YB1517

Step-up DC-DC Converter & White LED Driver

YB1517 Rev.1.4

www.yobon.com.tw

4

Electrical Characteristics

Table 3

Description

Symbol

Test Conditions

MIN

TYP

MAX

Units

Input Voltage Range

2.7

16

V

Quiescent Current

1.5

1.7

mA

Shutdown Current

CTRL = 0V

0.3

1

μA

Feedback Voltage

Circuit of Figure 2

210

220

230

mV

85% duty cycle

850

900

1000

mA

Switch Current Limit

40% duty cycle

400

mA

FB Pin Bias Current

1

μA

Switching Frequency

850

900

950

KHz

Maximum Duty Cycle

85

%

Minimum Duty Cycle

20

25

%

Switch Vcesat

180

mV

Switch Leakage Current

CTRL = 0.5V

1

μA

Full On

1.7

V

VCTRL for Full LED Current

Full Off

0.3

V

CTRL Pin Bias Current

CTRL = 2V

40

μA

Over Voltage Protection

OVP

28

30

35

V

Over Thermal Protection

OTP

160

°C

Note :

Absolute maximum ratings are limits beyond which damage to the device may occur. The maximum allowable,