LED

LD7850GSE Datasheet – Step-Down White LED Driver – Leadtrend

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Part Number: LD7850GSE, LD7850GL

Function : High Voltage Step-Down White LED Driver

Package: SOP-8 (EP), MSOP-10 Type

Manufacturer: Leadtrend Technology ( www.leadtrend.com.tw )

Pinout

ld7850gse-datasheet-pinout

Description

The LD7850 is a step-down DC/DC converter, especially designed to drive power white LEDs with constant current. With capability to transfer output voltage up to 60V, the LD7850 can drive a string of up to 15 series-connected power white LEDs and ensure uniform brightness. To optimize the efficiency, the feedback voltage is set to 0.4V. This reduces the power dispassion on the current sense resistor. The other features include under-voltage lockout, over-current protection and dimming function essential for  the white LED applications.

Typical Application

ld7850gse-pdf-circuit

 

 

Features

1. Input Voltage Range: 12V to 70V
2. Hysteresis Mode Control
3. Drive one string of LEDs, VO up to 60V
4. No need output capacitor
5. Analog Dimming Control
6. Over Current Protection
7. Suspend current < 1.5mA

 

LD7850GSE Datasheet


 

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CD4511BPWR Datasheet – BCD-to-7-Segment LED Latch Decoder Driver

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Part Number: CD4511BPWR

Function: CMOS BCD-TO-7-SEGMENT LED LATCH DECODER DRIVERS
Package: TSSOP 16 Pin Type
Manufacturer: Texas Instruments

Pinouts:

CD4511BPWR datasheet

 

Description

CD4511B types are BCD-to-7-segment latch decoder drivers constructed with CMOS logic and n-p-n bipolar transistor output devices on a single monolithic structure. These devices combine the low quiescent power dissipation and high noise immunity features of RCA CMOS with n-p-n bipolar output transistors capable of sourcing up to 25mA. This capability allows the CD4511B types to drive LED’s and other displays directly.

Features

1. High-output-sourcing capability – up to 25mA
2. Input latches for BCD Code storage
3. Lamp Test and Blanking capablility

Other data sheets are available within the file:

CD4511BE, CD4511BEE4, CD4511BF, CD4511BF3A, CD4511BNSR

CD4511BPWR Datasheet PDF

CD4511BPWR pdf

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