Semtech

SC21152

Tiny 1.2A Synchronous Buck Regulator with Power Good

Topologie: Buck
Eingangsspannung (min.): 2.30 V
Eingangsspannung (max.): 5.50 V
Schaltfrequenz (min.): 3600.00 kHz
Schaltfrequenz (max.): 4400.00 kHz
Ausgang 1: 3.30 V / 1.200 A

Erstveröffentlichung am 01.09.2015, Version 1.0

Beschreibung

The SC21152 is an ultra high efficiency 1.2A DC/DC buckregulator available in a small MLPD package. These featuresmake the SC21152 perfect for small form factor consumerapplications where high efficiency is essential.SC21152 is an Adaptive On-Time 4MHz switching regulatorat full load conditions. Under light load conditions ittransitions into PFM Power Save Mode and reduces switchingfrequency thus saving energy. High switching frequencyoperation allows the use of a very small 0.47μHinductor along with small input and output capacitors tominimize overall circuit size.The SC21152 is highly configurable with a wide range offactory options including internal soft start time, fixed oradjustable output voltage, automatic output discharge,and switching frequency.The SC21152 is offered in a small 6-Lead 1.5mm x 2mmMLPD package.

Merkmale

  • Input voltage range — 2.3V to 5.5V1.2A continuous output current4MHz switching frequencyAdjustable Output Voltage1% output voltage accuracyAdaptive On-Time architectureUp to 100% duty cycleUp to 96% peak efficiencyPower Save mode for efficient light load operation>90% efficiency 30mA to 75mA0.1μA shutdown current21μA quiescent currentPower Good IndicatorPre-bias startup protectionInternal soft start1.5mm x 2mm, 6-Lead MLPD packageWEEE and RoHS compliant and halogen-free

Artikel

  Artikel Nr. SPEC Produktserie L
(µH)
IR 1
(mA)
IR 2
(mA)
ISAT
(mA)
RDC
(mΩ)
fres
(MHz)
Typ H
(mm)
Muster
74479876147 PDF WE-PMI Power-Multilayer-Induktivität 0.47 1500 2100 2000 40 120 Low RDC & High Saturation Current 1