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Analog Devices Inc./Maxim Integrated MAX17061ETI+TG104
- Part No.:
- MAX17061ETI+TG104
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- LED Drivers
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
MAX17061ETI+TG104.pdf
- Description:
- IC LED DRV RGLTR PWM 30MA 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,693
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Product details
Overview
MAX17061ETI+TG104 from Maxim Integrated is an 8-string white LED driver IC for large LCD panel backlighting, featuring integrated 45V/150mΩ MOSFET, SMBus™-programmable dimming with 8-bit resolution, ±1.5% inter-string current matching, and selectable 500kHz/750kHz/1MHz switching frequency. It operates from 4.5V to 26V input and delivers 15–30mA per string (adjustable) or fixed 25mA.
For engineers reviewing the MAX17061ETI+TG104 datasheet, MAX17061ETI+TG104 pinout, MAX17061ETI+TG104 application, or MAX17061ETI+TG104 equivalent, key selection criteria include FB_ feedback voltage tolerance (625mV typ at 25mA), DPWM frequency programmability via FSET resistor, open/short LED fault detection timing (2ms blanking), thermal shutdown threshold (160°C), and SMBus timing compliance (10–100kHz).
Technical Context
The MAX17061ETI+TG104 implements a fixed-frequency, current-mode boost controller with internal 45V MOSFET and eight independent current-sink regulators. Its control architecture uses the lowest active FB_ voltage to regulate VOUT, integrating error at CCV with slope-compensated current sensing for stable peak-inductor current control across load and input variations.
Dimming is implemented via dual-path DPWM generation: externally applied PWM signal (PWMI) is filtered (PWMO output), digitized, and combined with 8-bit SMBus brightness commands; DPWM frequency is resistor-programmed on FSET (197Hz–1.4kHz range), while oscillator frequency (500kHz/750kHz/1MHz) is set via tri-level OSC pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 26V - supports wide-range DC supplies including 5V, 12V, and 19V notebook rails without external LDO. |
| LED String Count | Up to 8 parallel strings - enables scalable backlight designs for 10.1" to 15.6" LCD panels with uniform brightness. |
| Full-Scale Current | 15mA to 30mA (adjustable via ISET resistor) or 25mA (fixed) - sets per-string drive level with <±1.5% matching between strings. |
| FB_ Regulation Voltage | 625mV typical at 25mA - low sense voltage minimizes power loss in current-setting resistors and improves efficiency. |
| Switching Frequency | Selectable: 500kHz / 750kHz / 1MHz via OSC pin - allows trade-off between inductor size (smaller at 1MHz) and conversion efficiency. |
| DPWM Resolution | 8-bit (0–255) - provides fine-grained brightness control compatible with Intel DPST for battery life optimization. |
| Thermal Shutdown | 160°C junction temperature - protects against sustained overload or poor PCB thermal design without latch-off. |
Pinout & Package
MAX17061ETI+TG104 is housed in a thermally enhanced 28-pin, 4mm × 4mm Thin QFN package with exposed pad (EP) for PCB ground connection. Pin count and layout match the MAX17061 family standard footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB1–FB8 | LED string cathode current-sink outputs | Each sinks up to 30mA; internal regulation ensures ±1.5% current matching; unused strings must be tied to VCC. |
| LX1, LX2 | Internal MOSFET drain nodes | Must be shorted externally; connect to boost inductor and Schottky diode; rated for 45V max, 1.6A peak current. |
| ISET | Full-scale LED current programming | Resistor from ISET to GND sets current: 133kΩ → 30mA, 200kΩ → 20mA, 266kΩ → 15mA; tie to VCC for 25mA default. |
| FSET | DPWM oscillator frequency setting | Resistor to GND programs DPWM frequency: 464kΩ → 200Hz, 113kΩ → 785Hz, 65kΩ → 1.335kHz - enables precise dimming timing. |
| OSC | Boost converter oscillator frequency select | Tri-level input: GND = 500kHz, float = 750kHz, VCC = 1MHz - determines switching loss vs. component size trade-off. |
| SDA, SCL | SMBus 2-wire interface | Supports 10–100kHz clock; enables register read/write for brightness, fault status, and configuration without PWM hardware. |
