Position: Home > Datasheet list > MAX Series > Index M > MAX778L
Electronica China

Purchase MAX778L, In-stock MAX778L From SeekIC.

 

MAX778L Product Image

MAX Series Datasheet download

Five Points

Part Number: MAX778L

 

 

 

 

Description: The MAX777L/MAX778L/MAX779L are pulse-skipping DC-DC converters that step up from low-voltage inputs (...


Urgent Purchase

MAX778L General Description


The MAX777L/MAX778L/MAX779L are pulse-skipping DC-DC converters that step up from low-voltage inputs (1V  uaranteed). They require only three external components-an inductor (typically 22H) and two capacitors. The MAX777L delivers a 5V output, the MAX778L generates pin-selectable voltages of 3.0V or 3.3V, and the MAX779L output can be adjusted from 2.5V to 6V through an external resistive divider.

The devices include an Active RectifierTM that eliminates the need for an external catch diode, and permits regulation even when the input is greater than the output. Also, unlike those in other step-up converters, the  AX777L/MAX778L/MAX779L's Active RectifierTM turns off in the shutdown mode, disconnecting the output from the source. This eliminates the current drain associated with conventional step-up converters when off or in shutdown.

High-frequency operation (up to 150kHz) allows the use of small, surface-mount inductors with values of 10H or less. Supply current is 190A under no load and only 20A in standby mode; supply voltage can range from 1V to 4.5V (1 to 3 cells). With a 2V input, the devices typically deliver 200mA at 5V, or 300mA at 3V.

For fully specified devices designed for step-up/step-down applications (where the input can be above or below the output), refer to the MAX877L/MAX878L/MAX879L data sheet.

MAX778L Maximum Ratings

ABSOLUTE MAXIMUM RATINGS
Supply Voltage (IN to PGND)....................................0V to 4.5V
Output Short-Circuit Duration to PGND, AGND (Note 1)..30sec
Voltage Applied to
LX (switch off) .....................................................-0.3V to 4.5V
(switch on) ........................................30sec short to IN or OUT
OUT, SHDN ...........................................................-0.3V to +7V
FB ...........................................................-0.3V to (OUT + 0.3V)
AGND to PGND.............................................. ........-0.3V, +0.3V
Reverse Battery Current................................................900mA
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_LC_A......................................................0°C to +70°C
MAX77_LE_A ..................................................-40°C to +85°C
MAX77_LMJA ................................................-55°C to +125°C
Storage Temperature Range .........................65°C to +150°C
Lead Temperature (soldering, 10sec) ..........................+300°C

Note 1: The output may be shorted to ground if the package power dissipation is not exceeded.

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 conditions for extended periods may affect device reliability.

MAX778L Features

 1V to 4.5V Input Guarantees Start-Up Under Load
Up to 210mA Output
Load Fully Disconnected in Shutdown
82% Efficiency
Output in Regulation with Input Voltage above Output Voltage
Internal 1A Power Switch and Active Rectifier
Adjustable Current Limit Allows Low-Cost Inductors
190A No Load Supply Current
20A Shutdown Supply Current
3V/3.3V (MAX778L), 5V (MAX777L), and Adjustable (MAX779L) Output Voltage

MAX778L Typical Application

Single Battery-Cell (1V), Step-Up Voltage Conversion
Efficient, High-Power Step-Up Regulation from
Low Input Voltages
Pagers
Portable Instruments & Hand-Held Terminals
Notebook and Palmtop Computers

MAX778L Connection Diagram

MAX778L  Connection Diagram

MAX778L datasheet

MAX778L
PDF/DataSheet Download

Find MAX778L Suppliers

  • ·MAX002
  • FILTRONIC [Filtronic Compound Semiconductors] 
  • Optical Communications - Modulator Driver Amplifier 
  • 42133 KB
  • MAX002 Datasheet Download
  • ·MAX038
  • MAXIM [Maxim Integrated Products] 
  • High-Frequency Waveform Generator 
  • 207992 KB
  • MAX038 Datasheet Download
  • ·MAX038C/D
  • MAXIM [Maxim Integrated Products] 
  • High-Frequency Waveform Generator 
  • 207992 KB
  • MAX038C/D Datasheet Download
  • ·MAX038CPP
  • MAXIM [Maxim Integrated Products] 
  • High-Frequency Waveform Generator 
  • 207992 KB
  • MAX038CPP Datasheet Download
  • ·MAX038CWP
  • MAXIM [Maxim Integrated Products] 
  • High-Frequency Waveform Generator 
  • 207992 KB
  • MAX038CWP Datasheet Download
  • ·MAX038EPP
  • MAXIM [Maxim Integrated Products] 
  • High-Frequency Waveform Generator 
  • 207992 KB
  • MAX038EPP Datasheet Download
  • ·MAX038EVKIT
  • Maxim 
  • Evaluation Kit for the MAX038 
  • 106491 KB
  • MAX038EVKIT Datasheet Download
  • ·MAX038EWP
  • MAXIM [Maxim Integrated Products] 
  • High-Frequency Waveform Generator 
  • 207992 KB
  • MAX038EWP Datasheet Download

