MAX668-MAX669 PDF File ( Datasheet )

19-4778; Rev 0a; 8, 98 L MANUA ION KIT HEET T A U L EVA TA S WS DA FOLLO 1.8V to 28V Input, PWM Step-Up Controllers in MAX Features o 1.8V Minimum Start-Up Voltage (MAX669) o Wide Input Voltage Range (1.8V to 28V) o Tiny 10-Pin MAX Package o Current-Mode PWM and Idle Mode™ Operation o Efficiency over 90% o Adjustable 100kH- to 500kH- Oscillator or SYNC Input o 220 A Quiescent Current o Logic-Level Shutdown o Soft-Start General Description The MAX668, MAX669 constant-frequency, pulse-width