| PWMI, PWMO | PWM dimming input and filtered output | PWMI accepts 5–100kHz external PWM; PWMO provides analog-filtered duty-cycle representation for diagnostics or analog dimming fallback. |
| OV | Output overvoltage sense | Connects to resistive divider from VOUT; trips at 1.236V threshold to limit VOUT to safe level (e.g., ≤45V) during open-string faults. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 45V/150mΩ MOSFET | Eliminates external high-voltage switch, reduces BOM count, and saves >25mm² PCB area versus discrete boost solutions. |
| ±1.5% inter-string current regulation | Ensures uniform luminance across all 8 LED strings without external calibration, critical for high-end display quality. |
| Open/short LED fault detection | Identifies failed strings within 2ms and disables only affected FB_ outputs; remaining strings continue operation at full brightness. |
| Low 625mV FB_ sense voltage | Reduces power dissipation in current-setting resistors by ~60% vs. 1V reference, improving thermal margin and efficiency. |
| SMBus + PWM dual-dimming interface | Enables software-controlled brightness (SMBus) and hardware-triggered dimming (PWMI) simultaneously, with multiplicative dimming law. |
Applications
| Notebook LCD Backlight | Tablet Display Power |
|---|---|
|
Use Scenario: Driving 8×10-series white LED array in 13.3" notebook display with dynamic brightness scaling. IC Role / Device Role / Timing Role: Primary WLED current controller and boost regulator; manages VOUT headroom, string current matching, and DPWM dimming synchronized to GPU frame rate. Use Value: Delivers consistent edge-to-edge brightness at 25mA/string while supporting Intel DPST for >20% battery runtime extension under variable content. |
Use Scenario: Backlight solution for 10.1" tablet with limited board space and thermal constraints. IC Role / Device Role / Timing Role: Single-chip LED driver with integrated MOSFET and SMBus interface; replaces multi-chip discrete boost + current sink designs. Use Value: Reduces component count by 7 parts and PCB area by 35mm²; thermal shutdown (160°C) prevents overheating in sealed enclosure. |
| Subnotebook Display System | Industrial Panel PC Backlight |
|
Use Scenario: Ultra-thin subnotebook requiring minimal height profile and low quiescent current. IC Role / Device Role / Timing Role: High-efficiency step-up controller with pulse-skipping at light load; regulates 4–6 LED strings at 20mA with 500kHz switching. Use Value: Achieves 89% efficiency at 7V input/12V output; shutdown current <10µA extends standby time without compromising startup speed. |
Use Scenario: Ruggedized industrial display operating in -40°C to +85°C ambient with ESD-prone environment. IC Role / Device Role / Timing Role: Fault-tolerant LED driver with open/short detection, OV protection, and robust SMBus communication (10–100kHz). Use Value: Maintains backlight operation during single-string failure; SMBus register access enables remote fault logging and predictive maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17060ETI+ | 7-string version; identical pinout, SMBus interface, and 500kHz/750kHz/1MHz frequency selection but lacks FB8 and associated circuitry. | Not suitable for 8-string designs; requires redesign of LED array and PCB layout if upgrading from MAX17060. | Select MAX17060ETI+ only when driving ≤7 LED strings and board space is constrained - same thermal QFN package and feature set otherwise. |
| LM3409QMH/NOPB | External MOSFET controller; no integrated switch; requires external high-side N-channel driver and sense resistor; supports up to 6 strings. | Demands additional components (MOSFET, gate driver, current sense) and increases layout complexity; lacks SMBus interface and built-in fault reporting. | Choose LM3409QMH/NOPB for high-reliability automotive applications where external MOSFET selection enables AEC-Q101 qualification - not drop-in compatible. |
Compared with MAX17060ETI+, MAX17061ETI+TG104 adds eighth string support without changing package or thermal performance; compared with LM3409QMH/NOPB, it integrates power switch and digital interface but trades off external MOSFET flexibility for compactness and faster time-to-market.
