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Analog Devices Inc./Maxim Integrated MAX8795AGCJ/V+T
- Part No.:
- MAX8795AGCJ/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 32-LQFP
- Datasheet:
-
MAX8795AGCJ/V+T.pdf
- Description:
- IC REG CONV TFT LCD 8OUT 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,989
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Product details
Overview
The MAX8795AGCJ/V+T from Maxim Integrated is a TFT-LCD DC-DC power management IC integrating a 1.2MHz current-mode step-up regulator (VMAIN up to 18V), dual linear-regulator controllers (VGON/VGOFF), five rail-to-rail op-amps (±130mA, 45V/µs, 20MHz), and a logic-controlled high-voltage switch - all in a 32-pin LQFP package rated for -40°C to +105°C and AEC-Q200 automotive qualification. It powers source/gate drivers and VCOM/gamma strings in thin-film transistor displays.
For engineers reviewing the MAX8795AGCJ/V+T datasheet, MAX8795AGCJ/V+T pinout, MAX8795AGCJ/V+T application, or MAX8795AGCJ/V+T equivalent, key selection criteria include its integrated 20V/3A MOSFET, ±1% FB regulation accuracy, timer-delayed fault latch, thermal overload protection, and automotive-grade reliability across extended temperature operation.
Technical Context
The MAX8795AGCJ/V+T implements a current-mode boost architecture with internal 20V n-channel MOSFET (RLX(ON) ≤ 300mΩ), enabling ultra-small inductors and ceramic output capacitors. Its 1.2MHz switching frequency supports fast transient response to pulsed LCD loads while maintaining >85% efficiency at full load.
It integrates two independent linear-regulator controllers: FBP-based VGON (1.25V reference, ±1.5% load regulation error) and FBN-based VGOFF (1.0V reference, ±25mV load regulation error), each driving external charge-pump transistors. Five op-amps feature rail-to-rail I/O, 20MHz bandwidth, and ±75mA continuous output current per channel.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V (continuous); 5.5–6.0V limited to <1% lifetime duty per datasheet Note 2) |
| Step-Up Regulator Frequency | 1.2MHz nominal (900–1400kHz range); enables compact magnetics and low EMI |
| VMAIN Output Accuracy | ±1% over -40°C to +105°C (FB regulation voltage = 1.233V ±12mV) |
| Op-Amp Slew Rate | 45V/µs - supports fast gamma-correction settling and VCOM drive stability |
| Thermal Shutdown Hysteresis | +160°C trip, 15°C hysteresis - ensures robust operation in automotive cabin environments |
| Quiescent Current | 0.6–3.0mA (IIN, depending on operating state) - critical for battery-backed display subsystems |
| Automotive Qualification | AEC-Q200 Grade 3 (-40°C to +105°C); /V suffix confirms automotive qualification |
Pinout & Package
MAX8795AGCJ/V+T uses a 32-pin LQFP package (0.8mm pitch) with exposed paddle (EP) tied to AGND. Pin functions are validated per Maxim's official datasheet Rev 5 (19-0793).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SRC (Pin 1) | High-voltage p-channel MOSFET source | Switch input node for COM-SRC path; requires local 0.1µF bypass to PGND |
| REF (Pin 2) | Internal 1.25V reference bypass | Stabilizes precision reference; requires ≥0.22µF capacitor to AGND |
| AGND (Pin 3) | Analog ground for regulators | Must be connected under IC to PGND; separates noise-sensitive feedback paths |
| PGND (Pin 4) | Power ground for LX MOSFET | Primary return for boost inductor current; requires short/wide PCB trace to output caps |
| OUT1–OUT5 (Pins 5,8,13,17,20) | Op-amp outputs | Drive VCOM, gamma string segments, or panel bias rails; ±75mA continuous per channel |
| LX (Pin 21) | Boost switch node | Drain of internal 20V/3A n-MOSFET; connects to inductor and Schottky diode |
| FB / FBP / FBN (Pins 23–27) | Regulator feedback inputs | Set VMAIN (1.233V), VGON (1.25V), and VGOFF (1.0V) via external resistive dividers |
