Ultra-Low Quiescent Current, Synchronous Step-Down PFM DC/DC Converter with Output voltage selectable function
XC9276 Series ETR05070-001 Ultra-Low Quiescent Current, Synchronous Step-Down PFM DC/DC Converter
with Output voltage selectable function
☆Green Operation compatible ■GENERAL DESCRIPTION
The XC9276 Series is a 150mA step-down synchronous rectification DC/DC converter which has an output voltage switchover function with an ultra-low power consumption circuit and a PFM control.
The efficiency performance at a light load current is dramatically improved by implementing ultra-low power consumption
circuits which has 200nA consumption current, and PFM control method. Additionally two-preset output voltage switchover
function is available with using VSEL pin.
This function can select an appropriate output voltage based on the MCU behavior mode and contribute a power
consumption reduction for a total system. Due to these functions, XC9276 series are suitable for equipment which needs a
high efficiency performance at a light load current, and a long-time battery life.
XC9276 series are compatible to 2.2uH inductor therefore it can reduce an output ripple voltage which is a negative side of
PFM control method, and a PCB board area size. ■FEATURES ■APPLICATIONS
● Smart meter ● Low Power RF ● Sensor Module ● Wearable Devices ● Energy Harvest devices Input Voltage Range : 1.8V ~ 6.0V Output Voltage Setting : 0.6V ~ 3.6V (0.05V step) Output Voltage Accuracy ±20mV (VOUT(T)≦1.0V)
±2.0% (VOUT(T)＞1.0V) Output Current : 150mA Supply Current : 200nA @ VOUT(T)=1.8V (TYP.) Control Method : PFM control Function : Output Voltage selectable function ● Back-up power supply circuit ● Smart card CL Discharge(D Type) ● Devices with 1 Lithium cell UVLO function
Protection Functions : Short Protection Input / Output Capacitor : Ceramic Capacitor Compatible Operation Ambient Temperature : -40 ~ +85℃ Package : WLP-6-03 (1.07 x 1.7 x 0.33mm)
SOT-26W (2.9 x 2.8 x 1.3mm)
USP-8B06 (2.0 x 2.0 x 0.33mm) Environmentally Friendly ■TYPICAL APPLICATION CIRCUIT EU RoHS compliant, Pb Free ■TYPICAL PERFORMANCE
VOUT = 1.8V
L=GLUHK2R201A(2.2μH), CIN,CL=GRM188R61A106ME69(10μF) 100
90 XC9276B1410R-G CIN
(Ceramic) L : 2.2μH
LX VIN 80 VOUT 70 0.7V/150mA (VSET=”L”) …