ELECTRICAL CHARACTERISTICS (Refer to the test and application circuit, VCC = 13.2V, Tamb =25

°C,

unless otherwise specified.)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

OPERATING CONDITIONS

VCC

Operating supply voltage

10

13.2

17

V

VSB(off)

VSB(on)

Input voltage of VSB pin

VSB:L

VSB:H

0

3.5

1.5

VCC

V

V

ISB1(on)

ISB2(on)

Input current of VSB pin

VSB =5V

VCC = 14.4V, VSB = 14.4V

10

200

µA

µA

VDM(off)

VDM(on)

Input voltage VDM pin

VDM: L (Normal)

VDM: H (Dimmer)

0

3.5

1.5

VCC

V

V

IDM1(on)

IDM2(on)

Input current of VDM pin

VDM =5V

VCC = 14.4V, VDM = 14.4V

10

200

µA

µA

STEP UP VOLT AGE

VDC-N1

VDC voltage

VDM:L (Normal)

440

460

480

V

VDC-N2

VDM: H (Dimmed)

400

420

445

V

EL OUTPUT BLOCK

ICP-N1

EL charge current

VDM:L (Normal)

14.5

17.5

mA

ICP-N4

VCC = 10V

14.5

17.5

mA

ICP-N5

VCC = 17V

14.5

17.5

mA

ICP-D1

VDM:H (Dimmer)

9

11

mA

N1/P1-N

ICN1-N to ICP1-N ratio

VDM:L (Normal)

2.05

2.45

2.7

—

N2/P2-N

ICN2-N to ICP2-N ratio

2.05

2.45

2.7

—

N1/P1-D

ICN1-D to ICP1-D ratio

VDM:H (Dimmer)

2.05

2.45

2.7

—

N2/P2-D

ICN2-D to ICP2-D ratio

2.05

2.45

2.7

—

TON

Output time of ICP

118

125

132

µs

fEL

EL switching frequency

900

1000

1100

Hz

VDIF

VDC-VEL(peak)

CEL: 4nF

2.5

5

V

VEL-G

VEL of GND side voltage

When EL charge

2.5

5

V

OSCILLATION CIRCUIT

fCLK

Internal oscillation frequency

29

32

35

kHz

GATE CONTROL CIRCUIT

Duty

Switching FET on-time

maximum ratio

70

75

80

%

Vg-on

High voltage for external

switching FET on

10

11.8

VCC-0.5

V

Vg-off

Low voltage for external

switching FET on

1.5

V

TDA7475A

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