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36V HV Synchronous Boost Controller for
Automotive Infotainment Applications
MAX25201/MAX25202
General Description
Benefits and Features
The MAX25201/MAX25202 are high-performance, cur-
rent-mode PWM controllers with 1.5μA (typ) shutdown
current for wide input voltage range boost converters. The
4.5V to 36V input operating voltage range makes these
devices ideal in automotive applications, such as front-
end preboost or general-purpose boost power supply, for
the first boost stage in high-power LED lighting applica-
tions or to generate audio amplifier voltages. An internal
low-dropout regulator with a 5V output voltage enables the
MAX25201/MAX25202 to operate directly from an auto-
motive battery input. The input operating range can be ex-
tended to as low as 1.8V after startup.
● Meets Stringent OEM Module Power Consumption
and Performance Specifications
• 20µA Quiescent Current in Skip Mode
• ±1.5% FB Voltage Accuracy
• Output Voltage Range: Fixed or Adjustable
Between 3.5V and 60V
● Enables Crank-Ready Designs
• Operates Down to 1.8V After Startup
• Wide Input Supply Range from 4.5V to 36V
● EMI Reduction Features Reduce Interference with
Sensitive Radio Bands Without Sacrificing Wide Input
Voltage Range
The MAX25201/MAX25202's switching frequency oper-
ation (up to 2.2MHz) reduces output ripple, avoids AM
band interference, and allows for the use of smaller exter-
nal components. The switching frequency is resistor ad-
justable from 220kHz to 2.2MHz. Alternatively, the fre-
quency can be synchronized to an external clock. A
spread spectrum option is available to improve system
EMI performance. For high-current applications the dual-
phase MAX25202 is available. The MAX25202 operates
at a fixed 400kHz switching frequency and can be syn-
chronized to an external clock.
• Spread-Spectrum Option
• Frequency-Synchronization Input
• Resistor-Programmable Frequency Between
200kHz and 2.2MHz
● AEC-Q100 Qualified Integration and Thermally
Enhanced Packages Save Board Space and Cost
• Current-Mode Controllers with Forced-Continuous
and Skip Modes
• Thermally Enhanced 16-Pin TQFN-EP Package
● Protection Features Improve System Reliability
• Supply Undervoltage Lockout
The controllers feature a power-OK monitor and under-
voltage lockout. Protection features include cycle-by-cycle
current limit and thermal shutdown. The MAX25201/
MAX25202 operate over the -40°C to +125°C automotive
temperature range.
• Overtemperature and Short-Circuit Protection
Applications
Infotainment Systems
Cluster Systems
E-call
19-100588; Rev 6; 10/22
Ordering Information appears at end of data sheet.
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