SC414 Ver la hoja de datos (PDF) - Semtech Corporation

Número de pieza

componentes Descripción

Fabricante

SC414

6A Integrated FET Regulator with 5V LDO

Semtech Corporation 

SC414/SC424

Electrical Characteristics (continued)

Parameter

Conditions

Min Typ Max Units

Input Supplies (continued)

V5V Supply Current

FB Comparator Threshold

Frequency Range

Bootstrap Switch Resistance

ENL, EN/PSV = 0V , V5V = 5V

ENL, EN/PSV = 0V , V5V = 3V

3

7

μA

2

SC414, EN/PSV = V5V, no load (fSW = 25kHz),

1

V > 750mV(2)

FB

SC424, EN/PSV = V5V, no load, V > 750mV(2)

FB

0.4

mA

V5V = 5V, f = 250kHz, EN/PSV = floating, no load(2)

4

SW

V5V = 3V, f = 250kHz, EN/PSV = floating, no load(2)

2.5

SW

Static V and load, 0 to +85 °C, V5V = 3V or 5V

0.744 0.750 0.756

V

IN

Static V and load, -40 to +85 °C, V5V = 3V or 5V 0.7425

IN

0.7575 V

Continuous mode operation

Minimum f , (SC414 only), EN/PSV = V5V, no load

SW

1000

kHz

25

10

Ω

Timing

On-Time

Continuous mode operation,

V = 15V, V = 3V, R = 300kΩ

IN

OUT

TON

V5V < 4.5V(3)

1350 1500 1650 ns

Minimum On-Time (2)

80

ns

Minimum Off-Time (2)

V5V = 5V

V5V = 3V

320

ns

390

Soft-Start

Soft-Start Ramp Time (2)

1.7

ms

Analog Inputs/Outputs

VOUT Input Resistance

500

kΩ

Current Sense

Zero-Crossing Detector Threshold

LX - PGND, V5V = 3V or 5V

-3

0

+3

mV

5

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