MAX773ESA, MAX773ESD, MAX774 Selling Leads, Datasheet
MFG:MAXIM Package Cooled:SOP8 D/C:09+
MAX773ESA, MAX773ESD, MAX774 Datasheet download
Part Number: MAX773ESA
MFG: MAXIM
Package Cooled: SOP8
D/C: 09+
MAX773ESA, MAX773ESD, MAX774
- Table of contents:
Info of MAX773ESA
Info of MAX773ESD
Info of MAX774
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About MAX002
PDF/DataSheet Download
Datasheet: MAX002
File Size: 42133 KB
Manufacturer: FILTRONIC [Filtronic Compound Semiconductors]
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About MAX773ESD
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Datasheet: MAX773ESD
File Size: 209125 KB
Manufacturer: MAXIM [Maxim Integrated Products]
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About MAX774
PDF/DataSheet Download
Datasheet: MAX774
File Size: 166985 KB
Manufacturer: MAXIM [Maxim Integrated Products]
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MAX774 General Description
The MAX774/MAX775/MAX776 inverting switching regulators deliver high efficiency over three decades of load current. A unique current-limited, pulsefrequency- modulated (PFM) control scheme provides the benefits of pulse-width modulation (high efficiency with heavy loads), while using less than 100A of supply current (vs. 2mA to 10mA for PWM converters). The result is high efficiency over a wide range of loads.
These ICs also use tiny external components; their high switching frequency (up to 300kHz) allows for less than 5mm diameter surface-mount magnetics.
The MAX774/MAX775/MAX776 accept input voltages from 3V to 16.5V, and have preset output voltages of -5V, -12V, and -15V, respectively. Or, the output voltage can be user-adjusted with two resistors. Maximum VIN - VOUT ifferential voltage is limited only by the breakdown voltage of the chosen external switch transistor.
These inverters use external P-channel MOSFET switches, allowing them to power loads up to 5W. If less power is required, use the MAX764/MAX765/MAX766 inverting switching regulators with on-board MOSFETs.
MAX774 Maximum Ratings
ABSOLUTE MAXIMUM RATINGS
Supply Voltages
V+ to OUT ...........................................................................21V
V+ to GND ..............................................................-0.3V, +17V
OUT to GND ........................................................-0.3V, to -17V
REF, SHDN, FB, CS......................................-0.3V to (V+ + 0.3V)
EXT ...............................................(VOUT - 0.3V) to (V+ + 0.3V)
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:
MAX77_C__ .......................................................0°C to +70°C
MAX77_E__ ....................................................-40°C to +85°C
MAX77_MJA ..................................................-55°C to +125°C
Maximum Junction Temperatures:
MAX77_C__/E__...........................................................+150°C
MAX77_MJA...................................................................+175°C
Storage Temperature Range ........................-65°C to +160°C
Lead Temperature (soldering, 10sec) ...........................+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. hese are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating onditions for extended periods may affect device reliability.
MAX774 Features
85% Efficiency for 5mA to 1A Load Currents
Up to 5W Output Power
100A Max Supply Current
5A Max Shutdown Current
3V to 16.5V Input Range
-5V (MAX774), -12V (MAX775), -15V (MAX776), or Adjustable Output Voltage
Current-Limited PFM Control Scheme
300kHz Switching Frequency
Up to 5W Output Power
100A Max Supply Current
5A Max Shutdown Current
3V to 16.5V Input Range
-5V (MAX774), -12V (MAX775), -15V (MAX776), or Adjustable Output Voltage
Current-Limited PFM Control Scheme
300kHz Switching Frequency
MAX774 Typical Application
LCD-Bias Generators
High-Efficiency DC-DC Converters
Battery-Powered Applications
Data Communicators
High-Efficiency DC-DC Converters
Battery-Powered Applications
Data Communicators
MAX774 Connection Diagram
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