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Analog Devices Inc./Maxim Integrated MAX17004ETJ+TG38
- Part No.:
- MAX17004ETJ+TG38
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
MAX17004ETJ+TG38.pdf
- Description:
- HIGH-EFFICIENCY, QUAD OUTPUT, MA
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
The MAX17004ETJ+TG38 from Maxim Integrated is a dual step-down, synchronous switch-mode power-supply (SMPS) controller designed for main 5V/3.3V generation in battery-powered systems. It features fixed-frequency current-mode control, 40/60 optimal interleaving, 200kHz/300kHz/500kHz selectable switching frequency, and integrated 5V/100mA LDO with bootstrap bypass up to 200mA - enabling high-efficiency, low-ripple power delivery in notebook computers and subnotebooks.
For engineers reviewing the MAX17004ETJ+TG38 datasheet, MAX17004ETJ+TG38 pinout, MAX17004ETJ+TG38 application, or MAX17004ETJ+TG38 equivalent, key selection considerations include its quad-output capability (3.3V, 5V, auxiliary LDO, and adjustable linear output), undervoltage/thermal fault protection, soft-start/soft-discharge sequencing, and support for lossless DCR current sensing in demanding portable power designs.
Technical Context
The MAX17004ETJ+TG38 implements two independent current-mode PWM controllers with 40°/60° phase shift to minimize input ripple across 6V–26V input range. Its interleaved architecture extends minimum operational input voltage to 8.3V before duty-cycle overlap - superior to conventional 180° out-of-phase regulators that degrade below 10V.
It integrates dual gate drivers (DH3/DL3 and DH5/DL5), internal 5V LDO with automatic bootstrap switchover, auxiliary linear-regulator driver (DRVA/FBA) supporting 1V–12V outputs, and Dual Mode™ feedback enabling fixed 3.3V/5V or adjustable 2.0V–5.5V regulation via FB3/FB5 pins - all coordinated through independent ON3/ON5 enables and PGDALL power-good signal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6V to 26V - supports 2–4 Li+ cell battery packs and wide-input industrial rails. |
| Switching Frequency | 200kHz / 300kHz / 500kHz (FSEL-selectable) - balances efficiency, size, and EMI in compact layouts. |
| Output Voltage Accuracy | ±0.75% at 2V reference - ensures tight regulation for sensitive core logic and memory supplies. |
| LDO5 Output | 4.85V to 5.10V @ 100mA - powers gate drivers and external keep-alive loads with low-noise stability. |
| Shutdown Current | 8μA typical - enables ultra-low-power standby in always-on system states. |
| Current-Sense Threshold | 50mV fixed or adjustable (0.5V–2.0V at ILIM) - supports precision peak-current limiting with resistor or DCR sensing. |
| Thermal Shutdown | +160°C with 15°C hysteresis - protects against sustained overload in thermally constrained notebooks. |
Pinout & Package
MAX17004ETJ+TG38 is housed in a 32-pin, 5mm × 5mm thin QFN package with exposed thermal pad (T3255-4). The package enables high-power density and efficient heat dissipation in space-constrained laptop mainboard applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ON3 / ON5 | Independent SMPS enable inputs | Enable/disable 3.3V or 5V regulator; connect to REF for delayed startup sequencing. |
| FB3 / FB5 | Feedback inputs | Set output voltage: fixed 3.3V/5V when tied to LDO5; adjustable 2.0V–5.5V when referenced to 2.0V REF. |
| CSH3/CSL3 & CSH5/CSL5 | Differential current-sense inputs | Support accurate shunt resistor or lossless inductor DCR sensing for overcurrent protection. |
| BST3/BST5 | Bootstrap capacitor terminals | Drive high-side MOSFET gates above LX rail; internal BST switches reduce external component count. |
| DRVA / FBA | Auxiliary LDO base driver & feedback | Control external PNP transistor to generate 1V–12V auxiliary supply with precise 1.00V regulation threshold. |
| PGDALL | Global power-good open-drain output | Asserts low on any fault (undervoltage, thermal, or - for MAX17003A only - overvoltage); requires pull-up. |
Key Features
| Feature | Design Value |
|---|---|
| 40/60 Optimal Interleaving | Reduces input capacitor RMS current by >30% vs. 180° interleaving, extending capacitor life and lowering EMI filter cost. |
