BD26502GUL-E2 datasheet(2/40 Pages) ROHM

Part #	BD26502GUL-E2

Description	7x17(Max.) Dot Matrix LED Display Driver

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Manufacturer	ROHM [Rohm]

Direct Link	http://www.rohm.com

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Technical Note

2/39

BD26502GUL

www.rohm.com

2010.02 - Rev.A

●

Electrical Characteristics (Unless otherwise specified, Ta=25°C, VBAT=3.6V, VINSW=3.6V, VIO=1.8V)

Parameter

Symbol

Limit

Unit

Condition

Min.

Typ.

Max.

[ Circuit Current ]

VBAT Circuit current 1

IBAT1

-

0

3.0

μA

RESETB=0V, VIO=0V

VBAT Circuit current 2

IBAT2

-

0.8

5.0

μA

RESETB=0V, VIO=1.8V

VBAT Circuit current 3

IBAT3

-

2.0

3.5

mA

When LED1-17 are active

with default settings.

[ UVLO ]

UVLO Threshold

VUVLO

-

2.1

2.5

V

VBAT falling

UVLO Hysteresis

VHYUVLO

50

-

mV

[ LED Driver ] (LED1-17)

Maximum output current

ILEDMax

-

20.00

-

mA LED1-17 ,ISET＝100kΩ

Output current

ILED

-7.0%

10.67

+7.0%

mA I=10.67mA setting, VLED=1V

LED current Matching

ILEDMT

-

5

%

ILEDMT=

(ILEDMax-ILEDMin)/(ILEDMax+ILEDMin)

I=10.67mA setting, VLED=1V

Driver pin voltage range

VLED

0.2

-

VBAT- 1.4

V

LED OFF Leak current

ILKLED

-

1.0

μA

[ PMOS switch ]

Leak current at OFF

ILEAKP

-

1.0

μA

Resistor at ON

RonP

-

1.0

-

Ω

Isw=170mA, VINSW=4.5V

[ OSC ]

OSC frequency

fosc

0.96

1.2

1.44

MHz

[ CE, SYNC, CLKIN, IFMODE ]

L level input voltage

VIL1

-0.3

-

0.25 x VIO

V

H level input voltage

VIH1

0.75 x VIO

-

VIO +0.3

V

L level input current

IIL1

-

0

1

μA

H level input current

IIH1

-

0

1

μA

[ SDA, SCL ]

L level input voltage

VIL2

-0.3

-

0.25 x VIO

V

H level input voltage

VIH2

0.75 x VIO

-

VIO +0.3

V

Input hysteresis

Vhys

0.05 x VIO

-

V

L level output voltage

(for SDA pin)

VOL2

0

-

0.3

V

At 3mA sink current

Input current

Iin1

-3

-

3

μA

Input voltage = from (0.1 x VIO) to (0.9 x VIO)

[ RESETB ]

L level input voltage

VIL3

-0.3

-

0.25 x VIO

V

H level input voltage

VIH3

0.75 x VIO

-

VIO +0.3

V

Input current

Iin2

-

0

1

μA

Input voltage = from (0.1 x VIO) to (0.9 x VIO)

[ CLKOUT ]

L level output voltage

VOL1

-

0.4

V

IOL=2mA

H level output voltage

VOH1

0.75 x VIO

-

V

IOH=-2mA

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