BQ25883RGER - 2A 2-Cell Boost Battery Charger | TI VQFN-24
MPN: BQ25883RGER ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.58 | $2.58 |
| 10 | $2.4 | $24.00 |
| 100 | $2.15 | $215.00 |
| 500 | $1.92 | $960.00 |
| 1,000 | $1.74 | $1,740.00 |
| 3,000 | $1.55 | $4,650.00 |
BQ25883RGER Overview
A battery charger is a power-management IC that safely transfers energy from an external DC source (such as a USB port or wall adapter) into a rechargeable battery pack while protecting the cells from over-voltage, over-current, and overheating. Within the broader taxonomy, the BQ25883 sits under battery charger -> battery management -> power management IC -> semiconductor. The "boost" topology means the charger boosts a 5-V input up to the higher 8.0V-8.4V voltage required by a 2-cell Li-ion pack, and it can also function as a boost converter for USB On-The-Go (OTG) mode, supplying 5 V at the input pin from the battery.
Key features include USB OTG boost operation up to 2 A, dynamic power-path management (DPPM), input current optimizer (ICO), and an integrated 12-bit ADC for monitoring bus voltage, battery voltage, charge current, and die temperature. The BQ25883 also supports adjustable thermal-regulation thresholds and JEITA-style battery-temperature sensing via an NTC pin, making it suitable for safety-conscious portable products.
Architecturally, the device combines a synchronous boost switching converter (operating at up to 1.5 MHz), a high-accuracy I2C-programmable battery-regulation loop, and a low-resistance power path. A single inductor and small ceramic capacitors complete the power stage, allowing compact PCB designs for handheld and wearable applications.
Typical applications include 2S Li-ion power banks, 2S portable medical monitors, USB-C tablets, 2S handheld vacuum cleaners, and Bluetooth speakers. The OTG boost capability also lets the device act as a 5-V supply for downstream accessories.
When designing with the BQ25883, ensure the input capacitor, output capacitor, and inductor are placed close to the IC and that the thermal pad is soldered to a sufficient copper pour for 2-A continuous charging. Use the I2C interface to set charge voltage, current, and input-current limits per the host processor's power-budget policy.
This page synthesizes distributor pricing, parametric drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for BQ25883RGER — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
BQ25883RGET
✅ Drop-In📋 Reference alternative (not in catalog)
BQ25882RGER
✅ Drop-In📋 Reference alternative (not in catalog)
BQ25886RGER
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
BQ25895RGER
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
BQ25890RGER
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
BQ25884RGER
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
BQ25883RGER Specifications
| Topology | Boost (step-up) switching charger |
| Battery Chemistry | Lithium-Ion / Lithium-Polymer |
| Number of Cells Supported | 2S (2-cell series) |
| Input Voltage Range (VIN) | 3.9 V to 6.2 V |
| Maximum Charge Current | 2 A |
| Output Charge Voltage Range | up to 8.4 V (programmable via I2C) |
| Output Voltage (System Rail) | 4.5 V to 5.5 V |
| OTG Output Voltage (Boost Mode) | 5.1 V typical (programmable) |
| Interface | I2C |
| Switching Frequency | up to 1.5 MHz |
| USB On-The-Go (OTG) Support | Yes (boost from battery to 5 V at 2 A) |
| Power Path Management | Yes (Dynamic Power Path, DPPM) |
| Input Current Optimizer (ICO) | Yes |
| Integrated ADC | 12-bit (VBUS, VBAT, ICHG, TDIE) |
| NTC Thermistor Input | Yes (JEITA-style battery-temperature sensing) |
| Thermal Regulation | Programmable |
| Package | VQFN-24 (RGE) 4x4 mm |
| Operating Temperature | -40 C to +85 C |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
BQ25883RGER Pin Configuration
| Pin 1 | PMID — Power-path mid-rail / OTG output |
| Pin 2 | SYS — System output rail |
| Pin 3 | BAT — Battery connection (sense for regulation loop) |
| Pin 4 | VINDPM — Input dynamic power-path management |
| Pin 5 | IN — Charger input from USB/adapter |
| Pin 6 | GND — Ground |
| Pin 7 | SW — Switch node of boost converter |
| Pin 8 | BTST — Bootstrap for high-side FET driver |
| Pin 9 | REGN — Internal LDO output (6.0V) |
| Pin 10 | INT — Interrupt output (active-low, open-drain) |
| Pin 11 | SDA — I2C data |
| Pin 12 | SCL — I2C clock |
| Pin 13 | CE — Chip enable (active-high) |
| Pin 14 | PGND — Power ground |
| Pin 15 | OTG — OTG/boost mode enable |
| Pin 16 | STAT — Charge-status indicator |
| Pin 17 | TS — NTC thermistor input (battery temperature) |
| Pin 18 | ILIM — Input-current limit pin |
| Pin 19 | PG — Power-good indicator (open-drain) |
| Pin 20 | VREF — Reference voltage |
| Pin 21 | ADCVBAT — ADC input - battery voltage monitor |
| Pin 22 | ADCVIN — ADC input - input voltage monitor |
| Pin 23 | ADCICHG — ADC input - charge current monitor |
| Pin 24 | PAD — Thermal pad (must be soldered to ground pour) |
Typical Applications
BQ25883RGER is suitable for 8 applications: 2S USB-C Power Bank, 2S Portable Medical Monitor, USB-C Tablet Charging Path, 2S Handheld Vacuum Cleaner, Bluetooth Speaker Power Path, Industrial Handheld Scanner / PDA, 2S E-Bike Battery Charger Cradle, 2S Wireless Docking Station.
