LTC3900ES8 Linear Technology, LTC3900ES8 Datasheet - Page 12

• Manufacturer Part Number: LTC3900ES8
• Description: IC DRIVER RECT SYNC CONV 8SOIC
• Manufacturer: Linear Technology

Specifications of LTC3900ES8

• Configuration: High-Side
• Input Type: Inverting and Non-Inverting
• Delay Time: 60ns
• Current - Peak: 2A
• Number Of Configurations: 2
• Number Of Outputs: 2
• Voltage - Supply: 4.5 V ~ 11 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• High Side Voltage - Max (bootstrap): -

APPLICATIONS INFORMATION
LTC3900
the driver dissipation, the total gate charge Q
This parameter is found on the MOSFET manufacturers
data sheet.
The power dissipated in each LTC3900 MOSFET driver
is:
where f
PC Board Layout Checklist
When laying out the printed circuit board, the following
checklist should be used to ensure proper operation of
the LTC3900 for your layout:
1. Connect the 4.7μF bypass capacitor as close as possible
to the V
12
P
DRIVER
SW
CC
and GND pins.
is the switching frequency of the converter.
= Q
G
• V
CC
• f
SW
G
is used.
2. Connect the two MOSFET drain terminals directly to
the transformer. The two MOSFET sources should be as
close together as possible.
3. Keep the timer, SYNC and V
from the high current path of Q3, Q4 and T1.
4. Place the timer capacitor, C
to the LTC3900.
5. Keep the PCB trace from the resistors R
R
Connect the other ends of the resistors directly to the drain
and source of the MOSFET, Q4.
CS3
to the LTC3900 CS
+
/CS
–
TMR
pins as short as possible.
CC
regulator circuit away
, as close as possible
CS1
, R
CS2
3900fa
and