AME, Inc.
1.6 MHz Boost Converter with
30V Internal FET Switch
AME5140
n Pin Description (Continued)
AME5140AEEV SOT-25/TSOT-25
Pin Number
Pin Name
SW
Pin Description
Power Switch input.
1
2
This is the drain of the internal NMOS power switch.
Minimize the metal trace area connected to this pin to minimize EMI.
GND
Ground. Tie directly to ground plane.
Output voltage feedback input.
Set the output voltage by selecting values for R1 and R2 using:
3
FB
V
æ
ö
out
R1 = R 2ç
- 1÷
ç
÷
1.23V
è
ø
Connect the ground of the feedback network to a GND plane.
Enable, active high.
4
5
EN
IN
The enable pin is an active high control. Tie this pin above 2V to enable the
device. Tie this pin below 0.4V to turn off the device.
Analog and Power input. Input Supply Pin.
Place bypass capacitor as close to VIN as possible.
AME5140BEQA MSOP-8
Pin Number
Pin Name
Pin Description
Analog and Power input. Input Supply Pin.
1
IN
Place bypass capacitor as close to VIN as possible.
Enable, active high.
2
3
EN
The enable pin is an active high control. Tie this pin above 2V to enable the
device. Tie this pin below 0.4V to turn off the device.
GND
Ground. Tie directly to ground plane.
Output voltage feedback input.
Set the output voltage by selecting values for R1 and R2 using:
4
FB
V
æ
ö
out
R1 = R 2ç
- 1÷
ç
÷
1.23V
è
ø
Connect the ground of the feedback network to a GND plane.
Power Switch input.
5
6
SW
SW
This is the drain of the internal NMOS power switch.
Minimize the metal trace area connected to this pin to minimize EMI.
Power Switch input.
This is the drain of the internal NMOS power switch.
Minimize the metal trace area connected to this pin to minimize EMI.
7
8
GND
GND
Ground. Tie directly to ground plane.
Ground. Tie directly to ground plane.
Rev.G.01
4
AME [ ANALOG MICROELECTRONICS ]
