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MAX769EEI, MAX770, MAX7705

Table of contents:
Info of MAX769EEI
Info of MAX770
Info of MAX7705

MAX769EEI, MAX770, MAX7705 Selling Leads, Datasheet

MFG:MAX Package Cooled:QSOP D/C:98

MAX769EEI, MAX770, MAX7705 Datasheet download

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Part Number: MAX769EEI

MFG: MAX

Package Cooled: QSOP

D/C: 98

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MAX770 Parameters

MAX770 Features

90% Efficiency for 10mA to 1A Load Currents

Up to 15W Output Power

110µA Max Supply Current

5µA Max Shutdown Current

2V to 16.5V Input Range (MAX770/MAX771/MAX772)

Internal Shunt Regulator for High Input Voltages (MAX773)

Preset or Adjustable Output Voltages

MAX770: 5V or Adjustable

MAX771: 12V or Adjustable

MAX772: 15V or Adjustable

MAX773: 5V, 12V, 15V, or Adjustable

Current-Limited PFM Control Scheme

300kHz Switching Frequency

MAX770 General Description

5V/12V/15V or Adjustable, High-Efficiency Low-I_Q, Step-Up DC-DC Controllers

MAX770 Maximum Ratings

ABSOLUTE MAXIMUM RATINGS
Supply Voltages
V+ to GND............................................................-0.3V to 17V
V+ to SGND............................................................-0.3V to 7V
SGND........................................................-0.3V to (V+ + 0.3V)
EXT, CS, REF, LBO, LBI, SHDN, FB.............-0.3V to (V+ + 0.3V)
EXTH, EXTL ..............................................-0.3V to (V+ + 0.3V)
V5, V12, V15 ........................................................-0.3V to 17V
GND to AGND ......................................................0.1V to -0.1V
ISGND .............................................................................50mA
Continuous Power Dissipation (TA = +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C)..727mW
8-Pin SO (derate 5.88mW/°C above +70°C) .............471mW
8-Pin CERDIP (derate 8.00mW/°C above +70°C) ......640mW
14-Pin Plastic DIP
(derate 10.00mW/°C above +70°C) ..........................800mW
14-Pin SO (derate 8.33mW/°C above +70°C) ...........667mW
14-Pin CERDIP (derate 9.09mW/°C above +70°C).....727mW
Operating Temperature Ranges
MAX77_C__ ......................................................0°C to +70°C
MAX77_E__....................................................-40°C to +85°C
MAX77_MJ_ .................................................-55°C to +125°C
Junction Temperatures
MAX77_C__/E__ .........................................................+150°C
MAX77_MJ_..................................................................+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 conditions for extended periods may affect device reliability.

MAX770 Features

90% Efficiency for 10mA to 1A Load Currents

Up to 15W Output Power

110µA Max Supply Current

5µA Max Shutdown Current

2V to 16.5V Input Range (MAX770/MAX771/MAX772)

Internal Shunt Regulator for High Input Voltages (MAX773)

Preset or Adjustable Output Voltages

MAX770: 5V or Adjustable

MAX771: 12V or Adjustable

MAX772: 15V or Adjustable

MAX773: 5V, 12V, 15V, or Adjustable

Current-Limited PFM Control Scheme

300kHz Switching Frequency

MAX770 Typical Application

MAX770 Datasheet

MAX770 Connection Diagram

MAX7705 General Description

In applications with microprocessors (μPs) that have aRESET input, the MAX7705 is functionally and socket ompatible with the TL7705, but requires no external components. It provides power-supply glitch immunity and a guaranteed power-up reset delay, while typically consuming 1/27th the power from a +5V supply.

The MAX7705 monitors the power supply in μP and digital systems. The RESET output is valid for VCC down to 1V. The device offers excellent circuit reliability and low cost by eliminating external components and adjustments.

A system reset is provided during power-up, powerdown, and brownout conditions. When VCC is below the reset threshold, RESET is low and holds the μP in reset. RESET will go high 280ms after VCC rises above the reset hreshold. The MAX7705 is available in 8-pin DIP and SO packages.

MAX7705 Maximum Ratings

ABSOLUTE MAXIMUM RATINGS
Terminal Voltage (with respect to GND)
Vcc ......................................................................-0.3V to 6.0V
RESET.......................................................-0.3V to (Vcc + 0.3V)
Input Current, Vcc ..........................................................20mA
Output Current, RESET ...................................................20mA
Rate-of-Rise, Vcc .........................................................100V/μs
Continuous Power Disipation (TA = +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) ............727mW
SO (derate 5.88mW/°C above +70°C).........................471mW
Operating Temperature Ranges:
MAX7705C_ _ .....................................................0°C to +70°C
MAX7705E_ _ ..................................................-40°C to +85°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. These 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.

MAX7705 Features

● No External Components
● Low Cost
● Precise Reset Threshold
● 280ms Power-On Reset Delay
● 8-Pin DIP and SO Packages

MAX7705 Typical Application

●Minimum Component Count, Low-Cost Processor Systems

MAX7705 Connection Diagram

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