Features

• Maximum Ratings

⎯ Supply voltage Vcc: 24 V

⎯ Junction temperature Tj: from –40 to +150 degrees centigrade

• Electrical characteristics

⎯ VFB feedback voltage VREF: 2.5 V ± 1.5

⎯ UVLO (Undervoltage Lockout) operation start voltage VH: 10.4 V ± 0.7 V

⎯ UVLO operation shutdown voltage VL: 8.9 V ± 0.5 V

⎯ UVLO hysteresis voltage Hysuvl : 1.5 V ± 0.5 V

• Functions

⎯ Boost converter control with continuous conduction mode

⎯ Interleaving control

⎯ Frequency modulation (*2)

⎯ Brownout

⎯ Phase drop (*1)

⎯ External clock synchronization input

⎯ External clock synchronization output (*1)

⎯ Two modes of over voltage protections

Mode 1: Dynamic OVP preventing over voltage after sudden variation of load.

Mode 2: Static OVP preventing over voltage in the period of normal operation.

⎯ Feedback loop wire breaking/open detector

⎯ Dual over voltage protection circuits (*1): FB and OVP2 terminals

⎯ Current balance control

⎯ Phase 1 and Phase 2 independent over current protection

⎯ Package line-up

Pb-free LQFP-40 (R2A20104FP, R2A20114FP)

Pb-free SOP-20 (R2A20104SP, R2A20114SP)