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S-8533A33AFT-TB-U: 产品描述Switching Controllers 3.3V Step-Down PWM; 产品类别半导体电源管理; 文件大小479KB，共34页; 制造商Seiko-Instruments

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S-8533A33AFT-TB-U概述

Switching Controllers 3.3V Step-Down PWM

S-8533A33AFT-TB-U规格参数

参数名称	属性值
Product Attribute	Attribute Value
制造商 Manufacturer	Seiko-Instruments
产品种类 Product Category	Switching Controllers
RoHS	Details
Number of Outputs	1 Output
Switching Frequency	300 kHz
占空比 - 最大 Duty Cycle - Max	100 %
Input Voltage	2.7 V to 16 V
Output Voltage	3.3 V
最小工作温度 Minimum Operating Temperature	- 40 C
最大工作温度 Maximum Operating Temperature	+ 85 C
安装风格 Mounting Style	SMD/SMT
封装 / 箱体 Package / Case	TSSOP-8
系列 Packaging	Reel
工厂包装数量 Factory Pack Quantity	3000

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S-8533 Series

www.ablicinc.com

STEP-DOWN, SYNCHRONOUS PWM CONTROL

SWITCHING REGULATOR CONTROLLER

Rev.3.0

_02

The S-8533 Series is a synchronous PWM control CMOS step-down switching regulator controller that includes a reference

voltage source, synchronous circuit, oscillation circuit, error amplifier, phase compensation circuit, and PWM controller.

An efficient step-down switching regulator can be realized simply by adding external P-channel and N-channel power MOS

FETs, one coil, and three capacitors.

Since the oscillation frequency is a high 300 kHz, the S-8533 can be used to configure a high efficiency step-down switching

regulator capable of driving high output current using small external parts and a 3 to 10% increase in efficiency is obtained

compared to conventional step-down switching regulators.

The 8-Pin TSSOP package and high oscillation frequency make the S-8533 ideal as the main power supply for portable

devices.



Features



Synchronous rectification system realizing high efficiency (typ. 94%)



Use at maximum duty ratio = 100% and use of a battery up to maximum life is possible by using P-channel and N-

channel power MOS FETs externally.



Oscillation frequency :

300 kHz typ.



Input voltage :

2.7 to 16.0 V



Output voltage :

1.25 V

1.3 to 6.0 V, selectable in 0.1 V steps



Output voltage accuracy :

2.0%



Soft-start function set by an external capacitor (C

)



Shutdown function



Lead-free, Sn 100%, halogen-free

*1.

Refer to “

Product Name Structure”

for details.



Applications



Constant voltage power supply for hard disks and DVD drivers

Power supplies for portable devices, such as digital cameras, PDAs, electronic organizers, and cellular phones

Main or sub power supply for notebook PCs and peripherals

Constant voltage power supply for cameras, video equipment, and communication equipment



Package



8-Pin TSSOP

S-8533A33AFT-TB-U相似产品对比

	S-8533A33AFT-TB-U	S-8533A15AFT-TB-U	S-8533A28AFT-TB-U	S-8533A18AFT-TB-U
描述	Switching Controllers 3.3V Step-Down PWM	Switching Controllers 1.5V Step-Down PWM	Switching Controllers SYNC PWM CTRL STPDWN CTRLLR	Switching Controllers 1.8V Step-Down PWM
Product Attribute	Attribute Value	Attribute Value	Attribute Value	Attribute Value
制造商 Manufacturer	Seiko-Instruments	Seiko-Instruments	Seiko-Instruments	Seiko-Instruments
产品种类 Product Category	Switching Controllers	Switching Controllers	Switching Controllers	Switching Controllers
RoHS	Details	Details	Details	Details
封装 / 箱体 Package / Case	TSSOP-8	TSSOP-8	TSSOP-8	TSSOP-8
工厂包装数量 Factory Pack Quantity	3000	3000	3000	3000
Number of Outputs	1 Output	1 Output	-	1 Output
Switching Frequency	300 kHz	300 kHz	-	300 kHz
占空比 - 最大 Duty Cycle - Max	100 %	100 %	-	100 %
Input Voltage	2.7 V to 16 V	2.7 V to 16 V	-	2.7 V to 16 V
Output Voltage	3.3 V	1.5 V	-	1.8 V
最小工作温度 Minimum Operating Temperature	- 40 C	- 40 C	-	- 40 C
最大工作温度 Maximum Operating Temperature	+ 85 C	+ 85 C	-	+ 85 C
安装风格 Mounting Style	SMD/SMT	SMD/SMT	-	SMD/SMT
系列 Packaging	Reel	Reel	Reel	Reel

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