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The RT4531 is a dual-channel current source with high efficiency asynchronous boost converter for backlight application. The RT4531 has built-in 1.5A/36V power MOSFET and two high current-matching capability current sink, so RT4531 can drives up 10 series x 2 parallel white LEDs. The RT4531 can allow very low voltage headroom control, therefore to improve LED strings efficiency effectively. The RT4531 supports both PWM dimming and 1-wire digital dimming interface and it can realize 10 bit brightness code programming.
The RT4531 provides complete protection functions such as input Under-Voltage Lockout (UVLO), Over-Current Protection (OCP), Output over Voltage (OVP) and Over Temperature Protection (OTP).The RT4531 optimizes the feedback regulation voltage to provide high efficiency and also high current matching, within +/-2%
Manufacturer | Richtek USA Inc. |
---|---|
Category | Lighting |
Sub-Category | LED Drivers - DC In |
Eval Board Part Number | EVB_RT4531WSC-ND |
Eval Board Supplier | Richtek USA Inc. |
Eval Board |
Normally In Stock
|
Voltage In |
2.5 ~ 5.5 V
|
Topology |
Step Up
|
Current Out |
20 mA
|
Voltage Out (Max) |
36 V
|
Outputs and Type |
2 Non-Isolated
|
Efficiency @ Conditions |
>80%, 3.6V in, 31V @ 10 ~ 20 mA (10s2p)
|
Features |
1-Wire Interface
Over Current Protection Over Voltage Protection PWM Interface Thermal Protection Under Voltage Protection, Brown-Out |
Switching Frequency |
1 MHz
|
Component Count + Extras |
31 + 0
|
Design Author |
Richtek USA Inc.
|
Application / Target Market |
Cell Phones
Handheld games LCD Backlighting Tablets |
Main I.C. Base Part |
RT4531
|
Date Created By Author | 2017-11 |
Date Added To Library | 2022-06 |
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Orders are typically delivered to China within 4 days depending on location.
Free delivery to China on orders of $100 USD or more. A delivery charge of $30 USD will be billed on all orders less than $100 USD.
CPT if prepay and add, FCA Thief River Falls if billing to a shipper account as defined by INCOTERMS 2010
Customer is responsible for all applicable duties, tariffs, brokerage fees and taxes
Credit account for qualified institutions and businesses
Payment in Advance by Wire Transfer
More Products From Fully Authorized Partners
Average Time to Ship 1-3 Days, extra ship charges may apply. Please see product page, cart, and checkout for actual ship speed.
Incoterms: CPT (Duty, customs, and applicable VAT/Tax due at time of delivery)
For more information visit Help & Support
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