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Texas Instruments BQ25046DQCR
- Part No.:
- BQ25046DQCR
- Manufacturer:
- Texas Instruments
- Category:
- Power Management - Specialized
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
BQ25046DQCR.pdf
- Description:
- IC PWR SUPPLY 5V 1.1A 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,868
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Product details
Overview
BQ25046DQCR from Texas Instruments is a single-input 5-V linear power supply IC designed for wireless power receiver applications, integrating a 5.0 V ±2% regulated LDO output, 3.3 V/15 mA LDO (VDD3.3), 15 V over-voltage protection, and programmable current limiting (100 mA / 400 mA / up to 1.1 A via ISET). It directly powers the MSP430BQ1010 wireless controller and delivers up to 5 W to mobile devices.
For engineers reviewing the BQ25046DQCR datasheet, BQ25046DQCR pinout, BQ25046DQCR application, or BQ25046DQCR equivalent, key selection criteria include input OVP threshold (15 V), thermal regulation behavior (115–135 °C), EN1/EN2 logic-level control interface, integrated current sense for efficiency monitoring, and compatibility with inductive wireless power systems using load modulation.
Technical Context
The BQ25046DQCR implements a linear regulation architecture with an internal pass FET, enabling precise 5.0 V output regulation while providing load disconnect functionality. Its dual-LDO structure supplies both system power (5 V OUT) and controller bias (3.3 V VDD3.3), with independent enable logic via EN1/EN2 and status signaling through open-drain CHG and PG outputs.
Input protection includes 30 V absolute maximum rating, 15 V OVP with 150 µs deglitching, and UVLO at 3.3 V (±150 mV hysteresis). Thermal management features include junction temperature regulation (115–135 °C) and shutdown at 155 °C with 20 °C hysteresis - critical for sustained operation under high VIN and high IOUT conditions in compact wireless receivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage (OUT) | 5.0 V ±2% - ensures stable USB-compatible power delivery to downstream charging circuits without external feedback compensation. |
| Input OVP Threshold | 15.0 V ±0.5 V - protects against voltage surges from faulty adapters or resonant coil transients in inductive wireless power systems. |
| VDD3.3 Output | 3.3 V ±3% @ 15 mA - directly powers MSP430BQ1010 wireless controller without additional regulation or sequencing. |
| Current Limit Options | 100 mA / 400 mA / 1.1 A (via ISET resistor 470–5360 Ω) - enables robust communication during load modulation while supporting full-power delivery. |
| Thermal Regulation Range | 115–135 °C - dynamically reduces current limit before shutdown, maintaining partial functionality during thermal stress. |
| Package Thermal Resistance | θJA = 71.9 °C/W - requires minimal PCB copper area for thermal pad connection to sustain 1.1 A continuous output at ambient ≤60 °C. |
| Logic Input Thresholds | VIL ≤ 0.4 V, VIH ≥ 1.4 V - compatible with standard 3.3 V microcontroller GPIO without level-shifting. |
Pinout & Package
Package: 10-pin WSON (DQC), 2 mm × 3 mm, thermally enhanced with exposed VSS-connected pad. RoHS-compliant, NIPDAU finish, MSL Level-2-260°C-1 year.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pin 1) | Input power supply | Accepts rectified wireless or wired DC input (3.3–26 V); requires ≥10 µF ceramic capacitor for wireless applications to suppress ripple. |
| ISET (Pin 2) | Current limit programming | Resistor-to-ground sets user-programmable current limit (100 mA–1.1 A); short-circuit detection latches off IC after 1.5 ms deglitch. |
| VSS (Pins 3,5) | Ground reference & thermal path | Dual ground pins plus exposed thermal pad - must be connected to PCB ground plane for electrical integrity and thermal dissipation. |
| VDD3.3 (Pin 4) | 3.3 V LDO output | Supplies MSP430BQ1010 directly; active above UVLO regardless of EN1/EN2 state; bypassed with ≥0.1 µF ceramic capacitor. |
| EN1 / EN2 (Pins 6,7) | Mode selection inputs | Set current limit (100 mA / 400 mA / ISET / off); internal 260 kΩ pulldown ensures default safe state on power-up. |
