Power Management
FemtoBuck DC-DC Regulators and Controllers

Semtech SC189

2.5MHz, 1.5A Synchronous Step Down Switching Regulator in MLPD2X2

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.

Overview

Features

VIN Range: 2.9-5.5V
VOUT Options: 1.0 - 3.3V
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
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

Applications

Bluetooth Radios
DSC and PMPs
GPS Devices
xDSL Systems
POL Regulators
Portable HDD
Wireless LAN

Packaging

MLPD-UT6
SOT23-5

Order Codes

SC189xULTRT: (MLPD-UT6 package), Lead-Free, WEEE and RoHS Compliant, 3,000 pcs, Tape and Reel Only
SC189xSKTRT: (SOT23-5 package), Lead-Free, WEEE and RoHS Compliant, 3,000 pcs, Tape and Reel Only
SC189xEVB: SC189x Evaluation Board for MLPD-UT6 - Standard Size
SC189xEVB-1: SC189x Evaluation Board for MLPD-UT6 - Small Size
SC189xEVB-2: SC189x Evaluation Board for SOT23-5 - Standard Size
SC189xEVB-3: SC189x Evaluation Board for SOT23-5 - Small Size