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Specifications
SKU: 4546848
VRM8.5 PWM and Triple Linear Power System Controller
| Parameter | Description | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage (VIN) | Operating input voltage range | 4.5 | - | 14 | V |
| Output Voltage (VOUT) | Adjustable output voltage range | 0.6 | - | 5.5 | V |
| Switching Frequency (fSW) | Fixed switching frequency | - | 300 | - | kHz |
| Peak Current Limit (IPEAK) | Maximum peak current limit | 12 | - | - | A |
| Efficiency (η) | Typical efficiency at full load | - | 92 | - | % |
| Quiescent Current (IQ) | Supply current in shutdown mode | - | 1 | - | μA |
| Shutdown Voltage (VSHDN) | Input voltage for shutdown | - | 1.1 | - | V |
| Thermal Shutdown Temperature (TSD) | Temperature at which thermal shutdown occurs | - | 160 | - | °C |
| Package Type | - | - | - | - | TSSOP-28 |
| Operating Temperature (TA) | Ambient operating temperature range | -40 | - | 125 | °C |
| Storage Temperature (TSTG) | Storage temperature range | -65 | - | 150 | °C |
Instructions for Using the ISL6524CBZ:
Power Supply Connection:
- Connect the input voltage (VIN) to the appropriate pin, ensuring it is within the specified range (4.5V to 14V).
- Connect the ground (GND) to the common ground.
Output Configuration:
- Set the desired output voltage (VOUT) using external resistors connected to the feedback (FB) pin. The formula for calculating the resistors is: [ V_ = V_ left(1 + fracright) ] where ( V_ ) is typically 0.6V.
Switching Frequency:
- The switching frequency is fixed at 300kHz. No external components are required to set this.
Current Limiting:
- The peak current limit is set internally to 12A. No external components are required for current limiting.
Thermal Management:
- Ensure proper heat dissipation by providing adequate PCB copper area or a heatsink if necessary. Monitor the device temperature to avoid exceeding the thermal shutdown temperature (160°C).
Shutdown Function:
- To shut down the device, apply a voltage less than 1.1V to the shutdown (SHDN) pin. To activate the device, apply a voltage greater than 1.1V to the SHDN pin.
Operating and Storage Temperatures:
- Ensure the ambient temperature remains within the operating range (-40°C to 125°C) and the storage temperature within the specified range (-65°C to 150°C).
PCB Layout:
- Follow recommended PCB layout guidelines to minimize noise and ensure stable operation. Keep high-frequency paths short and use decoupling capacitors close to the power pins.
Capacitor Selection:
- Use low ESR capacitors for input and output filtering. Recommended values are typically in the range of 10μF to 100μF for input and 10μF to 47μF for output.
Inductor Selection:
- Choose an inductor with a saturation current higher than the peak current limit (12A) and a suitable inductance value for the desired output ripple. Typical values range from 1μH to 4.7μH.
By following these instructions, you can ensure optimal performance and reliability of the ISL6524CBZ in your application.
(For reference only)Inquiry - ISL6524CBZ
