BQ35100PW
The BQ35100PW is an electronic component from Texas Instruments. View the full BQ35100PW datasheet below including key specifications, pinout, absolute maximum ratings.
Manufacturer
Texas Instruments
Category
Integrated Circuits (ICs)
Package
14-TSSOP (0.173", 4.40mm Width)
Lifecycle
Active
Key Specifications
| Parameter | Value |
|---|---|
| Battery Chemistry | Multi-Chemistry |
| Function | Battery Monitor |
| Interface | I2C |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Package / Case | 14-TSSOP (0.173", 4.40mm Width) |
| Packaging | Tube |
| Standard Pack Qty | 90 |
| Supplier Device Package | 14-TSSOP |
Overview
In a SHA-1 one-way hash function, there is no known mathematical method of computing the input given, only the output. The specification of SHA-1, as defined by FIPS 180-4, states that the input consists of 512-bit blocks with a total input length less than 2 64 bits. Inputs that do not conform to integer multiples of 512-bit blocks are padded before any block is input to the hash function. The SHA-1 algorithm outputs the 160-bit digest.
The device generates a SHA-1 input block of 288 bits (total input = 160-bit message + 128-bit key). To complete the 512-bit block size requirement of the SHA-1 function, the device pads the key and message with a 1, followed by 159 0s, followed by the 64 bit value for 288 (000...00100100000), which conforms to the pad requirements specified by FIPS 180-4.
Applications
Figure 12 is a simplified diagram of the main features of the BQ35100 device. Specific implementations detailing the main configuration options are shown later in this section.
Copyright © 2017, Texas Instruments Incorporated
Figure 12. BQ35100 Single-Cell Simplified Implementation
Pin Configuration
BQ35100PW Pinout
Package: 14-TSSOP (0.173", 4.40mm Width)
| Pin Number | Pin Name | Type | Description |
|---|---|---|---|
| 1 | VIN | P | Battery Input Voltage |
| 2 | ALERT | O | Alert Output |
| 3 | NC | – | No Connect |
| 4 | BAT | P | Battery Sense Input |
| 5 | GE | I | Gas Gauge Enable |
| 6 | REGIN | P | Regulator Input |
| 7 | REG25 | O | 2.5V Regulator Output |
| 8 | V_SS | P | Ground |
| 9 | SRP | O | Sense Resistor Positive |
| 10 | SRN | I | Sense Resistor Negative |
| 11 | TS | I | Temperature Sense Input |
| 12 | VEN | I | Voltage Enable |
| 13 | SCL | I/O | I²C Clock |
| 14 | SDA | I/O | I²C Data |
Notes
- Pin 3 (NC) is a no-connect pin and should be left unconnected.
- Pins 13 and 14 are open-drain I²C interface pins; external pull-up resistors are required.
- Pin 8 (V_SS) is the ground reference for the device.
Absolute Maximum Ratings
Over-operating free-air temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| V REGIN | Regulator Input Range | -0.3 | 5.5 | V |
| V REG25 | Supply Voltage Range | -0.3 | 2.75 | V |
| V IOD | Open-drain I/O pins (SDA, SCL, VEN) | -0.3 | 5.5 | V |
| V IOD | Open-drain I/O pins (ALERT) | -0.3 | 2.75 | V |
| V BAT | BAT Input Pin | -0.3 | 5.5 | V |
| V I | Input voltage range (SRN, SRP, TS) | -0.3 | V REG25 + 0.3 | V |
| T A | Operating free-air temperature range | -40 | 85 | °C |
| T F | Functional Temperature Range | -40 | 100 | °C |
| T STG | Storage temperature range | -65 | 150 | °C |
| T STG | Lead temperature (soldering, 10 s) | -40 | 100 | °C |
Recommended Operating Conditions
TA =-40°C to 85°C; Typical Values at TA = 25°C CLDO25 = 1.0 μ F, and VREGIN = 3.6 V (unless otherwise noted)
| MIN | NOM | MAX | UNIT | |||
|---|---|---|---|---|---|---|
| V REGIN | Supply Voltage | No operating restrictions | 2.7 | 4.5 | V | |
| V REGIN | No FLASH writes | 2.45 | 2.7 | V | ||
| C REGIN | External input capacitor for internal LDO between REGIN and V SS | Nominal capacitor values specified. Recommend a 10% ceramic X5R type capacitor located close to the device. | 0.1 | μF | ||
| C LDO25 | External output capacitor for internal LDO between V REG25 | Nominal capacitor values specified. Recommend a 10% ceramic X5R type capacitor located close to the device. | 0.47 | 1 | μF | |
| I CC_GELOW (1) | Gas gauge in Disabled mode | GE = Low | 0.05 | μA | ||
| I CC_ACC_AVE (1) | Gas gauge in ACCUMULATOR mode average current | Update every 30 minutes otherwise GE = Low | 0.3 | μA | ||
| I CC_SOH_AVE (1) | State-of-health average current | Update every 8 hours otherwise GE = Low | 0.06 | μA | ||
| I CC_EOS_AVE (1) | End-of-service average current | Update every 8 hours 3- s Load Pulse otherwise GE = Low | 0.35 | μA | ||
| VA1 | Input voltage range (VIN, TS) | V SS - 0.05 | 1 | V | ||
| VA2 | Input voltage range (BAT) | V SS - 0.125 | 5 | V |
Thermal Information
| THERMAL METRIC (1) | BQ35100 TSSOP (PW) | UNIT | |
|---|---|---|---|
| 14 PINS | |||
| R θ JA, High K | Junction-to-ambient thermal resistance | 103.8 | °C/W |
| R θ JC(top) | Junction-to-case(top) thermal resistance | 31.9 | °C/W |
| R θ JB | Junction-to-board thermal resistance | 46.6 | °C/W |
| ψ JT | Junction-to-top characterization parameter | 2.0 | °C/W |
| ψ JB | Junction-to-board characterization parameter | 45.9 | °C/W |
| R θ JC(bottom) | Junction-to-case(bottom) thermal resistance | N/A | °C/W |
Typical Application
The BQ35100 device is a highly configurable device with many options. The major configuration choices comprise the battery chemistry and control methods.
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| BQ35100 | Texas Instruments | — |
| BQ35100PWR | Texas Instruments |
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