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UC1825-SP
- QML-V Qualified, SMD 5962-87681
- Rad-Tolerant: 30 kRad (Si) TID(1)
- Compatible With Voltage- or Current-Mode Topologies
- Practical Operation Switching Frequencies to 1 MHz
- 50-ns Propagation Delay-to-Output
- High-Current Dual Totem Pole Outputs (1.5 A Peak)
- Wide Bandwidth Error Amplifier
- Fully Latched Logic With Double-Pulse Suppression
- Pulse-by-Pulse Current Limiting
- Soft Start/Maximum Duty-Cycle Control
- Undervoltage Lockout With Hysteresis
- Low Start-Up Current (1.1 mA)
(1) Radiation tolerance is a typical value based upon initial device qualification with dose rate = 10 mrad/sec. Radiation Lot Acceptance Testing is available - contact factory for details.
The UC1825 PWM control device is optimized for high-frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier. This controller is designed for use in either current-mode or voltage mode systems with the capability for input voltage feed-forward.
Protection circuitry includes a current limit comparator with a 1-V threshold, a TTL compatible shutdown port, and a soft start pin which will double as a maximum duty-cycle clamp. The logic is fully latched to provide jitter-free operation and prohibit multiple pulses at an output. An undervoltage lockout section with 800 mV of hysteresis assures low start up current. During undervoltage lockout, the outputs are high impedance.
This device features totem pole outputs designed to source and sink high peak currents from capacitive loads, such as the gate of a power MOSFET. The on state is designed as a high level.
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UC1825 TINA-TI Transient Reference Design
UC1825 Unencrypted TINA-TI Transient Spice Model
パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
---|---|---|
CDIP (J) | 16 | Ultra Librarian |
LCCC (FK) | 20 | Ultra Librarian |
購入と品質
- RoHS
- REACH
- デバイスのマーキング
- リード端子の仕上げ / ボールの原材料
- MSL 定格 / ピーク リフロー
- MTBF/FIT 推定値
- 使用原材料
- 認定試験結果
- 継続的な信頼性モニタ試験結果
- ファブの拠点
- 組み立てを実施した拠点