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MAX861IUA+

DC/DC Adjustable Charge Pump Voltage Converter, 1.5V to 5.5V in, -5.5V to -1.5V/100 mA out, µMAX-8

MAXIM INTEGRATED PRODUCTS MAX861IUA+

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Manufacturer Part No:
MAX861IUA+
Order Code:
2517124
Technical Datasheet:
MAX861IUA+   Datasheet
See all Technical Docs

Product Overview

The MAX861IUA+ is a 50mA, frequency-selectable, switched-capacitor voltage converter in 8 pin µMAX package. This is a capacitive charge pump either invert or double the voltage applied to their inputs. i.e. invert the input voltages ranging from voltages ranging from +1.5V to +5.5V or double input voltage ranging from +2.5V to +5.5V. Because of its high switching frequency, this device uses only two small low-cost capacitors. The 50mA output makes switching regulator unnecessary and eliminates inductor and their associated cost, size and EMI. A frequency-control (FC) pin provides three switching frequencies to optimize capacitor size and quiescent current and to prevent interference with sensitive circuitry. It is used in operational-amplifier power supplies and interface power supplies.
  • Voltage conversion efficiency is 99.9% at no load
  • Power efficiency at 50mA is 87%
  • Shutdown supply current is 1µA
  • Voltage drop is 600mV at 50mA load
  • Output resistance is 12ohm at IL = 50mA
  • Switching frequency is 13KHz at FC = VDD
  • Time to exit shutdown is 500µs at no load, VOUT = -4V
  • Output current is 100mA at VDD = 5V, VOUT more negative than -3.75V

Applications

Power Management, Portable Devices, Medical

Product Information

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:
Adjustable

:
1.5V

:
5.5V

:
µMAX

:
8Pins

:
100mA

:
-

:
-5.5V

:
-1.5V

:
Doubler, Inverting

:
85°C

:
-

:
-

:
MSL 1 - Unlimited
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Technical Docs (1)

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