My Inquiry
My Account
Texas Instruments BQ24151AYFFR
- Part No.:
- BQ24151AYFFR
- Manufacturer:
- Texas Instruments
- Category:
- Battery Chargers
- Package:
- 20-UFBGA, DSBGA
- Datasheet:
-
BQ24151AYFFR.pdf
- Description:
- IC BATT CHG LI-ION 1CELL 20DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,162
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
BQ24151AYFFR from Texas Instruments is a fully integrated, I²C-programmable, synchronous switch-mode single-cell Li-ion/Li-polymer battery charger with USB compliance and USB-OTG boost capability. It delivers up to 1.25-A charge current, regulates charge voltage to ±0.5% at 25°C (3.5–4.44 V range), and supports 5.05-V/200-mA VBUS output in boost mode for portable devices requiring compact, high-efficiency power management.
For engineers reviewing the BQ24151AYFFR datasheet, BQ24151AYFFR pinout, BQ24151AYFFR application, or BQ24151AYFFR equivalent, key selection criteria include its 20-pin WCSP package, 3-MHz fixed-frequency PWM controller, ±5% input current regulation accuracy, thermal regulation at ~125°C, and automatic high-impedance mode-critical for low-power mobile system design.
Technical Context
The BQ24151AYFFR operates in three primary modes: charge (CC/CV with conditioning), boost (VBUS generation from battery), and high-impedance (ultra-low quiescent current). Its architecture integrates synchronous N-MOSFETs (top reverse-blocking, top switching, bottom), internal current sensing, and dual-loop control (input current + charge current/voltage) managed via I²C interface.
It features a 3-MHz voltage-mode PWM controller with feed-forward, Type-III internal compensation, 0%–99.5% duty cycle range, and robust protection including input/output OVP, thermal shutdown at 165°C, short-circuit detection (VSHORT = 2.0 V), and reverse leakage prevention-enabling reliable operation in space-constrained USB-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Charge Voltage Range | 3.5 V to 4.44 V; programmable via I²C for precise Li-ion cell termination |
| Max Charge Current | 1.25 A; enables fast charging while maintaining thermal safety with junction temp regulation |
| Input Current Accuracy | ±5%; ensures strict USB port compliance under variable source conditions | VBUS Boost Output | 5.05 V ±3%; powers USB OTG peripherals directly from battery without external DC-DC |
| Oscillator Frequency | 3 MHz ±10%; allows small external components and minimizes EMI in dense layouts |
| Operating Temp Range | –40°C to +85°C ambient; validated for smartphone and handheld device thermal envelopes |
| Package | 20-pin WCSP (1.976 mm × 1.946 mm); ultra-compact footprint for thin mobile PCBs |
Pinout & Package
Package: 20-pin Wafer Chip Scale Package (WCSP), 1.976 mm × 1.946 mm, 0.5-mm pitch, bottom-side solder balls.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VBUS (A1, A2) | Input power supply | Accepts 4–6 V USB/adapter input; requires 1-µF ceramic bypass to PGND |
| PMID (B1–B3) | Power mid-rail node | Connection between reverse-blocking and high-side MOSFETs; bypass with ≥3.3-µF capacitor |
| SW (C1–C3) | Switch node | Drives external inductor; connects to BOOT capacitor and internal low-side MOSFET |
| STAT (C4) | Status output | Open-drain indicator: low during charge, 128-ms pulse during fault, disableable via I²C |
| SCL (A4), SDA (B4) | I²C interface | Open-drain bus lines; require 10-kΩ pull-ups to 1.8-V rail for host communication |
| OTG (D4) | Mode control input | Hardware-selectable input current limit (100/500 mA) or OTG enable; higher priority than I²C |
| CSIN (E1), CSOUT (E4) | Current sense inputs | Differential pair measuring voltage across external 68-mΩ sense resistor for charge current control |
| AUXPWR (E2) | Battery pack connection | Direct connection to single-cell Li-ion anode; powers internal circuitry in high-Z mode |
| VREF (E3) | Bias regulator output | 6.5-V internal reference; requires 1-µF bypass cap; no external load permitted |
| BOOT (A3) | Gate drive bootstrap | Connects 10-nF ceramic capacitor to SW for high-side MOSFET gate drive |
| PGND (D1–D3) | Power ground | High-current return path for SW, PMID, and CSIN/CSOUT; must be low-inductance plane |
