SY8120I High Efficiency, Fast Response, 2.0A, 18V Input Synchronous Step-Down Regulator
mark: qGxyz (Device code: qG, x=year code, y=week code, z= lot number code)
The SY8120I is a high efficiency, synchronous stepdown DC/DC converter capable of delivering 2A load current. The SY8120I operates over a wide input voltage range from 4.2V to 18V and integrates main switch and synchronous switch with very low RDS(ON) to minimize the conduction loss. The SY8120I adopts the instant PWM architecture to achieve fast transient responses for high step down applications and high efficiency at light loads. In addition, it operates at a pseudo-constant frequency of 500kHz to minimize the size of inductor and capacitor.
Features:
Low Rds(on) for internal switches (Top/Bottom): 130mΩ/105mΩ
4.2-18V input voltage range
2A output current capability
500kHz switching frequency minimizes the external components
Stable with 10µF COUT and 1.5µH inductor
Instant PWM architecture to achieve dast transient responses
Internal soft-start limits the inrush current
Cycle-by-cycle peak/valley current limitation
Hic-cup mode output short circuit protection
Thermal shutdown with auto-recovery
Compact package SOT23-6
Applications:
Set-Top Box, Portable TV, DSL Modem, LCD TV, IP CAM, Networking, etc.
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