UC1823J
Current Mode PWM Controller 1.5A 1000kHz 16-Pin CDIP Tube
在庫:7,293
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部品番号 : UC1823J
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パッケージ/ケース : CDIP-16
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ブランド : TI
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コンポーネントのカテゴリ : DC DC Switching Controllers
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日付シート : UC1823J データシート (PDF)
概要 UC1823J
The UC1823 family of PWM control ICs 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, 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 the output. An under-voltage lockout section with 800mV of hysteresis assures low start up current. During under-voltage lockout, the output is high impedance. The current limit reference (pin 11) is a DC input voltage to the current limit comparator. Consult specifications for details.
These devices feature a totem pole output designed to source and sink high peak currents from capacitive loads, such as the gate of a power MOSFET. The on state is defined as a high level.
主な特長
- Compatible with Voltage or Current-Mode Topologies
- Practical Operation @ Switching Frequencies to 1.0MHz
- 50ns Propagation Delay to Output
- High Current Totem Pole Output (1.5A peak)
- Wide Bandwidth Error Amplifier
- Fully Latched Logic with Double Pulse Suppression
- Pulse-by-Pulse Current Limiting
- Soft Start/Max. Duty Cycle Control
- Under-Voltage Lockout with Hysteresis
- Low Start Up Current (1.1mA)
- Trimmed Bandgap Reference (5.1V ±1%)
仕様
以下は、選択された部品の特性やカテゴリーに関する基本的なパラメータである。
Topology | Boost, Buck, Flyback, Forward | Control mode | Current |
Duty cycle (max) (%) | 85 | Switching frequency (max) (kHz) | 1000 |
Features | Error amplifier, Multi-topology, Soft start, Synchronization pin | UVLO thresholds on/off (V) | 9.2/8.4 |
Operating temperature range (°C) | -55 to 125 | Rating | Military |
Gate drive (typ) (A) | 1.5 | Vin (max) (V) | 20 |
保証と返品
保証、返品、および追加情報
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QAと返品ポリシー
部品の品質保証: 365 日
返品・返金:90日以内
返品・交換:90日以内
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配送: たとえば、FedEx、SF、UPS、または DHL.UPS、または DHL。
部品のパッケージング保証: 100% ESD 帯電防止保護を特徴とする当社のパッケージングには、高い靭性と優れた緩衝機能が組み込まれています。
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