XCL108
400nA Ultra-Low Quiescent Step-Up Micro DC/DC
The XCL108 is an ultra-low power, ultra-small Step-Up Micro DC/DC with integrated coil
With a quiescent current of only 400nA, this Micro DC/DC converter is one of the lowest in its class.
Coupled with an efficiency which remains at above 88% even at outputs as low as 0.01mA, the XCL108 is ideal for designs requiring long battery life.
Housed in a compact 2.5mm x 2.0mm package, the XCL108 offers an exceptional PCB space-saving solution. Its small size, combined with low power consumption, makes it an ideal choice for battery-powered applications, including wearables, smart meters, and sensor modules.
KEY FEATURES:
- Ultra-low power consumption
- 400nA Quiescent Current
- Standby Current 0µA (typ)
- Long Battery Life
- High efficiency levels even at low output current
- High efficiency levels even at low output current
- Low EMI due to unique Built-in inductor structure
- Tiny PCB Area
- Only 2 MLCC needed externally
- Built-in Inductor, optimised for high efficiency
- CL-2025-02 (2.5 x 2.0 x 1.04mm)
KEY ELECTRICAL PARAMETERS:
| SERIES | XCL108  |
|
| VIN Range | 0.65 V ~ 5.5 V | |
| Operation Start Voltage | 1.6V | |
| VOUT Range | 3.0 V ~ 5.5 V (0.1 V Steps) | |
| Output Current | 390 mA @ VOUT=5.0 V, VIN=3.3 V | |
| 270 mA @ VOUT=3.3 V, VIN=1.8 V | ||
| PFM Switching Current | 200mA (typ.) | |
| Control Method | PWM/PFM Auto | |
| Op, Temperature | -40 ℃ ~ +105 ℃ | |
| Small PCB Area |
23.87mm2 |
|
TYPICAL APPLICATION CIRCUIT
EFFICIENCY VS. OUTPUT CURRENT
Constant Boosting technology ensures ultra-low consumption for MCUs and SoCs, leading to further reduced power consumption. It provides high efficiency at any output current, resulting in longer battery life.
This efficiency also allows for the use of smaller battery capacities and sizes while maintaining improved battery performance
Ta=25oC
CIN=10μF (GRM188R61C106MA73)
CL=20μF (GRM188R61C106MA73 x2)
LOW ELECTROMAGNETIC INTERFERENCE (EMI)
The PCB area and subsequently the length of copper tracks is minimised due to the use of integrated Inductor and small external components.
This results in extremely low radiated noise and excellent EMI performance as illustrated in the graph. The XCL108 passes CISPR 32 CLASS B with good margin.
The graph shows XCL108B331ER-G with VIN = 2.4V, VOUT = 3.3V @ 100mA
MAXIMISE BATTERY LIFE
The XCL108, featuring Load Disconnect Mode, significantly reduces power loss in sleep mode, cutting power consumption by 74% compared to the conventional PWM/PFM XCL102/03 and by 53% compared to the low-power XCL101.
These exceptional power savings in sleep mode can effectively double battery life compared to the XCL102/03, giving users the flexibility to use smaller batteries in space-constrained applications.
The graphs below show the loss comparison with other products, under the following conditions:
Vin=1.8V -> Vout = 3.3V, Active: Iout = 10mA @ 10ms ⇔ Sleep : Iout = 5μA @ 10s
APPLICATION CIRCUIT EXAMPLE
Powering an MCU with a 3V Li primary battery or 1-2 dry cells requires a high-efficiency, low-EMI, low-ripple step-up DC/DC converter that is compact, featuring low quiescent current (Iq), and ensures long battery life.
3V battery
Li Primary (MnO2) : 1.8~3.2V
(SOCl2) : 2.4~3.6V
2-dry cell in series : 1.8~3.2V
For more information on typical application block diagrams, check out our Power Management Solutions Brochure packed with innovative ideas to help you optimise your specific power needs.
