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MAX1910

Features: ♦ High-Efficiency 1.5x/2x Charge Pumps♦ Low Input Ripple with 750kHz Operation♦ 200mV Current-Sense Threshold Reduces Power Loss♦ Current- or Voltage-Regulated Charge Pump♦ Up to 120mA Output Current♦ No Inductors Required♦ Small Ceramic Capacito...

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SeekIC No. : 004409422 Detail

MAX1910: Features: ♦ High-Efficiency 1.5x/2x Charge Pumps♦ Low Input Ripple with 750kHz Operation♦ 200mV Current-Sense Threshold Reduces Power Loss♦ Current- or Voltage-Regulated Char...

MAX1910 Data Sheet

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Part Number:
MAX1910
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 1.5x/2x Charge Pumps
♦ Low Input Ripple with 750kHz Operation
♦ 200mV Current-Sense Threshold Reduces Power Loss
♦ Current- or Voltage-Regulated Charge Pump
♦ Up to 120mA Output Current
♦ No Inductors Required
♦ Small Ceramic Capacitors
♦ Regulated ±5% LED Current
♦ Load Disconnected in Shutdown
♦ 1µA Shutdown Current
♦ Small 10-Pin µMAX Package


Application

White LED Backlighting
Cellular Phones
PDAs
Digital Still Cameras
MP3 Players
Backup-Battery Boost Converters


Pinout

Connection Diagram


Specifications

IN1, IN2, OUT, SHDN, SET to GND ..............-0.3V to +6V
C1-, C2-, to GND...................................................-0.3V, VIN + 1V
C1+, C2+ to GND...........-0.3V, greater of VOUT + 1V or VIN + 1V
OUT Short-Circuit to GND ..........................................Continuous
Continuous Power Dissipation (TA = +70°C)
   10-Pin µMAX (derate 5.6 mW/°C above +70°C) ...........444mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................ +300°C


Description

The MAX1910/MAX1912 power LEDs with a regulated output voltage or current (up to 120mA) from an unregulated input supply (2.7V to 5.3V). These are complete DC-DC converters requiring only four small ceramic capacitors and no inductors. Input ripple is minimized by a unique regulation scheme that maintains a fixed 750kHz switching frequency over a wide load range. Also included are logic-level shutdown and soft-start to reduce input current surges at startup.

The MAX1910 has two automatically selected operating modes: 1.5x and 2x. 1.5x mode improves efficiency at higher input voltages, while 2x mode maintains regulation at lower input voltages. The MAX1912 operates only in 1.5x mode.

The MAX1910 and the MAX1912 are available in a space-saving 10-pin µMAX package.




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