Low

ON SEMICONDUCTOR  CAT4238TD-GT3  LED Driver, Boost (Step Up), 2-5.5V input, 1 Output, 1 MHz switch-freq., 38V/450 mA out, TSOT-23-5

ON SEMICONDUCTOR CAT4238TD-GT3
Technical Data Sheet (127.51KB) EN See all Technical Docs

Image is for illustrative purposes only. Please refer to product description.

Product Overview

The CAT4238TD-GT3 is a DC/DC Step-up Converter delivers an accurate constant current ideal for driving LEDs. Operation at a fixed switching frequency of 1MHz allows the device to be used with small value external ceramic capacitors and inductor. LEDs connected in series are driven with a regulated current set by the external resistor R1. LED currents up to 40mA can be supported over a wide range of input supply voltages up to 5.5V, making the device ideal for battery-powered applications. The CAT4238 high-voltage output stage is perfect for driving mid-size and large panel displays containing up to ten white LEDs in series. LED dimming can be done by using a DC voltage, a logic signal or a pulse width modulation (PWM) signal. The shutdown input pin allows the device to be placed in power-down mode with zero quiescent current.
  • Drives high voltage LED strings (38V)
  • Up to 87% efficiency
  • Low quiescent ground current of 0.6mA
  • Adjustable output current
  • 1MHz Fixed frequency low noise operation
  • Soft start in-rush current limiting
  • Shutdown current less than 1µA
  • Open LED overvoltage protection
  • Automatic shutdown at 1.9V (UVLO)
  • Thermal overload protection

 

Product Information

Device Topology:
Boost (Step Up)
No. of Outputs:
1Outputs
Output Current:
40mA
Output Voltage:
38V
Driver Case Style:
TSOT-23
No. of Pins:
5Pins
Input Voltage Min:
2V
Input Voltage Max:
5.5V
Switching Frequency:
1MHz
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Packaging:
Cut Tape
Product Range:
-
Automotive Qualification Standard:
-
MSL:
-
SVHC:
No SVHC (17-Dec-2015)

Find similar products  grouped by common attribute

Applications

  • Sensing & Instrumentation;
  • Consumer Electronics;
  • Portable Devices

Legislation and Environmental

Moisture Sensitivity Level:
-
Country of Origin:
Thailand

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423190
Weight (kg):
.001

Alternatives

IC, LED DRIVER, BOOST, TSOT-23-5

ON SEMICONDUCTOR

743:  in stock

Price for: Each (Supplied on Cut Tape)

1+ £0.87 25+ £0.668 100+ £0.61 250+ £0.547 more…

Buy

Associated Products