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Texas Instruments BQ24600RVAR
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- Part No.:
- BQ24600RVAR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Chargers
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
BQ24600RVAR.pdf
- Description:
- IC BATT CHG LI-ION 1-6CEL 16VQFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
BQ24600RVAR from Texas Instruments is a stand-alone synchronous switch-mode Li-ion/Li-polymer battery charge controller in a 16-pin VQFN (3.5 mm × 3.5 mm) package. It delivers up to 10-A charge current, supports 1S–6S battery configurations, regulates battery voltage with ±0.5% accuracy at 2.1 V on VFB, and operates across a 5-V to 28-V adapter input range. It is used in portable industrial equipment requiring autonomous, high-efficiency charging with thermal and overvoltage protection.
For engineers reviewing the BQ24600RVAR datasheet, BQ24600RVAR pinout, BQ24600RVAR application, or BQ24600RVAR equivalent, key selection considerations include its 1.2-MHz synchronous buck topology, integrated 6-V gate drivers with 30-ns dead time, low-quiescent-current sleep mode (<15 µA), and thermistor-based temperature qualification for safe charging in medical and power tool systems.
Technical Context
The BQ24600RVAR implements a constant-frequency synchronous PWM controller with internal loop compensation and soft-start. Its three-phase charging sequence-preconditioning, constant-current, and constant-voltage-uses dedicated comparators for VLOWV (1.55 V), VRECHG (35–65 mV below regulation), and termination (1/10th ISET-set current).
It integrates dual LDOs: a 3.3-V VREF regulator (±0.5% tolerance, 35-mA limit) for precision feedback and biasing, and a 6-V REGN regulator (5.7–6.3 V, 40-mA limit) for gate drive supply. Battery detection, AC overvoltage (32 V), thermal shutdown (145°C), and cycle-by-cycle overcurrent protection are all implemented on-die without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Input Range | 5 V to 28 V - supports wide-input adapters and 1S–6S battery packs without external regulators |
| Charge Current Accuracy | ±3% - ensures precise current regulation using SRP/SRN differential sensing with 100-mV full-scale range |
| VFB Regulation Voltage | 2.1 V ±0.5% - sets battery voltage reference; enables accurate 4.2 V/cell via resistor divider scaling |
| Switching Frequency | 1020–1380 kHz - enables compact magnetics and high efficiency in space-constrained portable designs |
| Sleep Mode Discharge Current | <15 µA - minimizes battery self-discharge when adapter is absent and CE is low |
| Thermal Shutdown Threshold | 145°C rising edge with 15°C hysteresis - protects MOSFETs and PCB during sustained high-load operation |
| ISET Input Range | 0–2 V - directly programs charge, precharge, and termination currents with KISET = 5 A/V (RSENSE = 10 mΩ) |
Pinout & Package
Package: 16-pin VQFN (RVA), 3.5 mm × 3.5 mm, exposed thermal pad soldered to GND plane for thermal dissipation and low-impedance grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | IC power supply input | Accepts 5–28 V adapter input; requires 1-µF ceramic decoupling to GND near pin |
| CE | Charge-enable logic input | Active-HIGH enable with internal 1-MΩ pull-down; controls start/stop of full charging sequence |
| STAT | Open-drain status output | Indicates charge state (precharge, fast charge, terminate, fault) via external pull-up |
| TS | Thermistor sense input | Monitors NTC thermistor divider to suspend charge outside hot/cold thresholds (36.2–74.5% of VREF) |
| PG | Open-drain power-good output | Signals valid VCC presence; usable for host MCU wake-up or FET control |
| VREF | 3.3-V regulated reference output | Stable bias source for VFB divider, TS network, and ISET programming; requires 1-µF local bypass |
| ISET | Charge current programming input | Voltage-controlled setpoint for fast charge (KISET = 5 A/V), precharge (KPRECH = 0.5 A/V), and termination (KTERM = 0.5 A/V) |
| VFB | Battery voltage feedback input | Regulated to 2.1 V; connects to resistor divider across battery to set final charge voltage |
| SRP / SRN | Current-sense differential inputs | Measure voltage drop across RSENSE (e.g., 10 mΩ); full-scale = 100 mV for 10-A max current |
| GND | Analog/digital ground | Low-noise reference node; must be connected to thermal pad vias and system ground plane |
