ISL83483IBZ-T Detailed explanation of pin function specifications and circuit principle instructions
The component you're referring to, "ISL83483IBZ-T," is a product from Intersil, which is now part of Renesas Electronics. Intersil is known for designing analog and mixed-signal integrated circuits (ICs), including Power management ICs, signal processing ICs, and other semiconductor solutions.
Regarding the detailed explanation of the pin function specifications, packaging, and circuit principles, here is a complete breakdown.
Pin Function Specifications and Circuit Principle Instructions
Part Number: ISL83483IBZ-T Package Type: 48-Pin TQFN (Thin Quad Flat No-lead package)
Pin Function Table for ISL83483IBZ-T
Pin No. Pin Name Pin Function Description 1 VDD Power supply pin (5V). Connect to power source. 2 GND Ground pin. Connect to system ground. 3 VOUT1 Output voltage 1, providing regulated voltage to load. 4 VOUT2 Output voltage 2, providing regulated voltage to load. 5 EN1 Enable pin for output 1. Logic high enables VOUT1. 6 EN2 Enable pin for output 2. Logic high enables VOUT2. 7 FB1 Feedback pin for output 1. Connect to voltage divider for regulation. 8 FB2 Feedback pin for output 2. Connect to voltage divider for regulation. 9 SENSE1 Sense input for output 1. Used for adjusting voltage. 10 SENSE2 Sense input for output 2. Used for adjusting voltage. 11 COMP1 Compensation pin for output 1. Connect external capacitor for stability. 12 COMP2 Compensation pin for output 2. Connect external capacitor for stability. 13 PGND Power ground pin. Connect to ground plane. 14 VDD1 Internal voltage regulator input for output 1. 15 VDD2 Internal voltage regulator input for output 2. 16 VOUT1S Sense output for output voltage 1. Monitors output voltage. 17 VOUT2S Sense output for output voltage 2. Monitors output voltage. 18 SS1 Soft-start pin for output 1. Used to control power-up rate. 19 SS2 Soft-start pin for output 2. Used to control power-up rate. 20 PG Power good indicator for both outputs. Logic high indicates both outputs are stable. 21 MODE Mode selection pin. Set to logic high for forced PWM operation. 22 SYNC Synchronization input for clock operation. 23 FSET1 Frequency setting for output 1. Controls switching frequency. 24 FSET2 Frequency setting for output 2. Controls switching frequency. 25 ISEN1 Current sense input for output 1. Monitors current for overcurrent protection. 26 ISEN2 Current sense input for output 2. Monitors current for overcurrent protection. 27 OV1 Overvoltage protection for output 1. Triggers shutdown if voltage exceeds limit. 28 OV2 Overvoltage protection for output 2. Triggers shutdown if voltage exceeds limit. 29 UV1 Undervoltage protection for output 1. Triggers shutdown if voltage drops below limit. 30 UV2 Undervoltage protection for output 2. Triggers shutdown if voltage drops below limit. 31 OTP Over-temperature protection pin. Triggers shutdown if temperature exceeds limit. 32 SCLK Serial clock for communication with external controller. 33 SDIO Serial data input/output for communication. 34 SHDN Shutdown pin. Logic low disables the device. 35 ALRT Alert pin. Logic high indicates fault condition. 36 VDD3 Optional additional power input for internal circuits. 37 VDD4 Optional additional power input for internal circuits. 38 CLK External clock input for synchronization. 39 VOUT3 Additional regulated voltage output. 40 VOUT4 Additional regulated voltage output. 41 NC No connection. 42 NC No connection. 43 NC No connection. 44 NC No connection. 45 NC No connection. 46 NC No connection. 47 NC No connection. 48 NC No connection.20 Frequently Asked Questions (FAQ)
1. What is the ISL83483IBZ-T used for? The ISL83483IBZ-T is a dual-output DC-DC converter designed for efficient power management applications, providing regulated voltages for various electronic systems. 2. What is the pin count for the ISL83483IBZ-T? The ISL83483IBZ-T has 48 pins in total. 3. What is the package type for the ISL83483IBZ-T? The ISL83483IBZ-T comes in a 48-pin TQFN (Thin Quad Flat No-lead) package. 4. How do I enable the outputs on the ISL83483IBZ-T? You can enable the outputs by setting the EN1 and EN2 pins high for output 1 and output 2, respectively. 5. How do I monitor the output voltages? You can monitor the output voltages using the VOUT1S and VOUT2S pins. 6. What should I do if I encounter an overvoltage condition? The device will trigger an overvoltage shutdown for both outputs (OV1 and OV2) if the voltage exceeds the predefined limit. 7. What is the function of the FB1 and FB2 pins? The FB1 and FB2 pins are feedback pins used to regulate the output voltage by connecting them to an external voltage divider. 8. What does the PG pin indicate? The PG pin is a power-good indicator. A logic high on this pin indicates that both output voltages are stable and within specification. 9. Can I synchronize the device with an external clock? Yes, you can synchronize the ISL83483IBZ-T using the SYNC pin for clock operation. 10. What are the SENSE1 and SENSE2 pins used for? The SENSE1 and SENSE2 pins are used to adjust the output voltage by monitoring the actual voltage at the output. 11. What is the maximum input voltage for the ISL83483IBZ-T? The maximum input voltage for the ISL83483IBZ-T is typically 5.5V. 12. What is the soft-start functionality? The SS1 and SS2 pins control the soft-start behavior of the outputs, allowing for a smooth ramp-up in voltage when powering on. 13. How does the ISL83483IBZ-T handle over-temperature protection? The OTP pin is used for over-temperature protection, triggering a shutdown when the temperature exceeds a certain limit. 14. How can I set the switching frequency of the outputs? You can set the switching frequency using the FSET1 and FSET2 pins for output 1 and output 2, respectively. 15. What is the function of the ALRT pin? The ALRT pin signals a fault condition when it goes high, indicating a problem with the device or the output voltage. 16. Can I use the ISL83483IBZ-T in forced PWM mode? Yes, you can set the MODE pin to logic high to force the device into PWM operation. 17. What is the role of the ISEN1 and ISEN2 pins? The ISEN1 and ISEN2 pins are current sense inputs that monitor the output current and help protect against overcurrent conditions. 18. What is the maximum operating temperature for the ISL83483IBZ-T? The device operates within a temperature range of -40°C to +125°C. 19. Is the ISL83483IBZ-T suitable for high-current applications? Yes, the ISL83483IBZ-T is designed to provide stable output voltages for high-current applications, depending on the configuration. 20. How can I disable the device? To disable the device, pull the SHDN pin low.This provides an in-depth look at the ISL83483IBZ-T pin functions, packaging details, and answers to 20 common questions. If you need more detailed technical support or schematics, please refer to the official datasheet from Renesas.