FEATURES
• Operating Voltage (Maximum Rating) ··············· 3.6 V to 34 V (36 V)
• Consumption Current ··································· Typ. 18μA (VIN = 12 V)
• Stand-by Current ·········································· Typ. 0μA (VIN = 34 V, CE= 0 V)
• Output Voltage ············································· Externally-adjustable at 0.8 V or more
(Max. step down ratio 160ns  fosc)
• Feedback Voltage and Tolerance ····················· 0.8 V  1.0%
• Output Current ············································· 3A(1)
• Operating Frequency ···································· 300kHz to 2.4MHz settable by external resistor
• Minimum Off Time ········································ Typ. 120ns
• Maximum Duty ············································· Min. 93% (fosc = 300kHz), Min. 67% (fosc = 2400kHz)
• UVLO Function Detection Voltage ···················· Typ. 2.6 V
• OVLO Function Detection Voltage ·················· Min. 38 V
• Soft-start Time ············································· Internal soft-start time (Typ. 0.4ms), as a lower limit,
Externally-adjustable by using capacitor
• High-side Switch Current Limit ························ Typ. 4.5A, as a upper limit,
Externally-adjustable by using resistor
• Thermal Shutdown Function ··························· Typ. 160C
• CE Threshold Voltage ··································· Typ. 1.0 V
• Latch Protection Delay Time ··························· Typ. 2ms (R1270S001A)
• Fold-back Protection ····································· Fold-back for oscillation frequency
• VFB Voltage Temperature Tolerance (ΔVFB/ΔTa)· ·· Typ. ±100ppm/°C (−40°C ≤ Ta ≤ 125°C)
• Packages ··················································· HSOP-18