| 10 | BIN | O | Battery Insert Detect |
| 11 | NC | — | No Connect |
| 12 | GPOUT | O | General Purpose Output |
| EP | EP | P | Exposed Pad (Ground) |
Notes
- NC pins (4, 9, 11) are no-connect; do not use.
- EP (exposed pad) is internally connected to ground and should be soldered to ground plane for thermal management.
- SDA and SCL are I²C interface pins; typical pull-up resistors required.
- SRN and SRP connect across the sense resistor for current measurement.
Electrical Characteristics
TA = -40°C to 85°C, typical values at TA = 30°C and VREGIN = 3.6 V (unless otherwise noted)(Force Note1)
(1)
| PARAMETER | PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| V IH(OD) | Input voltage, high (2) | External pullup resistor to V PU | V PU × 0.7 | V | ||
| V IH(PP) | Input voltage, high (3) | 1.4 | V | |||
| V IL | Input voltage, low (2) (3) | 0.6 | V | |||
| V OL | Output voltage, low (2) | 0.6 | V | |||
| I OH | Output source current, high (2) | 0.5 | mA | |||
| I OL(OD) | Output sink current, low (2) | -3 | mA | |||
| C IN (1) | Input capacitance (2)(3) | 5 | pF | |||
| I lkg | Input leakage current (SCL, SDA, BIN) | 0.1 | μ A | |||
| I lkg | Input leakage current (GPOUT) | 1 |
Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| V BAT | BAT pin input voltage range | -0.3 | 6 | V |
| V SR | SRP and SRN pins input voltage range | -0.3 | V BAT + 0.3 | V |
| V SR | Differential voltage across SRP and SRN. ABS(SRP - SRN) | 2 | V | |
| V DD | V DD pin supply voltage range (LDO output) | -0.3 | 2 | V |
| V IOD | Open-drain IO pins (SDA, SCL) | -0.3 | 6 | V |
| V IOPP | Push-pull IO pins (BIN) | -0.3 | V DD + 0.3 | V |
| T A | Operating free-air temperature range | -40 | 85 | °C |
| Storage temperature, T stg | Storage temperature, T stg | -65 | 150 | °C |
Recommended Operating Conditions
TA = 30°C and VREGIN = VBAT = 3.6 V (unless otherwise noted)
| MIN | TYP | MAX | UNIT | |||
|---|---|---|---|---|---|---|
| C BAT (1) | External input capacitor for internal LDO between BAT and V SS | Nominal capacitor values specified. Recommend a 5% ceramic X5R-type capacitor located close to the device. | 0.1 | μ F | ||
| C LDO18 (1) | External output capacitor for internal LDO between V DD and V SS | Nominal capacitor values specified. Recommend a 5% ceramic X5R-type capacitor located close to the device. | 0.47 | μ F | ||
| V PU (1) | External pullup voltage for open-drain pins (SDA, SCL, GPOUT) | 1.62 | 3.6 | V |
Thermal Information
| THERMAL METRIC | THERMAL METRIC | DRZ (12 PINS) | UNIT |
|---|---|---|---|
| R θ JA | Junction-to-ambient thermal resistance | 64.1 | °C/W |
| R θ JCtop | Junction-to-case (top) thermal resistance | 59.8 | °C/W |
| R θ JB | Junction-to-board thermal resistance | 52.7 | °C/W |
| ψ JT | Junction-to-top characterization parameter | 0.3 | °C/W |
| ψ JB | Junction-to-board characterization parameter | 28.3 | °C/W |
| R θ JCbot | Junction-to-case (bottom) thermal resistance | 2.4 | °C/W |
Typical Application
The bq27441-G1 fuel gauge is a microcontroller peripheral that provides system-side fuel gauging for single-cell Li-Ion batteries. The device requires minimal configuration and uses One Time Programmable (OTP) NonVolatile Memory (NVM). Battery fuel gauging with the fuel gauge requires connections only to PACK+ and PACK- for a removable battery pack or embedded battery circuit. To allow for optimal performance in the end application, special considerations must be taken to ensure minimization of measurement error through proper printed circuit board (PCB) board layout. Such requirements are detailed in Design Requirements .
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| BQ27441DRZR-G1B | Texas Instruments |
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