| Internal 5V/100mA LDO + Bootstrap Bypass | Eliminates need for external bias supply; auto-bypass to 200mA during regulation reduces thermal stress on LDO. |
| Dual Mode™ Feedback | Single-pin configuration (FBx = LDO5 or REF) selects between factory-trimmed fixed outputs or user-adjustable range - simplifies BOM and layout. |
| Soft-Start & Soft-Discharge | Programmable 2ms ramp time prevents inrush current and negative voltage dips during power-up/down - critical for FPGA and DDR memory sequencing. |
| Low-Noise Pulse-Skipping (SKIP = REF) | Maintains >90% light-load efficiency while keeping switching frequency outside audible band (<20kHz) - eliminates coil whine in quiet environments. |
Applications
| Notebook Main Power Supply | Subnotebook Battery Management |
|---|---|
Use Scenario: Primary 3.3V/5V rail generation for CPU core, chipset, and peripheral interfaces in 12–15.6" notebooks. IC Role / Device Role / Timing Role: Dual-channel synchronous buck controller coordinating interleaved phase timing and global power-good signaling. Use Value: 40/60 interleaving cuts input ripple by 45% vs. conventional 180° designs, reducing bulk capacitor size and cost by 30%. |
Use Scenario: Compact, high-efficiency power solution for ultraportables with 2–4-cell Li+ batteries and aggressive thermal constraints. IC Role / Device Role / Timing Role: Quad-output PMIC delivering main rails plus auxiliary 12V/1V supplies using shared reference and sequenced enable logic. Use Value: Integrated 5V LDO with 200mA bootstrap mode eliminates discrete bias rail, saving 3 components and 8mm² PCB area. |
| PDA System Power Hub | Mobile Communicator Baseband Supply |
Use Scenario: Centralized power management in handheld PDAs requiring stable 3.3V I/O, 5V USB, and programmable auxiliary voltages. IC Role / Device Role / Timing Role: Configurable SMPS controller with independent ON3/ON5 enables and soft-discharge for safe hot-plug operation. Use Value: 8μA shutdown current extends battery runtime in sleep mode; DSCHG3/DSCHG5 pins actively discharge outputs to prevent backfeed. |
Use Scenario: Powering baseband processors and RF transceivers in mobile communicators where EMI and transient response are critical. IC Role / Device Role / Timing Role: High-bandwidth current-mode controller with <10µs fault propagation delay for overvoltage/undervoltage protection. Use Value: 500kHz max switching frequency enables use of 1.0µH inductors, cutting solution size by 40% vs. 200kHz designs without sacrificing load transient performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17003AETJ+ | Includes output overvoltage-fault protection; otherwise identical pinout, specs, and feature set. | Suitable for systems requiring OVP on 3.3V/5V rails (e.g., USB-C PD sink protection). | Select MAX17003AETJ+ when overvoltage fault detection is mandatory; MAX17004ETJ+TG38 suffices for undervoltage/thermal-only protection. |
| RT8205AZQW | Single-chip dual buck with integrated MOSFETs; lower quiescent current (3.5μA) but no auxiliary LDO driver or DCR sensing. | Better for cost-sensitive, low-power embedded systems without need for external PNP-based auxiliary supplies. | Choose RT8205AZQW for simplified design with integrated power stages; retain MAX17004ETJ+TG38 when flexibility in external FET selection and auxiliary rail generation is required. |
Compared with MAX17003AETJ+, the MAX17004ETJ+TG38 omits overvoltage protection but retains identical sequencing, efficiency, and thermal performance - making it ideal for cost-optimized notebook platforms where OVP is handled upstream. Versus RT8205AZQW, it trades integrated FETs for higher design flexibility, wider input range, and dedicated auxiliary LDO control.
Availability
MAX17004ETJ+TG38 is available at Aetrix Electronics and suitable for notebook computers, subnotebook power systems, and mobile communicator baseband supplies requiring stable component supply, long-term lifecycle support, and guaranteed lead-free compliance.
Supply support for MAX17004ETJ+TG38 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 leader in high-performance analog, mixed-signal, and power management ICs, serving computing, communications, and industrial markets with innovation in power efficiency and integration.
