R1207N Series STEP-UP DC/DC CONVERTER
■The R1207N Series are CMOS-based PWM control type step-up DC/DC converter ICs with low supply current.Each of these ICs consists of an NMOS FET, a diode, an oscillator, a PWM comparator, a voltage reference unit, an error amplifier, a current limit circuit, an under voltage lockout circuit (UVLO), an over-voltage protection circuit (OVP), a soft-start circuit, a Maxduty limit circuit, and a thermal shutdown protection circuit. This step-up DC/DC converter can be easily built with a few external components such as a coil, a resistor, and a capacitor. As the protection functions, the R1207N Series have a Lx peak current limit function, an over voltage protection (OVP) function, an under voltage lock out (UVLO) function and a thermal shutdown function.
■The R1207N Series present the R1207N8xxA version that is optimized for the constant voltage power source, and the R1207N8xxB/C version that is optimized for driving the white LED with the constant current. The R1207N8xxB/C is an adjustable version that can change the LED brightness dynamically by using a 200Hz to 300kHz PWM signal toward the CE pin.
■The R1207N Series are available in TSOT-23-6 package.
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R1207N8xxA 、 R1207N8xxB 、 R1207N8xxC 、 R1207N8x3∗-TR-FE 、 R1207N81xx 、 R1207N82xx 、 R1207NxxxA 、 R1207NxxxB 、 R1207NxxxC 、 R1207N823A 、 R1207N823B 、 R1207N823C 、 R1207N Series 、 R1207N |
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STEP-UP DC/DC CONVERTER 、 CMOS-based PWM control type step-up DC/DC converter ICs with low supply current |
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[ Constant Voltage Power Source for portable equipment ][ OLED power supply for portable equipment ][ White LED Backlight for portable equipment ] |
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Datasheet |
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Please see the document for details |
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TSOT-23-6 |
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English Chinese Chinese and English Japanese |
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190808 |
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EA-298-190808 |
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1.8 MB |
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