Datasheet > BD2204GUL

BD2204GUL

更新时间： 2024-01-09 02:28:03

品牌	Logo	应用领域
罗姆 - ROHM		开关
页数	文件大小	规格书
24页	645K
描述
Power Supply Selector Switch IC for SD Cards

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中文翻译

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数据手册

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BD2204GUL 数据手册

Daattaasshheeeett

BD2204GUL

^*3When the switch changes from VIN1 to VIN2 or from VIN2 to VIN1, it is possible that VOUT voltage drops.

Dropped voltage of VOUT is specified as Voutdrop1 and Voutdrop2.

That voltage drop is caused by the function which prevents VIN1 and VIN2 from turning on simultaneously.

This function generates the period which both VIN1and VIN2 are turned off, and prevents the penetration

current between VIN1 and VIN2.

VOUT=VIN2→VIN1

VOUT=VIN1→VIN2

VIN(3.3V)

Min. 1.4V

VIN(3.3V)

Min. 1.4V

VIN2(1.8V)

VOUT

VIN2(1.8V)

Voutdrop1

Voutdrop2

OUT1

(Internal Signal)

OUT2

(Internal Signal)

T_D2

T_D1

T_COMP

Figure 4. Vout drop voltage

*TD1 and TD2 + TCOMP are period of Simultaneous-Off.

*TCOMP is period of VOUT becoming same voltage as VIN2.

*The value of Min. is in condition of IOUT=500mA and CL=15uF.

●Measurement Circuit

VIN1

VOUT

VIN2

VOUT

VIN1

CIN

VIN2

GND

SEL

VIN2

GND

SEL

VEN

VSEL

Operating current, Standby current

EN, SEL input voltage, Output rise, fall time

VIN1

VOUT

VIN1

VOUT

VIN1

CIN

VIN2

CIN

VIN2

1mA

↑

↓

VIN2

GND

SEL

VIN2

GND

SEL

VEN

VSEL

On-resistance, VOUT drop voltage

Discharge resistance

Figure 5. Measurement circuit

www.rohm.com

TSZ02201-0E3E0H300030-1-2

07.Aug.2012 Rev.001

4/21

TSZ22111・15・001

1 2 345 6 7...24

中文翻译

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