Datasheet

MAX5090
REGULATOR
(FOR ANALOG)
ENABLE
LX
BST
V
IN
ON/OFF
VREF
REGULATOR
(FOR DRIVER)
OSC RAMP
IREF-PFM
IREF-LIM
CPFM
1.38V
CILIM
FB
EAMP
THERMAL
SHUTDOWN
CPWM
VD
PGND
RAMP
CLK
CONTROL
LOGIC
TYPE 3
COMPENSATION
SGND
x1
*R
H
DRAIN
SYNC
SS
MIN
SRAMP
MUX
SRMP
SCK
*R
L
CLKI RMP
N
HIGH-SIDE
CURRENT SENSE
*R
H
= 0Ω AND R
L
= ∞ FOR MAX5090C
MAX5090A/B/C 2A, 76V, High-Efciency MAXPower
Step-Down DC-DC Converters
www.maximintegrated.com
Maxim Integrated │ 8
Simplied Functional Diagram