Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Unit

Power Supply Current

Output off

6 – 8

(7 – 8)

―

1

1.5

mA

Normal operation

6 – 8

(7 – 8)

―

2.5

4.0

mA

Output MOSFET Breakdown Voltage

5 – 4

(5, 6 – 4)

250

――

V

LC5225D/S

450

――

V

Output MOSFET On-Resistance

5 – 4

(5, 6 – 4)

―

1.2

2.2

Ω

―

3.5

6

Ω

Body Diode Forward Voltage

4 − 5

(4 – 5, 6)

―

0.8

1.0

V

―

0.8

0.9

V

UVLO Threshold (Turn on)

VBB pin voltage

6 – 8

(7 – 8)

―

14

―

V

UVLO Threshold (Turn off)

VBB pin voltage

6 – 8

(7 – 8)

―

12

―

V

REG Pin Output Voltage

1 − 8

9.6

10

10.4

V

REG Pin Output Current

1 − 8

−2

――

mA

Enable Output Threshold Voltage

REF pin voltage

3 − 8

―

0.15

0.19

V

Sleep Mode Threshold Voltage

REF pin voltage

3 − 8

2.85

3.0

―

V

REF Pin Current

3 − 8

−10

―

10

μA

4 − 8

− 0.03

+ 0.03

V

0.77

0.8

0.83

V

4 − 8

―

+ 0.7

―

V

―

1.5

―

V

SEN Pin Current

4 − 8

−10

―

10

μA

PWM Pin Low Voltage

2 − 8

―

2

―

V

PWM Pin High Voltage

2 − 8

―

3

―

V

PWM Pin Output Current

2 − 8

―−20

―μA

PWM Blanking Time

――

0.3

―μs

OCP Blanking Time

――

0.2

―μs

PWM Operation Frequency

Duty cycle = 50%

2 − 8

――

200

kHz

PWM Off Time

――

17

―μs

Output MOSFET Rise Time

5 – 4

(5, 6 – 4)

―

25

―

ns

Output MOSFET Fall Time

5 – 4

(5, 6 – 4)

―

50

―

ns

――

150

―

°C

――

55

―

°C

1

Where the pin numbers differ between the DIP8 and the SOP8 packages, the SOP8 pin number is written in parentheses.

2

The REF pin has different functions, depending on the voltage. Please refer to REF Pin Voltage Characteristics section.

3

LC5222D/25D and

LC5222S/25S

4

SANKEN ELECTRIC CO., LTD.

LC5222D/25D_22S/25S-DS

Off-Line DC/DC LED Driver ICs

August 8, 2012