XC9148 Series
Load Disconnection Function, 1.4A Step-up DC/DC Converters
XC9148 series are synchronous step-up DC/DC converters with a 0.17Ω Nch driver FET and a 0.2Ω synchronous Pch switching FET built-in.
The series are able to start operation from an input voltage of 0.9V, suitable for equipment using single Alkaline battery or Nickel metal hydride battery.
The output voltage can be set from 1.8V to 5.5V in steps of 0.1V. During the devices enter stand-by mode, A/D/G/J types prevent the application malfunction by CL Discharge function which can quickly discharge the electric charge at the output capacitor (CL). B/E/H/K types are able to allow the drive of subsequent devices by the bypass function which maintain continuity between the input and output. C/F/M/L types are able to connect in parallel with other power supplies by Load Disconnection function which breaks continuity between the input and output.
G/H/M/J/K/L types are able to stop the operation of the IC and reduce leakage of alkaline batteries when the battery voltage drops by the UVLO function. The release voltage of UVLO is 1.6V.
Typical Application Circuit
Features
| Input Voltage Range | 0.65V ~ 6.0V (Operation Start Voltage : 0.9V) |
|---|---|
| Fixed Output Voltage | 1.8V ~ 5.5V (A,B,C Type) 2.2V ~ 5.5V (Except A,B,C Type) |
| Oscillation Frequency | 1.2MHz 3.0MHz |
| Output Current | 750mA @VOUT=5.0V, VBAT=3.3V 500mA @VOUT=3.3V, VBAT=1.8V |
| Control Mode Selection | PWM/PFM |
| Load Transient Response | 100mV@VOUT=3.3V, VBAT=1.8V, fosc=3.0MHz IOUT=1mA→200mA (tr=5μs) |
| Protection Function | Thermal shutdown Current Limit Integral Latch Method(D/E/F/J/K/L Types) Short Circuit Protection (D/E/F/J/K/L Types) UVLO (G/H/M/J/K/L Types) |
| Functions | Soft-start Load Disconnection (A/C/D/F/G/M/J/L Type) CL Auto Discharge (A/D/G/J Type) Bypass Switch(E/H/K Type) |
| Output Capacitor | Ceramic Capacitor |
| Operating Ambient Temperature | -40℃ ～ 105℃ |
| Environmentally Friendly | EU RoHS Compliant, Pb Free |
Packages
| Package | SOT-89-5 | Number of Pins | 5 |
|---|---|---|---|
| Pcs/Reel | 1,000 | Package Size(mm) | 4.5 x 4.6 x 1.6 |
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| Package | USP-6C | Number of Pins | 6 |
|---|---|---|---|
| Pcs/Reel | 3,000 | Package Size(mm) | 1.8 x 2.0 x 0.6 |
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