| DEL (Pin 29) | Switch delay timing node | Capacitor-connected to AGND sets startup delay for high-voltage gate driver sequencing |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 20V/3A n-channel MOSFET | Eliminates external high-side switch; reduces BOM count and layout area for VMAIN generation |
| Rail-to-rail op-amp I/O | Enables full-supply-range gamma correction and VCOM control without headroom loss |
| Timer-delayed fault latch | 200ms delay before shutdown on FB/FBP/FBN fault - prevents nuisance tripping during load transients |
| Logic-controlled HV switch (SRC/DRN/COM) | Two back-to-back p-MOSFETs enable bidirectional high-voltage sequencing for gate driver timing |
| 0.6mA quiescent current (no-switching) | Extends battery life in portable display systems during standby or low-brightness modes |
Applications
| Automotive Instrument Clusters | Notebook Display Power |
|---|---|
|
Use Scenario: Driving TFT LCDs in vehicle dashboards with wide ambient temperature swings and EMI-sensitive CAN bus proximity. IC Role / Device Role / Timing Role: Primary power manager generating VMAIN (14V), VGON (+25V), VGOFF (−10V), and VCOM bias for segmented instrument graphics. Use Value: AEC-Q200 qualification, −40°C to +105°C operation, and integrated fault latching ensure reliable startup and sustained operation in automotive environments. |
Use Scenario: Compact, high-efficiency power solution for 13.3″–15.6″ notebook LCD panels with tight board space constraints. IC Role / Device Role / Timing Role: Single-chip replacement for discrete boost + dual LDO + op-amp solutions; manages source/gate driver supplies and gamma calibration. Use Value: 1.2MHz switching allows use of 1.0×1.0mm inductors; 32-pin LQFP simplifies routing versus multi-chip alternatives. |
| Industrial Panel Meters | Medical Diagnostic Displays |
|
Use Scenario: Powering ruggedized TFT displays in factory-floor HMIs where long-term supply continuity and thermal stability are critical. IC Role / Device Role / Timing Role: Delivers regulated VMAIN, VGON, VGOFF, and precision VCOM using internal op-amps with 20MHz bandwidth for stable grayscale rendering. Use Value: Thermal shutdown hysteresis (15°C) and ±1% VMAIN regulation maintain display contrast consistency across 85°C ambient. |
Use Scenario: Supporting high-resolution diagnostic monitors requiring flicker-free, low-noise biasing for clinical image fidelity. IC Role / Device Role / Timing Role: Generates clean, low-ripple VCOM and gamma-reference voltages using rail-to-rail op-amps with 45V/µs slew rate. Use Value: 125dB open-loop gain and 60dB PSRR suppress supply noise coupling into grayscale-critical analog paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TFT-LCD power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8795AGTJ/V+ | Same functionality and specs, but in 32-pin TQFN (0.5mm pitch, 0.8mm max height) instead of LQFP | Better suited for ultra-thin displays where board height <1.0mm is required | Select MAX8795AGTJ/V+ when PCB real estate or Z-height is constrained; same automotive qualification and thermal performance |
| RTQ2136B-QA | Single-chip TFT PMIC with boost + dual LDO + 4 op-amps; lower op-amp slew rate (12V/µs), no DEL-controlled sequencing | Lacks adjustable high-voltage switch delay and has reduced op-amp bandwidth (10MHz vs. 20MHz) | Choose RTQ2136B-QA only if gamma string complexity is low and sequencing flexibility is not required |
Compared with MAX8795AGCJ/V+T, the MAX8795AGTJ/V+ offers identical electrical performance in a space-saving TQFN, while the RTQ2136B-QA trades sequencing control and op-amp speed for lower cost and smaller footprint - making MAX8795AGCJ/V+T optimal for high-fidelity, automotive-grade display systems demanding precise timing and wideband analog drive.
