S-8351A60MC-J3TT2U datasheet, PDF

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S-8351A60MC-J3TT2U: DescriptionSwitching Voltage Regulators STPUP SWR PFM 100KHZ 23.2UA IQ; Categorysemiconductor Power management; File Size624KB，52 Pages; ManufacturerSeiko-Instruments

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S-8351A60MC-J3TT2U Overview

Switching Voltage Regulators STPUP SWR PFM 100KHZ 23.2UA IQ

S-8351A60MC-J3TT2U Parametric

Parameter Name	Attribute value
Product Category	Switching Voltage Regulators
Manufacturer	Seiko-Instruments
RoHS	Details
Mounting Style	SMD/SMT
Package / Case	SOT-23-5
Topology	Boost
Packaging	Reel
Factory Pack Quantity	3000
Type	Step-Up Regulator
Unit Weight	0.000222 oz

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S-8351/8352 Series

www.ablicinc.com

STEP-UP, BUILT-IN / EXTERNAL FET PFM CONTROL SWITCHING

REGULATOR / SWITCHING REGULATOR CONTROLLER

Rev.3.0

_02

The S-8351/8352 Series is a CMOS step-up switching regulator controller which mainly consists of a reference voltage

source, an oscillation circuit, a comparator and PFM control circuit. The PFM control circuit allows the duty ratio to be

automatically switched according to the load (at light load : 50%, at high output current : 75%), enabling products with a low

ripple over a wide range, high efficiency, and high output current (A, B, and D type). Products with a fixed duty ratio of 75%

are also available (C type).

The S-8351 Series can configure a step-up switching regulator with an external coil, capacitor, and diode. A protection

circuit turns off the built-in MOS FET when the voltage at the CONT pin exceeds the limit to prevent it from being damaged.

In addition to the above features, the small package and low current consumption, makes the S-8351 Series ideal for

applications such as the power supply unit of portable equipment.

The S-8352 Series, which features an external transistor, is suitable for applications requiring a high output current.



Features

• Low voltage operation : Startup at 0.9 V min. (I

OUT

= 1 mA) guaranteed

• Low current consumption : During operation 23.2



A (V

OUT

= 3.3 V, typ.)

During shutdown 0.5



A (max.)

• Duty ratio : 50 % / 75 % built-in auto-switching-type PFM control circuit (A, B, and D type)

75 % built-in fixed-type PFM control circuit (C type)

• External parts : Coil, capacitor, and diode

• Output voltage : Selectable in 0.1 V steps between 2.0 V to 6.5 V (A, B, and C type)

Selectable in 0.1 V steps between 1.5 V to 6.5 V (D type)

• Output voltage accuracy :

2.4%

• Shutdown function (A type)

• V

/ V

OUT

separate type (D type)

• External transistor type available (S-8352 Series)

• Lead-free, Sn 100%, halogen-free

*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, video equipment, and communications equipment

• Power supplies for microcomputers



Packages

• SOT-23-3

• SOT-23-5

• SOT-89-3

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