SLUAAG9 September 2021 BQ25170 , BQ25171-Q1 , BQ25175
Table 6-1 provides a summary of the pins on the device.
Pin - Name | I/O | Description | Comments |
---|---|---|---|
Pin 1 – IN | P | Input power supply | Operating range to 18 V, Absolute Max 40 V |
Pin 2 – ISET | I | Resistor R-ISET sets fast charge current | ICHG = K-ISET/R-ISET, K-ISET= 300 AΩ, 375 Ω = 800 mA |
Pin 3 – CE | I | Active Low Charge Enable pin, IC in shutdown mode when CE is high | IC enabled by default when pin is floating |
Pin 4 – TS | I | Battery temperature input, connect a 10 kΩ NTC thermistor | Connect 10 kΩ resistor from TS to gnd if TS function is not used |
Pin 5 – GND | - | Ground terminal | |
Pin 6 – CHM_TMR | I | Resistor R-CHM_TMR sets chemistry and charge time | Resistor range 3.6 kΩ to 100 kΩ |
Pin 7 – STAT1 | O | Open drain charge status | |
Pin 8 – STAT2 | O | Open drain charge status | |
Pin 9 – VSET | I | Resistor R-VSET sets out pin regulation voltage | Resistor range 3.6 kΩ to 100 kΩ |
Pin 10 – OUT | P | Battery/ system load connection | |
Thermal Pad | - | Exposed thermal pad | Connect thermal pad to board gnd plane |