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MAX8727

Maxim
Part Number MAX8727
Manufacturer Maxim
Description TFT-LCD Step-Up DC-DC Converter
Published Apr 21, 2010
Detailed Description MAX8727 19-3480; Rev 1; 8/05 EVAALVUAAILTAIOBNLEKIT TFT-LCD Step-Up DC-DC Converter General Description The MAX8727 i...
Datasheet PDF File MAX8727 PDF File

MAX8727
MAX8727

Overview
MAX8727 19-3480; Rev 1; 8/05 EVAALVUAAILTAIOBNLEKIT TFT-LCD Step-Up DC-DC Converter General Description The MAX8727 is a high-performance step-up DC-DC converter that provides a regulated supply voltage for active-matrix thin-film transistor (TFT) liquid-crystal displays (LCDs).
The MAX8727 incorporates currentmode, fixed-frequency, pulse-width modulation (PWM) circuitry with a built-in n-channel power MOSFET to achieve high efficiency and fast transient response.
Users can select 640kHz or 1.
2MHz operation using a logic input pin (FREQ).
The high switching frequencies allow the use of ultra-small inductors and low-ESR ceramic capacitors.
The current-mode architecture provides fast transient response to pulsed loads.
A compensation pin (COMP) gives users flexibility in adjusting loop dynamics.
The 30V internal MOSFET can generate output voltages up to 24V from an input voltage between 2.
6V and 5.
5V.
Soft-start slowly ramps the input current and is programmed with an external capacitor.
The MAX8727 is available in a 10-pin thin DFN package.
Applications Notebook Computer Displays LCD Monitor Panels Features ♦ 90% Efficiency ♦ Adjustable Output from VIN to 24V ♦ 2.
6V to 5.
5V Input Supply Range ♦ Input Supply Undervoltage Lockout ♦ Pin-Programmable 640kHz/1.
2MHz Switching Frequency ♦ Programmable Soft-Start ♦ 0.
1µA Shutdown Current ♦ Small 10-Pin Thin DFN Package Ordering Information PART TEMP RANGE MAX8727ETB -40°C to +85°C MAX8727ETB+ -40°C to +85°C +Denotes lead-free package.
PIN-PACKAGE 10 Thin DFN 3mm x 3mm 10 Thin DFN 3mm x 3mm Pin Configuration TOP VIEW COMP 1 FB 2 SHDN 3 GND 4 GND 5 MAX8727 THIN DFN 3mm x 3mm 10 SS 9 FREQ 8 IN 7 LX 6 LX Minimal Operating Circuit VIN 2.
6V TO 5.
5V VOUT 8 IN 6 LX 7 LX FB 2 9 FREQ 3 SHDN MAX8727 GND 5 GND 4 10 SS COMP 1 ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-6...


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