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Product Detailed Parameters
- Description：IC LED DRVR RGLTR PWM UCSP50L1
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR)
- Type：DC DC Regulator
- Topology：Switched Capacitor (Charge Pump)
- Internal Switch(s)：Yes
- Number of Outputs：4
- Voltage - Supply (Min)：2.7V
- Voltage - Supply (Max)：5.5V
- Voltage - Output：-
- Current - Output / Channel：20mA
- Frequency：850kHz
- Dimming：PWM
- Applications：-
- Operating Temperature：-30°C ~ 85°C (TA)
- Mounting Type：Surface Mount
- Package / Case：14-UFBGA, CSPBGA
- Supplier Device Package：UCSP50L1
- Grade：-
- Qualification：-
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Overview
The BD1204GWL-E2 is a ROHM Semiconductor LED lighting driver IC designed for backlight applications. It features a charge pump topology with four constant current output channels, each capable of delivering up to 20 mA. The device operates on an input voltage range of 2.7 V to 5.5 V and functions at a switching frequency of 850 kHz. It is housed in a UCSP50L1 package (UCSP-15) with 15 pins, supporting surface mount installation. The component operates within a temperature range of -30 °C to +85 °C.
Feature Summary
- Integrates a charge pump circuit to drive multiple LED segments from low supply voltages.
- Provides four independent constant current outputs for uniform LED brightness control.
- Supports dual voltage inputs of 3.3V and 5V for flexible system integration.
Applications
- Backlight LED drivers for portable electronic devices
- LED segment lighting systems requiring 3.3V or 5V operation
- Compact display illumination modules
Procurement Notes
Verify the specific suffix E2 for lead-free compliance and RoHS certification status against the manufacturer's latest documentation. Confirm the UCSP50L1 package dimensions and pinout configuration match your PCB layout requirements. Check the current lifecycle status, as availability may be limited due to end-of-life indications. Ensure thermal management aligns with the specified power dissipation limits during operation.
Selection Notes
Select this component when designing circuits requiring four-channel constant current driving for LED backlights within a 2.7V to 5.5V supply range. The integrated charge pump eliminates the need for external inductors, saving board space. Consider the 850 kHz switching frequency for EMI filtering requirements. Verify that the 20 mA per channel output current meets the target LED specifications and that the UCSP50L1 package fits the available footprint.
Part Context
The BD1204GWL-E2 belongs to the BD1204GWL series of LED drivers manufactured by ROHM Semiconductor. These components are specialized interface circuits intended for lighting applications. The part is classified under LED Lighting Drivers and Driver ICs subcategories. It utilizes a grid array package format suitable for high-density surface mount assembly in consumer electronics.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source data. Consult ROHM Semiconductor directly for recommended alternatives or cross-reference options based on specific electrical and mechanical constraints.
