MAX870 Datasheet
Part Number |
MAX870 |
Manufacturers |
Maxim |
Logo |
|
Description |
Switched-Capacitor Voltage Inverters |
Datasheet |
MAX870 Datasheet (PDF) |
19-1240; Rev 0; 6/97
Switched-Capacitor Voltage Inverters
_______________General Description
The ultra-small MAX870/MAX871 monolithic, CMOS charge-pump inverters accept input voltages ranging from +1.4V to +5.5V. The MAX870 operates at 125kHz, and the MAX871 operates at 500kHz. Their high efficiency (90%) and low operating current (0.7mA for the MAX870) make these devices ideal for both battery-powered and board-level voltage-conversion applications. Oscillator control circuitry and four power MOSFET switches are included on-chip. A typical MAX870/ MAX871 application is generating a -5V supply from a +5V logic supply to power analog circuitry. Both parts come in a 5-pin SOT23-5 package and can deliver 25mA with a voltage drop of 500mV. For applications requiring more power, the MAX860 delivers up to 50mA with a voltage drop of 600mV, in a space-saving µMAX package.
____________________________Features
o 5-Pin SOT23-5 Package o 99% Voltage Conversion Efficiency o Invert Input Supply V.
Part Number |
MAX879L |
Manufacturers |
Maxim Integrated Products |
Logo |
|
Description |
(MAX877L - MAX879L) Step-Up & Down DC-DC Converters |
Datasheet |
MAX879L Datasheet (PDF) |
19-0186; Rev 2; 7/96
NUAL KIT MA ATION U EET L H A S V E TA WS DA FOLLO
Low-Voltage Input, 3V/3.3V/5V/ Adjustable Output, Step-Up DC-DC Converters
____________________________Features
o 1V to 4.5V Input Guarantees Start-Up Under Load o Up to 210mA Output o Load Fully Disconnected in Shutdown o 82% Efficiency o Output in Regulation with Input Voltage above Output Voltage o Internal 1A Power Switch and Active Rectifier o Adjustable Current Limit Allows Low-Cost Inductors o 190µA No Load Supply Current o 20µA Shutdown Supply Current o 3V/3.3V (MAX778L), 5V (MAX777L), and Adjustable (MAX779L) Output Voltage
_______________General Description
The MAX777L/MAX778L/MAX779L are pulse-skipping DC-D.
Part Number |
MAX8798 |
Manufacturers |
Maxim Integrated Products |
Logo |
|
Description |
Internal-Switch Boost Regulator |
Datasheet |
MAX8798 Datasheet (PDF) |
19-0971; Rev 0; 9/07
Internal-Switch Boost Regulator with Integrated 3-Channel Scan Driver for TFT LCDs
General Description
The MAX8798 includes a high-performance, step-up regulator; a high-speed operational amplifier; a digitally adjustable VCOM calibration device with nonvolatile memory and an I2C interface; and a high-voltage, levelshifting scan driver. The device is optimized for thin-film transistor (TFT) liquid-crystal display (LCD) applications. The step-up DC-DC converter provides the regulated supply voltage for panel source driver ICs. The high switching frequency allows the use of ultra-small inductors and ceramic capacitors. The current-mode control architecture provides fast t.
Part Number |
MAX8797 |
Manufacturers |
Maxim |
Logo |
|
Description |
1-Phase Quick-PWM Intel IMVP-6/GMCH Controller |
Datasheet |
MAX8797 Datasheet (PDF) |
CONFIDENTIAL INFORMATION—RESTRICTED TO INTEL® IMVP-6 LICENSEES
19-2452; Rev 1; 8/08
KIT ATION EVALU E L B A IL AVA
1-Phase Quick-PWM Intel IMVP-6/GMCH Controller
General Description Features
o 1-Phase Quick-PWM Controller o ±0.5% VOUT Accuracy Over Line, Load, and Temperature o 7-Bit IMVP-6 DAC (MAX8796/MAX17401 Only) o 5-Bit GMCH DAC o Active Voltage Positioning with Adjustable Gain o Accurate Droop and Current Limit o Remote Output and Ground Sense o Adjustable Output-Voltage Slew Rate o Power-Good Window Comparator o Power Monitor o Temperature Comparator o Drives Large Synchronous Rectifier FETs o 2V to 26V Power Input Range o Adjustable Switching Frequency (600kHz max) o Output Overvo.
