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ZXLD381

Features: • 85% Efficiency• User adjustable output current• Single cell operation (0.9V minimum)• Low saturation voltage switching transistor• SOT23-3 package• Available also in Die form• Simple Application circuitApplication• LED flashlights and tor...

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SeekIC No. : 004552419 Detail

ZXLD381: Features: • 85% Efficiency• User adjustable output current• Single cell operation (0.9V minimum)• Low saturation voltage switching transistor• SOT23-3 package• Av...

ZXLD381 Data Sheet

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Part Number:
ZXLD381
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: 2024/11/23

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Product Details

Description



Features:

• 85% Efficiency
• User adjustable output current
• Single cell operation (0.9V minimum)
• Low saturation voltage switching transistor
• SOT23-3 package
• Available also in Die form
• Simple Application circuit





Application

• LED flashlights and torches
• LED backlights
• White LED driver




Pinout

Connection Diagram




Specifications

Supply Voltage (VCC)............................ -0.6V to 10V
Output Voltage (VOUT)......................... -0.6V to 20V
Supply Current ...............................................20mA
Output Switch Current .................................800mA
Power Dissipation SOT23-3 ........................450mW
Power Dissipation Die .......................................1W
Operating Temperature Range............ 0to +85
Storage Temperature Range .........-55 to +150

Part Number ZXLD381
Min.- Max. Input Voltage (V) 0.9 ~ 2.2
Output Voltage (V) Vin to 20
Typ Peak Output Current (A) 0.32
Max Output Current (mA) 0.4
LED Current Accuracy (%) 10
Frequency (kHz) typ 350
Efficiency (%) 85
Operating Temperature (C) -20 to +85
Quiescent Current (mA) typ -
Standby Quiescent Current (uA) typ -





Description

The ZXLD381 is a single cell LED driver designed for applications where step-up voltage conversion from a very low input voltage is required. These applications mainly operate from 1.5V or 1.2V cells. The IC generates constant current pulses that are ideal for driving single or multiple LEDs over a wide range of operating voltages.

The ZXLD381 uses a PFM control technique to drive an internal switching transistor which exhibits a low saturation resistance. This ensures high efficiency, even for input voltages as low as 1V. The IC can start up under full load and operates down to an input voltage of only 0.9V.

The ZXLD381 is offered in the space saving SOT23 package or in die form, offering an excellent cost vs performance solution for single cell LED driving applications.






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