Nuvoton Technology Corporation NAU8315B31VG
| Quantity | Unit Price | Total Price |
|---|---|---|
| 1 | Dhs. 1.46 | Dhs. 1.46 |
| 15+ | Dhs. 1.42 | Dhs. 21.30 |
| 25+ | Dhs. 1.39 | Dhs. 34.75 |
| 50+ | Dhs. 1.31 | Dhs. 65.50 |
| 100+ | Dhs. 1.16 | Dhs. 116.00 |
| N+ | Dhs. 0.23 | Price Inquiry |
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| Product attributes | Property Value |
| Manufacturer | Nuvoton Technology Corporation |
| Product Series | |
| Packaging | Tape & Reel (TR) | |
| Part Status | Active |
| Type | Class D |
| Output Type | 1-Channel (Mono) |
| Max Output Power x Channels @ Load | 1.8W x 1 @ 8Ohm; 3.2W x 1 @ 4Ohm |
| Voltage - Supply | 2.5V ~ 5.25V |
| Features | - |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C |
| Grade | - |
| Qualification | - |
| Supplier Device Package | 12-WLCSP (1.95x1.118) |
| Package / Case | 12-UFBGA, WLCSP |
| ROHS |
The NAU8315B31VG is a mono Class D audio amplifier IC designed for space-constrained portable applications. Operating from 2.5V to 5.25V, it delivers up to 3.2W into 4Ω loads with high efficiency. Packaged in an ultra-compact 12-WLCSP measuring just 1.95x1.118mm, this amplifier is ideal for smartphones, wearables, and IoT devices where small size and low power consumption are essential. Its wide operating temperature range ensures reliable performance in diverse environments.
- Ultra-Miniature Package: The 12-WLCSP (1.95x1.118mm) enables integration into the smallest devices.
- High Output Power: Delivers 3.2W into 4Ω, sufficient for clear audio in portable products.
- Wide Voltage Range: 2.5V to 5.25V supports single-cell lithium batteries and USB power.
- Class D Efficiency: Minimizes heat and extends battery life in continuous use.
Smartphone Speaker Amplifier
The tiny 1.95x1.118mm WLCSP package and 3.2W output into 4Ω make the NAU8315B31VG ideal for driving the internal speaker in smartphones with minimal board space.
Tablet or E-Reader Audio
Its low 2.5V minimum supply allows direct battery connection, providing clear mono audio for tablets and e-readers without additional voltage regulation.
Wearable Device Speaker
The ultra-small footprint enables integration into smartwatches or fitness trackers for voice prompts and alerts.
Portable Medical Monitor
Reliable operation over -40°C to 85°C makes it suitable for medical devices requiring audio alarms or voice guidance.
IoT Voice Assistant
Class D efficiency extends battery life in smart home sensors or IoT devices with voice output capabilities.
Single-Cell Bluetooth Earbud Charging Case
Its small size and low voltage operation allow it to be used for audio feedback in charging cases.
| Model | Package | Voltage Range | Output Power (Typical) |
|---|---|---|---|
| PAM8009KGR | U-QFN4040-20 | 2.8V ~ 5.5V | 3W x 2 @ 4Ω |
| PAM8404ZER | 16-WCSP (1.95x1.95) | 2.5V ~ 5.5V | 3W x 2 @ 4Ω |
| NAU8315B31VG | 12-WLCSP (1.95x1.118) | 2.5V ~ 5.25V | 3.2W x 1 @ 4Ω |
- Q: What is the supply voltage range for the NAU8315B31VG?
- A: It operates from 2.5V to 5.25V, suitable for battery-powered mono audio applications.
- Q: What output power can it deliver?
- A: It provides 3.2W into 4Ω or 1.8W into 8Ω loads in mono configuration.
- Q: What package is this IC available in?
- A: It comes in a 12-WLCSP package measuring 1.95x1.118mm, ideal for ultra-compact designs.
- Q: Is the NAU8315B31VG a Class D amplifier?
- A: Yes, it is a Class D amplifier, offering high efficiency for portable devices.
- Q: What are typical applications for this chip?
- A: It is commonly used in smartphones, tablets, and other portable devices requiring a small mono amplifier.
- Q: What is the supply voltage range for the NAU8315B31VG?
- A: It operates from 2.5V to 5.25V, suitable for battery-powered mono audio applications.
- Q: What output power can it deliver?
- A: It provides 3.2W into 4Ω or 1.8W into 8Ω loads in mono configuration.
- Q: What package is this IC available in?
- A: It comes in a 12-WLCSP package measuring 1.95x1.118mm, ideal for ultra-compact designs.
- Q: Is the NAU8315B31VG a Class D amplifier?
- A: Yes, it is a Class D amplifier, offering high efficiency for portable devices.
- Q: What are typical applications for this chip?
- A: It is commonly used in smartphones, tablets, and other portable devices requiring a small mono amplifier.

NAU8315B31VG.pdf