Availability
MAX8795AGCJ/V+T is available at Aetrix Electronics and suitable for automotive instrument clusters, notebook display power, and industrial panel meters requiring stable component supply with guaranteed AEC-Q200 compliance and extended-temperature support.
Supply support for MAX8795AGCJ/V+T 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
Maxim Integrated (now part of Analog Devices) designs high-performance analog and mixed-signal ICs for power management, sensing, and interface applications in automotive, industrial, and computing markets.
The MAX8795A product line delivers integrated TFT-LCD power solutions combining DC-DC conversion, linear regulation, and precision analog drive - specifically engineered for automotive and industrial displays demanding reliability, accuracy, and compact system integration.
FAQ
What does the "/V" suffix in MAX8795AGCJ/V+T signify?
The "/V" suffix in MAX8795AGCJ/V+T indicates AEC-Q200 automotive qualification, confirming that the device meets stress testing requirements for temperature cycling, vibration, and humidity exposure in automotive environments. This certification applies to the entire MAX8795AGCJ/V+T unit, including its 32-pin LQFP packaging and internal circuitry, and is documented in Maxim's official ordering information table.
Can MAX8795AGCJ/V+T drive gamma-correction resistor strings directly?
Yes, MAX8795AGCJ/V+T can drive gamma-correction resistor strings directly using its five integrated rail-to-rail op-amps, each capable of ±130mA short-circuit current and 45V/µs slew rate. The op-amps' 20MHz bandwidth and ±75mA continuous output current per channel support stable, low-distortion gamma voltage generation across full-panel brightness transitions.
What is the maximum allowable input voltage for MAX8795AGCJ/V+T?
The MAX8795AGCJ/V+T supports an input voltage range of 2.5V to 5.5V for continuous operation. Operation between 5.5V and 6.0V is permitted only for less than 1% of the IC's lifetime, as specified in datasheet Note 2. Exceeding 6.0V violates absolute maximum ratings and risks permanent damage.
How does the timer-delayed fault latch function in MAX8795AGCJ/V+T?
The timer-delayed fault latch in MAX8795AGCJ/V+T requires a sustained fault condition - such as FB, FBP below threshold or FBN above threshold - for 200ms before triggering shutdown. This prevents false trips during normal load transients, ensuring robust operation during panel power-up sequences and dynamic backlight modulation in the MAX8795AGCJ/V+T.
Is the exposed paddle (EP) on MAX8795AGCJ/V+T electrically connected internally?
Yes, the exposed paddle (EP) on MAX8795AGCJ/V+T is internally connected to AGND and must be soldered to a dedicated AGND copper pour on the PCB. It serves as a thermal and electrical ground path but cannot be used as the sole ground connection - AGND (Pin 3) and PGND (Pin 4) must also be properly routed per the datasheet layout guidelines.
MAX8795AGCJ/V+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Converter, TFT LCD
- Voltage - Input:
- 2.5V ~ 6V
- Number of Outputs:
- 8
- Voltage - Output:
- 2.5V ~ 18V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-LQFP (7x7)
MAX8795AGCJ/V+T FAQ
1.How can I place an order for MAX8795AGCJ/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8795AGCJ/V+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX8795AGCJ/V+T reliable?
The price and inventory of MAX8795AGCJ/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8795AGCJ/V+T is usually 5 days.
3.What payment methods are accepted for MAX8795AGCJ/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8795AGCJ/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8795AGCJ/V+T?
MAX8795AGCJ/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8795AGCJ/V+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX8795AGCJ/V+T?
For technical support, including MAX8795AGCJ/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8795AGCJ/V+T requirements.
6.How does Aetrix verify that MAX8795AGCJ/V+T is sourced from the original manufacturer or authorized distributors?
All MAX8795AGCJ/V+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX8795AGCJ/V+T meets industry standards.
7.What is the process for return or replacement of MAX8795AGCJ/V+T?
All MAX8795AGCJ/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8795AGCJ/V+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX8795AGCJ/V+T part is unused and in its original packaging.
Return procedure for MAX8795AGCJ/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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