Overview
The FAN48623UC50X is a synchronous boost regulator produced by Fairchild Semiconductor, now part of onsemi. This regulator is 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. It is part of the TINYBOOST family and is optimized for systems using advanced Li-Ion battery chemistries. The device operates in Continuous Conduction Mode (CCM) at moderate to heavy load currents and transitions to Discontinuous Conduction Mode (DCM) at light loads to maintain high efficiency.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Voltage Range | 2.5 | 4.5 | V | ||
| Output Voltage | 5.000 | 5.286 | V | ||
| Maximum Load Current | 2500 | mA | |||
| Quiescent Current (Automatic Bypass Mode) | VOUT_TARGET = 3.3 V, VIN = 3.6 V | 140 | 190 | μA | |
| Quiescent Current (Boost Mode) | VOUT = 3.3 V, VIN = 3.0 V | 135 | 180 | μA | |
| Quiescent Current (Shutdown) | EN = 0 V, VIN = 3.0 V | 4.0 | 12.0 | μA | |
| Quiescent Current (Forced Bypass Mode) | VIN = 3.6 V | 6.0 | 12.0 | μA | |
| Operating Temperature Range | -40 | 85 | °C | ||
| Switching Frequency | 2.5 MHz |
Key Features
- Synchronous Boost Regulator: Operates in Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) to maintain high efficiency across various load conditions.
- Bypass Mode: Automatically activates when the input voltage is above the boost regulator’s set point to reduce quiescent current.
- High Efficiency: Achieves high efficiency due to synchronous rectification and low supply current.
- Current-Mode Modulator: Ensures excellent transient response and smooth transitions between CCM and DCM operation.
- Overload Protection: Includes features to protect against overload conditions, such as valley-current limiting and fault detection.
- Compact Solution: Available in a 16-bump, 0.4 mm pitch, Wafer-Level Chip-Scale Package (WLCSP) for space-efficient designs.
Applications
- Portable Electronics: Ideal for devices powered by single-cell Li-Ion batteries, such as smartphones, tablets, and other mobile devices.
- Wearable Devices: Suitable for wearables that require efficient power management from a single-cell battery.
- IoT Devices: Used in Internet of Things (IoT) devices that need reliable and efficient power conversion.
- Industrial and Automotive Systems: Can be applied in various industrial and automotive systems requiring stable output voltage from a single-cell battery.
Q & A
- What is the input voltage range of the FAN48623UC50X?
The input voltage range is from 2.5 V to 4.5 V.
- What is the maximum output voltage of the FAN48623UC50X?
The maximum output voltage is 5.286 V.
- What is the maximum load current the FAN48623UC50X can handle?
The maximum load current is 2500 mA.
- What are the operating modes of the FAN48623UC50X?
The device operates in Continuous Conduction Mode (CCM), Discontinuous Conduction Mode (DCM), and Bypass Mode.
- How does the FAN48623UC50X manage overload conditions?
The device includes valley-current limiting and fault detection to manage overload conditions.
- What is the switching frequency of the FAN48623UC50X?
The switching frequency is typically 2.5 MHz.
- What package type is the FAN48623UC50X available in?
The device is available in a 16-bump, 0.4 mm pitch, Wafer-Level Chip-Scale Package (WLCSP).
- What is the operating temperature range of the FAN48623UC50X?
The operating temperature range is from -40°C to 85°C.
- How does the FAN48623UC50X achieve high efficiency?
The device achieves high efficiency through synchronous rectification and low supply current.
- What types of applications is the FAN48623UC50X suitable for?
The device is suitable for portable electronics, wearables, IoT devices, and various industrial and automotive systems.
