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S-8356KxxMC Datasheet(PDF) 1 Page - Seiko Instruments Inc |
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S-8356KxxMC Datasheet(HTML) 1 Page - Seiko Instruments Inc |
1 / 72 page S-8355/56/57/58 Series www.sii-ic.com STEP-UP, SUPER-SMALL PACKAGE, 600 kHz, PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER © SII Semiconductor Corporation, 2002-2015 Rev.8.1_01 1 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. Features • Low voltage operation : Startup at 0.9 V min. (IOUT = 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 VDD / VOUT separate types) Selectable in 0.1 V steps between 2.0 and 6.5 V (for other than VDD / VOUT 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*1 *1. Refer to “ Product Name Structure” for details. Applications • 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 Packages • SOT-23-3 • SOT-23-5 • SOT-89-3 |
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