The MAX8744A evaluation kit (EV kit) demonstrates the
MAX8744A's standard application circuit. This dual-PWM synchronous DC-DC converter steps down high-voltage
batteries and/or AC adapters, generating main
supplies for notebook computers. The MAX8744A EV
kit provides dual 5V and 3.3V output voltages from a 7V
to 24V battery input range. It delivers up to 6A output
current for the 5V output and 5A for the 3.3V output with
97% efficiency. Both outputs are adjustable between
2V and 5.5V by changing feedback resistors R17–R20.
A transformer on the 5V output and a postregulation
LDO generates a 12V auxiliary voltage capable of delivering
120mA. This auxiliary voltage is adjustable
between 1V and 23V by changing feedback resistors
R3 and R4.
The MAX8744A also has an internal fixed 5V linear regulator
capable of supplying 100mA.
The MAX8744A EV kit operates at 300kHz switching
frequency.
Key Features
Applications/Uses
7V to 24V Input Range
Internal 5V Linear Regulator with 100mA Load Capability
Output Voltages
3.3V at 6A (Adjustable from 2V to 5.5V)
5V at 5A (Adjustable from 2V to 5.5V)
12V at 120mA (Adjustable from 1V to 23V)
300kHz Switching Frequency (Selectable 200kHz/300kHz/500kHz)
* 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:
1-1 of 1
MAX8744AEVKIT
Free Sample
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Status
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free? Materials Analysis
MAX8744AEVKIT+
Active
Land Pattern: Not Available
See data sheet
Related Products
MAX8744A, MAX8745A High-Efficiency, Quad Output, Main Power-Supply Controllers for Notebook Computers
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