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AS1101 数据表(PDF) 1 Page - ams AG |
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AS1101 数据表(HTML) 1 Page - ams AG |
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1 / 13 page  AS1101, AS1102, AS1103, AS1104 Low-Dropout LED Drivers austriamicrosystems Dat a Sh eet www.austriamicrosystems.com Revision 1.3 1 - 13 1 General Description The AS110x family are LED drivers providing matched current source bias for any color LED, including white and blue. LED current is programmable using an exter- nal resistor. The AS1101 LED currents are typical 460 x ISET (per LED) at an LED cathode voltage of 150mV and typical 650 x ISET at an LED cathode voltage of 1V. The AS1102, AS1103, and AS1104 LED currents are typical 230 x ISET (per LED) at an LED cathode voltage of 150mV and typical 325 x ISET at an LED cathode volt- age of 1V where ISET is the current through the external resistor connected to the CTRL pin. The AS110x family can drive up to 4 high-current LEDs. The AS1101, AS1102, and AS1104 incorporate a chip- enable feature via pin ON. When the devices are dis- abled, the supply current drops to less than 1µA. The devices are pin-to-pin compatible to the FAN5611, FAN5612 and FAN5614. The AS1101, AS1102, and AS1103 are available in a 6-pin SC70 package; the AS1104 is available in a 8-pin MSOP package. Figure 1. Typical Application Diagrams 2 Key Features ! LED Drivers for Parallel-Connected LEDs ! Ultra-Low Voltage Drop: Less Than 150mV (for Li- ion Battery Support) ! Analog and PWM Brightness Control ! Up to 80mA per LED (AS1101) ! Up to 40mA per LED (AS1102, AS1103, AS1104) ! No Electromagnetic Interference, No Switching- Noise ! Current-Matching Requires No External Compo- nents ! Active-Low Shutdown Mode (AS1101, AS1102, and AS1103) ! Low Shutdown-Current: Less Than 1µA ! SC70-6 Package (AS1101, AS1102, and AS1103) ! MSOP-8 Package (AS1104) ! Pin-to-Pin Compatible to FAN5611, FAN5612, and FAN5614 3 Applications The AS110x devices are ideal for LED displays and key- board backlights, as well as lighting management units for battery powered audio devices such as MP3 and CD players, mobile and cordless phones, PDAs, portable DVD players, and consumer electronics. CTRL GND AS1104 ISET 4 Diode Control with On/Off I2 I1 I3 I4 VIN VSET(3V) RSET CTRL GND AS1102 ISET 3 Diode Control with On/Off I2 I1 I3 VIN RSET ON ENABLE CTRL GND AS1103 ISET 4 Diode Control I2 I1 I3 I4 VIN RSET ON ENABLE CTRL GND AS1101 ISET 2 Diode Control with On/Off I1/I2 I3/I4 VIN RSET ON ENABLE VSET(3V) VSET(3V) VSET(3V) |
类似零件编号 - AS1101 |
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类似说明 - AS1101 |
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