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Analog Devices Inc./Maxim Integrated MAX1714AEEP-TG068
- Part No.:
- MAX1714AEEP-TG068
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Special Purpose Regulators
- Package:
- 20-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX1714AEEP-TG068.pdf
- Description:
- HIGH-SPEED STEP-DOWN CONTROLLER
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
MAX1714AEEP-TG068 from Maxim Integrated is a high-speed, constant-on-time PWM step-down controller designed for notebook CPU core and chipset/RAM supplies. It delivers 1% VOUT accuracy over line/load, supports 2V–28V battery input, provides 1V–5.5V adjustable or 2.5V/3.3V fixed output, and achieves 100ns load-step response using Quick-PWM™ architecture in a 20-pin QSOP package.
For engineers reviewing the MAX1714AEEP-TG068 datasheet, MAX1714AEEP-TG068 pinout, MAX1714AEEP-TG068 application, or MAX1714AEEP-TG068 equivalent, this page details its lossless current-limit sensing, overvoltage protection (OVP), 200/300/450/600kHz selectable switching frequency, and synchronous FET drive capability for high-efficiency low-voltage DC-DC conversion in space-constrained portable systems.
Technical Context
The MAX1714AEEP-TG068 implements Maxim's proprietary Quick-PWM™ control scheme-a pseudo-fixed-frequency, constant-on-time architecture with voltage feed-forward that uses output capacitor ESR as the current-sense element. It eliminates external current-sense resistors while maintaining stable operation across wide VIN/VOUT ratios (2V–28V input, 1V–5.5V output).
Its dual-gate drivers (DH and DL) support large synchronous rectifier MOSFETs, and integrated OVP (trip threshold +12.5% above regulation point) and undervoltage protection operate independently of feedback loop dynamics. The 1.7ms digital soft-start and power-good indicator (PGOOD) with ±6% trip hysteresis enable robust system-level power sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2V to 28V - supports direct battery stepping without pre-regulation, enabling highest efficiency in notebook main power rails. |
| Output Voltage Range | 1V to 5.5V adjustable, or 2.5V/3.3V fixed - covers CPU core, DRAM, and I/O supply requirements with single device. |
| VOUT Accuracy | ±1% over line, load, and temperature - ensures tight regulation for sensitive microprocessor cores without external trimming. |
| Switching Frequency | 200/300/450/600kHz (pin-selectable via TON) - allows EMI optimization and inductor size trade-offs without changing control loop compensation. |
| Load-Step Response | 100ns "instant-on" recovery - maintains <±30mV output deviation during CPU burst loads, critical for modern low-voltage logic. |
| Current-Limit Threshold | Adjustable 50mV–200mV (via ILIM pin) - enables precise, lossless overcurrent protection scalable to 4A–8A output designs. |
| OVP Threshold | +12.5% above regulation point (MAX1714A only) - fast fault propagation (<1.5µs delay) prevents damage to downstream logic during transient overvoltage events. |
Pinout & Package
MAX1714AEEP-TG068 is housed in a 20-pin QSOP (Quad Small Outline Package) with 0.65mm pitch, rated for -40°C to +85°C operation. Thermal performance is enhanced by internal AGND/PGND connection and exposed pad grounding (per standard layout guidelines).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DH | High-side gate driver output | Swings from LX to BST; drives N-channel high-side MOSFET with 1.5Ω typical on-resistance and 1A source/sink capability. |
| DL | Low-side gate driver output | Swings from PGND to VDD; drives synchronous rectifier with 0.5Ω pull-down / 1.5Ω pull-up on-resistance and 3A sink current. |
| FB | Feedback input | Connects to resistor divider from OUT; sets regulation point; supports fixed 2.5V/3.3V or adjustable 1V–5.5V outputs. |
| ILIM | Current-limit threshold control | Accepts 0.5V–2.0V analog input to set 50mV–200mV current-sense threshold-enables lossless, scalable overcurrent protection. |
| PGOOD | Power-good open-drain output | Asserts high-impedance when VOUT is within ±6% of target; used for system power sequencing and fault indication. |
| SHDN | Shutdown control input | Active-low logic input; pulls to AGND to disable controller and reduce quiescent current to <1µA per supply rail. |
| TON | On-time selection input | Four-level strap (AGND/REF/VCC/floating) selects 600/450/300/200kHz switching frequency-no external clock required. |
| REF | 2.0V reference output | Stable 2.0V ±1% output; supplies 50µA max; used for FB divider bias or ILIM scaling-reduces need for external references. |
Key Features
| Feature | Design Value |
|---|---|
| No current-sense resistor | Uses output capacitor ESR for current sensing-eliminates 0.5W+ conduction loss and PCB area for sense resistor + filter network. |
| Quick-PWM™ architecture | 100ns load-step response with near-constant frequency-avoids audible noise and EMI spread while preserving inductor operating point. |
| Overvoltage protection (OVP) | Dedicated comparator with 12.5% trip threshold and <1.5µs propagation delay-protects 1V-core logic from catastrophic overvoltage events. |
| Synchronous FET drive | DH/DL drivers rated for >4A peak currents and optimized dead-time (26–35ns)-enables use of low-RDS(on) MOSFETs for >90% efficiency at 4A. |
