FC6160 datasheet(7/8 Pages) FS

7 / 8 page

2012.04.027

7/8

FC6160

Revision No : 0

Application Information

The FC6160 is a high voltage, low dropout linear

regulator that could provide 150mA output current

at 800mV dropout voltage. Besides, current limit

and on chip thermal shutdown features provide

protection against any combination of overload or

ambient temperature that could exceed junction

temperature.

Shutdown Control

Force /SHDN pin high to enable the FC6160 and

turned off the device by pulling it low. The /SHDN

pin can’t be floated and must be tied to the VIN if not

used.

Output Voltage Setting

The output voltage of regulator is determined by

connecting external resistor dividers. The external

resistor divider connects with FB pin. The output

voltage is determined by the following equation:

235

OUT

PSRR (Power Supply Rejection Ratio)

The FC6160 has high 65dB PSRR. Ripple rejection

is the ability of the regulator to reduce input voltage

ripple. It is specified with a 120Hz and 1V

P-P signal

applying to input, with 1uF output capacitor. Ripple

rejection, expressed in dB, is the ratio of output

ripple to input ripple.

Output and Input Capacitor

The FC6160 is designed to be stable with low ESR

ceramic capacitors. Higher values of capacitors

and ESR could improve output stability. So

the ESR of output capacitor is very important

because it generates a zero to provide phase

lead for loop stability. It is recommended to

use 1uF to 10uF X5R or X7R dielectric

ceramic capacitors with 30mΩ to 50mΩ ESR

range between VOUT and GND for transient

stability.

Larger value of the output capacitor

decreases the peak deviations and provides

to improve transition response for larger

current changes.

The ESR is not essential for input capacitor,

but its voltage and temperature coefficient

have to be considered for device application

environment.

Over Temperature Protection

Over temperature protection function is

integrated in the chip. The thermal protection

function prevents the excessive power

dissipation form overheating. When the chip

temperature is higher than 150°C, the

controller is shutdown. When the junction

temperature cools down to a constant value,

the thermal protection is released and the

chip operates normal again.

Thermal Consideration

The power handling capability of the device

will be limited by allowable operation junction

temperature (125°C). The power dissipated

by the device will be estimated by PD = IOUT ×

(VIN-VOUT). The power dissipation should be

lower than the maximum power dissipation

listed in “Absolute Maximum Ratings” section.

FC6160 Datasheet(PDF) 7 Page - First Silicon Co., Ltd

FC6160 Datasheet(HTML) 7 Page - First Silicon Co., Ltd

Html Pages

1 2 3 4 5 6 7 8

Datasheet Download

Link URL