BQ27441DRZR-G1B.A
The BQ27441DRZR-G1B.A is an electronic component from Texas Instruments. View the full BQ27441DRZR-G1B.A datasheet below including electrical characteristics, absolute maximum ratings.
Manufacturer
Texas Instruments
Category
Battery Management
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
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 |
|---|---|---|
| BQ27441 | Texas Instruments | — |
| BQ27441-G1 | Texas Instruments | — |
| BQ27441DRZR-G1 | Texas Instruments | — |
| BQ27441DRZR-G1A | Texas Instruments | 12-VFDFN Exposed Pad |
| BQ27441DRZR-G1A.A | Texas Instruments | — |
| BQ27441DRZR-G1AG4 | Texas Instruments | — |
| BQ27441DRZR-G1AG4.A | Texas Instruments | — |
| BQ27441DRZR-G1B | Texas Instruments | |
| BQ27441DRZT-G1A | Texas Instruments | — |
| BQ27441DRZT-G1A.A | Texas Instruments | — |
| BQ27441DRZT-G1B | Texas Instruments | 12-VFDFN Exposed Pad |
| BQ27441DRZT-G1B.A | Texas Instruments | — |
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