Datenblatt-Suchmaschine für elektronische Bauteile |
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CS8122YTHA5 Datenblatt(PDF) 1 Page - Cherry Semiconductor Corporation |
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CS8122YTHA5 Datenblatt(HTML) 1 Page - Cherry Semiconductor Corporation |
1 / 8 page The CS8122 is a precision 5V linear reg- ulator capable of sourcing in excess of 750mA. The Õs delay time is externally programmed using a discrete RC network. During power up, or when the output goes out of regulation, the lead remains in the low state for the duration of the delay. This func- tion is independent of the input voltage and will function correctly as long as the output voltage remains at or above 1V. Hysteresis is included in the Delay and the comparators to improve noise immunity. A latching discharge circuit is used to discharge the delay capacitor when it is triggered by a brief fault condition. The regulator is protected against a variety of fault conditions: i.e. reverse battery, overvoltage, short circuit and thermal runaway conditions. The regu- lator is protected against voltage tran- sients ranging from -50V to +40V. Short circuit current is limited to 1.2A (typ). The CS8122 is an improved replacement for the CS8126 and features a tighter tol- erance on its output voltage (2% vs 4%). The CS8122 is packaged in a 5 lead TOÐ220 with copper tab. The copper tab can be connected to a heat sink if necessary. RESET RESET RESET 1 2% 5V, 750mA Low Dropout Linear Regulator with Delayed RESET Features s 5V +/- 2% Regulated Output s Low Dropout Voltage (0.6V @ 0.5A) s 750mA Output Current Capability s Externally Programmed Delay s Fault Protection Reverse Battery 60V Load Dump -50V Reverse Transient Short Circuit Thermal Shutdown RESET Package Options 5 Lead TO-220 Description Block Diagram VOUT VIN Over Voltage Shutdown Pre- Regulator Regulated Supply for Circuit Bias Bandgap Reference Thermal Shutdown Anti-Saturation and Current Limit - + + - Q R S VDISC Delay Gnd RESET VOUT SENSE Error Amplifier Latching Discharge Delay Comparator Charge Current Generator CS8122 1VIN 2VOUT 3 Gnd 4 Delay 5 RESET 1 A Company ¨ Rev. 2/5/99 Cherry Semiconductor Corporation 2000 South County Trail, East Greenwich, RI 02818 Tel: (401)885-3600 Fax: (401)885-5786 Email: info@cherry-semi.com Web Site: www.cherry-semi.com |
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