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CAT4137TD-GT3 IC LED DRIVER RGLTR DIM TSOT23-5 LED Driver IC For Cellular Phones

CAT4137TD-GT3 IC LED DRIVER RGLTR DIM TSOT23-5 LED Driver IC For Cellular Phones

Contact : Abby Zhang E-mail: WhatsApp: 0086 188 1790 2090 skype : ascoavi Item number :CAT4137TD-GT3 Package:TSOT23-5 Packaging:3000pcs/reel perating Temperature:-40°C ~ 85°C (TA) Voltage - Supply (Max):5.5V Voltage - Supply (Min):2.2V Current - Output / Channel:30mA

Product details


Best price CAT4137TD-GT3    CMOS Boost Converter - White LED Driver


 all integrated circuit/IC and electronic components from the largest independent distributor of China


Contact person : Abby   Zhang   skype : ascoavi   QQ:894663976  e-mail: sales @  Cell phone : 86-188 1790 2090  WhatsApp: 0086 188 1790 2090 Wechat:zca18817902090



„ Drives up to 5 White LEDs from 3V
„ Power Efficiency up to 87%
„ Low Quiescent Ground Current 0.1mA
„ Adjustable Output Current (up to 30mA)
„ High Frequency 1MHz Operation
„ “Zero” current shutdown mode
„ Operates down to 2V (from two AA batteries)
„ Soft start power-up
„ Open LED low power mode
„ Automatic shutdown at 1.9V (UVLO)
„ Thermal shutdown protection
„ Thin SOT23 5-Lead (1mm max height)

„ LCD Backlighting
„ Cellular Phones
„ Handheld Devices
„ Digital Cameras

The CAT4137 is a DC/DC step-up converter that
delivers a regulated output current. Operation at a
constant switching frequency of 1MHz allows the
device to be used with small value external ceramic
capacitors and inductor.
The device drives a string of white LEDs connected
in series and provides the regulated current to control
the LEDs with inherent uniform brightness and
matching. An external resistor R1 sets the output
current and allows up to 30mA current to be
supported over a wide range of input supply voltages
from 2.2V to 5.5V, making the device ideal for
battery-powered applications.
LED dimming can be done by using a DC voltage, a
logic signal, or a pulse width modulation (PWM)
signal. The shutdown control pin allows the device to
be placed in power-down mode with “zero” quiescent
In addition to thermal protection and overload current
limiting, the device also enters a very low power
operating mode during “Open LED” fault conditions.
The device is housed in a low profile (1mm max
height) 5-lead thin SOT23 package for space critical







1.We will ship the items within 2 working days after the payment is reached.


2.We can ship to you by UPS/ DHL/TNT/EMS/Fedex. Pls contact us directly and we will use your

preferred ways. For the Countries & Regions where EMS cannot deliver,pls choose other shipping ways.


3.We are not responsible for any accidents, delays or other issues that are the responsibility of the shipping service.


4.Any import fees or charges are the buyer's responsibility.



1.T/T in advance


3.western union gram


6.Net 1-30  (only old customer)

Company Information 

Asco Technology Co.,Limited is a leading distributor of  Diode and transistor  electronic components worldwide, dealing with semiconductors and transistors. We offer products for not only components currently in production, but also for obsolete parts. We strive to provide exemplary quality products and competitive pricing to all our customers overseas , also we do our best to provide solutions to all customers needs. We hope to get to know with more international friends sincerely, mutual reciprocity and mutual benefit , close cooperation and prosperity of creating together.





 1)The part we quote are 100% original quality assurance in stock,we also can offer samples for not have minimum quantity limited.

2)Have a high reputation in our cooperate company and factory.


3)Our payment term include: T/T, West Union or paypal.


4)Fast delievery .1-2days .A large of stock to offer .

5)We are Alibaba memeber  nearly 8years .

                                 Our Team

Our Services


Refund & Replacement




1.We provide 365 days warranty.


2.If the item you purchase from our store are not of perfected quality, that is they don't work electronically to   manufacturers specifications, simply return them to us for replacement or refund.


3.If the items is defective, pls notify us within 3 days of delivery.


4.Any items must be returned in their original condition to qualify for a refund or replacement.


5.The buyer is responsible for all the shipping cost incurre   


Buyer Feedback


  Q & A

1. Q: What is your products quality ?
    A: We offer all parts are new and original .
2. Q:What is your lead time?
    A: 1-2 days. we have own warehouse and stock in large quantity.
3. Q: What is the shipping port?
    A: We ship the goods via Port of HONGKONG or Shenzhen
4. Q: What is your payment terms?
    A: T/T, Paypal, Western union, Money Gram, L/C.
5.Q: What’s your advantage?
        1. Competitive price.
        2. Good quality control.
        3. Fast production and delivery
        4. Low MOQ.
        5. Professional sales and good after-sale service

Contact us

Asco Technology Co.,Limited

T:+0086-18817902090  Fax :86-755-82791035 

WhatsApp:0086-188 1790 2090 skype :ascoavi E-mail:

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Address: RM4311 , 43/F , SEG Plaza , Huaqiang North RD , Futian District , SZ ,GD , CN 518000
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