ABLIC S-8357B27MC-NIMT2G

The S-8355/56/57/58 Series is a CMOS step-up switching regulator controller which mainly consists of a reference voltage source, an oscillation circuit, an error amplifier, a phase compensation circuit, a PWM control circuit (S-8355/57 Series) and a PWM/PFM switching control circuit (S-8356/58 Series). With an external low-ON-resistance Nch Power MOS, this product is ideal for applications requiring high efficiency and a high output current. The S-8355/57 Series realizes low ripple, high efficiency, and excellent transient characteristics due to its PWM control circuit whose duty ratio can be varied linearly from 0 to 83% (from 0 to 78% for 250 kHz, 300 kHz, and 600 kHz models), an excellently designed error amplifier and a phase compensation circuits. S-8356/58 Series features a PWM/PFM switching controller that can switch the operation to a PFM controller with a duty ratio is 15% under a light load to prevent a decline in the efficiency due to the IC operating current.

• Low voltage operation: Startup at 0.9 V min. (I_OUT = 1 mA) guaranteed
• Low current consumption: During operation 25.9 μA (3.3 V, 100 kHz, typ.), During shutdown 0.5 μA (max.)
• Duty ratio: Built-in PWM/PFM switching control circuit (S-8356/58 Series) 15 to 83% (100 kHz models), 15 to 78% (250 kHz, 300 kHz, and 600 kHz models)
• External parts: Coil, diode, capacitor, and transistor
• Output voltage: Selectable in 0.1 V steps between 1.5 and 6.5 V (for V_DD / V_OUT separate types), Selectable in 0.1 V steps between 2.0 and 6.5 V (for other than V_DD / V_OUT separate types)
• Output voltage accuracy: ±2.4%
• Oscillation frequency: 100 kHz, 250 kHz, 300 kHz, 600 kHz selectable
• Soft start function: 6 ms (100 kHz, typ.)
• Shutdown function
• Lead-free, Sn 100%, halogen-free

• Power supplies for portable equipment such as digital cameras, electronic notebooks, and PDAs
• Power supplies for audio equipment such as portable CD / MD players
• Constant voltage power supplies for cameras, VCRs, and communications devices
• Power supplies for microcomputers