SC5010H View Datasheet(PDF) - Semtech Corporation

Part Name

Description

MFG CO.

SC5010H

High Efficiency 8-Channel LED Driver with I2C Interface and Phase-Shifted PWM Dimming

Semtech Corporation 

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SC5010H

Applications Information (continued)

external p-channel MOSFET, the input current starts

charging up the output capacitor to the input voltage.

After that, the boost converter enters into soft start

mode.

Fault Protection

SC5010H provides fault detection for low supply voltage,

LED related faults, missing VSYNC input, boost converter

over-voltage and thermal shutdown. The open drain

output pin (FLT) indicates a system fault. The nature of the

fault can be read from the fault status resistor (register

address: 0x00) via I2C interface. Refer to Table 2 for a

description of the Fault Protection Modes.

Other Possible Configurations

Depending on different application requirement, the

SC5010H can also be easily configured to other topology

such as SEPIC (Single-Ended Primary-Inductor Converter)

configuration as shown in Figure 3.

High Output Voltage Configuration

If high output voltage application is required, an addi-

tional external cascode MOSFET can be added on each IO

pin to meet such requirement, please refer to figure 4 for

reference.

In this case, the upper limit on the output voltage is mainly

determined by the rating of the external MOSFET, heat

dissipation, etc.

Vin

(4.5-27V)

PGND

Vcc (5V)

AGND

C1

4 .7 µF

R2

30KΩ

C2

2 .2 µF

R1

10KΩ

Q2

L1

C7

10nF

D1

Q1

R9

0.1Ω

U1 28 27 26 25 24 23 22

R11

C6

R10

Vout

R3

10KΩ

R4

R5

C3

1 µF

R6

100kΩ

1 VCC

2 EN

3 UVLO

4

SCP

5 BG

6

FSET

7

AGND

S C 5010H

IO2 21

IO3 20

IO4 19

18

IO5

IO6 17

IO7 16

IO8 15

R15

20KΩ

8 9 10 11 12 13 14

R7

C4

C5

THP

PAD

R8

SYNC SCL SDA

FLT PWMI

Vcc (5V)

Figure 4 — Cascode Configuration (for high output voltage application)

23

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