Analog Devices Inc./Maxim Integrated MAX17075ETG+

Overview

The MAX17075ETG+ from Analog Devices is a highly integrated TFT-LCD power management IC featuring a 1.2MHz current-mode boost regulator (VIN=2.5–5.5V → VAVDD up to 18V), dual regulated charge pumps (VGON/VGOFF), a high-current ±500mA rail-to-rail op amp for VCOM buffering, and logic-controlled high-voltage gate-driver switches. It delivers fast transient response, 87% efficiency at 5V→13V, and operates across –40°C to +85°C in ultra-thin LCD panel power systems.

For engineers reviewing the MAX17075ETG+ datasheet, MAX17075ETG+ pinout, MAX17075ETG+ application, or MAX17075ETG+ equivalent, this device serves as a complete single-chip solution for notebook display, monitor, and LCD TV power rails-requiring precise VCOM drive, gate-on/off voltage regulation, and synchronized high-voltage switching control without external MOSFETs or discrete op amps.

Technical Context

The MAX17075ETG+ integrates four functionally distinct power domains: a fixed-frequency current-mode boost controller with built-in 0.16Ω n-channel MOSFET and 7-bit digital soft-start; two independent regulated charge pumps (positive and negative) each with adjustable output via resistive dividers and fault-latched UVLO protection; a high-slew-rate (45V/μs), wide-bandwidth (20MHz) op amp optimized for VCOM drive with ±500mA short-circuit capability; and a programmable high-voltage switch block (SRC/DRN/COM/CTL/DEL) supporting configurable gate timing with delay-adjustable turn-on/turn-off sequencing.

All regulators employ internal 1.25V reference-based feedback (FB/FBP/FBN), cycle-by-cycle current limiting, and timer-delayed fault latching (≈50ms). The device enforces strict power-up sequencing-REF must exceed 1.17V before other outputs activate-and includes thermal overload protection, overvoltage shutdown (VSUP >21V), and rail-to-rail input/output operation across its analog sections.

Key Specifications

Pinout & Package

The MAX17075ETG+ is housed in a 24-pin thin quad flat no-lead (TQFN-EP) package with exposed pad (EP), measuring 4mm × 4mm and 0.8mm maximum thickness. The exposed pad must be soldered to AGND for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar TFT-LCD power management applications.

Compared with MAX17075ETG+, the MAX17076ETG+ offers identical functionality with extended temperature range and automotive qualification, while the TPS65150RGER provides lower-cost integration but omits critical gate-switch timing control and has reduced VCOM drive strength.

Availability

The MAX17075ETG+ is available at Aetrix Electronics and suitable for notebook computer displays, LCD monitor panels, and LCD TVs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX17075ETG+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and power management markets since 1965.

The MAX17075ETG+ belongs to Analog Devices' TFT-LCD PMIC product line, engineered specifically to consolidate boost, gate bias, VCOM drive, and high-voltage switching functions into one die for space- and efficiency-critical display subsystems.

FAQ

What is the maximum output voltage the MAX17075ETG+ boost regulator can generate?

The MAX17075ETG+ boost regulator supports an output voltage range up to 18V, set via external resistive divider on the FB pin. This allows generation of standard TFT-LCD source driver supplies such as +13V (AVDD) from 2.5V–5.5V inputs. The internal 0.16Ω MOSFET and current-mode control maintain regulation accuracy within ±1% across load and line variations.

Does the MAX17075ETG+ include protection features for the VCOM op amp?

Yes, the MAX17075ETG+ VCOM op amp includes robust protection: ±500mA short-circuit current capability, rail-to-rail output swing, and thermal shutdown that disables all outputs if junction temperature exceeds +150°C. Additionally, the SUP supply has undervoltage lockout (3.8V–4.2V threshold) to prevent op amp malfunction during brown-out conditions.

How is the gate-on and gate-off voltage adjusted on the MAX17075ETG+?

The MAX17075ETG+ uses external resistive dividers to adjust VGON and VGOFF: FBP connects to the midpoint of a divider from VGON to AGND, and FBN connects to the midpoint of a divider from VGOFF to REF. The internal 1.25V reference ensures precise regulation-e.g., a 100kΩ/13.7kΩ divider on FBP yields ~+30V VGON with ±1.5% tolerance over temperature.

What is the purpose of the DEL pin on the MAX17075ETG+?

The DEL pin on the MAX17075ETG+ sets the turn-on delay for the high-voltage switch block (SRC/DRN/COM). A capacitor from DEL to AGND programs the delay time-typically 100nF yields ~10µs delay-ensuring proper sequencing between gate-on and gate-off signals to prevent shoot-through in TFT gate drivers. The internal 5µA charge current and 1.25V threshold provide predictable timing.

Can the MAX17075ETG+ operate with a 3.3V input supply?

Yes, the MAX17075ETG+ fully supports 3.3V input operation within its specified 2.5V–5.5V VCC range. At 3.3V input, it delivers >85% efficiency to 13V AVDD at 300mA load and maintains all functional blocks-including the 45V/μs VCOM op amp and regulated charge pumps-across the full –40°C to +85°C temperature range.