| CHG (Pin 8) | Open-drain enable status | Pulled low when OUT is enabled and within UVLO/OVP window; used for LED indication or microcontroller interrupt signaling. |
| PG (Pin 9) | Open-drain power-good | Asserted low when valid input (3.3–15 V) is present; includes deglitch timing (100–450 µs) to reject transient noise. |
| OUT (Pin 10) | 5 V regulated output | Delivers up to 1.5 A; requires ≥1 µF ceramic capacitor close to pin for loop stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3.3 V / 15 mA LDO | Eliminates need for external regulator to power MSP430BQ1010, reducing BOM count and layout area in space-constrained receivers. |
| Pin-selectable 100 mA / 400 mA current limits | Enables reliable backscatter communication during load modulation without compromising full-power delivery when not communicating. |
| 15 V input over-voltage protection with deglitch | Prevents false triggering from ringing or EMI in wireless rectifier outputs, ensuring uninterrupted operation during transient events. |
| Thermal regulation with hysteresis | Maintains partial functionality (reduced current) instead of hard shutdown, improving system resilience during sustained high-power operation. |
| Soft-start circuitry | Reduces inrush current into output capacitors during power-up, preventing voltage droop on shared rails and avoiding false UVLO trips. |
Applications
| Wireless Power Receiver | Smartphone Charging System |
|---|---|
|
Use Scenario: Receives inductively coupled AC from transmitter coil, rectifies to DC, and regulates to 5 V for battery charging IC. IC Role / Device Role / Timing Role: Primary 5 V LDO regulator and controller bias supply; interfaces with MSP430BQ1010 for closed-loop power optimization. Use Value: Enables full 5 W wireless power delivery with integrated OVP, thermal regulation, and communication-aware current limiting. |
Use Scenario: Powers USB-compatible charging circuitry in smartphones using wireless or wired input sources. IC Role / Device Role / Timing Role: Dual-output linear regulator delivering 5 V system rail and 3.3 V controller rail simultaneously. Use Value: Reduces component count by integrating two LDOs, status outputs, and protection functions in a 2 mm × 3 mm footprint. |
| PDA Power Management | MP3 Player Power Supply |
|
Use Scenario: Supplies regulated 5 V and 3.3 V rails to PDA main processor and wireless controller in portable form factor. IC Role / Device Role / Timing Role: Central power management IC handling input conditioning, output regulation, and status reporting. Use Value: Supports both wired (USB) and wireless input modes with seamless transition and identical protection thresholds. |
Use Scenario: Provides clean, low-noise 5 V power to audio codec and 3.3 V to microcontroller in battery-powered MP3 players. IC Role / Device Role / Timing Role: Linear regulator with ultra-low quiescent current (1 µA in shutdown) to extend battery life. Use Value: Achieves <2% output regulation accuracy and <512 mV dropout at 1 A, minimizing heat generation in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear power supply applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ25040DQCR | Same 10-pin WSON package, but fixed 500 mA current limit and no VDD3.3 LDO output. | Lacks integrated 3.3 V supply for MSP430BQ1010 - requires external LDO and increases BOM count. | Select when only basic 5 V regulation is needed and controller bias is provided externally. |
| BQ25070DQCR | Includes integrated battery charger (Li-ion), higher 2 A output, but no VDD3.3 LDO and different EN logic mapping. | Designed for battery-backed wireless receivers; adds charge termination, safety timers, and battery sensing. | Select when system requires direct Li-ion charging capability and can accommodate revised control interface. |
Compared with BQ25046DQCR, BQ25040DQCR simplifies design where 3.3 V controller supply is already available, while BQ25070DQCR extends functionality to include battery charging - neither offers the exact combination of dual-LDO, programmable current limiting, and wireless-optimized protection found in BQ25046DQCR.
