圖片僅供參考
| FLYiNG 零件編號 | ICEAP8344M8RAiT |
| FLYiNG 散料庫存 | 5 |
| FLYiNG 標準包裝庫存 | 電洽/Contact |
| 製造商/品牌商 | AiT Semiconductor Inc. |
| 製造商/品牌商零件編號 | AP8344M8R |
| 說明 | IC AP8344M8R SOP8 AiT |
| 無鉛狀態 / RoHS 指令狀態 | RoHS |
| 類別 | PWM CONTROLLER HIGH PERFORMANCE CURRENT MODE PWM CONTROL CIRCUITS |
| 系列 | AP8344 |
| 原廠料號 | AP8344M8R |
| 切換模式 | PWM |
| 輸入電壓 | 2.5V |
| 輸出電壓 | 5V |
| 輸出電流 | ±1A |
| 頻率 | 500kHz |
| 儲存溫度 | -65°C ~ 150°C |
| 工作溫度 | 150°C |
| 封裝／外殼 | SOP8 |
| 安裝類型 | SMD 表面黏著式 |
| 無鉛狀態 RoHS | RoHS |
| 標準包裝數量 | 4000/Reel 捲軸 |
文件:AP8344.png)
AP8344
PWM CONTROLLER HIGH PERFORMANCE CURRENT MODE PWM CONTROL CIRCUITS
DESCRIPTION
The AP8344 provides the necessary features to
implement AC-DC or DC-to-DC fixed frequency
current-mode control schemes with a minimum
number of external components.
Protection circuitry includes undervoltage lockout
(UVL) and current limiting. Internally
implemented circuits include under-voltage lockout
featuring start up current less than 0.5mA, a
precision reference trimmed for accuracy at the
error amp input, logic to ensure latched operation,
a PWM comparator which also provides current
limit control, and a totem pole output stage
designed to source or sink high peak current. The
output stage, suitable for driving N channel
MOSFETs, is low in the off state.
The AP8344 is available in DIP8 and SOP8
Packages.
FEATURES
APPLICATION
AP8344
PWM CONTROLLER HIGH PERFORMANCE CURRENT MODE PWM CONTROL CIRCUITS
DESCRIPTION
The AP8344 provides the necessary features to
implement AC-DC or DC-to-DC fixed frequency
current-mode control schemes with a minimum
number of external components.
Protection circuitry includes undervoltage lockout
(UVL) and current limiting. Internally
implemented circuits include under-voltage lockout
featuring start up current less than 0.5mA, a
precision reference trimmed for accuracy at the
error amp input, logic to ensure latched operation,
a PWM comparator which also provides current
limit control, and a totem pole output stage
designed to source or sink high peak current. The
output stage, suitable for driving N channel
MOSFETs, is low in the off state.
The AP8344 is available in DIP8 and SOP8
Packages.
FEATURES
- Optimized for Off-Line and DC to DC Converts
- Low Start Up Current(<0.5mA)
- Automatic Feed Forward Compensation
- Pulse-by-Pulse Current Limiting
- Enhanced Load Response Characteristics
- Under-Voltage Lockout with Hysteresis
- Double Pulse Suppression
- High Current Totem Pole Output
- Internally Trimmed Bandgap Reference
- 500kHz Operation
- Low Ro Error Amp
APPLICATION
- Switching regulators of any polarity
- Transformer-coupled DC-DC converters
AP8344
高性能電流模式 PWM 控制器
產品敘述
AP8344 提供實現交流轉直流（AC-DC）或直流轉直流（DC-DC）定頻電流模式控制架構所需的完整功能，且僅需最少外部元件即可完成設計。
內建保護電路包含欠壓鎖定（UVL）與電流限制功能。晶片內部整合欠壓鎖定機制，具備啟動電流低於 0.5mA 的特性；並內建高精度參考電壓，已於誤差放大器輸入端完成校準，以確保精確度。
此外，內部邏輯可確保鎖存式運作，PWM 比較器同時具備電流限制控制功能，輸出級採推挽式架構，可提供或吸收高峰值電流，適合驅動 N 溝道 MOSFET，且在關斷狀態下維持低漏電特性。
AP8344 提供 DIP8 與 SOP8 封裝。
產品特性
- 專為離線式與 DC-DC 轉換器最佳化設計針對離線式與直流-直流轉換器進行優化
- 低啟動電流（小於0.5毫安培）
- 自動前饋補償
- 逐週期電流限制
- 強化型負載響應特性
- 具遲滯功能的欠壓鎖定
- 雙脈衝抑制
- 高電流推挽式輸出
- 內部修調能隙基準電壓
- 500千赫茲運作頻率
- 低輸出阻抗誤差放大器
應用
- 任何極性的開關穩壓器
- 變壓器耦合型直流-直流轉換器