CAT4238TD-GT3
LED Driver 10 Segment 5-Pin TSOT-23 T/R
Quantity | Unit Price(USD) | Ext. Price |
---|---|---|
1 | $0.864 | $0.86 |
10 | $0.736 | $7.36 |
30 | $0.670 | $20.10 |
100 | $0.607 | $60.70 |
500 | $0.568 | $284.00 |
1000 | $0.548 | $548.00 |
Inventory:9,779
- 90-day after-sales guarantee
- 365 Days Quality Guarantee
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Part Number : CAT4238TD-GT3
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Package/Case : SOT-23-5Thin,TSOT-23-5
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Brands : onsemi
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Components Categories : LED Drivers
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Datesheet : CAT4238TD-GT3 DataSheet (PDF)
Overview of CAT4238TD-GT3
The CAT4238 is a DC-DC step-up converter that delivers an accurate constant current ideal for driving LEDs. Operation at a fixed switching frequency of 1 MHz 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 40 mA can be supported over a wide range of input supply voltages up to 5.5 V, 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.
In addition to thermal protection and overload current limiting, the device also enters a very low power operating mode during 'Open LED' fault conditions.
Key Features
- Drives High Voltage LED strings (38 V)
- Up to 87% Efficiency
- Low Quiescent Ground Current 0.6 mA
- Adjustable Output Current
- 1 MHz Fixed Frequency Low noise Operation
- Soft start “in-rush” current limiting
- Shutdown current less than 1 µA
- Open LED Overvoltage Protection
- Automatic Shutdown at 1.9 V (UVLO)
- Thermal overload protection
- Mid-size and Large Panel Displays
Application
- LED Drive in battery Powered Devices
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Product Status | Last Time Buy | Type | DC DC Regulator |
Topology | Step-Up (Boost) | Internal Switch(s) | Yes |
Number of Outputs | 1 | Voltage - Supply (Min) | 2.8V |
Voltage - Supply (Max) | 5.5V | Voltage - Output | 38V |
Current - Output / Channel | 600mA (Switch) | Frequency | 1MHz |
Dimming | Analog, PWM | Mounting Type | Surface Mount |
Package / Case | SOT-23-5 Thin, TSOT-23-5 | Supplier Device Package | TSOT-23-5 |
Base Product Number | CAT4238 |
Warranty & Returns
Warranty, Returns, and Additional Information
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QA & Return Policy
Parts Quality Guarantee: 365 days
Returns for refund: within 90 days
Returns for Exchange: within 90 days
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