| FLYiNG 零件編號 | ICLM2734XMK/NOPBTI |
| FLYiNG 庫存現貨 | 電洽/Contact |
| 製造商 | TEXAS INSTRUMENTS |
| 製造商零件編號 | LM2734XMK/NOPB |
| 說明 | LM2734XMK/NOPB SOT-23-THIN-6 TI |
| 無鉛狀態 / RoHS 指令狀態 | RoHS |
| 邏輯類型 | 降壓 切換式穩壓器 |
| 系列 | LM2734 |
| 原廠料號 | LM2734XMK/NOPB |
| 輸出數 | 1 |
| 輸入電壓 | 3V ~ 20V |
| 輸出電壓 | 0.8~18V |
| 輸出電流 | 1A |
| 安裝類型 | SMD表面黏著式 |
| 工作溫度 | -40°C ~ 125°C (TJ) |
| 封裝／外殼 | SOT-23-THIN-6 |
| 標準包裝數量 | 1000/Reel |
文件:LM2734.png)
LM2734
Thin SOT 1-A Load Step-Down DC/DC Regulator
Features
The LM2734 regulator is a monolithic, high-frequency, PWM step-down DC/DC converter in a 6- pin Thin SOT package. The device provides all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation
in the smallest possible PCB area.
With a minimum of external components and online design support through WEBENCH, the LM2734 regulator is easy to use. The ability to drive 1-A loads with an internal 300-mΩ NMOS switch using state-of- the-art 0.5-μm BiCMOS technology results in the best power density available. The world-class control circuitry allows for on-times as low as 13 ns, thus supporting exceptionally high-frequency conversion over the entire 3-V to 20-V input operating range down to the minimum output voltage of 0.8 V. Switching frequency is internally set to 550 kHz (LM2734Y) or 1.6 MHz (LM2734X), allowing the use of extremely small surface-mount inductors and chip capacitors. Even though the operating frequencies are very high, efficiencies up to 90% are easy to
achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA.
The LM2734 regulator uses current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.
LM2734
Thin SOT 1-A Load Step-Down DC/DC Regulator
Features
- Thin SOT-6 Package
- 3-V to 20-V Input Voltage Range
- 0.8-V to 18-V Output Voltage Range
- 1-A Output Current
- 550-kHz (LM2734Y) and 1.6-MHz (LM2734X) Switching Frequencies
- 300-mΩ NMOS Switch
- 30-nA Shutdown Current
- 0.8-V, 2% Internal Voltage Reference
- Internal Soft Start
- Current-Mode, PWM Operation
- Thermal Shutdown
- Create a Custom Design Using the LM2734 With WEBENCH® Power Designer
- Local Point-of-Load Regulation
- Core Power in HDDs
- Set-Top Boxes
- Battery-Powered Devices
- USB Powered Devices
- DSL Modems
- Notebook Computers
The LM2734 regulator is a monolithic, high-frequency, PWM step-down DC/DC converter in a 6- pin Thin SOT package. The device provides all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation
in the smallest possible PCB area.
With a minimum of external components and online design support through WEBENCH, the LM2734 regulator is easy to use. The ability to drive 1-A loads with an internal 300-mΩ NMOS switch using state-of- the-art 0.5-μm BiCMOS technology results in the best power density available. The world-class control circuitry allows for on-times as low as 13 ns, thus supporting exceptionally high-frequency conversion over the entire 3-V to 20-V input operating range down to the minimum output voltage of 0.8 V. Switching frequency is internally set to 550 kHz (LM2734Y) or 1.6 MHz (LM2734X), allowing the use of extremely small surface-mount inductors and chip capacitors. Even though the operating frequencies are very high, efficiencies up to 90% are easy to
achieve. External shutdown is included, featuring an ultra-low standby current of 30 nA.
The LM2734 regulator uses current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output overvoltage protection.
LM2734
超薄 SOT 封裝 1A 降壓型 DC/DC 穩壓器
產品描述
LM2734 是一款單片高頻 PWM 降壓型 DC/DC 轉換器，採用 6 引腳 Thin SOT 封裝。該元件提供所有必要的功能，可在最小 PCB 面積內實現快速瞬態響應與高精度穩壓。透過最少的外部元件與線上設計工具 WEBENCH®，LM2734 可輕鬆完成電源設計。
該裝置內建 300mΩ NMOS 開關，採用先進的 0.5μm BiCMOS 技術，可驅動 1A 負載並提供高功率密度。其高效控制電路可實現 13ns 超低導通時間，支援 3V 至 20V 輸入範圍內的高頻轉換，最低輸出電壓可達 0.8V。內部開關頻率固定為 550kHz（LM2734Y） 或 1.6MHz（LM2734X），可搭配極小型貼片電感與晶片電容。即使在高頻運作下，仍能輕鬆達成 高達 90% 的效率。
此外，LM2734 具備外部關斷功能，待機電流僅 30nA，並採用電流模式控制與內部補償，確保在各種條件下維持高性能穩壓。內建功能包括 軟啟動、逐週期電流限制、熱關斷與輸出過壓保護，進一步提升穩定性與安全性。
特性
- 封裝：6 引腳 Thin SOT-6
- 輸入電壓範圍：3V 至 20V
- 輸出電壓範圍：0.8V 至 18V
- 輸出電流：最高 1A
- 開關頻率：
- LM2734Y：550kHz
- LM2734X：1.6MHz
- 內建 300mΩ NMOS 開關
- 超低關斷電流：30nA
- 內建 0.8V（±2%）基準電壓
- 內建軟啟動功能
- 電流模式 PWM 控制
- 熱關斷保護
應用領域
- 局部負載點穩壓（POL）
- 硬碟核心電源（HDD）
- 機上盒（STB）
- 電池供電裝置
- USB 供電設備
- DSL 數據機
- 筆記型電腦