Availability
BQ25046DQCR is available at Aetrix Electronics and suitable for wireless power receivers, smartphone charging subsystems, and low-power handheld device power management requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for BQ25046DQCR 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 company specializing in analog and embedded processing technologies, with leadership in power management, signal chain, and wireless connectivity solutions.
The BQ25046DQCR belongs to TI's wireless power receiver IC product line, engineered specifically to simplify implementation of Qi-compliant and proprietary inductive charging systems with minimal external components and robust fault protection.
FAQ
What is the maximum input voltage the BQ25046DQCR can safely handle?
The BQ25046DQCR has an absolute maximum input voltage rating of 30 V, but its over-voltage protection (OVP) circuit triggers at 15.0 V ±0.5 V to disable the 5 V output. This ensures safe operation in wireless power systems where rectified coil voltages may spike due to load dumps or parasitic coupling. The device remains powered via VDD3.3 during OVP events to maintain controller functionality.
How does the BQ25046DQCR support communication during wireless power transfer?
The BQ25046DQCR supports robust communication by allowing pin-selectable current limiting (100 mA or 400 mA via EN1/EN2) during load modulation phases. This prevents excessive current draw that could distort backscatter signals. When paired with MSP430BQ1010, it enables real-time power negotiation while maintaining stable 5 V output for downstream loads.
Can the BQ25046DQCR operate from a standard USB port?
Yes, the BQ25046DQCR operates from USB 5 V sources. Its input range (3.3–26 V) includes USB voltage, and EN1/EN2 can be configured for 100 mA (USB100) or 400 mA (USB400) current limits - compliant with USB 2.0 specifications. The 2% output regulation and soft-start ensure stable handshake with host controllers and prevent inrush-related enumeration failures.
What thermal considerations apply when using the BQ25046DQCR at 1.1 A output current?
At 1.1 A output and 5 V drop (e.g., VIN = 10 V), power dissipation reaches ~5.5 W. With θJA = 71.9 °C/W, junction temperature rise exceeds safe limits without proper PCB thermal design. Use the exposed thermal pad connected to ≥1 in² copper pour, minimize trace resistance, and consider derating current above ambient 60 °C - thermal regulation will automatically reduce current if TJ exceeds 115 °C.
Is the VDD3.3 output of the BQ25046DQCR always active when input voltage is applied?
Yes, the VDD3.3 output activates whenever VIN exceeds the UVLO threshold (3.3 V ±150 mV) and remains active regardless of EN1/EN2 state or OVP condition. This ensures continuous power to MSP430BQ1010 for system monitoring and recovery - even when the 5 V OUT is disabled due to over-voltage or thermal events. The BQ25046DQCR guarantees 3.3 V ±3% regulation at up to 15 mA load.
BQ25046DQCR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Handheld/Mobile Devices
- Current - Supply:
- 1.1A
- Voltage - Supply:
- 3.3V ~ 9V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-WSON (3x2)
BQ25046DQCR FAQ
1.How can I place an order for BQ25046DQCR through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ25046DQCR 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 BQ25046DQCR reliable?
The price and inventory of BQ25046DQCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ25046DQCR is usually 5 days.
3.What payment methods are accepted for BQ25046DQCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ25046DQCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ25046DQCR?
BQ25046DQCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ25046DQCR 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 BQ25046DQCR?
For technical support, including BQ25046DQCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ25046DQCR requirements.
6.How does Aetrix verify that BQ25046DQCR is sourced from the original manufacturer or authorized distributors?
All BQ25046DQCR 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 BQ25046DQCR meets industry standards.
7.What is the process for return or replacement of BQ25046DQCR?
All BQ25046DQCR units undergo pre-shipment inspection (PSI). If there is an issue with BQ25046DQCR, 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 BQ25046DQCR part is unused and in its original packaging.
Return procedure for BQ25046DQCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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