XCL301Series ETR28015-001 Inductor Built-in Inverting “micro DC/DC” Converters ■GENERAL DESCRIPTION �GreenOperation Compatible The XCL301 series is a inverting micro DC/DC converter which integrates a P-channel FET, an inductor and a control IC in
one tiny package (2.5mmГ—2.0mm, H=1.00mmMAX). A wide operating voltage range of 2.7V to 5.5V enables support for
applications that require an internally -3.3V fixed output voltage.
The XCL301 series uses automatic PFM/fixed off time PWM. In automatic PFM/fixed off time PWM control, the IC operates by
PFM control when the load is light to achieve high efficiency over the full load range from light to heavy. The device provides a
stable inverting power supply to be configured using only a SBD and two capacitors connected externally.
During stand-by, all circuits are shutdown to reduce current consumption to as low as 0.1ОјA(TYP) or less. With the built-in
UVLO (Under Voltage Lock Out) function, the internal P-channel MOS driver transistor is forced OFF when input voltage
becomes 2.2V or lower. The XCL301 integrate CL High Speed discharge function which enables the electric charge at the output
capacitor CL to be discharged via the internal discharge. в– APPLICATIONS
● ■FEATURES Negative power supply for AMP Input Voltage Range : 2.7V~5.5V Output Voltage : -3.3V ● Negative power supply for LCD ● Negative power supply for CCD Output Current : -50mA@VOUT=-3.3V, VIN=3.3V (TYP) ● General purpose Negative power supply Internal Driver : 1.3Ω (Pch Driver Tr) Quiescent Current : 40μA (TYP.) Control Methods : PFM / Fixed off time PWM Auto Transient Response : -50mV Output Voltage accuracy ±2.0% (VIN=3.3V,VOUT=-3.3V,IOUT=1mA→50mA)
PFM switch Current : 550mA Function : Current Limit
Soft-Start
CL High Speed Discharge
UVLO
CL High Speed Discharge Operating Ambient Temperature : -40пЅћ+85в„ѓ Packages : CL-2025-02 Environmentally Friendly : EU RoHS Compliant, Pb Free в– TYPICAL APPLICATION CIRCUIT в– TYPICAL PERFORMANCE
CHARACTERISTICS
в—ЏEfficiency-Output Voltage 7
L1
VIN 6 1 Lx
SD
CL
10ОјF GND 5 2 VOUT …