The IU5706E is a high-performance wide input range (4.5V~24V) synchronous boost controller that supports an output voltage up to 33V. The output voltage is regulated using constant frequency current mode pulse width modulation (PWM) control.
The chip sets the switching frequency either through an external timing resistor or by synchronizing with an external clock signal. In resistor-programmed mode, the switching frequency is programmable from 50KHz to 1MHz, and can also be synchronized to an external clock between 300kHz and 1MHz.
Synchronous rectification enables high efficiency for high current applications, and lossless inductor DCR further improves efficiency. The IU5706E includes a 7.5V gate drive supply suitable for driving many types of MOSFETs.
Description
33V Maximum Output Voltage
4.5V to 24V Input Voltage Range
Current Mode Control with Internal Slope Compensation
Synchronization Capability with External Clock
Adjustable Frequency from 50KHz to 1MHz
Externally Adjustable Soft-Start Time
Output Voltage Power Good Indicator
±1% Feedback Reference 6µA
Shutdown Supply Current
720µA Quiescent Operating Current
Cycle-by-Cycle Current Limit and Thermal Shutdown
Adjustable Undervoltage Lockout (UVLO) and Output Overvoltage Protection
Applications
Thunderbolt ports for PCs
Automotive power systems
Battery powered systems
5V, 12V and 24V DC Bus power systems