SC284P datasheet(4/22 Pages) SEMTECH

номер детали	SC284P

подробное описание детали	Dual Channel 2.5MHz, 2.0A Synchronous Buck with Automatic Power Save

PDF	22 Pages

Scroll/Zoom	100%

производитель	SEMTECH [Semtech Corporation]

домашняя страница	http://www.semtech.com

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4 / 22 page

SC284P

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Current Limit Threshold

LIMIT

Channel A & B; Peak LX current

2.25

3.0

3.75

Oscillator Frequency

OSC

Channel A & B

2.0

2.5

3.0

MHz

LX Leakage Current(2)

LK(LX)

Channel A & B; V

IN = 5.5V; LX = 0V; CTL0-2= GND

-0

µA

Channel A & B; V

IN = 5.5V; LX = 5.0V; CTL0-2= GND

Foldback Holding Current

CL_HOLD

Average LX Current, V

OUT =.5V

600

High Side Switch Resistance(3)

DSON_P

Channel A & B; I

LX= 00mA, TJ= 25 °C

mΩ

Low Side Switch Resistance

DSON_N

Channel A & B; I

LX= -00mA, TJ= 25 °C

CTLx Input Current(2)

CTL_

Channel A & B; CTL

0-2=VIN or GND

-2.0

2.0

µA

CTLx Input High Threshold

CTLx_HI

Channel A & B

CTLx Input Low Threshold

CTLx_LO

Channel A & B

0.4

Impedence of PGOOD Low

PGOOD_LO

PGOOD Threshold

PG_TH

VOUT rising

PGOOD Delay

PG_DLY

Asserted

PGOOD= Low

μs

OUT Over Voltage Protection

OVP

Channel A & B

Thermal Shutdown Temperature(4)

Channel A & B

°C

Thermal Shutdown Hysteresis(4)

SD_HYS

Channel A & B

°C

Electrical Characteristics (continued)

Notes:

() The “Output Voltage Tolerance” includes output voltage accuracy, voltage drift over temperature.

(2) A negative current means the current flows from the pin and a positive current means the current flows into the pin.

(3) Measured from VIN

A/B to LXA/B.

(4) Thermal shutdown protection is independent for each channel.

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