Description

The XC9111A301MR is an IC chip in the electronic component model category. It belongs to the XC9110/9111 series, which is a group of PFM controlled step-up DC/DC converter/controller ICs. These ICs are designed to generate a low supply voltage for applications that require a longer battery life, such as portable communication equipment. The XC9111A301MR features a built-in 2.5Ω N-channel driver transistor, allowing for a step-up operation with only an externally connected coil, capacitor, and diode. It falls under the SOT-23 & SOT89 small package.

Specifications and features

• Operating (Input) Voltage Range: 0.9V ~ 10.0V
• Output Voltage Range: 1.5V~7.0V (100mV increments, accuracy ± 2.5%)
• Maximum Oscillation Frequency: 100kHz (accuracy ± 15%) 180kHz (for the XC9111 series, duty ratio: 56% at light loads)
• Built-in Switching N-ch Transistor: A/C/E type ON Resistance 2.5Ω (VDD=3.0V)
• External Transistor Types: B/D/F type
• Lx Limit Voltage: E type: more than VDD=2.0V : A/C type: more than VOUT=2.0V
• Low Supply Current: 2.0μ A (When operating, VOUT=3V)
• Small Package: SOT-23 & SOT89 (for XC9111 series), SOT-25, USP-6C

Application Scenarios

• Mobile phones
• Various palm top equipment
• Cameras, VCRs
• Various portable equipment

Comparison

- Generates low supply voltage for longer battery life

- Requires external components (coil, capacitor, and diode) for step-up operation