SC189YSKTRT Semtech, SC189YSKTRT Datasheet

SC189YSKTRT

Manufacturer Part Number

SC189YSKTRT

Description

2.5MHz, 1.5A Synchronous Step Down Regulator In MLPD2X2

Manufacturer

Semtech

Datasheet

1.SC189ASKTRT.pdf (23 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

SC189YSKTRT

Manufacturer:

EPSON

Quantity:

1 831

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

SC189YSKTRT

Manufacturer:

SEMTECH11

Quantity:

47 571

Current page: 1 of 23
Download datasheet (2Mb)

POWER MANAGEMENT

Features



Applications



Typical Application Circuit

June 01, 2009

2.9V to 5.5V

Up to 1.5A Output Current

Ultra-Small Footprint, <1mm Height Solution

2.5MHz Switching Frequency

Efficiency Up to 93%

Low Output Noise Across Load Range

Excellent Transient Response

Start Up into Pre-Bias Output

100% Duty-Cycle Low Dropout Operation

<1µA Shutdown Current

Internal Soft Start

Input Under-Voltage Lockout

Output Over-Voltage, Current Limit Protection

Over-Temperature Protection

Adjustable Output Voltage

Available in SOT23-5 package and 2mm x 2mm x

0.6mm thermally enhanced MLPD-UT6 package

-40 to +85°C Temperature Range

Fully WEEE and RoHS Compliant

Bluetooth Radios

DSC and PMPs

GPS Devices

xDSL Systems

POL Regulators

Portable HDD

Wireless LAN

OUT

Range: 2.9 – 5.5V

Options: 1.0 - 3.3V

10µF

SC189C

VIN

GND

VOUT

1µH

22µF

OUT

Description

The SC189 is a high efficiency, synchronous step-down

regulator providing up to 1.5A output current in either

an ultra-small 2mm x 2mm, low profile package or a low

cost SOT23-5 package. The device requires only three

external filter components for a complete step down

regulator solution. The input voltage range is 2.9 to 5.5V

with either factory programmed outputs from 1.0 to 3.3V

or adjustable output via an external resistor divider.

The converter operates at fixed 2.5MHz switching

frequency allowing small L/C filtering components.

The voltage mode architecture is compatible with chip

inductors and capacitors for minimum PCB footprint and

lowest overall system cost. Total footprint of 25mm

be achieved - making the SC189 the ideal solution for

high density systems. Solution height of <1mm is also

possible.

Up to 93% efficiency is achieved with low R

switches. PWM constant frequency operation ensures

low output ripple across the load range. 100% duty-cycle

provides 360mV dropout voltage at 1.5A which extends

the minimum input voltage for 2.5V and 3.3V outputs.

Excellent transient response is achieved with no external

compensation components.

The SC189 provides input under-voltage, output over-

voltage, output short circuit and over-temperature

protection to safeguard the device and system under fault

conditions. The regulator provides integrated soft-start to

minimize inrush currents. Standby quiescient current is

less than 1µA.

The SC189 is available in SOT23-5 and a thermally

enhanced 2mm x 2mm x 0.6mm MLPD-UT6 package

rated from -40 to +85°C.

1.20V/1.5A

OUT

2.5MHz, 1.5A Synchronous

Actual Size

Step Down Regulator

0805

OUT

Total PCB Area ~25mm

SC189

Chip

www.semtech.com

SC189

DS(ON)

0603

internal

can

Related parts for SC189YSKTRT

Related keywords

SC189YSKTRT datasheet
SC189YSKTRT data sheet
SC189YSKTRT pdf datasheet
SC189YSKTRT component
SC189YSKTRT part
SC189YSKTRT distributor
SC189YSKTRT RoHS
SC189YSKTRT datasheet download