RT4531WSC [RICHTEK]

Name: RT4531WSC
Brand: RICHTEK
SKU: RT4531WSC
Availability: InStock

Part No:

RT4531WSC

Category:

Driver ICs

Manufacturer:

RICHTEK

Description:

The RT4531 is a dual-channel current source with high-efficiency asynchronous boost converter for backlight application.

RoHS Status:

Datasheet:

Stock Status:

Available for RFQ

Pricing:

Request Volume Pricing

Quote Response:

Within 24 Hours

Shipping:

In-stock parts ship in 1–2 business days

Specification

Type

Parameter

Junction Temperature

-40°C ~ +125°C

ESD Hbm

2kV

Switching Frequency

1MHz

Supply Current

1.2mA

Package

WL-CSP-9B 1.35x1.35 (BSC)

RoHS Status

RoHS Compliant

RoHS Status

RoHS Compliant

Ambient Temperature

-40°C ~ +85°C

Current Limit

1.5A

Dimming Resolution

10 bit

ESD Mm

200V

Led Current Accuracy

±2%

Led Current Matching

±2%

Operating Voltage

2.5V ~ 5.5V

Over Voltage Protection

36.5V

Power Dissipation

1.22W

Shutdown Current

1µA

Thermal Resistance

81.5°C/W

Products Detail

The RT4531 is a dual-channel current source with high-efficiency asynchronous boost converter for backlight applications. It features built-in 1.5A/36V power MOSFET and two high current-matching capability current sinks, enabling it to drive up to 10s2p white LEDs. The device supports both PWM dimming and 1-wire digital dimming interfaces with 10-bit resolution, and includes comprehensive protection functions such as UVLO, OCP, OVP, and OTP. It optimizes feedback regulation voltage for high efficiency and low voltage headroom control.

Key Features

Input Voltage Range: 2.5V to 5.5V, Internal Soft-Start, UVLO, OTP, OCP, OVP, Typical Shutdown Current: < 1μA, 1MHz Switching Frequency, Drives Up to 10 WLEDs in Two Strings, Independent PWM Dimming and 1-Wire Dimming Control, PWM Dimming Frequency from 20k to 100kHz, Up to 10 Bit Dimming Resolution, LED Current Accuracy ±2% (I = 20mA), LED Current Matching ±2% (I = 20mA), Built-in IFB1/IFB2 pin OVP, Short Protection, and Un-Use Detection

Application scenarios

Smart Phones
Probable Instruments
Backlight for Small and Media Form Factor LCD Display with Single-cell Battery Input

Documents

Datasheets:

RT4531

Environmental Information:

RoHS2 Cert

Product FAQ

1. Is RT4531WSC available for RFQ?

Yes. RT4531WSC by RICHTEK is available for RFQ. Submit your required quantity and our team will confirm real-time stock, lead time, and volume pricing.

2. Why is there no fixed price for RT4531WSC?

Pricing for RT4531WSC can vary by order quantity, market availability, date code, packaging, and delivery destination. Request a quote to receive the latest volume pricing.

3. What are the key specifications of RT4531WSC?

RT4531WSC is a RICHTEK Driver ICs with Over Voltage Protection: 36.5V and Junction Temperature: -40°C ~ +125°C. Review the product details or submit an RFQ if you need confirmation before purchase.

4. How fast can I get a quote for RT4531WSC?

Our sales team usually responds within 24 hours after receiving your RFQ. The quote may include stock status, unit price, lead time, shipping options, and available alternatives.

5. How soon can RT4531WSC be shipped?

If stock is confirmed, in-stock parts can usually ship within 1–2 business days. Final lead time depends on quantity, stock source, and delivery destination.

6. Can you suggest alternatives to RT4531WSC?

Yes. If RT4531WSC is unavailable, obsolete, or does not meet your required lead time, we can help check similar RICHTEK Driver ICs parts or compatible alternatives.

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