1 Descriptions
SC81A30 is a non-synchronous buck converter with a wide
input voltage range from 6V to 100V. The converter can
achieve high efficiency and can support up to 3.5A
continuous load current with integrated Low RON high-side
power MOSFETs. Featuring pulse skips mode and ultra-low
quiescent current during standby or light load, the device
can further extend battery life and is well-suited for batterypowered
applications.
The device employs a constant on-time control mode which
enables a fast transient response. It is compatible with low
equivalent series resistance output capacitors such as
polymer and ceramic (MLCC) capacitors with external
compensation circuits.
SC81A30 incorporates an internal VCC bias supply, which
helps to eliminate the need for an external VCC capacitor
and simplifies PCB layout. An open-drain PG indicator
provides sequencing, fault indication, and output voltage
monitoring.
SC81A30 supports protections including input under-voltage
protection, cycle-by-cycle peak current limitation, short
circuit protection with hiccup mode, and thermal shutdown
protection with auto-recovery
SC81A30 adopts ESOP8 Package.
2 Features
• Wide VIN Range: 6V to 100V
• 10μA Ultra Low Quiescent Current
• Up to 3.5A Continuous Output Current
• Integrated 100mΩ MOSFET
• 1.2V Reference with ±1% Accuracy
• COT Mode for Fast Load Transient
• Switching Frequency Adjustable 80KHz~1MHz
• No External VCC Capacitor is Needed
• Low Dropout Mode with DMAX>98%
• Power good indicator
• Programmable UVLO By EN pin
• Internal Soft Start
• Cycle by Cycle High Side Peak Current Limit
• UVP with Hiccup Mode
• ULVO, TSD Protection (Non-Latch)
• ESOP8 Package Available
3 Applications
• High Voltage Post Regulator
• E-Bikes, Power and Garden Tools
• Motor Drivers, Drones, Telecom
• Industry Power Supplies