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CS8126 Datasheet(PDF) 1 Page - Cherry Semiconductor Corporation |
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CS8126 Datasheet(HTML) 1 Page - Cherry Semiconductor Corporation |
1 / 9 page 1 s Low Dropout Voltage (0.6V at 0.5A) s 3% Output Accuracy s Active s External Delay for Reset s Protection Circuitry Reverse Battery Protection +60V, -50V Peak Transient Voltage Short Circuit Protection Internal Thermal Overload Protection RESET RESET Features Package Options 5 L TO-220 7 L D2PAK Tab (Gnd) Tab (Gnd) 1 5V, 750mA Low Dropout Linear Regulator with Delayed RESET CS8126,-1,-2 Description The CS8126 is a low dropout, high cur- rent 5V linear regulator. It is an improved replacement for the CS8156. Improvements include higher accuracy, tighter saturation control, better supply rejection, and enhanced circuit- ry. Familiar PNP regulator features such as reverse battery protection, over- voltage shutdown, thermal shutdown, and current limit make the CS8126 suit- able for use in automotive and battery operated equipment. Additional on- chip filtering has been included to enhance rejection of high frequency transients on all external leads. An active microprocessor func- tion is included on-chip with externally programmable delay time. During power-up, or after detection of any error in the regulated output, the lead will remain in the low state for the duration of the delay. Types of errors include short circuit, low input voltage, overvoltage shut- down, thermal shutdown, or others that cause the output to become unregulat- ed. This function is independent of the input voltage and will function correct- ly with an output voltage as low as 1V. Hysteresis is included in both the reset and Delay comparators for enhanced noise immunity. A latching discharge circuit is used to discharge the Delay capacitor, even when triggered by a rel- atively short fault condition. This circuit improves upon the commonly used SCR structure by providing full capaci- tor discharge (0.2V type). Note:The CS8126 is lead compatible with the LM2925, TLE4260, L4947, LM2927, and LM2926. RESET RESET RESET Block Diagram VOUT VIN Over Voltage Shutdown Pre- Regulator Regulated Supply for Circuit Bias Bandgap Reference Thermal Shutdown Error Amp Anti-Saturation and Current Limit Charge Current Generator Latching Discharge Reset Comparator Delay Comparator - + + - Q R S VDischarge Delay Gnd RESET CS8126-1 1VIN 2VOUT 3 Gnd 4 Delay 5 RESET CS8126-2 1VIN 2 RESET 3 Gnd 4 Delay 5VOUT 16 Lead SOIC Wide 1 VIN VOUT Delay ÐÐÐÐÐÐ RESET VOUT(SENSE) NC NC Gnd NC NC NC NC NC NC NC NC A Company ¨ Rev. 5/4/99 1 1VIN 2VOUT 3VOUT(SENSE) 4 Gnd 5 Delay 6 RESET 7NC 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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