BQ27411DRZT-G1C
The BQ27411DRZT-G1C is an electronic component from Texas Instruments. View the full BQ27411DRZT-G1C datasheet below including key specifications, pinout, electrical characteristics, absolute maximum ratings.
Manufacturer
Texas Instruments
Category
Battery Management
Package
12-VFDFN Exposed Pad
Lifecycle
Production (Last Updated: 2 days ago)
Key Specifications
| Parameter | Value |
|---|---|
| Battery Chemistry | Lithium Ion |
| 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 |
| Number of Cells | 1 |
| Number of Cells | 1 |
| Number of Pins | 12 |
| Operating Supply Current | 93 µA |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Output Current | 500 µA |
| Output Voltage | 1.8 V |
| Package / Case | 12-VFDFN Exposed Pad |
| REACH SVHC | No |
| RoHS | Compliant |
| Supplier Device Package | 12-SON (2.5x4) |
| Supplier Device Package | 12-SON (2.5x4) |
| Thickness | 850 µm |
| Width | 2.5 mm |
Overview
The Texas Instruments bq27411-G1 device is a battery fuel gauging solution for single-series cell LiIon battery packs. The device requires minimal configuration and uses One Time Programmable (OTP) Non-Volatile Memory (NVM) to avoid an initialization download by the system processor.
The 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).
The small, 12-pin, 2.50 mm × 4.00 mm, Small Outline No-Lead (SON) package is ideal for spaceconstrained applications.
Features
- 1 · Single-Series Cell Li-Ion Battery Fuel Gauge
- -Resides in Battery Pack
- -Low-Value External Sense Resistor (10 m Ω Typical)
- -One Time Programmable (OTP) Configuration Non-Volatile Memory (NVM)
- -Powered Directly from Battery with Integrated LDO
- -400-kHz I 2 C Serial Interface
- -Internal Temperature Sensor or Host-reported Temperature
- Battery Fuel Gauging Based on Patented Impedance Track™ Technology
- -Reports Remaining Capacity and State of Charge (SOC) with Smoothing Filter
- -Automatically Adjusts for Battery Aging, Selfdischarge, Temperature, and Rate Changes
- -Battery State of Health (Aging) Estimation
Applications
- Smartphones, Feature Phones, and Tablets
- Digital Still and Video Cameras
- Handheld Terminals
- MP3 or Multimedia Players
Pin Configuration
BQ27411DRZT-G1C Pinout
Package: 12-VFDFN Exposed Pad
| Pin Number | Pin Name | Type | Description |
|---|---|---|---|
| 1 | SDA | I/O | Serial Data (I²C) |
| 2 | SCL | I/O | 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 | TEST | I | Test Pin |
| 11 | NC | — | No Connect |
| 12 | PROG | I | Programming Pin |
| EP | EP | P | Exposed Pad (Ground) |
Notes
- Pins 4, 9, and 11 are No Connect (NC) pins.
- Pin numbering follows the top-view diagram with pins 1–6 on the left side and pins 7–12 on the right side.
- The exposed pad (EP) on the bottom of the package is connected to ground (VSS).
- SDA and SCL are open-drain I²C interface pins requiring external pull-up resistors.
- BAT connects directly to the battery positive terminal; 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)
| PARAMETER | PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| V IH(OD) (For ce | 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 (2)(3) | SCL, SDA, and TEST pins | 0.1 | μ A | ||
| I lkg | Input leakage current (2)(3) | PROG pin | 1 | μ A |
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 |
| 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 PROG | PROG (pin 12) | -0.3 | 7.8 | V |
| V IOPP | Push-pull IO pins (TEST, pin 10) | -0.3 | V DD + 0.3 | V |
| T A | Operating free-air temperature range | -40 | 85 | °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 pull-up voltage for open- drain pins (SDA, SCL, PROG) | 1.62 | 3.6 | V | ||
| V PV | PROG Programming Voltage [RA0] | T A = 15°C to 35°C. OTP Programming mode only. | 7.3 | 7.4 | 7.5 | V |
| I PV | PROG Programming Current [RA0] | T A = 15°C to 35°C. OTP Programming mode only. | 4 | 5 | mA |
Thermal Information
over operating free-air temperature range (unless otherwise noted)
| THERMAL METRIC (1) | bq27411-G1 DRZ (12 PINS) | UNIT | |
|---|---|---|---|
| R θ JA | Junction-to-ambient thermal resistance | 64.1 | °C/W |
| R θ JC(top) | 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 JC(bot) | Junction-to-case (bottom) thermal resistance | 2.4 | °C/W |
Typical Application
The bq27411-G1 device is a fuel gauging solution for single-series cell Li-Ion battery packs. The device requires minimal configuration and uses One Time Programmable (OTP) Non-Volatile Memory (NVM) to avoid an initialization download by the system processor. 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 |
|---|---|---|
| BQ27411DRZT-G1A | Texas Instruments | 12-VFDFN Exposed Pad |
| BQ27411DRZT-G1B | Texas Instruments | — |
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