Richtek USA Inc. RT9451GQW
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | $5.16 | $5.16 |
| 15+ | $5.00 | $75.00 |
| 25+ | $4.89 | $122.25 |
| 50+ | $4.62 | $231.00 |
| 100+ | $4.07 | $407.00 |
| N+ | $0.81 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Richtek USA Inc. |
| Product Series | |
| Packaging | Cut Tape (CT) | Tape & Reel (TR) |
| Battery Chemistry | Lithium Ion/Polymer |
| Number of Cells | 1 |
| Current - Charging | Constant - Programmable |
| Programmable Features | Current, Timer |
| Fault Protection | Over Temperature, Over Voltage |
| Charge Current - Max | 4A |
| Battery Pack Voltage | 4.44V (Max) |
| Voltage - Supply (Max) | 12V |
| Interface | I2C, USB |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 32-WFQFN Exposed Pad |
| Supplier Device Package | 32-WQFN (4x4) |
| ROHS |  |
The RT9451GQW is a high-performance single-cell switching charger for Lithium Ion/Polymer batteries. It delivers up to 4A of charge current and supports a maximum battery voltage of 4.44V. Featuring I2C and USB interfaces, it enables flexible system integration and precise control. Built-in Over Temperature and Over Voltage protection ensures safe operation across a wide temperature range. This charger is well-suited for fast-charging portable devices, power banks, and industrial handheld equipment.
- Fast Charging: 4A maximum charge current significantly reduces charging time for high-capacity batteries.
- Flexible Control: I2C and USB interfaces allow for dynamic charging parameter adjustments and system communication.
- Robust Protection: Over Temperature and Over Voltage safeguards enhance system reliability and battery lifespan.
- Wide Temperature Operation: Rated from -40°C to 85°C, it is suitable for industrial and outdoor applications.
High-Capacity Portable Electronics
With a 4A charge current, the RT9451GQW is ideal for tablets and large power banks that require fast replenishment of high-capacity Lithium Ion/Polymer cells.
USB-Powered Devices
The integrated USB interface allows for seamless charging from standard USB ports, making it suitable for consumer gadgets that prioritize universal connectivity.
Smartphones and Phablets
Its single-cell support and I2C control enable precise charging profiles for modern smartphones, ensuring safe and efficient power management.
Industrial Handheld Terminals
Rated for -40°C to 85°C, this IC can be deployed in rugged handheld scanners and field devices used in demanding environments.
Compact IoT Modules
The 32-WFQFN package is space-efficient, making it a fit for space-constrained IoT sensors and wearables that need high-current charging in a small footprint.
- Q: What battery chemistry does the RT9451GQW support?
- A: The RT9451GQW is designed for Lithium Ion/Polymer batteries.
- Q: How many battery cells can this charger handle?
- A: It supports a single-cell (1) configuration.
- Q: What is the maximum charge current?
- A: The maximum charge current is 4A.
- Q: What is the maximum battery pack voltage?
- A: The maximum battery pack voltage is 4.44V.
- Q: What fault protection features are included?
- A: It includes Over Temperature and Over Voltage protection.
- Q: What interface and package does it use?
- A: It features I2C and USB interfaces and comes in a 32-WFQFN Exposed Pad package.
RT9451GQW.pdf
- Q: What battery chemistry does the RT9451GQW support?
- A: The RT9451GQW is designed for Lithium Ion/Polymer batteries.
- Q: How many battery cells can this charger handle?
- A: It supports a single-cell (1) configuration.
- Q: What is the maximum charge current?
- A: The maximum charge current is 4A.
- Q: What is the maximum battery pack voltage?
- A: The maximum battery pack voltage is 4.44V.
- Q: What fault protection features are included?
- A: It includes Over Temperature and Over Voltage protection.
- Q: What interface and package does it use?
- A: It features I2C and USB interfaces and comes in a 32-WFQFN Exposed Pad package.
