Description:

The GD30DC1902 is a 100V, 2A synchronous stepdown converter featuring integrated high-side and lowside MOSFETs. Utilizing advanced constant-on-time(COT) control, it offers a compact solution size withexcellent load transient performance.The integrated BST charging circuit reduces both costand solution size. Its extended high-duty cycle makes itideal for applications requiring a low drop-out feature.240μA quiescent current saves the power, while its lowoff-current is particularly suitable for battery-poweredapplications.The GD30DC1902 supports FCCM/PFM mode selection.FCCM mode ensures continuous conduction operationacross all load ranges, enabling compatibility withisolated 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 GD30DC1902 is available in a compact ESOP8package, making it a space-efficient solution.

Features:

• 4.5V to 100V Wide Operational Range

• Output Current Capability: 2A

• Integrated High Side Power MOS with400mΩ Low Resistance

• Integrated Low Side Power MOS with120mΩ Low Resistance

• Constant-On-Time Control

• Low Quiescent: 240μA

• Low Input Current at Off-state: 4µA

• Programmable Switching Frequency from300kHz to 800kHz

• FPWM/PFM mode selectable

• Built-in Pull-up Current at EN Pin

• Internal 2ms Soft Start

• Integrated BST Charge Circuit

• Low Drop Out Mode Support 97% DutyCycle

• Pre-bias Start-up

• Available in ESOP8 package

Applications:

• Battery powered tools

• E-bike powers, E-motors

• Industry application