Overview
The FAN48632UC33X, produced by onsemi, is a pulsed-load synchronous boost regulator designed to optimize power management in systems utilizing advanced Li-ion battery chemistries. This IC is particularly suited for applications where the battery voltage may drop below the required system voltage, ensuring continuous operation. It features a compact design with built-in power transistors, synchronous rectification, and low supply current, making it ideal for cell phones, smartphones, and tablets.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Input Voltage Range | 2.35 | 5.5 | V | |
| Fixed Output Voltage | 3.3 | 3.5 | V | |
| Maximum Continuous Load Current | 1.5 | A | ||
| Maximum Pulsed Load Current | 2.0 | A | ||
| Switching Frequency | 2.5 | MHz | ||
| Quiescent Current in Shutdown Mode | < 3 | μA | ||
| Operating Temperature Range | -40 | 85 | °C | |
| Package Type | WLCSP-16 (1.78x1.78x0.586 mm) |
Key Features
- Few external components required: 0.47 μH inductor and 0603 case size input and output capacitors.
- Internal synchronous rectifier and soft-start with true load disconnect.
- True bypass operation when VIN > target VOUT.
- Forced bypass mode to reduce quiescent current.
- VSEL control to optimize target VOUT.
- Short-circuit protection and over-temperature protection.
- Low operating quiescent current.
- Pb-free, halogen-free/BFR-free, and RoHS compliant.
Applications
- Boost for low-voltage Li-ion batteries.
- Brownout prevention.
- Supply for GSM RF PA.
- Cell phones, smartphones, and tablets.
Q & A
- What is the primary function of the FAN48632UC33X?
The FAN48632UC33X is a synchronous boost regulator designed to provide a stable output voltage from a single-cell Li-ion battery, even when the battery voltage is below the system's minimum required voltage.
- What is the input voltage range of the FAN48632UC33X?
The input voltage range is from 2.35 V to 5.5 V.
- What are the fixed output voltage options for the FAN48632UC33X?
The fixed output voltage options are 3.3 V and 3.5 V.
- What is the maximum continuous load current of the FAN48632UC33X?
The maximum continuous load current is 1.5 A at VIN of 2.6 V.
- What is the maximum pulsed load current of the FAN48632UC33X?
The maximum pulsed load current is 2.0 A for a GSM 217 Hz repetition rate.
- What is the switching frequency of the FAN48632UC33X?
The switching frequency is approximately 2.5 MHz.
- How does the FAN48632UC33X manage quiescent current in shutdown mode?
The quiescent current in shutdown mode is less than 3 μA.
- What is the operating temperature range of the FAN48632UC33X?
The operating temperature range is from -40°C to 85°C.
- What package type is the FAN48632UC33X available in?
The FAN48632UC33X is available in a 16-bump, 0.4 mm pitch, Wafer-Level Chip-Scale Package (WLCSP).
- Is the FAN48632UC33X RoHS compliant?
Yes, the FAN48632UC33X is Pb-free, halogen-free/BFR-free, and RoHS compliant.