The MAX17003A/MAX17004A product line was engineered specifically for high-density, multi-rail power delivery in portable computing - emphasizing interleaved efficiency, robust fault coverage, and flexible sequencing to replace discrete power solutions in notebook mainboards.
FAQ
What is the primary function of the MAX17004ETJ+TG38 in a notebook power architecture?
The MAX17004ETJ+TG38 serves as the main dual-output synchronous buck controller generating regulated 3.3V and 5V rails from a 6V–26V input, such as a 2–4 cell Li+ battery. It coordinates interleaved switching, provides independent enable/control logic, delivers internal LDO bias, and supports auxiliary voltage generation - forming the core of the system's primary DC-DC conversion stage in notebook computers.
Does the MAX17004ETJ+TG38 support lossless current sensing, and how is it implemented?
Yes, the MAX17004ETJ+TG38 supports lossless inductor DCR current sensing via its differential CSH3/CSL3 and CSH5/CSL5 inputs. By connecting across a small series RC network placed in the inductor's return path, the controller measures voltage drop proportional to current without adding resistive losses - enabling high-efficiency peak-current limiting while preserving thermal performance in the MAX17004ETJ+TG38 design.
How does the 40/60 interleaving in the MAX17004ETJ+TG38 improve system-level performance compared to standard 180° interleaving?
The MAX17004ETJ+TG38's 40/60 interleaving reduces input capacitor RMS current by up to 45% versus 180° phase shift, directly lowering input ripple voltage and thermal stress on bulk capacitors. This allows smaller, lower-cost input caps and eases EMI filtering requirements - a measurable advantage confirmed in the MAX17004ETJ+TG38's typical operating characteristics showing reduced ripple down to 8.3V input before duty-cycle overlap occurs.
Can the MAX17004ETJ+TG38 generate an auxiliary 12V supply, and what external components are required?
Yes, the MAX17004ETJ+TG38 can generate a 12V auxiliary supply using its DRVA pin and external PNP transistor. Connect DRVA to the transistor base (with 680Ω base-emitter pullup), tie the emitter to VIN or main 5V rail, and route collector to 12V output. Feedback via FBA regulates output to 1.00V referenced to DRVA - requiring a resistor divider to scale 12V down to 1.00V at FBA. This configuration is fully supported in the MAX17004ETJ+TG38 datasheet Figure 1.
What fault protections are integrated into the MAX17004ETJ+TG38, and how are they signaled?
The MAX17004ETJ+TG38 integrates output undervoltage protection (UVP), thermal shutdown (+160°C), and global fault reporting via the open-drain PGDALL pin. UVP triggers at −10% of nominal output voltage with 10µs propagation delay; thermal shutdown includes 15°C hysteresis. PGDALL pulls low on any active fault and requires an external pull-up resistor - a behavior consistently documented across all MAX17004ETJ+TG38 electrical characteristics and functional descriptions.
MAX17004ETJ+TG38 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- Controller, Notebook Power System
- Voltage - Input:
- 6V ~ 26V
- Number of Outputs:
- 4
- Voltage - Output:
- 3.3V, 5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TQFN-EP (5x5)
MAX17004ETJ+TG38 FAQ
1.How can I place an order for MAX17004ETJ+TG38 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17004ETJ+TG38 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 MAX17004ETJ+TG38 reliable?
The price and inventory of MAX17004ETJ+TG38 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17004ETJ+TG38 is usually 5 days.
3.What payment methods are accepted for MAX17004ETJ+TG38?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17004ETJ+TG38 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17004ETJ+TG38?
MAX17004ETJ+TG38 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17004ETJ+TG38 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 MAX17004ETJ+TG38?
For technical support, including MAX17004ETJ+TG38 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17004ETJ+TG38 requirements.
6.How does Aetrix verify that MAX17004ETJ+TG38 is sourced from the original manufacturer or authorized distributors?
All MAX17004ETJ+TG38 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 MAX17004ETJ+TG38 meets industry standards.
7.What is the process for return or replacement of MAX17004ETJ+TG38?
All MAX17004ETJ+TG38 units undergo pre-shipment inspection (PSI). If there is an issue with MAX17004ETJ+TG38, 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 MAX17004ETJ+TG38 part is unused and in its original packaging.
Return procedure for MAX17004ETJ+TG38:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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