BQ24195
I²C Buck-Boost Battery Charger · 4.5A Charge · USB OTG 5V/2.1A · Power Path · 1S-4S Li-Ion · QFN-24 (4×4mm) · Texas Instruments
| Part Number | BQ24195 |
|---|---|
| Manufacturer | Texas Instruments |
| Device Type | I²C Buck-Boost Battery Charger with Power Path |
| Input Voltage Range | 3.9 V – 17 V |
| Maximum Charge Current | 4.5 A (programmable via I²C) |
| Battery Support | 1S–4S Li-Ion / Li-Polymer |
| Topology | Buck-Boost converter with Power Path management |
| USB OTG Boost | 5 V / 2.1 A (boost mode) |
| Peak Efficiency | 92% |
| Battery Monitor | Integrated ADC for voltage, current, temperature |
| Package | QFN-24 (4×4mm) |
| Operating Temperature | −40°C to +85°C |
| Input Voltage Range (VBUS) | 3.9 V – 17 V |
|---|---|
| Charge Voltage Accuracy | ±0.5% (typical) |
| Charge Current Accuracy | ±5% (typical) |
| Battery Discharge Current (Supplement) | Up to 4.5 A |
| Quiescent Current (Battery Only) | < 15 µA (ship mode) |
| OTG Output Voltage | 5 V ±2% (configurable) |
| OTG Max Output Current | 2.1 A |
| Switching Frequency | 1.5 MHz (typical) |
| Input Over-Voltage Protection | Up to 19 V absolute maximum |
| JEITA Thermal Regulation | Programmable hot/cold thresholds via I²C |
| Control Interface | I²C (up to 400 kHz Fast-mode) |
|---|---|
| I²C Address | 0x6A or 0x6B (AD pin selectable) |
| Status Pins | STAT, PG (Power Good), INT (interrupt) |
| ADC Monitoring | VBUS, VBAT, IBAT, TS battery monitor |
| Protection Features | Input OVP, battery OVP, thermal shutdown, safety timer |
| Charge Profile | Trickle → Pre-charge → Fast Charge (CC/CV) → Termination |
| Watchdog Timer | Configurable I²C watchdog with disable option |
| Power Path | Dynamic Power Management with battery supplement |
| Part Number | BQ24195 |
|---|---|
| Orderable Qty | 1 pcs – 10,000+ pcs |
| Price (1–9 pcs) | Contact for quote |
| Price (10–99 pcs) | Contact for quote |
| Price (100–499 pcs) | Contact for quote |
| Price (500+ pcs) | Best pricing available |
| Lead Time (stock) | 3–7 business days |
| Packaging | Tape & Reel (T&R) |
| RoHS Compliant | Yes (Pb-free) |
Please confirm exact parameters with manufacturer datasheet.
The BQ24195 from Texas Instruments is a highly integrated I²C-controlled buck-boost battery charger featuring Power Path management and USB OTG boost. Supporting 1S to 4S Li-Ion/Li-Polymer battery configurations, this charger delivers up to 4.5 A charge current with 92% peak efficiency in a compact QFN-24 (4×4mm) package. Its buck-boost topology is a key differentiator, enabling charging from sources both above and below the battery voltage — critical for solar panel inputs and automotive DC systems that can vary widely during operation.
The BQ24195's 3.9–17 V wide input range makes it the go-to choice for solar-powered drone charging stations and field-deployable battery management systems. Unlike standard buck-only chargers, the buck-boost converter can maintain efficient charging even when a partially shaded solar panel drops below the battery stack voltage. For UAV operators in remote locations, this means reliable battery replenishment from 12V car batteries, portable solar arrays, or standard 5V USB sources with automatic topology adjustment.
An integrated battery monitor ADC provides real-time voltage, current, and temperature data accessible via I²C — enabling intelligent fuel gauging and battery health tracking on the flight controller. The USB OTG boost mode delivers 5V at up to 2.1A for powering companion computers like Raspberry Pi, making this charger ideal for autonomous drone platforms requiring an onboard Linux computer for vision processing or mission planning.
Safety features include JEITA-compliant thermal regulation, input over-voltage protection, battery over-voltage protection, and a programmable safety timer. The Dynamic Power Management system automatically reduces charge current when the input source is overloaded, preventing system brownouts. With 4S battery support, the BQ24195 covers the full range from micro drone 1S packs to mid-size commercial drone 4S configurations — a single charger design for an entire drone fleet.
Key Features
- Buck-boost topology — charges from sources above or below battery voltage
- Wide 3.9–17 V input range — solar panel, car battery, and USB-C PD compatible
- 4.5 A max charge current with I²C programmability — rapid field charging
- USB OTG boost: 5V / 2.1A — powers companion computers and USB devices
- Integrated battery monitor ADC — real-time V, I, T for fuel gauging
- 1S–4S Li-Ion/Li-Po support — single design for entire drone fleet
- JEITA thermal regulation — safe charging across −40°C to +85°C
- Dynamic Power Management — auto-adjusts charge current to protect input source
Need BQ24195 for Solar or Wide-Input Drone Charging?
Get competitive pricing and fast delivery from UAVCHIP. Stock available for immediate shipment worldwide.
The BQ24195 is an active production part from Texas Instruments with broad distribution availability. UAVCHIP maintains ready stock with 3–7 business day lead time for standard quantities. The buck-boost architecture requires careful inductor and capacitor selection — refer to TI datasheet SLUSCD9 for recommended BOM. This part is particularly popular for solar-powered UAV charging stations and automotive drone systems due to its 17V input tolerance. For volume orders above 500 pcs, contact our procurement team for allocation and schedule. We also recommend pairing with the INA226 for enhanced current monitoring precision in applications requiring coulomb counting.