S-8351C35UA-J6UT2U datasheet, PDF

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S-8351C35UA-J6UT2U: DescriptionIC REG CTRLR BOOST SOT89-3; CategoryPower/power management The power supply circuit; File Size604KB，51 Pages; ManufacturerABLIC

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S-8351C35UA-J6UT2U Overview

IC REG CTRLR BOOST SOT89-3

S-8351C35UA-J6UT2U Parametric

Parameter Name	Attribute value
Maker	ABLIC
package instruction	SOT-89, 3 PIN
Reach Compliance Code	compliant
ECCN code	EAR99
Analog Integrated Circuits - Other Types	SWITCHING REGULATOR
Control Technology	PULSE FREQUENCY MODULATION
Maximum input voltage	10 V
JESD-30 code	R-PSSO-F3
length	4.5 mm
Number of functions	1
Number of terminals	3
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Nominal output voltage	3.5 V
Package body material	PLASTIC/EPOXY
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Maximum seat height	1.6 mm
surface mount	YES
Switch configuration	BOOST
Maximum switching frequency	100 kHz
technology	CMOS
Temperature level	INDUSTRIAL
Terminal form	FLAT
Terminal pitch	1.5 mm
Terminal location	SINGLE
width	2.5 mm

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S-8351/8352 Series

www.ablic.com

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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