Technical Note

2/16

www.rohm.com

2011.03 - Rev.A

© 2011 ROHM Co., Ltd. All rights reserved.

BH6172GU

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Recommended Operating Conditions (Ta=25℃)

Parameter

Symbol

Ratings

Unit

VBAT Voltage

VBAT

2.20 ～ 5.50*

2

V

PBAT Voltage

VPBAT

2.20 ～ 5.50*

2

V

VUSB Voltage

VUSB

2.20 ～ 5.50*

V

DVDD Voltage

VDVDD

1.70 ～ 4.20*

4

V

*2 Whenever the VBAT or PBAT or VUSB voltage is under the LDO, SWREG output voltage,

or else under certain levels, the LDO and SWREG output is not guaranteed to meet its published specifications.

*3 VUSB Power Supply can be externally connected to the VBAT, PBAT Power Supply when necessary.

*4 The DVDD Voltage must be under the Battery Voltage VBAT, PBAT at any times.

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Electrical Characteristics (Unless otherwise specified, Ta=25℃, VBAT=PBAT =3.6V, VUSB=5.0V)

Parameter

Symbol

Limits

Unit

Condition

Min.

Typ.

Max.

Circuit Current

VBAT Circuit Current 1

(OFF)

IQVB1

-

0.4

1

µA

LDO1～5=OFF

SWREG1=OFF

NRST=L

DVDD=0V

VUSB Circuit Current 1

(OFF)

IQUSB1

-

0

1

µA

VBAT Circuit Current 2

(OFF)

IQVB2

-

0.4

1

µA

LDO1～5=OFF

SWREG1=OFF

NRST=L

DVDD=0V

VUSB=VBAT external connection

VBAT Circuit Current 3

(STANDBY)

IQVB3

-

0.7

1.4

µA

LDO1～5=OFF

SWREG1=OFF

NRST=H

DVDD=2.6V

VUSB Circuit Current 2

(STANDBY)

IQUSB2

-

0

1

µA

VBAT Circuit Current 4

(STANDBY)

IQVB4

-

0.7

1.4

µA

LDO1～5=OFF

SWREG1=OFF

NRST=H

DVDD=2.6V

VUSB=VBAT external connection

VBAT Circuit Current 5

(Active)

IQVB5

-

170

300

µA

LDO1～5=ON(no load, initial voltage)

SWREG1=ON(no load, initial voltage)

NRST=H

DVDD=2.6V

VUSB Circuit Current 3

(Active)

IQUSB3

-

35

70

µA

VBAT Circuit Current 6

(Active)

IQVB6

-

200

350

µA

LDO1～5=ON(no load, initial voltage)

SWREG1=ON(no load, initial voltage)

NRST=H

DVDD=2.6V

VUSB=VBAT external connection

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This product is not especially designed to be protected from radioactivity.