MAX17126ETM+

Product Summary

The MAX17126ETM+ is a kind of multi-Output power supply with VCOM amplifier and high-voltage Gamma reference for LCD TVs. The MAX17126ETM+ generates all the supply rails for thin-film transistor liquid-crystal display (TFT LCD) TV panels operating from a regulated 12V input.The MAX17126ETM+ includes a step-down and a step-up regulator, a positive and a negative charge pump, an operational amplifier, a high-accuracy high-voltage gamma reference, and a high-voltage switch control block.The MAX17126ETM+ can operate from input voltages from 8V to 16.5V and is optimized for an LCD TV panel running directly from 12V supplies. The MAX17126ETM+ is widely used in LCD TV panels.

Parametrics

MAX17126ETM+ absolute maximum ratings: (1)INVL, IN2, VOP, EN, FSEL to GND: -0.3V to +24V; (2)PGND, OGND, CPGND to GND: -0.3V to +0.3V; (3)DLY1, GVOFF, THR, VL to GND: -0.3V to +7.5V; (4)REF, FBP, FBN, FB1, FB2, COMP, SS, CLIM, PGOOD, VDET, VREF_FB, OUT to GND: -0.3V, (VL+ 0.3); (5)GD, GD_I to GND: -0.3V to +24V; (6)LX1 to PGND: -0.3V to +24V; (7)OPP, OPN, OPO to OGND: -0.3V to VOP + 0.3V; (8)DRVP to CPGND. -0.3V to SUPP: + 0.3V; (9)DRVN to CPGND. -0.3V to SUPN: + 0.3V; (10)LX2 to PGND: -0.7 to (IN2 + 0.3V); (11)SUPN to GND: -0.3V to (IN2 + 0.3V); (12)SUPP to GND: -0.3V to (GD_I + 0.3V); (13)BST to VL: -0.3V to +30V; (14)VGH to GND: -0.3V to +40V; (15)VGHM, DRN to GND: -0.3V, VGH + 0.3V; (16)VGHM to DRN: -0.3V to +40V; (17)VREF_I to GND: -0.3V to +24V; (18)VREF_O to GND: -0.3V, (VREF_I + 0.3)V; (19)REF Short Circuit to GND: Continuous; (20)RMS LX1 Current (total for both pins): 3.2 A; (21)RMS PGND CURRENT (total for both pins): 3.2 A; (22)RMS IN2 Current (total for both pins): 3.2 A; (23)RMS LX2 Current (total for both pins): 3.2 A; (24)RMS DRVN, DRVP Current: 0.8A; (25)RMS VL Current: 50mA; (26)Continuous Power Dissipation (TA = +70℃) 48-Pin TQFN; (27)(derated 38.5mW/℃ above +70℃): 3076.9mW; (28)Junction Temperature: +160℃; (29)Storage Temperature Range: -65℃ to +165℃; (30)Lead Temperature (soldering, 10s): +300℃; (31)Soldering Temperature (reflow): +260℃.

Features

MAX17126ETM+ features: (1)8.0V to 16.5V IN Supply-Voltage Range; (2)Selectable Frequency (500kHz/750kHz); (3)Current-Mode Step-Up Regulator; (4)Current-Mode Step-Down Regulator; (5)Adjustable Positive Charge-Pump Regulator; (6)Adjustable Negative Charge-Pump Regulator; (7)Integrated High-Voltage Switch with Adjustable Turn-On Delay; (8)High-Speed Operational Amplifier; (9)High-Accuracy Reference for Gamma Buffer; (10)External p-Channel Gate Control for AVDD Sequencing; (11)PGOOD Comparator; (12)Input Undervoltage Lockout and Thermal-Overload Protection; (13)48-Pin, 7mm x 7mm, Thin QFN Package.

Diagrams