50mA/200mA Inductor Built-in Step-Down “micro DC/DC” Converters
The XCL210 series is a synchronous step-down micro DC/DC converter which integrates an inductor and a control IC in one tiny package (2.0mm×2.5mm, h=1.0mm). An internal coil simplifies the circuit and enables minimization of noise and other operational trouble due to the circuit wiring. A wide operating voltage range of 2.0V to 6.0V enables support for applications that require an internally fixed output voltage from 1.0V to 4.0V(Type A/B/C/D), 0.6V to 0.95V(Type F/H) in increments of 0.05V.
During stand-by, all circuits are shutdown to reduce currentconsumption to as low as 0.1μA 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 UVLO detect Voltage or lower.
The XCL210 integrate CL discharge function which enables the electric charge at the output capacitor CL to be discharged via the internal discharge switch located between the LX and VSS pins. When the devices enter stand-by mode, output voltage quickly returns to the VSS level as a result of this function.
|Jul 1, 2015||
|Step-down "micro DC/DC" converters with ultra-low 0.5μA quiescent current and integrated coil|
Typical Application Circuit
|Input Voltage Range||2.0V～6.0V|
|Output Voltage Range||1.0V～4.0V(±2.0%, Type A/B/C/D)
0.6V~0.95V (±2.0%, Type F/H)
|Output Current||200mA(Type A/C)
Short Circuit Protection
CL Discharge(Type C/D/H)
|Capacitor||Low ESR Ceramic|
|Operating Ambient Temperature||-40℃～+85℃|
|Environmentally Friendly||EU RoHS compliant, Pb free|
|Package||CL-2025-02||Number of Pins||6|
|Pcs/Reel||3,000||Package Size(mm)||2.0 x 2.5 x 1.04|
How does the CL discharge function work?
The function rapidly releases the charge remained in the CL capacitor to make the VOUT pin voltage zero. The VOUT pin voltage does not reach zero immediately after being turned off by the CE function due to the charge remained in the connected CL capacitor. While the charge in the CL capacitor is gradually reaching zero, the LSI continues operating and does not work with the CE pin signal, which may cause a malfunction. This is why the discharge is required when turning off the CE pin. A larger capacitance of the capacitor needs longer time to be discharged.
What does CL mean?
Load capacitor. Other companies often refer to it as COUT.