MP5414DV-LF-Z Monolithic Power Systems, IC REG BOOSTThe MP5414DV-LF-Z is a highly-efficient fully-integrated PMU with a current-mode step-up converter, four single-pole/double-throw switches, low drop-out, and a battery charger designed for battery-powered supply applications.The step-up converter can start-up from an input voltage as low as 1.8V. It uses a current-limited variable-frequency control algorithm to optimize efficiency and minimize external component size and cost. The internal low-resistance N-Channel MOSFET switch can withstand up to 10V, allowing the MP5414DV-LF-Z to produce a high output voltage with high efficiency from a dual-cell NiCd/NiMH or single-cell Li-ion battery. In addition, the step-up converter can disconnect all loads from the input DC power supply.The charger features constant-current and constant-voltage charging modes with a programmable charge current (50mA to 300mA), trickle-charge capability, and a charge-status indicator. Charging is enabled with an input voltage greater than 3.5V, and is disabled when unplugged from the AC adaptor. The charger does not need an external reverse-blocking diode.The low-dropout linear regulator operates with low noise from a 2.7V-to-6.5V input voltage, and regulates the output voltage with 2% accuracy from 1.25V to 5V.The MP5414DV-LF-Z is available in a 4mm x 5mm 28-pin QFN package.Applications:• 2-Cell and 3-Cell NiCd/NiMH or Single-cell Li-Ion Battery Consumer Products• 3D Glass Driver• Small LCD Displays Bias Supply• Digital Still and Video Cameras• Smartphones, Netbooks, and Handheld Video Game Consoles 9icnet Electronics is an authorized Monolithic Power Systems distributor.
Feature
- 1.8V Low Voltage Start-Up
- 1.8V to 5.5V Input Range
- Output Disconnect
- Integrated Power MOSFET and Schottky Diode
- Variable Frequency Control
- Current Mode Control with Internal Compensation
- Inrush Current Limiting and Internal Soft-Start
- Input Under-Voltage Lockout
- 0.75% VBATT Accuracy
- Low Reverse-Battery Current (< 1µA)
- Programmable Charge Current
- Charge Status Indication
- No External Sense Resistor
- No External Reverse Blocking Diode
- Low 100mV Dropout at 100mA Output
- Programmable Output Voltage with 2% Accuracy
- Up to 6.5V Input Voltage
- High PSRR: 70dB at 1kHz
- Better Than 0.001%/mA Load Regulation
- Stable With Low-ESR Output Capacitor