Key Features
| Feature | Design Value |
|---|---|
| Automatic High-Impedance Mode | Enables <5-mA total system standby current when VBUS removed-eliminates need for external load switch |
| USB-OTG Boost Operation | Generates regulated 5.05-V/200-mA VBUS from 2.5–4.5-V battery-supports plug-and-play peripheral attachment |
| Programmable Safety Timer | Configurable 32-minute or 32-second timeout prevents overcharge during firmware hangs or communication loss |
| Thermal Regulation | Reduces charge current above ~125°C junction temperature-maintains safe operation without external thermal sensors |
| Reverse Leakage Protection | Blocks battery discharge through VBUS path when input is absent-preserves battery life in disconnected state |
Applications
| Smartphone Power Management | USB OTG Peripheral Hub |
|---|---|
Use Scenario: Integrated battery charging and VBUS power delivery in slim smartphones with USB-C or micro-USB ports. IC Role / Device Role / Timing Role: Primary Li-ion charger and bidirectional power manager handling CC/CV charge, thermal foldback, and OTG boost on demand. Use Value: Eliminates separate boost IC and reduces BOM count by integrating MOSFETs, current sensing, and I²C control in 20-pin WCSP. | Use Scenario: Portable media player acting as USB host for keyboards, flash drives, or audio interfaces. IC Role / Device Role / Timing Role: Provides stable 5.05-V VBUS from battery during OTG sessions while monitoring battery voltage and current. Use Value: Delivers 200-mA compliant VBUS without external regulators-enables true plug-and-play OTG without firmware intervention. |
| MP3 Player Battery System | Handheld Diagnostic Tool |
Use Scenario: Compact audio player requiring fast recharge from USB ports and extended playback time from single-cell Li-polymer. IC Role / Device Role / Timing Role: Manages full charge profile (preconditioning, CC, CV, termination) and enters high-Z mode during sleep to minimize self-discharge. Use Value: Achieves ±0.5% voltage accuracy and ±5% current accuracy-ensures consistent capacity utilization and cycle life. | Use Scenario: Field-deployable medical or industrial tool powered by rechargeable battery and used intermittently over weeks. IC Role / Device Role / Timing Role: Maintains ultra-low quiescent current (<5 mA) in high-impedance mode while retaining I²C configurability for rapid wake-up. Use Value: Extends shelf life and operational readiness-no external enable logic or power sequencing required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-cell Li-ion charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BQ24150AYFFR | Identical pinout and electrical specs; differs only in default behavior at power-on-enables automatic charging (no host I²C required) | Preferred where firmware cannot initialize I²C early; lacks BQ24151AYFFR's mandatory host control for charge start | Select BQ24150AYFFR if autonomous charging is needed; BQ24151AYFFR requires I²C command to begin charge |
| BQ25120AYFFT | Smaller 12-pin DSBGA; integrates LDO and buck converter; lower max charge current (500 mA); different I²C register map | Targets ultra-low-power wearables; not drop-in-requires layout and firmware changes due to different pin count and feature set | Choose BQ25120AYFFT only for new designs prioritizing size and multi-rail integration over high-current charging |
Compared with BQ24151AYFFR, BQ24150AYFFR offers identical hardware but automatic startup-ideal for simpler systems-while BQ25120AYFFT trades charge current and pin compatibility for integrated power rails and smaller footprint in next-gen wearables.
Availability
BQ24151AYFFR is available at Aetrix Electronics and suitable for smartphone power management, USB OTG peripheral hubs, MP3 player battery systems, and handheld diagnostic tools requiring stable component supply and long-term manufacturability.
Supply support for BQ24151AYFFR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The BQ24151AYFFR belongs to TI's battery management IC portfolio, designed specifically for space-constrained, USB-compliant portable devices needing integrated charging, OTG boost, and intelligent thermal/power control.
