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MAX629

Features: Internal, 500mA, 28V N-Channel Switch (No External FET Required)Generates Positive or Negative Output Voltages80µA Supply Current1µA Max Shutdown CurrentUp to 300kHz Switching FrequencyAdjustable Current Limit Allows Use of Small, Inexpensive Inductors8-Pin SO PackageApplicat...

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SeekIC No. : 004411552 Detail

MAX629: Features: Internal, 500mA, 28V N-Channel Switch (No External FET Required)Generates Positive or Negative Output Voltages80µA Supply Current1µA Max Shutdown CurrentUp to 300kHz Switching ...

MAX629 Data Sheet

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Part Number:
MAX629
Supply Ability:
5000

Price Break

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

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Upload time: 2024/11/27

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Product Details

Description



Features:

 Internal, 500mA, 28V N-Channel Switch (No External FET Required)
Generates Positive or Negative Output Voltages
80µA Supply Current
1µA Max Shutdown Current
Up to 300kHz Switching Frequency
Adjustable Current Limit Allows Use of Small, Inexpensive Inductors
 8-Pin SO Package


Application

Positive or Negative LCD Bias Generators
High-Efficiency DC-DC Boost Converters
Varactor Tuning Diode Bias
Palmtop Computers
2-Cell and 3-Cell Battery-Powered Applications


Pinout

Connection Diagram


Specifications

Supply Voltage (VCC to GND) ..................................-0.3V to +6V
SHDN to GND...........................................................-0.3V to +6V
ISET, REF, FB, POL to GND .........................-0.3V to (VCC + 0.3V)
LX to GND .............................................................-0.3V to +30V
Continuous Power Dissipation (TA = +70°C)
SO (derate 5.88mW/°C above +70°C)..........................471mW
Operating Temperature Range ........................-40°C to +85°C
Junction Temperature.....................................................+150°C
Storage Temperature Range .........................-65°C to +165°C
Lead Temperature (soldering, 10sec) ...........................+300°C


Description

The MAX629 low-power DC-DC converter features an internal N-channel MOSFET switch and programmable current limiting. It is designed to supply positive or negative bias voltages up to ±28V from input voltages in the 0.8V to VOUT range, and can be configured for boost, flyback, and SEPIC topologies.

The MAX629's current-limited pulse-frequency-modulation (PFM) control scheme provides high efficiency over a wide range of load conditions. An internal, 0.5A Nchannel MOSFET switch reduces the total part count, and a high switching frequency (up to 300kHz) allows for tiny surface-mount magnetics.

The MAX629's combination of low supply current, logiccontrolled shutdown, small package, and tiny external components makes it an extremely compact and efficient high-voltage biasing solution that's ideal for battery- powered applications. The MAX629 is available in an 8-pin SO package.




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