SC104EVB データシートの表示（PDF） - Semtech Corporation

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SC104EVB

Micro Power Constant-Current DC-DC Converter

Semtech Corporation 

SC104

POWER MANAGEMENT

Pin Descriptions

Pin

Pin Name Pin Function

1

ADJ

Apply a PWM or analog voltage to this pin for dynamic output current adjustment.

2

FB

Connects to the resistor in the ground leg of the series LEDs (feedback for the constant load

current).

3

GND

Ground pin.

4

OUT

Connect to the boost output at the cathode of the schottky diode. This pin is the input for the

over-voltage protection circuit.

5

LX

Internal switch connection. Connect the inductor and the anode of the schottky diode to this pin.

6

IN

Input supply pin. Connect to a battery or power supply.

7

LIM

Current limit set pin. A resistor (RLIM) connected from LIM to GND sets the peak inductor current

limit threshold.

8

EN

Digital input for enable. Connect this pin to ground for shutdown or connect a voltage between

1.2V to 5.0V for enable. A 1MΩ pull-up resistor connecting to IN is also acceptable, provided

10µA > IEN > 300nA.

Marking Information

104

yyww

Marking for the MLP 8 Lead package:

yyww = Date Code (Example: 0012)

 2005 Semtech Corp.

5

www.semtech.com

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