Availability
MAX17061ETI+TG104 is available at Aetrix Electronics and suitable for notebook backlighting, tablet display systems, and industrial panel PC applications requiring stable component supply, long-term lifecycle support, and guaranteed lead-free compliance.
Supply support for MAX17061ETI+TG104 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) is a semiconductor company specializing in precision analog, mixed-signal, and power management ICs for computing, consumer, and industrial markets.
The MAX17061 belongs to Maxim's high-efficiency LED driver product line, designed specifically for thin, energy-conscious LCD backlight systems in portable computing devices with stringent EMI and thermal requirements.
FAQ
What is the maximum number of LEDs per string supported by the MAX17061ETI+TG104?
The MAX17061ETI+TG104 supports up to 10 series-connected LEDs per string. This is determined by its 45V maximum LX rating and internal current regulation architecture, which maintains ±1.5% matching across all 8 strings even at full 10-LED configuration under 26V input.
How does the MAX17061ETI+TG104 handle LED open-circuit faults?
The MAX17061ETI+TG104 continuously monitors each FB_ pin voltage; if any FB_ drops below 175mV (typical), it detects an open string and disables only that current sink while allowing remaining strings to operate normally. The fault is latched and reported via SMBus status register.
Can the MAX17061ETI+TG104 operate with an input voltage below 5.5V?
Yes - when VIN ≤ 5.5V, the internal 5V LDO is disabled by tying VCC to IN and supplying external 5V to VCC. This configuration avoids LDO dropout and reduces power loss; the MAX17061ETI+TG104 retains full functionality including SMBus, PWM dimming, and fault protection.
What is the purpose of the PWMO pin on the MAX17061ETI+TG104?
The PWMO pin on the MAX17061ETI+TG104 outputs a filtered analog voltage proportional to the duty cycle of the PWMI input signal. Used with an external capacitor to GND, it forms a low-pass filter (with internal 40kΩ resistor) enabling analog brightness monitoring or fallback dimming when SMBus is unavailable.
Does the MAX17061ETI+TG104 support Intel Display Power Saving Technology (DPST)?
Yes - the MAX17061ETI+TG104 natively supports Intel DPST through its DPWM architecture: the SMBus brightness command and external PWMI signal are multiplied to generate the final DPWM duty cycle, enabling coordinated power reduction with GPU activity while maintaining 8-bit dimming resolution.
MAX17061ETI+TG104 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 8
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 26V
- Voltage - Output:
- 5V
- Current - Output / Channel:
- 30mA
- Frequency:
- 1MHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TQFN (4x4)
MAX17061ETI+TG104 FAQ
1.How can I place an order for MAX17061ETI+TG104 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17061ETI+TG104 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 MAX17061ETI+TG104 reliable?
The price and inventory of MAX17061ETI+TG104 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17061ETI+TG104 is usually 5 days.
3.What payment methods are accepted for MAX17061ETI+TG104?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17061ETI+TG104 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17061ETI+TG104?
MAX17061ETI+TG104 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17061ETI+TG104 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 MAX17061ETI+TG104?
For technical support, including MAX17061ETI+TG104 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17061ETI+TG104 requirements.
6.How does Aetrix verify that MAX17061ETI+TG104 is sourced from the original manufacturer or authorized distributors?
All MAX17061ETI+TG104 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 MAX17061ETI+TG104 meets industry standards.
7.What is the process for return or replacement of MAX17061ETI+TG104?
All MAX17061ETI+TG104 units undergo pre-shipment inspection (PSI). If there is an issue with MAX17061ETI+TG104, 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 MAX17061ETI+TG104 part is unused and in its original packaging.
Return procedure for MAX17061ETI+TG104:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX17061ETI+TG104 Tags
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