AS3647B-ZWLT

Description：IC LED DRV RGLTR I2C 6WLCSP
Series：-
Mfr：ams-OSRAM USA INC.
Package：Tape & Reel (TR)

SKU:8cdd367073d0 Category: LED Drivers IC Brand: ams-OSRAM USA INC.

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Product introduction

Product Detailed Parameters

Description：IC LED DRV RGLTR I2C 6WLCSP
Series：-
Mfr：ams-OSRAM USA INC.
Package：Tape & Reel (TR)
Type：DC DC Regulator
Topology：Step-Up (Boost)
Internal Switch(s)：Yes
Number of Outputs：2
Voltage - Supply (Min)：2.7V
Voltage - Supply (Max)：4.4V
Voltage - Output：2.8V ~ 5.5V
Current - Output / Channel：800mA (Flash)
Frequency：4MHz
Dimming：I2C
Applications：Camera Flash
Operating Temperature：-30°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：6-UFBGA, WLCSP
Supplier Device Package：6-WLCSP (1.5x1.1)
Grade：-
Qualification：-

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AS3647B-ZWLT

Overview

The AS3647B-ZWLT is a dual-output DC-DC LED driver IC manufactured by ams-OSRAM. It utilizes a step-up (boost) topology to regulate current for high-power LEDs. The device supports I2C dimming control and provides an output capability of up to 800mA, specifically configured for flash applications. It is housed in a compact 6-WLCSP package with dimensions of 1.5x1.1 mm.

Feature Summary

Dual-output architecture for independent LED channel regulation
Integrated I2C interface for digital dimming control
Step-up (Boost) converter topology for efficient power management

Applications

Automotive interior monitoring systems
In-cabin camera illumination
Advanced driver assistance system (ADAS) lighting

Procurement Notes

Verify component status as the AS3647B-ZWLT is listed as obsolete and no longer manufactured. Confirm availability through authorized distributors or secondary market channels. Ensure compliance with RoHS standards and check material composition declarations for specific project requirements before integration into new designs.

Selection Notes

Select this component for applications requiring precise I2C-controlled current regulation in space-constrained environments. The WLCSP package suits designs with limited PCB area. Consider the 800mA flash current rating when sizing thermal management solutions. Verify that the boost topology aligns with the input voltage range and LED forward voltage requirements of the target application.

Part Context

This part belongs to the AS3647 series of LED drivers from ams-OSRAM, designed for automotive and mobile lighting applications. The series includes variants such as the AS3647-ZWLT-500. These devices are engineered to provide reliable performance for safety-critical lighting functions, including interior monitoring and exterior illumination support.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the AS3647B-ZWLT is obsolete, engineers should consult official replacement guides or contact ams-OSRAM directly for qualified alternatives.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.