W-52 datasheet(4/11 Pages) COPAL

Part #	W-52

Description	CMOS White LED Driver

Download	11 Pages

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Manufacturer	COPAL [Copal Electronics]

Direct Link	http://www.nidec-copal-electronics.com/e

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4 / 11 page

W-52

4

TYPICAL CHARACTERISTICS

(VIN = 3.6 V, TAMB =25 C, CIN = 4.7 F, COUT =1 F, L = 6.8 H, unless otherwise specified.)

Figure 2. Quiescent Current vs. Input Voltage

Figure 3. Quiescent Current vs. Temperature

(

E

R

U

T

A

R

E

P

M

E

T

)

V

(

E

G

A

T

L

O

V

T

U

P

N

I

C)

7

6

5

4

3

2

200

300

400

500

600

125

100

75

50

25

0

25

50

200

300

400

500

600

Figure 4. Switching Frequency vs. Input

Voltage

Figure 5. Switching Frequency vs.

Temperature

(

E

R

U

T

A

R

E

P

M

E

T

)

V

(

E

G

A

T

L

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C)

7

6

5

4

3

2

0

0.4

0.8

1.2

1.6

2.0

100

125

75

50

25

0

25

50

0

0.4

0.8

1.2

1.6

2.0

Figure 6. LED Current vs. Input Voltage

Figure 7. LED Current vs. Temperature

(

E

R

U

T

A

R

E

P

M

E

T

)

V

(

E

G

A

T

L

O

V

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U

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N

I

C)

7

6

5

4

3

2

0

5

10

15

20

25

30

35

125

100

75

50

25

0

25

50

0

5

10

15

20

VIN = 2 V

VIN = 7 V

RSET = 750

RSET = 1.13 k

RSET = 1.50 k

RSET = 2.26 k

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