MB3891 Overview
MB3891 is intended to be used in future GSM-phones, Dual Band phones and Dual Mode phones. It contains all the necessary functions to support all Digital, Analog and RF blocks in these phones. A Charge-pump including a Logic Level Translation circuit is built in to support SIM-card (SmartCard) of both 3 and 5 Volt technology.
MB3891 Key Features
- Supply voltage range : 3 V to 5.5 V
- Low power consumption current during standby : 400 µA (MAX)
- 6-channel low-saturation voltage type series regulator : 2.1 V/2 channels, 2.8 V/3 channels, 2.5 V/2.8 V switch
- Error prevention function during Low voltage
- Power on reset function
- 3 V/5 V SW for SIM-Card
- SIM interface function
- Backflow prevention function for Battery-Backup
- Temperature prevention function
MB3891 Applications
- Supply voltage range : 3 V to 5.5 V