Silergy SY7065
The SY7065/SY7065A is a high efficiency synchronous Boost regulator that converts down to 1.8V input and up to 5.5V output voltage. It adopts NMOS for the main switch and PMOS for the synchronous switch. It can disconnect the output from input during the shutdown mode.GENERAL DESCRIPTION
Ordering Information SY7065 □(□□)□ Temperature Code Package Code Optional Spec Code Ordering Number Package type Note SY7065QMC QFN2×2-10 ---- SY7065AQMC QFN2×2-10 ----FEATURES
● 1.8V Minimum Input Voltage● Adjustable Output Voltage from 2.5V to 5.5V
● 5A Peak Current Limit
● Input Under Voltage Lockout
● Load Disconnect during Shutdown
● Output Over Voltage Protection
● Input Battery Voltage Monitor
● Automatic Output Discharge at Shutdown: SY7065: Auto Output Discharge Function SY7065A: No Output Discharge Function
● Low RDS(ON) (Main Switch/Synchronous Switch) at 5.0V Output: 20/40mΩ
● Compact Package: QFN2×2-10
APPLICATIONS
● All Single-cell Li or Dual-cell Battery Operated Products as MP-3 Player, PDAs, and Other Portable Equipment TypicalAPPLICATIONS
VIN:1.8V~5.0V C1 22uF C2 22uF R5 100kΩ LBO IN SVOUT C6 C8 1uF 4.7uF R3 300kΩ L1 LX PVOUT 1.5uH LBI R4 FB 50kΩ EN PGND SGND R1 470kΩ R2 148.4kΩ VOUT=5V C4 22uF C9 100uF Figure 1. Schematic Diagram Efficiency (%) 100 98 96 94 92 90 88 86 84 0.0 Efficiency vs.