Description:

The GD30DC1901 is a 100V, 1A synchronous stepdown converter featuring integrated high-side and lowside MOSFETs. Utilizing advanced constant-on-time(COT) control, it offers a compact solution size with excellent load transient performance.The integrated BST charging circuit reduces both cost and solution size. Its extended high-duty cycle makes it ideal for applications requiring a low drop-out feature. 220μA quiescent current saves the power, while its low off-current is particularly suitable for battery-powered applications.The GD30DC1901 supports FCCM/PFM mode selection.FCCM mode ensures continuous conduction operation across all load ranges, enabling compatibility with isolated buck converter applications.It includes built-in protection features such as cycle-bycycle current limit, hiccup mode SCP, output overvoltage protection (OVP), feedback (FB) open protection,and thermal shutdown for excessive power dissipation.The GD30DC1901 is available in a compact ESOP8 package, making it a space-efficient solution.

Features:

• 4.5V to 100V Wide Operational Range

• Continuous Output Current: 1A

• Integrated 500mΩ/200mΩ Low OnResistance Power MOS

• Constant-On-Time Control

• Low Quiescent Current: 220μA

• Low Shutdown Current: 4μA

• Programmable Switching Frequency from300kHz to 800kHz

• Selectable FPWM/PFM Mode

• Support Isolated-Buck Topology in FCCM

• Built-in Pull-up Current at EN Pin

• Internal 2ms Soft Start function

• Integrated BST Charging Circuit

• Low Drop Out Mode Support 97% Duty Cycle

• Pre-bias Start-up

• Available in ESOP8 package

Applications:

• Battery powered tools

• E-bike powers, E-motors

• Industry applications