Datasheet4U Logo Datasheet4U.com

MAX868 - Regulated / Adjustable -2x Inverting Charge Pump

General Description

The MAX868 inverting charge pump provides a low-cost and compact means of generating a regulated negative voltage up to -2 x V IN from a positive input voltage between 1.8V and 5.5V.

It uses a pulse-frequencymodulation (PFM) control scheme to generate the regulated negative output voltage.

Key Features

  • o Regulated Negative Output Voltage (up to -2 x VIN) o Ultra-Small, 10-Pin µMAX Package o On-Demand Switching at up to 450kHz o 30µA Quiescent Supply Current o Requires Only Four Small External Capacitors o 1.8V to 5.5V Input Voltage Range o 0.1µA Logic-Controlled Shutdown o Up to 30mA Output Current Ordering Information PART TEMP. RANGE PIN-.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
MAX8680 7-Channel DSC PMIC Maxim Integrated Products
MAX8686 DC-DC Converter Delivers Up To 25A Per Phase Maxim Integrated Products
MAX8688 Digital Power-Supply Controller/Monitor Maxim Integrated Products
MAX8600 Single-/Dual-Input 1-Cell Li Chargers Maxim Integrated Products
MAX8600A Single-Input 1-Cell Li+ Charger Maxim Integrated Products

Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX860 Switched-Capacitor Voltage Converters
MAX863 Dual / High-Efficiency / PFM / Step-Up DC-DC Controller
MAX864 Dual-Output Charge Pump with Shutdown
MAX865 Compact / Dual-Output Charge Pump
MAX866 3.3V/5V or Adjustable-Output / Single-Cell DC-DC Converters

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
19-1290; Rev 1; 2/98 Regulated, Adjustable -2x Inverting Charge Pump MAX868 General Description The MAX868 inverting charge pump provides a low-cost and compact means of generating a regulated negative voltage up to -2 x V IN from a positive input voltage between 1.8V and 5.5V. It uses a pulse-frequencymodulation (PFM) control scheme to generate the regulated negative output voltage. PFM operation is obtained by gating the internal 450kHz oscillator on and off as needed to maintain output voltage regulation. This unique on-demand switching scheme gives the MAX868 excellent light-load efficiency without degrading its fullload operation (up to 30mA), permitting smaller capacitors to take advantage of the oscillator’s high switching frequency.