MAX15041 Datasheet, PDF (8/16 Pages) Maxim Integrated Products – Low-Cost, 3A, 4.5V to 28V Input, 350kHz, PWM Step-Down DC-DC Regulator with Internal Switches

Low-Cost, 3A, 4.5V to 28V Input, 350kHz, PWM
Step-Down DC-DC Regulator with Internal Switches
Simplified Block Diagram
ENABLE CONTROL
EN
AND THERMAL
5V LDO
SHUTDOWN
UVLO
COMPARATOR
4V
BIAS
GENERATOR
MAX15041
V_DD
CURRENT-SENSE/CURRENT-LIMIT
AMPLIFIER
SS
FB
COMP
SGND
VOLTAGE
REFERENCE
LX
N
0.65V
CONTROL
LOGIC AND
SINK LIMIT
5µA
0.606V
STRONG PREBIAS
COMPARATOR
PWM
COMPARATOR
V_DD
N
ERROR
AMPLIFIER
Σ
OSCILLATOR
N
0.560V RISING,
0.545V FALLING
POWER-GOOD
COMPARATOR
8 _______________________________________________________________________________________
V_DD
BST
IN
LX
PGND
PGOOD