RT8560

7

DS8560-01 April 2011

www.richtek.com

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

Threshold of ACTL

LED Current Off

--

0.2

--

V

Input Current of DCTL

0.3V

--

--

1

μA

PWM Boost Converter

Switching Frequency

840

1000

1160

kHz

Maximum Duty Cycle

--

88

--

%

Minimum On Time

--

200

--

ns

Highest Voltage LED String

--

0.9

--

V

Amplifier gm

GM

--

220

--

μA/V

Amplifier (gm) Output Current

--

±30

--

μA

VC Threshold

PWM Switch Off

--

0.7

--

V

SW On Voltage

--

0.4

--

V

SW Current Limit

1.2

1.5

--

A

OVP & Soft Start

OVP Threshold

--

2.5

--

V

OVP Input Current

--

--

50

nA

Soft Start Current

--

7

--

μA

Note 1. Stresses listed as the above

“Absolute Maximum Ratings” may cause permanent damage to the device. These are for

stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the

operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended

periods may remain possibility to affect device reliability.

Note 2.

JEDEC 51-7 thermal measurement standard. The case point of

Note 3. Devices are ESD sensitive. Handling precaution is recommended.

Note 4. The device is not guaranteed to function outside its operating conditions.