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S-9366AAAAAI6TIG2 Datasheet(PDF) 1 Page - Seiko Instruments Inc |
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S-9366AAAAAI6TIG2 Datasheet(HTML) 1 Page - Seiko Instruments Inc |
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1 / 63 page  Rev.1.1_00 STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER S-8365/8366 Series Seiko Instruments Inc. 1 The S-8365/8366 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 timer latch short-circuit protection circuit, a PWM control circuit (S-8365 Series) and a PWM / PFM switching control circuit (S-8366 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-8365 Series efficiently works on voltage’s condition of large I/O difference due to the PWM control circuit linearly varies the duty ratio to 90%. During light-load, the S-8366 Series switches its operation to the PFM control by the PWM / PFM switching control circuit in order to prevent efficiency decline due to the IC operating current. Ceramic capacitors can be used for output capacitor. Small packages SNT-6A, SOT-23-5 and SOT-23-6 enable high-density mounting. Features • Low operation voltage : Start at 1.1 V (1 mA) guaranteed (in the product without UVLO function) • Input voltage range : 1.8 V to 5.5 V • Oscillation frequency : 1.2 MHz, 600 kHz • Reference voltage : 0.6 V ±2.0% • Soft start function : 7 ms typ. • Low current consumption : 70 µA typ. at switching off • Duty ratio : Built-in PWM / PFM switching control circuit (S-8366 Series) 28% to 85% (1.2 MHz product) 28% to 90% (600 kHz product) • Shutdown function : Current consumption 1.0 µA max. at shutdown • External parts : Inductor, diode, capacitor, transistor • Timer latch short-circuit protection circuit : Selectable with / without short-circuit protection circuit for each product Settable delay time by external capacitor (in the product with short-circuit protection) • UVLO (under-voltage lockout) function : Selectable with / without UVLO for each product • Small packages : SNT-6A, SOT-23-5, SOT-23-6 • Lead-free product Applications • MP3 players, digital audio players • Digital cameras, GPS, wireless transceiver • Portable devices Packages Drawing code Package name Package Tape Reel Land SNT-6A PG006-A PG006-A PG006-A PG006-A SOT-23-5 MP005-A MP005-A MP005-A − SOT-23-6 MP006-A MP006-A MP006-A − |
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