3

FP6737/A-1.6-DEC-2011

FP6737/A

85T

fitipower integrated technology lnc.

Block Diagram

CONTROL

LOGIC

PWM/PFM

CONTROL

1.2MHz

OSCILLATOR

Internal

Soft Start

VREF

SLOPE

COMPENSATION

PWM

COMPARATOR

OVER VOLTAGE

COMPARATOR

DRIVER

28V

CURRENT AMP.

RC

CC

ERROR

AMP.

RS

M1

SHDN

SW

GND

OVP

VIN

FB

Figure 3. Block Diagram of FP6737/A

Absolute Maximum Ratings

● Supply Input Voltage (VIN) ------------------------------------------------------------------------------------- +6V

● SW, OVP Voltage ------------------------------------------------------------------------------------------------- +33V

● FB Voltage ---------------------------------------------------------------------------------------------------------- +6V

●

Voltage ---------------------------------------------------------------------------------------------------- +6V

● Power Dissipation @T

● Package Thermal Resistance SOT-23-6/TSOT-23-6 (θ

● Maximum Junction Temperature (T

● Storage Temperature Range (T

● Lead Temperature (Soldering, 10 sec.) (T

Note 1：

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

Recommended Operating Conditions

● Input Voltage (V

● Operating Temperature Range -------------------------------------------------------------------------------- -40ºC to +85ºC