Specifications

44 Control and Automation Solutions Guide
Nonisolated and Isolated Power-Supply Functions  
Part Description Features Benefits
Offline AC-DC, DC-DC Controllers  
MAX17499/500 Isolated/nonisolated current-mode
PWM controllers ideal for flyback/
forward topologies
85V AC to 265V AC universal offline
input voltage range (MAX17500),
9.5V DC to 24V DC input voltage
range (MAX17499), programmable
switching frequency up to 625kHz,
1.5% reference accuracy
Topology allows wide power
range for use in multiple offline
applications.
MAX5069 Isolated/nonisolated current-mode
PWM controller with dual FET
drivers ideal for push-pull and
half-/full-bridge power supplies
85V AC to 265V AC universal
offline input voltage range
(MAX5069A/B), 10.8V DC to
24V DC input voltage range
(MAX5069C/D), programmable
switching frequency up to 2.5MHz,
programmable UVLO and UVLO
hysteresis
Programmable switching
frequency enables optimization of
magnetic and filter components,
reducing solution size.
MAX17497/98 Current-mode regulator for
universal AC-DC flyback/
forward topologies with built-in
synchronous buck regulator
1x nonisolated flyback/
forward regulator + 1x internal
secondary-side step-down
regulator; 250kHz/500kHz
flyback regulator frequency and
1MHz secondary buck regulator
frequency; programmable slope
compensation for flyback regulator
and internal compensation for
secondary buck regulator
Two supplies in single-chip
solution provide ease of design
and high accuracy, and reduce
solution cost and size.
Nonisolated DC-DC Controller  
MAX15046A/B 40V, high-performance
synchronous buck controller
4.5V to 40V input voltage
range, 0.6V to (0.85)V
IN
output
voltage range, 100kHz to 1MHz
programmable switching
frequency, ±1% accurate voltage
reference
Support the 24V industrial
supply voltage with ample
margin; programmable switching
frequency allows optimizing
for smallest solution size and
efficiency.
MAX15023/26 Wide V
IN
, dual-/single-output
synchronous buck controllers
4.5V to 28V input voltage
range, 0.6V to (0.85)V
IN
output
voltage range, 200kHz to 1MHz
programmable switching
frequency, ±1% accurate voltage
reference, independent EN and
PGOOD for each PWM channel
(MAX15023)
Programmable switching
frequency allows optimizing
for smallest solution size and
efficiency.
MAX15048/49 Triple-output synchronous
buck controllers with tracking/
sequencing
4.7V to 23V input voltage range,
200kHz to 1.2MHz programmable
switching frequency, 120 degrees
out-of-phase operation, digital
soft-start and soft-stop
Out-of-phase operation reduces
input filter requirements, saving
cost and size; soft-start and soft-
stop enable glitch free power-up
and power-down.
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