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S-8366ABABB-M6T1S2 Datasheet(PDF) 1 Page - Seiko Instruments Inc

Part # S-8366ABABB-M6T1S2
Description  STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
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Manufacturer  SII [Seiko Instruments Inc]
Direct Link  http://www.sii.co.jp
Logo SII - Seiko Instruments Inc

S-8366ABABB-M6T1S2 Datasheet(HTML) 1 Page - Seiko Instruments Inc

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S-8365/8366 Series
www.sii-ic.com
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or
PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER
© SII Semiconductor Corporation, 2009-2015
Rev.2.1_01
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 FET, 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
• Lead-free, Sn 100%, halogen-free*1
*1. Refer to “ Product Name Structure” for details.
Applications
• MP3 players, digital audio players
• Digital cameras, GPS, wireless transceiver
• Portable devices
Packages
• SNT-6A
• SOT-23-5
• SOT-23-6


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