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Zakładka z wyszukiwarką danych komponentów |
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Zakładka z wyszukiwarką danych komponentów |
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ADD5211ACPZ-R7 Arkusz danych(PDF) 4 Page - Analog Devices |
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ADD5211ACPZ-R7 Arkusz danych(HTML) 4 Page - Analog Devices |
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4 / 6 page  ADD5211 Preliminary Technical Data Rev. PrA | Page 4 of 6 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 2 1 3 4 5 6 18 17 16 15 14 13 FAULT PWM EN VIN UVLO VDR FB1 FB2 LGND FB3 FB4 OVP ADD5211 TOP VIEW NOTES 1. CONNECT THE EXPOSED PADDLE TO GROUND. Figure 3. Pin Configuration Table 3. Pin Function Descriptions Pin No. Mnemonic Description 1 VDR Switching MOSFET Gate Driver Supply Pin. Bypass VDR to AGND with a 1 µF bypass capacitor. 2 UVLO Input Undervoltage Lockout. Set the start- up and shutdown input voltage level by connecting this pin to the input voltage through a voltage divide resistor. 3 VIN Supply Input Pin. Bypass VIN to AGND with a 1 µF bypass capacitor. 4 EN Shutdown Control Pin for PWM Input Operation Mode. 5 PWM PWM Signal Input. 6 FAULT Open Drain Fault Output. 7 SS Soft Start Pin. 8 COMP Compensation for the Boost Converter. Two capacitors and a resistor are connected in series between ground and this pin for stable operation. 9 FREQ Frequency Select. A resistor from this pin to Pin No. Mnemonic Description ground sets the boost switching frequency from 200 kHz to 1.2 MHz. 10 ISET Full-Scale LED Current Set. A resistor from this pin to ground sets the LED current up to 200 mA. 11 VDD Internal Linear Regulator Output. This regulator provides power to the ADD5211. Bypass VDD to AGND with a 1 µF bypass capacitor. 12 LSD LED Short Voltage Level Setting Pin. To disable LED short protection, connect this pin to VDD. 13 FB1 Regulated Current Sink. Connect the bottom cathode of the LED string to this pin. If unused, connect FB1 to LGND. 14 FB2 Regulated Current Sink. Connect the bottom cathode of the LED string to this pin. If unused, connect FB2 to LGND. 15 LGND LED Current Sink Ground. 16 FB3 Regulated Current Sink. Connect the bottom cathode of the LED string to this pin. If unused, connect FB3 to LGND. 17 FB4 Regulated Current Sink. Connect the bottom cathode of the LED string to this pin. If unused, connect FB4 to LGND. 18 OVP Overvoltage Protection. The boost converter output is connected to this pin with voltage divide resistors. 19 PGND Power Ground. 20 RAMP Ramp Compensation Pin. 21 CS Current Sense Input. Allows the current sensing to control the boost and to limit the switching current. 22 GATE_N Switching MOSFET Gate Low Driving Pin. 23 GATE_P Switching MOSFET Gate High Driving Pin. 24 AGND Analog Ground. EP Exposed Paddle. Connect the exposed paddle to ground. |
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