| REGN | 6-V low-side driver supply | Provides gate drive for LODRV and bootstrap charging for HIDRV via Schottky diode to BTST |
| LODRV | Low-side NMOS gate driver output | Drives gate of low-side MOSFET; designed for <7-Ω RDS(on) and fast switching with minimal ringing |
| PH | Phase node connection | Connects to junction of inductor, low-side drain, and high-side source; critical for bootstrap timing |
| HIDRV | High-side NMOS gate driver output | Drives high-side MOSFET gate; features 3.3–6 Ω turn-on resistance and 30-ns dead-time control |
| BTST | Bootstrap capacitor return | Completes bootstrap circuit with PH and REGN; requires 0.1-µF ceramic capacitor between BTST and PH |
Key Features
| Feature | Design Value |
|---|---|
| 1.2-MHz Synchronous Buck Converter | Enables use of ≤3.3 µH inductors and small ceramic output capacitors for ultra-compact charger designs |
| Integrated Dual LDOs (VREF + REGN) | Eliminates need for external bias rails-VREF powers analog references, REGN supplies both gate drivers |
| Autonomous Three-Phase Charging | Performs preconditioning, CC, and CV phases without host MCU intervention; includes auto-restart on VBAT drop |
| Comprehensive Safety Protection | On-die detection of input overvoltage (32 V), battery overvoltage (104% of VREG), thermal shutdown (145°C), and short-circuit (2 V BATSHORT threshold) |
| Low-Power Sleep Mode | Draws <15 µA from battery when adapter is disconnected-preserves battery capacity during storage or transport |
Applications
| Portable Medical Devices | Industrial Handheld Terminals |
|---|---|
Use Scenario: Rechargeable battery pack in portable ultrasound or patient monitor with strict safety and runtime requirements. IC Role / Device Role / Timing Role: Stand-alone charge controller managing 2S–4S Li-ion packs, enforcing thermistor-based temperature windows and 5-hour safety timer. Use Value: Eliminates host processor involvement in charging; meets IEC 62368-1 thermal and fault-response requirements via integrated protections. |
Use Scenario: Ruggedized barcode scanner or data collector deployed in warehouses with frequent hot-swap battery usage. IC Role / Device Role / Timing Role: Autonomous charger enabling rapid 10-A recharging of 3S Li-polymer packs while detecting battery presence and cell undervoltage. Use Value: Reduces BOM count by integrating gate drivers, LDOs, and comparators-no external FET drivers or supervisor ICs needed. |
| Power Tools | Mobile Internet Devices |
Use Scenario: Cordless drill/driver with multi-cell Li-ion pack requiring high-current charging and robust overtemperature response. IC Role / Device Role / Timing Role: Primary charge controller executing CC/CV profile with cycle-by-cycle OCP and automatic recharge after partial discharge. Use Value: Delivers >92% peak efficiency at 10 A due to synchronous NMOS-NMOS topology and 99.5% max duty cycle capability. |
Use Scenario: Ultra-mobile PC or 2-in-1 tablet with slim form factor demanding minimal board area and low standby power loss. IC Role / Device Role / Timing Role: High-accuracy battery management IC regulating voltage to ±0.5% and current to ±3%, supporting adaptive fast-charge algorithms. Use Value: Enables Energy Star-compliant quiescent performance (<1.5 mA off-state input current) without sacrificing charge speed or precision. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Li-ion/Li-polymer charge controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ24610RVAT | Pin-compatible variant with identical functionality but rated for extended temperature range (–40°C to 125°C vs. –40°C to 85°C for BQ24600RVAR) | Suitable for automotive under-hood or outdoor industrial deployments requiring wider thermal margin | Select BQ24610RVAT when operating ambient exceeds 85°C or when AEC-Q200 stress testing is required |
| BQ24617RVAT | Includes integrated ADC for VFB/ISET/TS monitoring and I²C interface for host-configurable charge parameters; larger 20-pin VQFN package | Used where firmware-defined charging profiles, real-time telemetry, or dynamic parameter adjustment are needed | Choose BQ24617RVAT only if host MCU integration, programmable safety thresholds, or telemetry logging are design requirements |
Compared with BQ24600RVAR, BQ24610RVAT offers identical electrical behavior with enhanced thermal rating, while BQ24617RVAT trades autonomy for configurability and telemetry-neither is pin-compatible with BQ24600RVAR beyond shared functional ancestry.
