產品規格表
UC1843B-SP
- QML class V (QMLV) qualified, SMD 5962-86704
- 5962R8670412VYC:
- Radiation hardness assurance (RHA) up to 100-krad(Si) total ionizing dose (TID)
- Optimized for offline and DC-to-DC converters
- Low start-up current (< 0.5 mA)
- Trimmed oscillator discharge current
- Automatic feed forward compensation
- Pulse-by-pulse current limiting
- Enhanced load response characteristics
- Undervoltage lockout (UVLO) with hysteresis
- Double-pulse suppression
- High-current totem-pole output
- Internally-trimmed bandgap reference
- 500-kHz operation
- Low RO error amplifier
The UC1843B-SP control IC is a radiation hardened pin-for-pin compatible version of the UC1843A-SP. Providing the necessary characteristics to control current-mode switched-mode power supplies, this device has improved features. Start-up current is specified to be less than 0.5 mA and oscillator discharge is trimmed to 8.3 mA. During UVLO, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V.
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開發板
UC1843BEVM-CVAL — UC1843B-SP 電流模式 PWM 控制器評估模組
The UC1843BEVM-CVAL uses the UC1843A-SP, INA901-SP, LM139AQML-SP, and UC1901-SP to create an isolated feedback flyback with current sensing and over current flags. The UC1843A-SP is used to switch the low side MOSFET of the flyback converter and provide voltage and current to the output. The (...)
使用指南: PDF
計算工具
參考設計
TIDA-070002 — 20 至 40 VIN、50-W 航太級隔離返馳式 DC/DC 過電流防護參考設計
Spacecraft bus voltages vary from the well-established 28-V to more than the 100-V typically used in highpower commercial communications satellites, this reference design shows an example for a space-grade 50-W isolated intermediary bus converter, while implementing over-current protection (OCP) (...)
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
CFP (HKU) | 10 | Ultra Librarian |
DIESALE (KGD) | — |
訂購與品質
內含資訊:
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
內含資訊:
- 晶圓廠位置
- 組裝地點