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KB3426

Features: ` High Efficiency: Up to 96%` Very Low Quiescent Current: Only 20A During Operation` 800mA Output Current` 2.5V to 6.5V Input Voltage Range` 1.5MHz Constant Frequency Operation` No Schottky Diode Required` Low Dropout Operation: 100% Duty Cycle` 0.6V Reference Allows Low Output Voltages`...

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SeekIC No. : 004384111 Detail

KB3426: Features: ` High Efficiency: Up to 96%` Very Low Quiescent Current: Only 20A During Operation` 800mA Output Current` 2.5V to 6.5V Input Voltage Range` 1.5MHz Constant Frequency Operation` No Schottk...

KB3426 Data Sheet

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Part Number:
KB3426
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: 2024/12/25

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Product Details

Description



Features:

` High Efficiency: Up to 96%
` Very Low Quiescent Current: Only 20A
    During Operation
` 800mA Output Current
` 2.5V to 6.5V Input Voltage Range
` 1.5MHz Constant Frequency Operation
` No Schottky Diode Required
` Low Dropout Operation: 100% Duty Cycle
` 0.6V Reference Allows Low Output Voltages
` Shutdown Mode Draws 1A Supply Current
` Current Mode Operation for Excellent Line and Load Transient Response
` Overtemperature Protected
` Low Profile (1mm) SOT23-5 Package


Pinout

Connection Diagram


Specifications

Input Supply Voltage ............................... 0.3V to 6.5V
RUN, VFB Voltages ..................................... 0.3V to VIN
SW Voltage .................................. 0.3V to (VIN + 0.3V)
P-Channel Switch Source Current (DC) ............... 800mA
N-Channel Switch Sink Current (DC) ................... 800mA
Peak SW Sink and Source Current .......................... 1.3A
Operating Temperature Range (Note 2) .. 40 to 85
Junction Temperature (Note 3) ............................. 125
Storage Temperature Range ................ 65 to 150
Lead Temperature (Soldering, 10 sec).................. 300


Description

The KB3426 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version and fixed output voltages of 1.8V and 3.3V. Supply current during operation is only 20A and drops to 1A in shutdown. The 2.5V to 5.5V input voltage range makes the KB3426 ideally suited for single Li-Ion battery-powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems.Automatic Burst Mode operation increases efficiency at light loads, further extending battery life.

Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors.

The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.6V feedback reference voltage. The KB3426 is available in a low profile (1mm) SOT23-5 package.




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