NCP176

www.onsemi.com

10

The power dissipated by the LDO for given application

conditions can be calculated by the next equation:

P

(eq. 2)

the output load current.

Connecting the exposed pad and

planes helps to dissipate the heat from the chip.

The relation of

Cu layer thickness could be seen on the Figure 30.

Reverse Current

The PMOS pass transistor has an inherent body diode

Due to this fact in cases, where the extended reverse current

condition can be anticipated the device may require

additional external protection.

Power Supply Rejection Ratio

The LDO features very high power supply rejection ratio.

The PSRR at higher frequencies (in the range above

and proper PCB layout. A simple LC filter could be added

to the LDO’s IN pin for further PSRR improvement.

Enable Turn−On Time

The enable turn−on time is defined as the time from EN

nominal value. This time is dependent on various

PCB Layout Recommendations

To obtain good transient performance and good regulation

possible to the device pins and make the PCB traces wide.

In order to minimize the solution size, use 0402 or 0201

capacitors size with appropriate effective capacitance.

Larger copper area connected to the pins will also improve

the device thermal resistance. The actual power dissipation

can be calculated from the equation above (Power

Dissipation section). Exposed pad and N/C pin should be

tied to the ground plane for good power dissipation.

ORDERING INFORMATION TABLE

Part Number

Voltage Option

Marking

Option

Package

NCP176AMX100TCG

1.0 V

AA

With output discharge

XDFN6

(Pb−Free)

3000 / Tape & Reel

NCP176AMX120TCG

1.2 V

AE

NCP176AMX180TCG

1.8 V

AF

NCP176AMX300TCG

3.0 V

AC

NCP176AMX330TCG

3.3 V

AD

NCP176BMX100TCG

1.0 V

DA

Without output discharge

NCP176BMX120TCG

1.2 V

DE

NCP176BMX180TCG

1.8 V

DF

NCP176BMX300TCG

3.0 V

DC

NCP176BMX330TCG

3.3 V

DD

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.