The MAX15035 pulse-width modulation (PWM) controller provides high efficiency, excellent transient response, and high DC-output accuracy. Combined with the internal low on-resistance MOSFETs, the MAX15035 provides a highly efficient and compact solution for small form factor applications that need a high-power density.
Maxim's proprietary Quick-PWM™ quick-response, constant on-time PWM control scheme handles wide input/output voltage ratios (low-duty-cycle applications) with ease and provides 100ns instant-on response to load transients while maintaining a relatively constant switching frequency. The output voltage can be dynamically controlled using the dynamic REFIN, which supports input voltages between 0V to 2V. The REFIN adjustability combined with a resistive voltage-divider on the feedback input allows the MAX15035 to be configured for any output voltage between 0V to 0.9VIN.
The controller senses the current across the synchronous rectifier to achieve a low-cost and highly efficient valley current-limit protection. External current-limit control is provided to allow higher current-limit settings for applications with heatsinks and air flow, or for lower current applications that need lower current-limit settings to avoid overdesigning the application circuit. The adjustable current limit provides a high degree of flexibility, allowing thermally compensated protection or foldback current-limit protection using a voltage divider partially derived from the output.
The MAX15035 includes a voltage-controlled soft-start and soft-shutdown to limit the input surge current, provide a monotonic power-up into a precharged output, and provide a predictable soft-start time. The controller also includes output fault protection—undervoltage and overvoltage protection—as well as thermal-fault protection.
The MAX15035 is available in a small 40-pin, 6mm x 6mm, TQFN package.
Key Features
Applications/Uses
4.5V to 26V Input Voltage Range
Fast Transient Response
Monotonic Power-Up with Precharged Output
Supports Any Output Capacitor
No Compensation Required with Polymers/Tantalum
Stable with Ceramic Output Capacitors Using External Compensation
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices:
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MAX15035
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Status
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free? Materials Analysis
MAX15035EVKIT+
Active
Land Pattern: Not Available
See data sheet
MAX15035ETL+T
Active
Land Pattern: Not Available
-40°C to +85°C
See data sheet
MAX15035ETL+
Active
TQFN;40 pin;36 mm²
Outline Drawing: 21-0177 (PDF)
Land Pattern: 90-0085 (PDF)
Use pkgcode/variation: T4066M+1*
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