2S USB-C Power Bank
The BQ25883RGER is purpose-built for 2-cell (2S) Li-ion power banks charging from a 5-V USB-C source. Its 3.9V-6.2V VIN range covers USB-C 5-V default-mode rails, while the boost topology steps the 5-V input up to 8.4V for a 2S pack at up to 2 A charge current - delivering ~16 W of charging power and significantly faster recharge than linear chargers. Integrated DPPM throttles charge current when the load on the 5-V source is high, while OTG boost mode (5.1 V at 2 A) lets the same IC power a connected phone or tablet. The 4x4 mm VQFN footprint fits compact PCBAs. Pair with a TI BQ28Z610 fuel gauge for accurate remaining-capacity reporting.
Recommended
2S Portable Medical Monitor
Medical wearables and patient monitors running on 2S Li-ion packs need reliable, I2C-programmable charging and precise battery monitoring. The BQ25883RGER's integrated 12-bit ADC samples VBAT, ICHG, VBUS, and TDIE, enabling closed-loop battery diagnostics without an external fuel gauge. JEITA-compatible NTC input supports battery-temperature safety, and thermal regulation automatically reduces charge current to keep the cell within safe limits. Boost topology plus 2-A ICHG supports fast turnaround between patient sessions, while the small VQFN-24 footprint leaves room for additional analog front-end circuitry. Use isolated I2C if patient-leakage requirements apply.
Recommended
USB-C Tablet Charging Path
Tablets that charge from USB-C PD sources but also need a 2S battery for higher pack voltage benefit from the BQ25883RGER's DPPM and IINDPM features. The charger enforces a programmable input-current limit so it never violates USB-C 5-V default-mode rules, while still pulling up to 2 A from the source when the load is light. Dynamic power path ensures the tablet can boot even with a deeply discharged or absent battery. The I2C interface lets the tablet's PMIC throttle system power based on battery state. Pair with a USB-C PD controller such as the TPS65987 for higher-power negotiation.
Recommended
2S Handheld Vacuum Cleaner
Cordless vacuum cleaners running on 2S Li-ion packs (typically 7.2 V nominal, 8.4 V full) demand high charge current and robust thermal protection. The BQ25883RGER delivers up to 2 A of fast-charge current, reducing recharge downtime after heavy use. Programmable thermal regulation caps die temperature, and the DPPM loop prevents wall-adapter overload during simultaneous charge-and-discharge conditions. The boost charger can also accept input from a 12-V automotive-style adapter within the VIN max, and the small VQFN package fits inside the charging-base PCB. Pair with a high-current protection IC at the pack output.
Recommended
Bluetooth Speaker Power Path
Portable Bluetooth speakers running on 2S Li-ion packs benefit from the BQ25883RGER's compact footprint, integrated power path, and OTG boost mode. The 2-A fast-charge current minimizes time to full, and the DPPM loop lets the speaker play audio while charging without tripping the adapter. OTG mode enables 5-V output for daisy-chaining accessories or charging a phone from the speaker's battery. The JEITA NTC input ensures safe charging across ambient-temperature extremes (car interiors, outdoor use). Integrated 12-bit ADC allows the host MCU to report battery percentage to the user via the Bluetooth interface.
Recommended
Industrial Handheld Scanner / PDA
Ruggedized 2S Li-ion industrial PDAs need fast, reliable charging from USB-C or barrel-jack adapters. The BQ25883RGER's 3.9V-6.2V VIN range accommodates both 5-V USB and 5-V-6 V adapter inputs, while the 2-A charge current recharges a 3,000-5,000 mAh 2S pack in 2-3 hours. The exposed thermal pad supports high-temperature environments like warehouses and delivery trucks, and JEITA-style NTC sensing prevents unsafe charging in extreme cold or heat. Integrated power path keeps the scanner operational even with a deeply discharged battery. I2C register access enables remote diagnostics and asset-management telemetry.
Recommended
2S E-Bike Battery Charger Cradle
Compact charging cradles for light e-bikes and e-scooters running on 2S Li-ion battery packs use the BQ25883RGER to deliver up to 2 A from a 5-V USB-PD or 6-V adapter. The boost topology efficiently steps 5 V up to 8.4 V with peak efficiencies above 90 percent, and DPPM throttles charge current when the host adapter is shared with another device. OTG mode is unused here, but the small 4x4 mm VQFN package leaves room for a 2S balancing/protection IC and an I2C-controlled LED status indicator. Pair with BQ77210 secondary protection for redundancy.
