MAX765

-5V/-12V/-15V or Adjustable, High-Efficiency, Low-IQ DC-DC Inverters

Internal Power MOSFET Reduces Component Count and Saves Space


Please check latest availability status for a specific part variant.

Description

The MAX764/MAX765/MAX766 inverting switching regulators are highly efficient over a wide range of load currents, delivering up to 1.5W. A unique, current-limited, pulse-frequency-modulated (PFM) control scheme combines the benefits of traditional PFM converters with the benefits of pulse-width-modulated (PWM) converters. Like PWM converters, the MAX764/MAX765/MAX766 are highly efficient at heavy loads. Yet because they are PFM devices, they use less than 120µA of supply current (vs. 2mA to 10mA for a PWM device).

The input voltage range is 3V to 16V. The output voltage is preset at -5V (MAX764), -12V (MAX765), or -15V (MAX766); it can also be adjusted from -1V to -16V using two external resistors (Dual Mode™). The maximum operating VIN - VOUT differential is 20V.

These devices use miniature external components; their high switching frequencies (up to 300kHz) allow for less than 5mm diameter surface-mount magnetics. A standard 47µH inductor is ideal for most applications, so no magnetics design is necessary.

An internal power MOSFET makes the MAX764/MAX765/ MAX766 ideal for minimum component count, low- and medium-power applications. For increased output drive capability or higher output voltages, use the MAX774/MAX775/MAX776 or MAX1774, which drive an external power P-channel MOSFET for loads up to 5W.
MAX764, MAX765, MAX766: Typical Operating Circuit MAX764, MAX765, MAX766: Typical Operating Circuit Enlarge+

Key Features

  • High Efficiency for a Wide Range of Load Currents
  • 250mA Output Current
  • 120µA Max Supply Current
  • 5µA Max Shutdown Current
  • 3V to 16V Input Voltage Range
  • -5V (MAX764), -12V (MAX765), -15V (MAX766), or Adjustable Output from -1V to -16V
  • Current-Limited PFM Control Scheme
  • 300kHz Switching Frequency
  • Internal, P-Channel Power MOSFET

Applications/Uses

  • Battery-Powered Applications
  • LAN Adapters
  • LCD Bias Generators
  • Portable Instrumentation
  • Remote Data-Acquisition Systems
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
IOUT1
(A)
Output Adjust. MethodDC-DC OutputsOper. Freq.
(kHz)
Switch TypePackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX764 316.5-1-16-50.26Resistor1300Internal
CDIP/8
PDIP/8
SOIC (N)/8
$2.70 @1k
MAX765 -120.12
CDIP/8
PDIP/8
SOIC (N)/8
$2.80 @1k
MAX766 -150.1
CDIP/8
PDIP/8
SOIC (N)/8
$2.70 @1k
See All Inverting Switching Regulators (22)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX764EVKIT: Evaluation Kit for the MAX764, MAX765, MAX766

Technical Documents

User Guide 5828 Petaluma (MAXREFDES30#) ZedBoard Quick Start Guide
Sub-System Board 5827 Petaluma (MAXREFDES30#): 8-Channel Simultaneous-Sampling Analog Front End

Quality and Environmental Data

Request Reliability Report for: MAX765 
Lead-Free Package Tin (Sn) Whisker Reports
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

 
Status:
Package:
Temperature:

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