Datasheet LTC3544 (Analog Devices) - 7
| Fabricante | Analog Devices |
| Descripción | Quad Synchronous Step-Down Regulator: 2.25MHz, 300mA, 200mA, 200mA, 100mA |
| Páginas / Página | 16 / 7 — PIN FUNCTIONS. VFB200B (Pin 1):. RUN300 (Pin 9):. VFB200A (Pin 2):. … |
| Formato / tamaño de archivo | PDF / 300 Kb |
| Idioma del documento | Inglés |
PIN FUNCTIONS. VFB200B (Pin 1):. RUN300 (Pin 9):. VFB200A (Pin 2):. VFB300 (Pin 10):. RUN200A (Pin 3):. VFB100 (Pin 11):
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LTC3544
PIN FUNCTIONS VFB200B (Pin 1):
200mA Regulator B Feedback Pin. This
RUN300 (Pin 9):
300mA Regulator Enable Pin. Forcing pin receives the feedback voltage from an external resistive this pin to VIN enables the 300mA regulator, while forcing divider across the output. it to GND causes the regulator to shut off.
VFB200A (Pin 2):
200mA Regulator A Feedback Pin. This
VFB300 (Pin 10):
300mA Regulator Feedback Pin. This pin pin receives the feedback voltage from an external resistive receives the feedback voltage from an external resistive divider across the output. divider across the output.
RUN200A (Pin 3):
200mA Regulator A Enable Pin. Forcing
VFB100 (Pin 11):
100mA Regulator Feedback Pin. This pin this pin to VIN enables the 200mA regulator (channel A), receives the feedback voltage from an external resistive while forcing it to GND causes the regulator to shut off. divider across the output.
SW200B (Pin 4):
Switch Node Connection to Inductor for
RUN100 (Pin 12):
100mA Regulator Enable Pin. Forcing 200mA Regulator B. This pin connects to the drains of the this pin to VIN enables the 100mA regulator, while forcing internal power MOSFET switches. it to GND causes the 100mA regulator to shut off.
SW200A (Pin 5):
Switch Node Connection to Inductor for
SW100 (Pin 13):
Switch Node Connection to Inductor for 200mA Regulator A. This pin connects to the drains of the 100mA Regulator. This pin connects to the drains of the internal power MOSFET switches. internal power MOSFET switches.
PGND (Pin 6):
Power Path Return Pin for Both 200mA
GNDA (Pin 14):
Ground Pin for Internal Reference and Con- Regulators and the 300mA Regulator. trol Circuitry. Power path return for the 100mA regulator.
PVIN (Pin 7):
Power Path Supply Pin for Both 200mA
VCC (Pin 15):
Supply Pin for Internal Reference and Control Regulators and the 300mA Regulator. This pin must Circuitry. Power path supply pin for the 100mA regulator. be closely decoupled to PGND, with a 4.7μF or greater
RUN200B (Pin 16):
200mA Regulator B Enable Pin. Forcing ceramic capacitor. this pin to VIN enables the 200mA regulator (channel B),
SW300 (Pin 8):
Switch Node Connection to Inductor for while forcing it to GND causes the regulator to shut off. 300mA Regulator. This pin connects to the drains of the
Exposed Pad (Pin 17):
Ground. Must be soldered to PCB. internal power MOSFET switches. 3544fa 7
PIN FUNCTIONS VFB200B (Pin 1):
200mA Regulator B Feedback Pin. This
RUN300 (Pin 9):
300mA Regulator Enable Pin. Forcing pin receives the feedback voltage from an external resistive this pin to VIN enables the 300mA regulator, while forcing divider across the output. it to GND causes the regulator to shut off.
VFB200A (Pin 2):
200mA Regulator A Feedback Pin. This
VFB300 (Pin 10):
300mA Regulator Feedback Pin. This pin pin receives the feedback voltage from an external resistive receives the feedback voltage from an external resistive divider across the output. divider across the output.
RUN200A (Pin 3):
200mA Regulator A Enable Pin. Forcing
VFB100 (Pin 11):
100mA Regulator Feedback Pin. This pin this pin to VIN enables the 200mA regulator (channel A), receives the feedback voltage from an external resistive while forcing it to GND causes the regulator to shut off. divider across the output.
SW200B (Pin 4):
Switch Node Connection to Inductor for
RUN100 (Pin 12):
100mA Regulator Enable Pin. Forcing 200mA Regulator B. This pin connects to the drains of the this pin to VIN enables the 100mA regulator, while forcing internal power MOSFET switches. it to GND causes the 100mA regulator to shut off.
SW200A (Pin 5):
Switch Node Connection to Inductor for
SW100 (Pin 13):
Switch Node Connection to Inductor for 200mA Regulator A. This pin connects to the drains of the 100mA Regulator. This pin connects to the drains of the internal power MOSFET switches. internal power MOSFET switches.
PGND (Pin 6):
Power Path Return Pin for Both 200mA
GNDA (Pin 14):
Ground Pin for Internal Reference and Con- Regulators and the 300mA Regulator. trol Circuitry. Power path return for the 100mA regulator.
PVIN (Pin 7):
Power Path Supply Pin for Both 200mA
VCC (Pin 15):
Supply Pin for Internal Reference and Control Regulators and the 300mA Regulator. This pin must Circuitry. Power path supply pin for the 100mA regulator. be closely decoupled to PGND, with a 4.7μF or greater
RUN200B (Pin 16):
200mA Regulator B Enable Pin. Forcing ceramic capacitor. this pin to VIN enables the 200mA regulator (channel B),
SW300 (Pin 8):
Switch Node Connection to Inductor for while forcing it to GND causes the regulator to shut off. 300mA Regulator. This pin connects to the drains of the
Exposed Pad (Pin 17):
Ground. Must be soldered to PCB. internal power MOSFET switches. 3544fa 7