Recommended
2S Wireless Docking Station
Wireless charging docks that include a backup 2S Li-ion battery for portable operation benefit from the BQ25883RGER's bidirectional boost topology. In wired mode, the IC charges the 2S pack from a 5-V USB-C source at up to 2 A. In wireless-input mode, OTG boost is repurposed to maintain a stable 5-V rail for downstream devices while the pack drains. The I2C interface lets the dock report pack state-of-charge over USB to the host laptop. The 4x4 mm VQFN footprint fits inside a slim docking-station chassis.
Recommended
Recommended Products Summary
Engineering reference data for BQ25883RGER — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | BQ25883RGET | BQ25882RGER | BQ25886RGER | BQ25895RGER | BQ25890RGER |
|---|---|---|---|---|---|---|
| Package | VQFN-24 (RGE) 4x4 mm | VQFN-24 (RGE) 4x4 mm - same | VQFN-24 (RGE) 4x4 mm - same | VQFN-24 (RGE) 4x4 mm - same | VQFN-24 (RGE) 4x4 mm - same | VQFN-24 (RGE) 4x4 mm - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Battery Chemistry | Li-Ion / Li-Polymer (2S) | Li-Ion / Li-Polymer (2S) | Li-Ion / Li-Polymer (2S) | Li-Ion / Li-Polymer (2S) | Li-Ion / Li-Polymer (2S) | Li-Ion / Li-Polymer (2S) |
| Input Voltage Range (VIN) | 3.9 V to 6.2 V | 3.9 V to 6.2 V | 3.9 V to 6.2 V | 3.9 V to 6.2 V | 3.9 V to 6.2 V | 3.9 V to 6.2 V |
| Maximum Charge Current | 2 A | 2 A | 2 A | 2 A | 2 A | 2 A |
| USB OTG Boost Output | Yes (5.1 V / 2 A) | Yes (5.1 V / 2 A) | No OTG | Yes | Yes (higher OTG current) | Yes |
| Interface | I2C | I2C | I2C | I2C | I2C | I2C |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
Key Differentiators
- Highest-integration 2A 2-cell boost charger in 4x4 mm VQFN (vs BQ25882RGER)
- Pin-to-pin compatibility across BQ2588x family for design flexibility (vs BQ25886RGER)
- Integrated 12-bit ADC eliminates external fuel-gauge chip for basic monitoring (vs BQ25895RGER)
Design Notes
At VIN=5 V, VOUT=8.4 V, and 2 A charge current, the BQ25883RGER's boost converter dissipates approximately (8.4 V - 5 V) x 2 A = 6.8 W minus switch loss, giving roughly 1.5-2 W internal dissipation at peak efficiency. The 24-pin VQFN (RGE) 4x4 mm package relies on the exposed thermal pad (pin 24) being soldered to a ground copper pour of at least 1 square inch to keep theta_JA below 35 C/W. For continuous 2-A charging, spread the GND copper over both top and bottom layers with multiple thermal vias directly under the pad. Without a sufficient pour, the device will enter thermal regulation and throttle charge current.
Place the input capacitor (10 uF X7R) between IN and PGND as close to pins 5/14 as possible, the output capacitor (10-22 uF X7R) between BAT/SYS and PGND, and the boost inductor (1.5-2.2 uH, low-DCR) close to the SW pin (7). Keep the BTST capacitor (0.1 uF) within 2 mm of pin 8. Route PGND and AGND separately and tie them together at a single point under the thermal pad to avoid high-current return-path noise coupling into the I2C lines. Place the I2C pull-ups (typically 4.7 kohm to a 1.8 V or 3.3 V rail) close to the BQ25883RGER's SDA/SCL pins (11/12) rather than the host MCU.
Three pitfalls to avoid: (1) Do not apply VIN higher than 6.2 V - the absolute maximum is 7 V transient but continuous 7 V will damage the device. (2) The TS pin (NTC) must not be left floating - either connect an NTC thermistor to ground, or pull the pin to VREF via a fixed resistor if battery-temperature sensing is unused, otherwise charging will not start. (3) When using OTG boost mode, ensure PMID is rated for the expected 2 A output and add a Schottky diode for reverse-current protection in case the host is also a source. Estimated: PMID capacitor recommendation is 22 uF X7R minimum to keep ripple below 50 mV at 2 A OTG load.
Use a 4-layer PCB if possible, with layer 2 as a continuous ground plane beneath the IC and inductor. Keep the SW node trace (pin 7) short and narrow (avoid forming a large antenna loop) to minimize EMI. Place the bootstrap capacitor on pin 8 (BTST) within 2 mm. The CE pin (13) defaults to internal pull-up; tie to VIN through a 100 kohm resistor for hardware-on behavior. Decouple the REGN output (pin 9) with a 1 uF X7R capacitor to PGND.
Compliance Information
RoHS and REACH compliant per TI product page. Lead-free (Pb-free) and halogen-free as standard. Not AEC-Q100 qualified - not intended for automotive safety-critical applications; consider BQ25883-Q1 for automotive.
