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ADP1043AACPZ-RL Arkusz danych(PDF) 9 Page - Analog Devices |
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ADP1043AACPZ-RL Arkusz danych(HTML) 9 Page - Analog Devices |
9 / 72 page ADP1043A Rev. 0 | Page 9 of 72 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS PIN 1 INDICATOR 1 VS2 2 AGND 3 VS1 4 CS2– 5 CS2+ 6 ACSNS 7 CS1 8 PGND 24 SHAREi 23 SHAREo 22 PGOOD1 21 PGOOD2 20 FLAGIN 19 PSON 18 SDA 17 SCL TOP VIEW (Not to Scale) NOTES 1. THE ADP1043A HAS AN EXPOSED THERMAL PAD ON THE UNDERSIDE OF THE PACKAGE. FOR INCREASED RELIABILITY OF THE SOLDER JOINTS AND MAXIMUM THERMAL CAPABILITY, IT IS RECOMMENDED THAT THE PAD BE SOLDERED TO THE PCB GROUND PLANE. Figure 3. Pin Configuration Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 VS2 Power Supply Output Sense Input. This signal is referred to PGND. Input to a low frequency Σ-Δ ADC. Nominal voltage at this pin should be 1 V. The resistor divider on this input must have a tolerance specification of 0.5% or better to allow for trimming. 2 AGND Analog Ground. This pin is the ground for the analog circuitry of the ADP1043A. Star connect to DGND. 3 VS1 Local Voltage Sense Input. This signal is referred to PGND. Input to a high frequency Σ-Δ ADC. Nominal voltage at this pin should be 1 V. The resistor divider on this input must have a tolerance specification of 0.5% or better to allow for trimming. 4 CS2− Inverting Differential Current Sense Input. Nominal voltage at this pin should be 1 V for best operation. When using high-side current sensing in a 12 V application, place a 110 kΩ resistor between the sense resistor and this pin. When using low-side current sensing, place a 10 kΩ resistor between the sense resistor and this pin. When using high-side current sensing, use the formula R = (VCOMMONMODE − 1)/100 μA. A 0.1% resistor must be used to connect this circuit. 5 CS2+ Noninverting Differential Current Sense Input. Nominal voltage at this pin should be 1 V for best operation. When using high-side current sensing in a 12 V application, place a 110 kΩ resistor between the sense resistor and this pin. When using low-side current sensing, place a 10 kΩ resistor between the sense resistor and this pin. When using high-side current sensing, use the formula R = (VCOMMONMODE − 1)/100 μA. A 0.1% resistor must be used to connect this circuit. 6 ACSNS AC Sense Input. This input is connected upstream of the main inductor through a resistor divider network. The nominal voltage for this circuit is 0.45 V. This signal is referred to PGND. 7 CS1 Primary Side Current Sense Input. This pin is the current transformer input to measure and control the primary side current. This signal is referred to PGND. The resistors on this input must have a tolerance specification of 0.5% or better to allow for trimming. 8 PGND Power Ground. This pin is the ground connection for the main power rail of the power supply. Star connect to AGND. 9 SR1 Synchronous Rectifier Output. This PWM output connects to the input of a FET driver. This pin can be disabled when not in use. This signal is referred to AGND. 10 SR2 Synchronous Rectifier Output. This PWM output connects to the input of a FET driver. This pin can be disabled when not in use. This signal is referred to AGND. 11 OUTA PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND. 12 OUTB PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND. 13 OUTC PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND. 14 OUTD PWM Output for Primary Side Switch. This pin can be disabled when not in use. This signal is referred to AGND. 15 OUTAUX Auxiliary PWM Output. This pin can be disabled when not in use. This signal is referred to AGND. 16 GATE OrFET Gate Drive Output (Open Drain). This signal is referred to AGND. 17 SCL I2C Serial Clock Input. This signal is referred to AGND. 18 SDA I2C Serial Data Input and Output (Open Drain). This signal is referred to AGND. |
Podobny numer części - ADP1043AACPZ-RL |
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Podobny opis - ADP1043AACPZ-RL |
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