FAQ
What is the key functional difference between BQ24151AYFFR and BQ24150AYFFR?
The BQ24151AYFFR requires explicit I²C command to initiate charging and defaults to high-impedance mode at power-on, whereas the BQ24150AYFFR automatically begins charging upon valid VBUS detection. Both share identical pinout, electrical specs, and WCSP-20 package-making them hardware-compatible but firmware-behavior-differentiated variants of the same silicon.
Does BQ24151AYFFR support USB 2.0 compliance for current limiting?
Yes, the BQ24151AYFFR supports USB 2.0 current-limiting requirements with ±5% input current regulation accuracy and programmable limits of 100 mA or 500 mA via the OTG pin or I²C register. It also includes deglitch timing (30 ms) and hysteresis (100–200 mV) to prevent false triggering during transient USB port events.
What is the maximum continuous VBUS input voltage the BQ24151AYFFR can withstand?
The BQ24151AYFFR has an absolute maximum VBUS rating of 20 V per datasheet SLUS931A, though it is rated for continuous operation up to 6 V. It can withstand 10.6 V continuously and 20 V for a minimum of 432 hours-providing robustness against USB adapter overvoltage faults without external protection.
How does thermal regulation work in BQ24151AYFFR during charging?
The BQ24151AYFFR monitors its junction temperature and begins reducing charge current when TJ reaches approximately 125°C. This regulation is automatic and independent of I²C commands, ensuring safe operation under high ambient temperatures or poor PCB thermal design-without requiring external thermal sensors or host intervention.
Can BQ24151AYFFR operate without an external current-sense resistor?
No, the BQ24151AYFFR requires an external 68-mΩ sense resistor between CSIN and CSOUT to measure battery charge current. The device reads the differential voltage across this resistor (VIREG = ICHARGE × 68 mΩ) for closed-loop current control-omitting it disables fast-charge regulation and triggers fault conditions.
BQ24151AYFFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 20-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Battery Chemistry:
- Lithium Ion/Polymer
- Number of Cells:
- 1
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Current, Timer, Voltage
- Fault Protection:
- Over Temperature, Over Voltage
- Charge Current - Max:
- 1.25A
- Battery Pack Voltage:
- 4.44V (Max)
- Voltage - Supply (Max):
- 6V
- Interface:
- I2C
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DSBGA
BQ24151AYFFR FAQ
1.How can I place an order for BQ24151AYFFR through Aetrix?
Please submit a Request for Quotation (RFQ) for BQ24151AYFFR 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 BQ24151AYFFR reliable?
The price and inventory of BQ24151AYFFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BQ24151AYFFR is usually 5 days.
3.What payment methods are accepted for BQ24151AYFFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BQ24151AYFFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BQ24151AYFFR?
BQ24151AYFFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BQ24151AYFFR 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 BQ24151AYFFR?
For technical support, including BQ24151AYFFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BQ24151AYFFR requirements.
6.How does Aetrix verify that BQ24151AYFFR is sourced from the original manufacturer or authorized distributors?
All BQ24151AYFFR 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 BQ24151AYFFR meets industry standards.
7.What is the process for return or replacement of BQ24151AYFFR?
All BQ24151AYFFR units undergo pre-shipment inspection (PSI). If there is an issue with BQ24151AYFFR, 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 BQ24151AYFFR part is unused and in its original packaging.
Return procedure for BQ24151AYFFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BQ24151AYFFR Tags
-
BQ21040DBVR
Texas Instruments
-
MCP73812T-420I/OT
Microchip Technology
-
MCP73831T-2ACI/OT
Microchip Technology
-
MCP73832T-2ACI/OT
Microchip Technology
-
MCP73831T-2DCI/OT
Microchip Technology
-
MCP73832T-2DCI/OT
Microchip Technology
-
MCP73831T-2ATI/OT
Microchip Technology
-
MCP73832T-2ATI/OT
Microchip Technology
-
MCP73831T-5ACI/OT
Microchip Technology
-
MCP73832T-2ACI/MC
Microchip Technology
-
MCP73831T-2ACI/MC
Microchip Technology
-
MCP73831T-2ATI/MC
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
