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說明

The TPS6021x step-up, regulated charge pumps generate a 3.3-V ±4% output voltage from a 1.8-V to 3.6-V input voltage. These devices are typically powered by two alkaline, NiCd, or NiMH battery cells or by one primary lithium MnO2 (or similar) coin cell and operate down to a minimum supply voltage of 1.6 V. Continuous output current is a minimum of 100 mA for the TPS60210 and TPS60211, and 50 mA for the TPS60212 and TPS60213, all from a 2-V input.

Three operating modes can be programmed using the SNOOZE\ pin. When SNOOZE\ is low, the device is put into snooze mode. In snooze mode, the device operates with a typical quiescent current of 2 uA while the output voltage is maintained at 3.3 V ±6%. This is lower than the self-discharge current of most batteries.

特性

• Regulated 3.3-V Output Voltage From a 1.8-V to 3.6-V Input Voltage Range
• UltraLow Operating Current in Snooze Mode, Typical 2 uA With up to 2-mA Output Current
• Less Than 5-mV_(PP) Output Voltage Ripple Achieved With Push-Pull Topology
• Integrated Low-Battery and Power-Good Detector
• Switching Frequency Can Be Synchronized to External Clock Signal
• Extends Battery Usage With up to 90% Efficiency and 35-uA Quiescent Current
• Easy-To-Design, Low Cost, Low EMI Power Supply Since No Inductors Are Used
• Compact Converter Solution in UltraSmall 10-Pin MSOP With Only Four External Capacitors Required
• Evaluation Module Available (TPS60210EVM-167)
• Applications
  • Replaces DC/DC Converters With Inductors in Battery-Powered Applications Like:
    • Two Battery Cells to 3.3-V Conversion
    • MSP430 Ultralow-Power Microcontroller and Other Battery Powered Microprocessor Systems
    • Glucose Meters and Other Medical Instruments
    • MP3 Portable Audio Players
    • Backup-Battery Boost Converters
    • Cordless Phones, PDAs