SC414 datasheet(5/29 Pages) SEMTECH

Part #	SC414

Description	6A Integrated FET Regulator with 5V LDO

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Manufacturer	SEMTECH [Semtech Corporation]

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SC414/SC424

5

Electrical Characteristics (continued)

Parameter

Conditions

Min

Typ

Max

Units

Input Supplies (continued)

V5V Supply Current

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

3

7

μA

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

2

SC414, EN/PSV = V5V, no load (f

SW

= 25kHz),

V

FB

> 750mV(2)

1

mA

SC424, EN/PSV = V5V, no load, V

FB

> 750mV(2)

0.4

V5V = 5V, f

SW

= 250kHz, EN/PSV = floating, no load(2)

4

V5V = 3V, f

SW

= 250kHz, EN/PSV = floating, no load(2)

2.5

FB Comparator Threshold

Static V

IN

and load, 0 to +85 °C, V5V = 3V or 5V

0.744

0.750

0.756

V

Static V

IN

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

0.7425

0.7575

V

Frequency Range

Continuous mode operation

1000

kHz

Minimum f

SW

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

25

Bootstrap Switch Resistance

10

Ω

Timing

On-Time

Continuous mode operation,

V

IN

= 15V, V

OUT

= 3V, R

TON

= 300kΩ

1350

1500

1650

ns

V5V < 4.5V(3)

Minimum On-Time (2)

80

ns

Minimum Off-Time (2)

V5V = 5V

320

ns

V5V = 3V

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

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