MAX17531 Datasheet, PDF (10/20 Pages) Maxim Integrated Products – Reduces Power Dissipation

MAX17531
Block Diagram
42V, 50mA, Ultra-Small, High-Efficiency
Synchronous Step-Down DC-DC Converter
with 22µA No-Load Supply Current
V_OUT
INTERNAL
LDO
REGULATOR
EN/UVLO
RT/SYNC
MODE
FB
SS
POK
1.25V
CHIPEN
THERMAL
SHUTDOWN
OSCILLATOR
VCC_INT
CLK
SLOPE
1.22V
INTERNAL OR
EXTERNAL
SOFT-START
CONTROL
ERROR
AMPLIFIER
MODE SELECT
SLOPE
CS
PWM
CLK
VCC_INT
PEAK-LIMIT
CURRENT-
SENSE
CS
LOGIC
PFM
CURRENT-
SENSE
AMPLIFIER
DH
PFM/PWM
CONTROL
LOGIC
DL
HIGH-SIDE
DRIVER
LOW-SIDE
DRIVER
SINK-LIMIT
0.76V
FB
MAX17531
CURRENT
SENSE
AMPLIFIER
NEGATIVE
CURRENT
REF
2ms
DELAY
IN
LX
GND
RESET
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