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SS6563 Datasheet(PDF) 1 Page - Silicon Standard Corp. |
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SS6563 Datasheet(HTML) 1 Page - Silicon Standard Corp. |
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1 / 10 page  www.SiliconStandard.com 1 of 10 SS6563 Versatile DC/DC Converter FEATURES Operates from 3V to 30V input voltage Internal 2A peak current switch. Continuous output current of 1.5A Bootstrapped driver. High-side current sense capability. High efficiency (up to 90%). Internal ±2% reference. Low quiescent current at 1.6mA. Operating frequency from 100Hz to 100KHz. APPLICATIONS Constant Current Source for Battery Chargers. Saver for Cellular phones. Step-Down DC/DC Converter Module. DESCRIPTION The SS6563 is a monolithic control circuit that provides the primary functions required for DC to DC converters and high-side-sensed constant current sources. The device consists of an inter- nal temperature compensated reference, com- parator, controlled duty-cycle oscillator with an active current-sense circuit, bootstrapped driver, and high-current output switch. This device is specifically designed to construct a constant cur- rent source for battery chargers with a minimum number of external components. A bootstrapped driver can drive the NPN output switch to satura- tion for higher efficiency and less heat dissipation. The SS6563 can deliver 1.5A continuous current without requiring a heat sink. TYPICAL APPLICATION CIRCUIT + C3 1 µF 470 µF + C1 100 µF C2 1000pF R1 470 RB 3K R3 2.2M RS 0.22 RA 1K R2 390K D1 1N5819 D3 D2 1N4148 L1 300 µH SS6563 8 7 6 5 4 3 2 1 BOOST FB GND IS DC DE CF VCC + C4 5V/1A 8V~25V VIN When VIN>15V make R1=1K 1N4148 Line Regulation VIN = 10V~20V @ IO=1A 40mV Load Regulation VIN = 15V, @ IO=100mA~1A 20mV Short Circuit Current VIN =15V, @ RL = 0.1 Ω 1.3A Step-Down Converter Rev.2.02 4/06/2004 |
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