S-8327H30MC-FWK-T2 datasheet, PDF

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S-8327H30MC-FWK-T2: DescriptionSwitching Controller, Voltage-mode, 0.05A, 287.5kHz Switching Freq-Max, CMOS, PDSO5, PLASTIC, SOT-23, 5 PIN; CategoryPower/power management The power supply circuit; File Size741KB，57 Pages; ManufacturerSII Semiconductor Corporation

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S-8327H30MC-FWK-T2 Overview

Switching Controller, Voltage-mode, 0.05A, 287.5kHz Switching Freq-Max, CMOS, PDSO5, PLASTIC, SOT-23, 5 PIN

S-8327H30MC-FWK-T2 Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	SII Semiconductor Corporation
package instruction	LSSOP, TSOP5/6,.11,37
Reach Compliance Code	unknown
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER
control mode	VOLTAGE-MODE
Control Technology	PULSE WIDTH MODULATION
Maximum input voltage	9 V
Minimum input voltage	1.2 V
Nominal input voltage	1.8 V
JESD-30 code	R-PDSO-G5
length	2.9 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	5
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Maximum output current	0.05 A
Package body material	PLASTIC/EPOXY
encapsulated code	LSSOP
Encapsulate equivalent code	TSOP5/6,.11,37
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	225
Certification status	Not Qualified
Maximum seat height	1.3 mm
surface mount	YES
Switch configuration	SINGLE
Maximum switching frequency	287.5 kHz
technology	CMOS
Temperature level	INDUSTRIAL
Terminal form	GULL WING
Terminal pitch	0.95 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	1.6 mm

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Rev. 7.2

_20

SMALL PACKAGE PWM CONTROL

STEP-UP SWITCHING REGULATOR

S-8323/8327 Series

Features

•

Low voltage operation:

0.9 V(I

OUT

=1 mA, 50 kHz and 100 kHz models)

Low current consumption :

During operation: 17.2

µA

(typ.)

OUT

= 3 V, 50 kHz)

During shutdown: 0.5

µA

(max.)

Duty ratio: Built-in PWM control circuit

External parts:

•

coil, diode, and capacitor only

(a transistor is needed for the S-8327 Series.)

Applications

•

Block Diagram

(1) S-8323 Series (Types A, C, H)

CONT

VOUT

Power supplies for portable equipment such as pagers, handy calculators, and remote controllers

Constant voltage power supplies for cameras, video equipment, and communications equipment

Power supply for microcomputers

Output voltage: accuracy of

±2.4%

PWM

control

circuit

Soft start

circuit

ON/ OFF

Soft start

circuit

(2) S-8327 Series (Types B, H)

VOUT

VREF

PWM

control

circuit

EXT

Soft start

circuit

VSS

VREF

The S-8323/8327 Series is a CMOS PWM-control step-up switching

regulator which mainly consists of a reference voltage source, an oscillation

circuit, a power MOS FET (for S-8323 Series) , and an error amplifier.

Equipped with best-designed control circuits, the products maintain high

efficiency over a wide range of conditions with the capability of automatically

controlling the duty ratio from 0% to 83% (78% for 250 kHz model)

according to each applied load. A step-up switching regulator is constructed

by externally connecting only a coil, a capacitor and a diode to the S-8323

Series. This feature, along with its small package and low current

consumption, makes the S-8323 Series ideal for the power supply of

portable equipment. For applications requiring a high output current,

products used with an external transistor (S-8327 Series) are also available.

Oscillation frequency: 30 kHz, 50 kHz, 100 kHz, and

250 kHz

Software start function is built-in

External transistor type is available (S-8327 Series)

SOT-23-5 small plastic package

SOT-23-3 small plastic package

SOT-89-3 miniature power molded plastic package

Step-down and voltage-inverting type are available.

Shutdown function

VSS

ON/ OFF

(3) S-8323 Series (Types D, J)

CONT

VDD

PWM

control

circuit

Soft start

circuit

VOUT

VDD

VREF

(4) S-8327 Series (Types E, J)

VOUT

EXT

PWM

control

circuit

VREF

VSS

Figure 1 Block Diagram

Seiko Instruments Inc.

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