YB1520 参数 Datasheet PDF下载

YB1520

High Power Step-up DC-DC Converter, White LED Driver

Absolute Maximum Ratings

Vin..........................................................................20V

SW Voltage ............................................................36V

FB Voltage ...............................................................5V

CTRL Voltage...........................................................5V

Maximum Junction Temp, TJ (not 2)...................150°C

Lead Temperature (Soldering 10 sec) ................300°C

Thermal Resistance............................................195°C

Recommended Operating Conditions

Operating Temperature (note 3)

................ –40°C~85°C

Supply Voltage............................................. 2.5V~16V

SW Voltage ............................................................30V

Electricity Characteristics

(TA=25°C, Vin=3.3V, Cin=1uF Cout=10uF unless otherwise noted)

Symbol

Vin

IQ

(Quiescent

Current)

VFB

ICL

ILIM

IB

FRSW

DTMX

DTMN

VSAT

ILKG

VCTL

ICTL

OVP

θJA

Function Parameter

Input Voltage Range

Not Switching

Shutdown

Feedback Voltage

Switch Current Limit

FB Pin Bias Current

Switching Frequency

Maximum Duty Cycle

Minimum Duty Cycle

Switch Vcesat

Switch Leakage Current

VCTRL for Full LED

Current

CTRL Pin Bias Current

Over Voltage Protection

Thermal Resistance

Test Conditions

Vfb = 0.3V

CTRL = 0V

Iout=20mA,Vout=12.5V

Circuit of Figure 1

100% Duty Cycle

40% Duty Cycle

Vfb=200mV

Min

2.7

1.2

Typ

1.5

0.3

Max

16

1.7

1

220

950

20

720

85

Units

V

mA

uA

mV

mA

mA

uA

KHz

%

%

mV

μA

180

850

2

680

200

900

600

10

700

20

At Isw = 200mA

Ctrl = 0.3V

Full On

Full Off

Ctrl = 2V

120

1

1.7

0.2

20

34

220

25

1.8

0.3

V

V

μA

V

°C/W

Note:

Absolute maximum ratings are limits beyond which damage to the device may occur. The maximum allowable power dissipation is a

function of maximum function temperature, TJ(max), the junction to ambient thermal resistance,

θJA

, and the ambient temperature.

The maximum allowable, power dissipation at any ambient temperature is calculated using: PD(MAX)= [TJ(max)-TA]/θJA . Exceeding

the maximum allowable power dissipation will cause excessive die temperature. All limits at temperature extremes are guaranteed via

correlation using standard statistical methods

YB1520 MRev.1.2

www.yobon.com.tw

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