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MAX765

Features: High Efficiency for a Wide Range of Load Curren250mA Output Current120A Max Supply Current5A Max Shutdown Current3V to 16V Input Voltage Range-5V (MAX764), -12V (MAX765), -15V (MAX766), or Adjustable Output from -1V to -16VCurrent-Limited PFM Control Scheme300kHz Switching FrequencyInter...

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SeekIC No. : 004412147 Detail

MAX765: Features: High Efficiency for a Wide Range of Load Curren250mA Output Current120A Max Supply Current5A Max Shutdown Current3V to 16V Input Voltage Range-5V (MAX764), -12V (MAX765), -15V (MAX766), or...

MAX765 Data Sheet

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Part Number:
MAX765
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

High Efficiency for a Wide Range of Load Curren
250mA Output Current
120A Max Supply Current
5A 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 


Application

LCD-Bias Generators
Portable Instruments
LAN Adapters
Remote Data-Acquisition Systems
Battery-Powered Applications



Pinout

Connection Diagram


Specifications

V+ to GND .........................................................-0.3V to +17V
OUT to GND ......................................................+0.5V to -17V
Maximum Differential (V+ to OUT) ..................................+21V
REF, SHDN, FB to GND .............................-0.3V to (V+ + 0.3V)
LX to V+.............................................................+0.3V to -21V
LX Peak Current ..............................................................1.5A
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) ........727mW
SO (derate 5.88mW/°C above +70°C) ....................471mW
CERDIP (derate 8.00mW/°C above +70°C) .............640mW
Operating Temperature Ranges
MAX76_C_A ....................................................0°C to +70°C
MAX76_E_A .................................................-40°C to +85°C
MAX76_MJA ...............................................-55°C to +125°C
Maximum Junction Temperatures
MAX76_C_A/E_A .......................................................+150°C
MAX76_MJA ...............................................................+175°C
Storage Temperature Range .....................-65°C to +160°C
Lead Temperature (soldering, 10sec) .......................+300°C 


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 of MAX765 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 ModeTM). The maximum operating VIN - VOUT differential is 20V. 

These MAX765 use miniature external components; their high switching frequencies (up to 300kHz) allow for lessthan 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- andmedium-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.




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