Availability
BQ24600RVAR is available at Aetrix Electronics and suitable for portable medical devices, industrial handheld terminals, power tools, mobile internet devices, and ultra-mobile PCs requiring stable component supply and long-term production continuity.
Supply support for BQ24600RVAR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management technologies with over 50 years of innovation in energy-efficient system solutions.
The BQ24600RVAR belongs to TI's battery management IC portfolio, engineered for autonomous, high-efficiency Li-ion/Li-polymer charging in space- and power-constrained portable and industrial applications without host processor dependency.
FAQ
What is the maximum supported battery configuration for the BQ24600RVAR?
The BQ24600RVAR supports 1S to 6S Li-ion or Li-polymer battery configurations. This is achieved by scaling the VFB feedback network-using resistors R1 and R2-to set the target regulation voltage (e.g., 4.2 V per cell). The device does not include cell balancing; it assumes series-connected cells with matched characteristics. BQ24600RVAR monitors total pack voltage only.
How does the BQ24600RVAR handle battery temperature monitoring?
The BQ24600RVAR uses the TS pin to read a voltage divider formed between VREF and GND through an NTC thermistor. It compares this voltage against four internal thresholds-VLTF (cold), VHTF (hot), VTCO (cutoff)-to suspend charging outside safe temperature ranges. Deglitch timers (400 ms out-of-range, 20 ms in-range) prevent false triggers from transient noise on the TS line.
Can the BQ24600RVAR operate without an external microcontroller?
Yes, the BQ24600RVAR is a fully stand-alone charger. It executes preconditioning, constant-current, and constant-voltage phases autonomously. Charge enable (CE), status (STAT), and power-good (PG) pins allow optional host interaction, but no firmware or external sequencing logic is required for basic operation. All safety timers, comparators, and drivers are integrated.
What is the purpose of the REGN pin on the BQ24600RVAR?
The REGN pin on the BQ24600RVAR outputs a regulated 6-V supply (5.7–6.3 V) used to power the LODRV gate driver and-via a Schottky diode-to charge the bootstrap capacitor connected between BTST and PH. This eliminates the need for an external 6-V rail and ensures robust high-side NMOS gate drive even during low-VCC conditions.
Does the BQ24600RVAR support reverse current blocking from battery to adapter?
No, the BQ24600RVAR does not integrate reverse current blocking. It relies on external P-channel MOSFETs (e.g., Q4/Q5 in typical schematics) controlled by PG or host logic to prevent battery discharge into the adapter path. The IC detects VCC < VSRN and enters low-Iq sleep mode (<15 µA), but does not actively block conduction-external circuitry is required for true diode-or or ideal diode functionality.
BQ24600RVAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1 ~ 6
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Current
- Fault Protection:
- Over Current, Over Temperature, Over Voltage, Short Circuit
- Charge Current - Max:
- 10A
- Battery Pack Voltage:
- 14V (Max)
- Voltage - Supply (Max):
- 28V
- Interface:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (3.5x3.5)
BQ24600RVAR FAQ
1.How can I place an order for BQ24600RVAR through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ24600RVAR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for BQ24600RVAR reliable?
The price and inventory of BQ24600RVAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ24600RVAR is usually 5 days.
3.What payment methods are accepted for BQ24600RVAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ24600RVAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ24600RVAR?
BQ24600RVAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ24600RVAR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for BQ24600RVAR?
For technical support, including BQ24600RVAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ24600RVAR requirements.
6.How does Aetrix verify that BQ24600RVAR is sourced from the original manufacturer or authorized distributors?
All BQ24600RVAR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BQ24600RVAR meets industry standards.
7.What is the process for return or replacement of BQ24600RVAR?
All BQ24600RVAR units undergo pre-shipment inspection (PSI). If there is an issue with BQ24600RVAR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The BQ24600RVAR part is unused and in its original packaging.
Return procedure for BQ24600RVAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BQ24600RVAR Tags
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Texas Instruments
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