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IC EC4503ANB3R SOT23-6L E-CMOS
| 附件下載 | |
| 商品名稱 | 300mA High-PSRR Low Dropout Voltage Linear Regulators |
| 訂購數量 | |
| 依數量訂價 | 20 NTD |
| FLYiNG 零件編號 | ICEC4503ANB3RECMOS |
| FLYiNG 庫存現貨 | 5 |
| 製造商 | E-CMOS |
| 製造商零件編號 | EC4503ANB3R |
| 說明 | IC EC4503ANB3R SOT23-6L E-CMOS |
| 無鉛狀態 / RoHS 指令狀態 | RoHS / Halogen Free |
| 訂購數量 | NTD 單價 / PCS |
| 1~9 | 20 |
| 10~99 | 15 |
| 100~2999 | 10 |
| 3000~ | 2 |
| 類別 | 300mA High-PSRR Low Dropout Voltage Linear Regulators |
| 製造 | E-CMOS |
| 零件編號 | EC4503ANB3R |
| 輸入電壓 | -0.3~7 V |
| 功耗 | 內部受限 |
| 封裝／外殼 | SOT23-6L |
| 接面溫度 | 150 °C |
EC4503 White LED Set-up Converter
General Description
EC4503 白光 LED 設置轉換器
一般說明
EC4503 是一款電流模式和固定頻率升壓轉換器，具有集成 N-FET 以驅動白光 LED。
串聯連接允許 LED 電流相同，以實現均勻的亮度。其 NFET 的低導通電阻和低反饋電壓降低了功率損耗並實現了高效率。快速開關頻率（典型值為 1.5MHz）允許使用小尺寸電感器以及輸入和輸出電容器。過壓保護功能通過 OVP 引腳監控輸出電壓，如果 OVP 電壓超過過壓閾值，則停止 IC 的開關。內部軟啟動電路消除了啟動期間的浪湧電流。
EC4503 還集成了欠壓鎖定、過熱保護和電流限制電路，以在異常情況下保護 IC。
EC4503 採用 SOT-23-6 封裝。
特徵
General Description
The EC4503 is a current-mode and fixed frequency Boost converter with an integrated N-FET to drive white LEDs.
The series connection allows the LED current to be identical for uniform brightness. Its low on-resistance of NFET and low feedback voltage reduce power loss and achieve high efficiency. Fast switching frequency (1.5MHz typical) allows using small size inductor and both of input and output capacitors. An over voltage protection function, which monitors the output voltage via OVP pin,stops switching of the IC if the OVP voltage exceeds the over voltage threshold. An internal soft-start circuit eliminates the inrush current during start-up.
The EC4503 also integrates under-voltage lockout, Overtemperature protection, and current limit circuits to Protect the IC in abnormal conditions.
The EC4503 is available in a SOT-23-6 packages.
The series connection allows the LED current to be identical for uniform brightness. Its low on-resistance of NFET and low feedback voltage reduce power loss and achieve high efficiency. Fast switching frequency (1.5MHz typical) allows using small size inductor and both of input and output capacitors. An over voltage protection function, which monitors the output voltage via OVP pin,stops switching of the IC if the OVP voltage exceeds the over voltage threshold. An internal soft-start circuit eliminates the inrush current during start-up.
The EC4503 also integrates under-voltage lockout, Overtemperature protection, and current limit circuits to Protect the IC in abnormal conditions.
The EC4503 is available in a SOT-23-6 packages.
Features
- Wide Input Voltage from 2.7V to 6V
- 0.2V Reference Voltage
- Fixed 1.5MHz Switching Frequency
- PWM Brightness Control with Wide Frequency Range of 100Hz to 100kHz
- Build‐In Power MOSFET : 0.2Ω
- Open‐LED Protection
- Under‐Voltage Lockout Protection
- Over‐Temperature Protection
- <1mA Quiescent Current during Shutdown
- SOT‐23‐6 Packages
- Lead Free and Green Devices Available
- (RoHS Compliant)
Applications
- White LED Display Backlighting
- Cell Phone and Smart Phone
- PDA, PMP, MP3
- Digital Camera
EC4503 白光 LED 設置轉換器
一般說明
EC4503 是一款電流模式和固定頻率升壓轉換器，具有集成 N-FET 以驅動白光 LED。
串聯連接允許 LED 電流相同，以實現均勻的亮度。其 NFET 的低導通電阻和低反饋電壓降低了功率損耗並實現了高效率。快速開關頻率（典型值為 1.5MHz）允許使用小尺寸電感器以及輸入和輸出電容器。過壓保護功能通過 OVP 引腳監控輸出電壓，如果 OVP 電壓超過過壓閾值，則停止 IC 的開關。內部軟啟動電路消除了啟動期間的浪湧電流。
EC4503 還集成了欠壓鎖定、過熱保護和電流限制電路，以在異常情況下保護 IC。
EC4503 採用 SOT-23-6 封裝。
特徵
- 2.7V 至 6V 的寬輸入電壓
- 0.2V 參考電壓
- 固定 1.5MHz 開關頻率
- 具有 100Hz 至 100kHz 寬頻率範圍的 PWM 亮度控制
- 內置功率 MOSFET：0.2Ω
- LED 開路保護
- 欠壓鎖定保護
- 過溫保護
- <1mA 停機期間的靜態電流
- SOT-23-6 封裝
- 提供無鉛和綠色設備
- （符合 RoHS 標準）
- 白光LED顯示屏背光
- 手機和智能手機
- 掌上電腦，PMP，MP3
- 數碼相機
