Specifications
| Type | Description |
|---|---|
| Part Number | BQ25606 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Component Type | Power_IC |
| Package Case | 24-pin VQFN, 4.00 mm x 4.00 mm body |
| Battery Chemistry | Single-cell Li-ion and Li-polymer |
| Maximum Charge Current | 3.0 A |
| Topology | Synchronous switch-mode buck charger |
| Switching Frequency | 1.5 MHz |
| Charge Efficiency | 92% at 2-A charge current from 5-V input |
| Input Voltage Range | 3.9 V to 13.5 V |
| Input Absolute Maximum Voltage | 22 V |
| VINDPM Threshold | Up to 4.6 V |
| VINDPM Behavior | Automatically tracks battery voltage |
| Supported Input Source Detection | USB SDP, DCP and non-standard adapters |
| USB Compliance | USB 2.0 and USB 3.0 power specs |
| OTG Output Voltage | 5.15 V |
| OTG Output Current Limit | Up to 1.2 A |
| Boost Efficiency | 92% at 1-A output current |
| OTG Soft-Start Capacitive Load | Up to 500 uF |
| Battery Discharge MOSFET On-Resistance | 19.5 mOhm |
| Low Battery Leakage Current | 58 uA |
| Quiescent Battery Current | 58 uA |
| Charge Voltage Regulation Accuracy | +/-0.5% |
| Charge Current Regulation Accuracy | +/-6% at 1.2-A and 1.8-A charge current regulation |
| Input Current Regulation Accuracy | +/-5% at 0.5-A, 1.2-A and 1.8-A input current regulation |
| VBUS OVP Reaction Time | 200 ns |
| Input Voltage Regulation Accuracy | +/-3% |
| TS Profile | JEITA Hot/Cold |
| Charge Safety Timer Accuracy | 10 hr |
| Charge Voltage Limit | 4.2 V / 4.35 V / 4.4 V |
| Battery Voltage Regulation Accuracy | +/-0.5% |
| Minimum System Voltage | 3.5 V |
| Thermal Regulation Threshold | 110 degC |
| Safety Certification | IEC 62368-1 CB Certification |
| Integrated Power FETs | RBFET Q1, HSFET Q2, LSFET Q3, BATFET Q4 |
| BAT Pin Capacitor | 10 uF, connected closely to BAT pin |
| BTST Bootstrap Capacitor | 0.047 uF, connected from SW to BTST |
| CE Pin Function | Charging enabled when driven low |
| Datasheet Status | request_only |
Product Overview
BQ25606 is a Texas Instruments standalone buck battery charger in the Power_Management category. It is intended for single-cell Li-ion and Li-polymer battery charge management and uses a synchronous switch-mode buck charger topology with integrated RBFET Q1, HSFET Q2, LSFET Q3, and BATFET Q4 power FETs.
The charger supports up to 3.0 A charge current and switches at 1.5 MHz. Extracted operating parameters include 92% charge efficiency at 2 A from a 5 V input, a 3.9 V to 13.5 V input voltage range, 22 V input absolute maximum voltage, and VINDPM operation up to 4.6 V with automatic battery-voltage tracking.
For USB-powered systems, BQ25606 supports USB SDP, DCP, and non-standard adapter detection, with USB 2.0 and USB 3.0 power specification compliance for input current and voltage regulation. USB OTG operation supplies 5.15 V on VBUS with up to 1.2 A output current limit and 92% boost efficiency at 1 A.
The device is provided in a 24-pin VQFN, 4.00 mm x 4.00 mm body package. Assembly-related facts include a 10 uF BAT pin capacitor placed close to BAT and a 0.047 uF bootstrap capacitor connected from SW to BTST.
Key Features
- 3.0 A maximum standalone switch-mode charge current
- Synchronous buck charger topology with 1.5 MHz switching
- 92% charge efficiency at 2 A from 5 V input
- 3.9 V to 13.5 V input operating range
- 22 V input absolute maximum voltage rating
- USB SDP, DCP and non-standard adapter detection
- 5.15 V USB OTG output with 1.2 A limit
- 92% boost efficiency at 1 A output current
- Integrated RBFET, HSFET, LSFET and BATFET devices
- JEITA Hot/Cold TS profile and 110 degC thermal regulation
Typical Applications
- Single-cell Li-ion battery charging
- Single-cell Li-polymer battery charging
- USB input battery-powered systems
- USB OTG VBUS supply
- High-voltage adapter charging
- NVDC power path management
- Systems requiring JEITA Hot/Cold charging
Procurement Notes
When requesting a quote for BQ25606, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.
FAQ
What battery chemistries does BQ25606 support?
BQ25606 supports charge management for single-cell Li-ion and Li-polymer batteries. The extracted datasheet facts identify it as a standalone buck battery charger for these single-cell rechargeable battery chemistries.
What is the maximum charge current of BQ25606?
The maximum charge current is 3.0 A in standalone switch-mode battery charger operation. The charger uses a synchronous switch-mode buck topology with a 1.5 MHz switching frequency.
What USB input sources can BQ25606 detect?
BQ25606 includes built-in USB interface support for USB SDP, DCP, and non-standard adapter detection. The extracted facts also state USB 2.0 and USB 3.0 power specification compliance for input current and voltage regulation.
What OTG output capability is specified for BQ25606?
In USB On-The-Go operation, BQ25606 supplies 5.15 V on VBUS. Its OTG output current limit is up to 1.2 A, with 92% boost efficiency specified at 1 A output current.
What package is used for BQ25606?
BQ25606 is listed in a 24-pin VQFN package with a 4.00 mm x 4.00 mm body. Assembly facts include a 10 uF BAT pin capacitor and a 0.047 uF BTST bootstrap capacitor from SW to BTST.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.