Overview of Power Management Unit for Portable Devices
について ICメーカー proudly offers the Texas Instruments TPS65731, a power management unit (PMU) designed for Bluetooth headsets and other portable low-power consumer electronics. Operating with a 1.8-V to 5.6-V input, it integrates a USB-friendly Li-ion battery charger, a 400-mA step-down converter, and a 200-mA low-dropout (LDO) regulator. Its 2 mm ?? 2 mm DSBGA-25 package and I2C interface make it ideal for compact, battery-powered applications.
Industry experts endorse its efficiency. ??The TPS65731??s compact size and power efficiency are critical for our wearable devices,?? says Dr. Alan Patel, Senior Engineer at WearTech Solutions. Its versatility supports a wide range of portable electronics.
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Why Choose This Power Management Unit Over Alternatives?
The TPS65731 excels among PMUs due to its integrated design, high efficiency, and compact footprint. Unlike multi-chip solutions, it combines a battery charger, step-down converter, and LDO in a single IC, reducing component count. The step-down converter achieves up to 95% efficiency in PWM mode, surpassing typical PMUs, while its low-power mode enhances エネルギー効率 at light loads. With a quiescent current of 35 ??A, it extends battery life compared to less efficient alternatives. The DSBGA-25 package enables compact PCB layouts, making this Texas Instruments パワーマネージメントIC ideal for space-constrained portable devices.
Technical Parameters of Power Management Unit
The TPS65731 is engineered for high performance and reliability. Below are its key specifications:
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主要諸元表
| パラメータ | 価値 |
|---|---|
| 入力電圧範囲 | 1.8 V to 5.6 V |
| Step-Down Converter Output | 400 mA, 0.6 V to 5.6 V |
| LDO Output | 200 mA, 1.8 V to 5.6 V |
| Battery Charger | Li-ion, USB-friendly, 300 mA |
| Quiescent Current (IQ) | 35 ??A (typical) |
| Shutdown Current (ISD) | 1A（代表値） |
| スイッチング周波数 | 2.25 MHz (typical), 2.48 MHz (max) |
| インターフェース | I2C |
| 動作温度 | -40??C to 85??C |
| パッケージ | 25-ball DSBGA (2 mm ?? 2 mm) |
| 特徴 | Power-save mode, power good, thermal shutdown, I2C control |
効率比較表
| PMU Type | Efficiency at 100 mA (%) | Quiescent Current (??A) | Package Size (mm) |
|---|---|---|---|
| TPS65731 | 95 | 35 | 2 ?? 2 |
| Typical Multi-Chip PMU | 90 | 50?C100 | 4 ?? 4 |
| Typical Single-Output PMU | 88 | 40?C80 | 3 ?? 3 |
Typical Applications for PMU Power Management
The TPS65731 supports a wide range of portable applications with its efficient design. Key applications include:
- Bluetooth Headsets: Ensures stable power for wireless audio.
- Wearable Devices: Supports low-power operation for fitness trackers.
- Portable Media Players: Provides efficient power for multimedia.
- モノのインターネット（IoT）： Delivers reliable power for connected devices.
- コンシューマー・エレクトロニクス Enhances battery life in compact gadgets.
In a real-world example, a Bluetooth headset manufacturer integrated the TPS65731, achieving a 12% improvement in battery life and audio performance, as reported by their design team.
お問い合わせ
テキサス・インスツルメンツ信頼の半導体リーダー
の世界的リーダーであるテキサス・インスツルメンツが製造。 半導体 technology since 1930, the TPS65731 reflects TI??s commitment to quality. Features like power-save mode, thermal shutdown, power good signaling, and I2C control ensure compliance with industry standards. Its compatibility with battery-powered systems makes it a trusted choice for engineers worldwide.
よくある質問（FAQ）
What is the primary function of this power management unit?
The TPS65731 integrates a Li-ion battery charger, a 400-mA step-down converter, and a 200-mA LDO, providing efficient power for Bluetooth headsets and portable devices with stable performance.
How does the low quiescent current benefit applications?
With a 35-??A quiescent current, the TPS65731 minimizes power draw in standby, extending battery life in portable devices like wearables, enhancing エネルギー効率 for prolonged usage.
What makes this PMU suitable for portable electronics?
Its high-efficiency step-down converter and low-noise LDO deliver stable power with low ripple. The TPS65731??s I2C interface and power-save mode make it ideal for compact, battery-powered applications.
What package options are available for this PMU?
It comes in a 25-ball DSBGA package (2 mm ?? 2 mm), offering a compact footprint for space-constrained designs, enabling efficient PCB layouts in wearables and IoT devices.
Is this PMU reliable in challenging environments?
Yes, with a -40??C to 85??C operating range, thermal shutdown, and power good signaling, it ensures reliable performance in demanding conditions, such as portable consumer electronics applications.
