XCL109/10
Step-up Micro DC/DC Converter with Integrated Inductor
Small, Low Cost, Boost Converter for IoT devices and Wearable Applications
The XCL109 and XCL110 are highly integrated Micro DC/DC converters which offers low current consumption and high levels of efficiency over a wide operating temperature range. Various options can be chosen, including load disconnect, bypass mode or a VOUT OR circuit configuration which also allows designers to reduce power consumption when not in use or whilst the final product is in transit to the end user after production.
With a wide output voltage range and many optional functions such as CL Discharge and UVLO to choose from, the XCL109/10 is an ideal Step-Up DC/DC for numerous applications including wearables, smart meters, in-home units, and a whole host of IoT designs.
KEY FEATURES:
- Start-up from 0.9 V and able operate down to 0.65 V once started.
- Low Input Pin Quiescent Current
- 0.12 μA for XCL110 C/F
- 1.2 μA for XCL110 M/L
- Choose from three Stand-By Options at EN=LOW
- Complete Output Disconnect
- Input-to-Output Bypass
- VOUT OR Connection
- Low EMI due to unique Built-in inductor structure
- Tiny PCB Area
- Only 2 MLCC needed externally
- Built-in Inductor, optimised for high efficiency
- Small, Low-Profile Package
- CL-2025-02 (2.5 x 2.0 x 1.04mm)
KEY ELECTRICAL PARAMETERS:
| SERIES | XCL109/10  |
|
| VIN Range | 0.65 V ~ 6.0 V | |
| Operation Start-up Voltage | 0.9V | |
| VOUT Range | 1.8 V ~ 5.5 V (±2.0 %) | |
| Fosc | 3.0 MHz | |
| Quiescent Current | 30 μA | |
| Input Pin Quiescent Current | 0.12 μA | |
| Current Limit | 1.5 A (min.) | |
| Max. Output Current | 610 mA @ VOUT=5.0 V, VIN=3.3 V | |
| 380 mA @ VOUT=3.3 V, VIN=1.8 V | ||
| Control Method | Fixed PWM or PWM/PFM | |
| Features | Load Disconnection & CL Discharge | |
| VOUT "OR“ | ||
| Bypass | ||
| Soft Start | ||
| Protection Functions | Thermal Shutdown | |
| Current Limit | ||
| Short Protection & Latch | ||
| UVLO | ||
| Op, Temperature | -40 ℃ ~ +105 ℃ | |
| Package: | CL-2025-02 | |
TYPICAL APPLICATION CIRCUITS
EFFICIENCY VS. OUTPUT CURRENT
LOAD DISCONNECTION FUNCTION: A/D/G/J TYPES
It is configured to cut off the continuity from the input side to the output side during standby mode (EN = ”L”). For the A/D/G/J types, the CL discharge function operates when the charge in the output capacitance is quickly discharged. In order to prevent the application from malfunction, the charge remaining in the output capacitance.
BYPASS MODE: XCL109 B/E/H/K TYPES
The Pch synchronous switching FET is turned on to connect the input side and output side during the standby mode (EN = ”L”). By operating in this bypass mode, current can be supplied to the output side even during standby mode, and it is possible to drive the subsequent devices. In this configuration, a system that can be driven by a low voltage at the standby or sleep mode, it is set to bypass mode and the input voltage is output to the output side. Where communication or calculation that requires a high drive voltage is performed in the active mode, the system is driven by activating of the IC and performing boosting operation. This operation can dramatically reduce the power consumption in the standby mode and improve the battery life.
OR CONNECTION: XCL110 C/F/M/L TYPES
The XCL110 C/F/M/L types compare the input voltage VIN and output voltage VOUT to optimally control the orientation of the parasitic diode of the Pch synchronous switching FET even during standby mode, so that the input side and output side do not connect through the parasitic diode of the Pch synchronous switching FET. Even if an external voltage higher than the VIN voltage is applied to the output side by controlling this parasitic diode, the input side and output side do not connect, and output OR connection is possible. This type can be used for OR connection is possible such as backup power supply and output OR connection assuming the input of an external power supply. Moreover, the design which suppresses the discharge current from a battery at the time of OR connection is adopted. This can suppress battery discharge during OR connection.
UVLO FUNCTION: G/J/H/K/M/L TYPES
G/H/M/J/K/L types have UVLO function with UVLO release voltage of 1.6V. This UVLO function stops the IC when the battery voltage drops. This function is ideal for applications using 2-cell dry cell batteries or primary lithium batteries to reduce the risk of battery liquid leakage by stopping the IC operation when the battery voltage drops. (UVLO release/detection = 1.6V/1.45V).
DOWNLOAD MORE INFORMATION HERE