MAX778L Relative Products

  • MAX777L

    MAX777L

    The MAX777L/MAX778L/MAX779L are pulse-skipping DC-DC converters that step up from low-voltage inputs (1V uaranteed). They require only three external components-an inductor (typically 22H) and two capacitors. The MAX777L delivers a 5V output, the MAX778L gen...

  • MAX777

    MAX777

    The MAX777 is pulse-skipping DC-DC converter that steps up from low-voltage inputs (1V guaranteed).It requires only three external components-an inductor (typically 22frH) and two capacitors.The MAX777 include an Active Rectifier TM that eliminates the need ...

  • MAX776ESA+T

    MAX776ESA+T

    IC CNTRLR DC-DC 8-SOIC

  • MAX776ESA+

    MAX776ESA+

    IC CNTRLR DC-DC 8-SOIC

  • MAX776CSA+T

    MAX776CSA+T

    IC CNTRLR DC-DC 8-SOIC

  • MAX776CSA+

    MAX776CSA+

    IC CNTRLR DC-DC 8-SOIC

Hotspot Suppliers Product

  • Models: 2n3638a
Price: 1-10 USD

    2n3638a

    Price: 1-10 USD

    2n3638a MOT Low Noise Level Amp / Oscillator / Switching Transistors

  • Models: LMH6643MM
Price: 0.1-0.8 USD

    LMH6643MM

    Price: 0.1-0.8 USD

    130MHz, 75mA, Rail-to-Rail Output Amplifier, MSOP8, 3V to 12.8V Supply voltage range

  • Models: HFBR-1414Z
Price: 8-13 USD

    HFBR-1414Z

    Price: 8-13 USD

    Low Cost, Miniature Fiber Optic Component, ZIP, 820 nm Wavelength Technology, Signal Rates up to 1...

  • Models: LPC2124FBD64
Price: 6.7-7.5 USD

    LPC2124FBD64

    Price: 6.7-7.5 USD

    IC ARM7 MCU FLASH 256K 64-LQFP - LPC2124FBD64

  • Models: LM2576HVT-ADJ
Price: 0.5-0.7 USD

    LM2576HVT-ADJ

    Price: 0.5-0.7 USD

    regulator, 3A, TO220-5, 1.23 V ~ 57 V, 52kHz, RoHS Compliant, LM2576HVT-ADJ

  • Models: TMS320C6415TZLZ
Price: 60-74 USD

    TMS320C6415TZLZ

    Price: 60-74 USD

    DSP, BGA, -0.5 V to 1.5 V, Eight 32-Bit Instructions, Sixteen General-Purpose I/O

  • Models: MAX178BCNG
Price: 11.5-14 USD

    MAX178BCNG

    Price: 11.5-14 USD

    DIP24, 16-Channel, Analog Multiplexer, 40mA

  • Models: TA75902P
Price: 0.5-0.7 USD

    TA75902P

    Price: 0.5-0.7 USD

    quad operational amplifier, DIP, -0.3 to 36V, 625mW, low input biasing current, low power dissipat...

  • Models: HEDS-1500
Price: 15.68-18.09 USD

    HEDS-1500

    Price: 15.68-18.09 USD

    integrated module, 8-PIN TO-5, visible LED emitter

  • Models: PS9634
Price: 0.65-0.8 USD

    PS9634

    Price: 0.65-0.8 USD

    power transistor driving base, amplifier built-in type, photocoupler, DIP, 6.0 V, 1 A

  • Models: QM75DY-H
Price: 16-30 USD

    QM75DY-H

    Price: 16-30 USD

    transistor module, MODULE, high power switching

  • Models: LM358DT
Price: 0.0726-0.0758 USD

    LM358DT

    Price: 0.0726-0.0758 USD

    dual operational amplifier, 8-SOIC, 100 dB, 1.1 MHz, 0 V to (VCC+ - 1.5V), 2 nA

Map list:   ABCDEFGHIJKLMNOPQRSTUVWXYZ    0123456789All