FP6790-1.5-JAN-2012

3

FP6790

85T

fitipower integrated technology lnc.

Block Diagram

UVLO

SOFT

START

CONTROL

and

DRIVE

LOGIC

_

+

_

+

1.24V

OSCILLATOR

SLOPE

COMPENSATION

SHUTDOWN

Comparator

Clock

Error Amplifier

5µA

IN

SS

LX

GND

SHDN

COMP

FB

FREQ

CURRENT

SENSE

4µA

Figure 3. Block Diagram of FP6790

Absolute Maximum Ratings

● VIN to GND ---------------------------------------------------------------------------------------------------- -0.3V to +6V

● LX to GND ----------------------------------------------------------------------------------------------------- -0.3V to +14V

● SHDN, FB, SS, FREQ, COMP to GND ---------------------------------------------------------------- -0.3V to +6V

● Power Dissipation @ T

● Package Thermal Resistance, MSOP-8 (θ

● Junction Temperature --------------------------------------------------------------------------------------- +150°C

● Storage Temperature Range ------------------------------------------------------------------------------ -65°C to +150°C

● Lead Temperature (Soldering, 10sec.) ----------------------------------------------------------------- 260°C

Note 1：

Stresses beyond those listed under “Absolute Maximum Ratings" may cause permanent damage to the device.

Recommended Operating Conditions

● Supply Voltage, V

● Max. Output Voltage ---------------------------------------------------------------------------------------- 12V

● Operation Temperature Range --------------------------------------------------------------------------- -40°C to +85°C