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MAX8545EUB+

DC/DC Controller, Buck (Step Down), 2.7 V to 28 V, 1 Output, 360 kHz, µMAX-10

MAXIM INTEGRATED PRODUCTS MAX8545EUB+

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Manufacturer Part No:
MAX8545EUB+
Order Code:
2516641
Technical Datasheet:
MAX8545EUB+   Datasheet
See all Technical Docs

Product Overview

The MAX8545EUB+ is a low cost, wide input range, step-down controller with foldback current limit in 10 pin µMAX package. It drives low cost N-channel MOSFETs for both the high-side switch and synchronous rectifier & require no external current sense resistor. Lossless short circuit and current-limit protection is provided by monitoring the RDS(ON) of the low-side MOSFET. It has a current-limit threshold of 320mV. Device features foldback-current capability to minimize power dissipation under short circuits. Pulling the COMP/EN pin low with an open-collector or low-capacitance, open-drain device can shut down device. IC is compatible with low cost aluminium electrolytic capacitors. Input undervoltage lockout prevents proper operation under power-sag operations to prevent external MOSFETs from overheating. Internal soft start is included to reduce inrush current. It is used in set-top boxes, telecom power supplies, cable modems & routers, graphic card and video supplies.
  • Supply voltage range is 2.7V to 28V
  • Operating temperature range from -40°C to 85°C
  • Foldback short circuit protection, low cost external components
  • No additional bias supply needed, all n-channel MOSFET design
  • 0.8V to 0.83 x VIN output
  • Up to 95% efficiency
  • Adaptive gate drivers eliminate shoot through
  • Switching frequency of 300KHz
  • Pin-compatible with the MAX1967
  • Thermal shutdown

Applications

Power Management, Industrial, Portable Devices

Product Information

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:
2.7V

:
28V

:
1 Output

:
86%

:
µMAX

:
10Pins

:
360kHz

:
Buck (Step Down)

:
-40°C

:
85°C

:
-

:
-

:
MSL 1 - Unlimited
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Technical Docs (1)

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