The R1240x/R1244N Series are 30V input, CMOS-based PWM step-down DC/DC converters featuring 1.2A∗ output current. R1240x/R1244N include a soft start circuit and a latch or a fold-back protection circuit.

FEATURES
• Operating Voltage ·········································4.5 V to 30 V
• Internal Nch MOSFET Driver ·····························Typ. RON = 0.35 Ω
• Adjustable Output Voltage with External Resistor ···0.8 V to 15 V
• Feedback Voltage············································0.8 V ±1.5%
• Peak Current Limit Function ······························Typ. 2.0 A
• UVLO Function
• Operating Frequency ·······································1.25 MHz (Ver. B: 310 kHz, Fold-back Condition)
• Short Protection for Output ································Ver. A: Latch with 2 ms delay or Ver. B: Fold-back
• Ceramic Capacitor Compatible
• Stand-by Function ···········································Typ. 0 µA
• Package························································SOT-23-6W, DFN(PLP)2527-10

APPLICATIONS
• Digital Home Appliances: Digital TVs, DVD Players
• OA Equipment: Printers, Fax
• Hand-held Communication Equipment, Cameras, VCRs, Camcorders
• Battery-powered Equipment