LTC3458 Linear Technology, LTC3458 Datasheet - Page 13

• Manufacturer Part Number: LTC3458
• Description: 1.4A/ 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect
• Manufacturer: Linear Technology

APPLICATIO S I FOR ATIO
rolled off before the RHP zero frequency.
The typical error amp compensation is shown in Figure 2.
The equations for the loop dynamics are as follows:
f
f
f
POLE
ZERO
POLE
1
2
1
≈
=
≈
2
2
2
π
π
π
•
•
•
10
R
R
1
Z
Z
1
e
1
U
•
•
6
CC
CC
•
CC
1
2
U
1
which is close to DC
W
U
ERROR
AMP
+
–
Figure 2
COMP
1.25V
FB
7
8
w w w . D a t a S h e e t 4 U . c
R Z
CC1
LTC3458
CC2
V
OUT
R1
R2
3458 F01
13
3458f