BQ25185 Series
1-cell, 1-A stand-alone linear battery charger with power path and solar input support
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
1-cell, 1-A stand-alone linear battery charger with power path and solar input support
| Part | Supplier Device Package | Operating Temperature [Max] | Operating Temperature [Min] | Charge Current - Max [Max] | Current - Charging | Battery Pack Voltage | Number of Cells | Programmable Features | Voltage - Supply (Max) [Max] | Mounting Type | Package / Case | Battery Chemistry | Fault Protection |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ25185DLHR | 10-WSON | 125 ¯C | -40 °C | 1 A | Constant - Programmable | 3.6 V, 3.65 V, 4.02 V, 4.1 V, 4.2 V, 4.35 V, 4.4 V | 1 | Current, Timer, Voltage | 18 V | Surface Mount | 10-WFDFN Exposed Pad | Multi-Chemistry | Over Current, Over Temperature, Over-Under Voltage, Short Circuit |
Key Features
• 1-A linear battery charger3.0-V to 18-V input voltage operating range25-V tolerant input voltageExternal resistor programmable operation:ILIM/VSET sets battery regulation voltage to 3.6V, 3.65 V, 4.02 V, 4.1V, 4.2 V, 4.35 V, or 4.4 VILIM/VSET sets input current limit to 100 mA, 500 mA, or 1100 mAISET to set charge current from 5 mA to 1 ALi-ion, Li-Poly, and LiFePO4 chemistries support115-mΩ battery FET ON resistanceUp to 3.125-A discharge current to support high system loadsPower path management for powering the system and charging the batteryRegulated system voltage (SYS) at 4.5 VConfigurable input current limitUSB Suspend mode supportedBattery Tracking input voltage dynamic power management (VINDPM) for high impedance input sourcesDynamic power path management optimizes charging from weak adaptersUltra low quiescent current4-µA in Battery Only mode30-µA Input adapter Iq in sleep mode3.2-µA Battery discharge current in Factory ModeIntegrated fault protectionInput overvoltage protection (VIN_OVP)Battery undervoltage protection (BUVLO)Battery short protection (BATSC)Battery overcurrent protection (BATOCP)Input current limit protection (ILIM)Thermal regulation (TREG) and thermal shutdown (TSHUT)Battery thermal fault protection (TS)Safety timer faultISET and ILIM/VSET pin short/open protection.1-A linear battery charger3.0-V to 18-V input voltage operating range25-V tolerant input voltageExternal resistor programmable operation:ILIM/VSET sets battery regulation voltage to 3.6V, 3.65 V, 4.02 V, 4.1V, 4.2 V, 4.35 V, or 4.4 VILIM/VSET sets input current limit to 100 mA, 500 mA, or 1100 mAISET to set charge current from 5 mA to 1 ALi-ion, Li-Poly, and LiFePO4 chemistries support115-mΩ battery FET ON resistanceUp to 3.125-A discharge current to support high system loadsPower path management for powering the system and charging the batteryRegulated system voltage (SYS) at 4.5 VConfigurable input current limitUSB Suspend mode supportedBattery Tracking input voltage dynamic power management (VINDPM) for high impedance input sourcesDynamic power path management optimizes charging from weak adaptersUltra low quiescent current4-µA in Battery Only mode30-µA Input adapter Iq in sleep mode3.2-µA Battery discharge current in Factory ModeIntegrated fault protectionInput overvoltage protection (VIN_OVP)Battery undervoltage protection (BUVLO)Battery short protection (BATSC)Battery overcurrent protection (BATOCP)Input current limit protection (ILIM)Thermal regulation (TREG) and thermal shutdown (TSHUT)Battery thermal fault protection (TS)Safety timer faultISET and ILIM/VSET pin short/open protection.
Description
AI
The BQ25185 is a linear battery charger IC focusing on small solution size and low quiescent current for extending battery life. The device is available in a leadless, small package with a thermal pad giving thermal performance. The device can support up to 1-A charging and system loads of up to 3.125 A.
The battery is charged using a standard Li-ion or LiFePO4 charge profile with three phases: precharge, constant current and constant voltage. Thermal regulation provides the maximum charge current while managing the device temperature. The charger is also optimized for battery to battery charging with 3-V minimum input voltage operation and can withstand 25-V absolute maximum line transients. The device integrates a single push-button input to reduce the total solution footprint.
The BQ25185 is a linear battery charger IC focusing on small solution size and low quiescent current for extending battery life. The device is available in a leadless, small package with a thermal pad giving thermal performance. The device can support up to 1-A charging and system loads of up to 3.125 A.
The battery is charged using a standard Li-ion or LiFePO4 charge profile with three phases: precharge, constant current and constant voltage. Thermal regulation provides the maximum charge current while managing the device temperature. The charger is also optimized for battery to battery charging with 3-V minimum input voltage operation and can withstand 25-V absolute maximum line transients. The device integrates a single push-button input to reduce the total solution footprint.