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HT7660 Datasheet(PDF) 2 Page - Holtek Semiconductor Inc |
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HT7660 Datasheet(HTML) 2 Page - Holtek Semiconductor Inc |
2 / 10 page Pin Assignment Pin Description Pin No. Pin Name I/O Internal Connection Description 1 BOOST I CMOS Pull-low Higher switching frequency selection input 2 CAP+ O CMOS This pin is connected to the positive terminal of Capacitor C1 for a charge pump 3 VSS ¾¾ Negative power supply, ground 4 CAP - O NMOS This pin is connected to the negative terminal of Capacitor C1 for a charge pump 5 VOUT O NMOS This pin is connected to the negative terminal of Capacitor C2 for charge reservoir. Output voltage pass through this pin 6LV I ¾ Floating this pin enables the voltage regulator. Connect this pin to VSS (Ground) to bypass voltage regulator and improve low voltage operation 7 OSC I/O Transmission Gate External clock input pin. This pin can be connected with an external capacitor to reduce switching frequency 8 VDD ¾¾ Positive power supply Absolute Maximum Ratings Supply Voltage ...........................VSS -0.3V to VSS+13V Operating Temperature........................... -40°Cto85°C Storage Temperature ............................ -50°Cto125°C Note: These are stress ratings only. Stresses exceeding the range specified under ²Absolute Maximum Ratings² may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil- ity. Electrical Characteristics Ta=25 °C Symbol Parameter Test Conditions Min. Typ. Max. Unit VDD Conditions VDD Operating Voltage ¾¾ 3 ¾ 12 V ISTB Standby Current 3V No load ¾ 26 100 mA 5V ¾ 80 160 fOSC System Frequency 3V ¾ 2.5 4 ¾ kHz 5V 5 10 ¾ ROUT Output Source Resistance 3V IOUT=10mA ¾ 97 150 W 5V IOUT=20mA ¾ 60 100 VCON-EFF Voltage Conversion Efficiency 3V No load 99 ¾¾ % 5V 99 99.9 ¾ PEFF Power Efficiency 3V RL=5k W 96 ¾¾ % 5V 96 98 ¾ HT7660 Rev. 1.10 2 January 21, 2003 1 2 3 4 8 7 6 5 B O O S T C A P + V S S C A P - V D D O S C L V V O U T H T 7 6 6 0 8 D I P - A / S O P - A |
Similar Part No. - HT7660_03 |
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Similar Description - HT7660_03 |
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