Part Number |
MAX8796 |
Manufacturers |
Maxim |
Logo |
|
Description |
1-Phase Quick-PWM Intel IMVP-6/GMCH Controller |
Datasheet |
MAX8796 Datasheet (PDF) |
CONFIDENTIAL INFORMATION—RESTRICTED TO INTEL® IMVP-6 LICENSEES
19-2452; Rev 1; 8/08
KIT ATION EVALU E L B A IL AVA
1-Phase Quick-PWM Intel IMVP-6/GMCH Controller
General Description Features
o 1-Phase Quick-PWM Controller o ±0.5% VOUT Accuracy Over Line, Load, and Temperature o 7-Bit IMVP-6 DAC (MAX8796/MAX17401 Only) o 5-Bit GMCH DAC o Active Voltage Positioning with Adjustable Gain o Accurate Droop and Current Limit o Remote Output and Ground Sense o Adjustable Output-Voltage Slew Rate o Power-Good Window Comparator o Power Monitor o Temperature Comparator o Drives Large Synchronous Rectifier FETs o 2V to 26V Power Input Range o Adjustable Switching Frequency (600kHz max) o Output Overvo.
Part Number |
MAX8795A |
Manufacturers |
Maxim Integrated Products |
Logo |
|
Description |
TFT-LCD DC-DC Converter |
Datasheet |
MAX8795A Datasheet (PDF) |
19-0793; Rev 1; 6/07
KIT ATION EVALU E L B AVAILA
TFT-LCD DC-DC Converter with Operational Amplifiers
General Description Features
o 2.5V to 5.5V Input Supply Range o 1.2MHz Current-Mode Step-Up Regulator Fast Transient Response to Pulsed Load High-Accuracy Output Voltage (1%) Built-In 20V, 3A, 0.16Ω n-Channel MOSFET High Efficiency (85%) o Linear-Regulator Controllers for VGON and VGOFF o High-Performance Operational Amplifiers ±130mA Output Short-Circuit Current 45V/µs Slew Rate 20MHz, -3dB Bandwidth Rail-to-Rail Inputs/Outputs o Logic-Controlled, High-Voltage Switch with Adjustable Delay o Timer-Delay Fault Latch for All Regulator Outputs o Thermal-Overload Protection o 0.6mA Quiescent .
Switched-Capacitor Voltage Inverters
19-1240; Rev 0; 6/97
Switched-Capacitor Voltage Inverters
_______________General Description
The ultra-small MAX870/MAX871 monolithic, CMOS charge-pump inverters accept input voltages ranging from +1.4V to +5.5V. The MAX870 operates at 125kHz, and the MAX871 operates at 500kHz. Their high efficiency (90%) and low operating current (0.7mA for the MAX870) make these devices ideal for both battery-powered and board-level voltage-conversion applications. Oscillator control circuitry and four power MOSFET switches are included on-chip. A typical MAX870/ MAX871 application is generating a -5V supply from a +5V logic supply to power analog circuitry. Both parts come in a 5-pin SOT23-5 package and can deliver 25mA with a voltage drop of 500mV. For applications requiring more power, the MAX860 delivers up to 50mA with a voltage drop of 600mV, in a space-saving µMAX package.
____________________________Features
o 5-Pin SOT23-5 Package o 99% Voltage Conversion Efficiency o Invert Input Supply Voltage o 0.7mA Quiescent Current (MAX870) o +1.4V to +5.5V Input Voltage Range o Require Only Two Capacitors o 25mA Output Current o Shutdown Control
MAX870/MAX871
______________Ordering Information
PART MAX870C/D MAX870EUK MAX871C/D MAX871EUK TEMP. RANGE 0°C to +70°C -40°C to +85°C 0°C to +70°C -40°C to +85°C PINPACKAGE Dice* 5 SOT23-5 Dice* 5 SOT23-5 SOT TOP MARK — ABZN — ABZO
________________________Applications
Local -5V Supply from 5V Logic Supply Small LCD Panels Cell Phones Medical Ins.
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