XCL104/05
XCL104/XCL105 Step-up Micro DC/DC Converter with Integrated Coil
Multifunction 1.4A Boost Micro DC/DC Converter with small COOLPOST package size.
The XCL104 and XCL105 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 implement a shipping-mode function, to reduce power consumption when not in use (or whilst the final product is in transit).
With a wide output voltage range and many optional functions such as CL Auto Discharge and UVLO to choose from, the XCL104/05 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:
- COOLPOST Package with integrated Coil
- Ultra small size, only 3.0 x 3.0 x 1.7mm
- Internal Copper Cool Posts for improved thermal performance.
- Ultra-low power consumption
- Low IQ for a step-up DC/DC, only 19 μA
- Typically, 0.01 μA in standby
- Long battery life
- Efficiency remains high at low output levels
- EN pin for implementing shipping mode function
- Iq_IN only 0.12 μA in shipping mode
- Three options available
-
Load Disconnection (with optional CL Discharge)
-
VOUT "OR“ (with optional shipping mode)
-
Bypass (Input-to-Output Bypass)
-
KEY ELECTRICAL PARAMETERS:
| SERIES | ||||
| VIN Range: | 0.65 V ~ 6.0 V (Abs Max 7.0 V) | |||
| Op. Start Voltage: |
0.9V |
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|
VOUT Range: |
1.8 V ~ 5.5 V (±2.0 %) |
|||
| Fosc: | 1.2 MHz | |||
| Low IQ: | 19 μA | |||
| Stby Current: | 0.01 μA | |||
| Input Current Limit: | 1.4 A (typ.) | |||
| Min. Output Current: | 710 mA @ VOUT=5.0 V, VIN=3.3 V | |||
| Control Method: | PWM or PWM/PFM | |||
|
Features: |
Load Disconnection & CL Discharge | |||
| VOUT "OR“ | ||||
| Bypass | ||||
| CE with Soft Start | ||||
| Protection Circuits: | Thermal Shutdown | |||
| Current Limit | ||||
| Short Protection & Latch | ||||
| UVLO | ||||
| Op, Temperature: | -40 oC ~ +105 oC | |||
| Package: | DFN3030-10B | |||
TYPICAL APPLICATION CIRCUIT
DFN3030-10B COOLPOST PACKAGE
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=LOW). For the A/D/G/J types, the CL discharge function operates when the charge in the output capacitance is quickly discharged. To prevent the application from malfunction, the charge remaining in the output capacitance.
BYPASS MODE: XCL105 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 = LOW). 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: XCL105 C/F/M/L TYPES
The XCL105 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.
SELECTION GUIDE
| TYPE | PURPOSE | UVLO | CL Discharge |
Current Limit | Short Protection |
Stand-by Options at EN=”L” |
| G | Load Disconnection | Yes | Yes |
Yes (Without latch) |
- | Complete Output Disconnect |
| J |
Yes (With integral latch) |
Yes | ||||
| E | Bypass Mode at EN="L" | - | - |
Yes (With integral latch) |
Yes | Input-to-Output Bypass |
| H | Yes | - |
Yes (Without latch) |
- | ||
| K | - |
Yes (With integral latch) |
Yes | |||
| F | VOUT OR Connection | - | - |
Yes (With integral latch) |
Yes | Complete Output Disconnect |
| M | Yes |
Yes (Without latch) |
- | |||
| L |
Yes (With Integral latch) |
Yes |