| Digital soft-start | 1.7ms monotonic ramp-prevents inrush current, avoids output overshoot, and ensures clean power-up of multi-rail systems. |
Applications
| CPU Core Supply | Chipset/RAM Supply |
|---|---|
|
Use Scenario: Powers Intel/AMD mobile processor cores requiring tightly regulated 1.0V–1.35V at up to 8A with rapid dynamic voltage scaling. IC Role / Device Role / Timing Role: Primary buck controller managing VCC rail; regulates output via FB divider; synchronizes DH/DL timing to maintain continuous conduction mode. Use Value: 1% VOUT accuracy and 100ns transient response prevent CPU throttling or reset during burst workloads; OVP safeguards against VRM failure-induced overvoltage. |
Use Scenario: Generates 1.8V or 2.5V supply for northbridge, southbridge, and DDR SDRAM in ultra-thin notebooks. IC Role / Device Role / Timing Role: Secondary buck controller; uses fixed 2.5V output mode (FB tied to VCC); TON strapped for 300kHz to balance efficiency and component size. Use Value: Eliminates current-sense resistor loss-critical for thermally constrained chipset areas; PGOOD signal coordinates memory initialization sequence. |
| I/O Voltage Rail | Battery-Step-Down System Supply |
|
Use Scenario: Delivers 3.3V I/O supply to USB controllers, PCIe switches, and display interfaces from shared battery bus. IC Role / Device Role / Timing Role: Fixed-output buck controller (FB tied to VCC); SKIP pin enabled for pulse-skipping at light load to extend battery life. Use Value: 200kHz–600kHz frequency selection minimizes EMI in noise-sensitive RF zones; 1.7ms soft-start prevents brownout during hot-plug events. |
Use Scenario: Directly steps down 7V–24V Li-ion battery pack to 1.6V–2.5V system rails in fanless ultrabooks. IC Role / Device Role / Timing Role: High-efficiency primary converter; V+ pin senses battery directly; synchronous rectification maximizes energy extraction. Use Value: Single-stage buck topology achieves >92% peak efficiency-reducing thermal load and extending runtime vs. two-stage alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1714BEEE | 16-pin QSOP, no overvoltage protection, missing AGND/PGND separation, no OVP latch | Suitable only for non-critical I/O rails where OVP is handled externally or unnecessary | Select MAX1714BEEE only if board space is constrained and OVP is redundant; MAX1714AEEP-TG068 remains preferred for CPU/core rails. |
| ISL6226CRZ | Fixed 300kHz frequency, no TON strapping, requires external current-sense resistor, no integrated REF | Lacks Quick-PWM™ speed and lossless sensing-lower efficiency and slower transient response than MAX1714AEEP-TG068 | Choose ISL6226CRZ only if legacy design reuse mandates identical pinout and frequency; MAX1714AEEP-TG068 offers superior efficiency and integration. |
Compared with MAX1714BEEE and ISL6226CRZ, MAX1714AEEP-TG068 uniquely combines lossless current limiting, programmable frequency, on-chip 2.0V reference, and dedicated OVP-making it the only option qualified for high-reliability CPU core regulation in modern notebooks.
Availability
MAX1714AEEP-TG068 is available at Aetrix Electronics and suitable for notebook computer power management, CPU core supply design, and chipset/RAM voltage regulation requiring stable component supply across extended production lifecycles.
Supply support for MAX1714AEEP-TG068 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 high-performance analog, mixed-signal, and power management ICs for portable, industrial, and communications systems.
The MAX1714 product line was engineered specifically for high-efficiency, fast-transient notebook CPU and chipset power supplies-emphasizing lossless sensing, compact footprint, and robust fault protection in thermally limited environments.
FAQ
What is the maximum supported output current for MAX1714AEEP-TG068?
MAX1714AEEP-TG068 itself does not define a hard current limit-it is a controller IC whose output current capability depends on external MOSFET selection, inductor rating, and thermal design. Reference designs achieve 4A–8A continuous output using appropriate synchronous FETs (e.g., IRF7301, FDS6982A) and 6.8µH–1.5µH inductors. The ILIM pin supports current-limit thresholds from 50mV to 200mV, scalable to match system-level protection requirements.
Does MAX1714AEEP-TG068 require an external 5V bias supply?
Yes, MAX1714AEEP-TG068 requires an external +4.5V to +5.5V bias supply for VCC (analog circuitry) and VDD (low-side gate driver). This is typically sourced from the notebook's existing 5V system rail. The bias supply must deliver 5mA–30mA depending on switching frequency and MOSFET gate charge. No internal LDO is provided-this external bias improves efficiency and avoids thermal overhead.
How does the Quick-PWM™ architecture in MAX1714AEEP-TG068 differ from standard current-mode PWM?
Unlike traditional current-mode PWMs that rely on fixed-frequency clocks and external current-sense resistors, MAX1714AEEP-TG068 uses a constant-on-time, voltage-feed-forward architecture that derives timing from V+ and VOUT. It eliminates the current-sense resistor and achieves 100ns load-step response by directly sensing inductor current via output capacitor ESR-avoiding propagation delays inherent in discrete sense paths.
Can MAX1714AEEP-TG068 be used in non-notebook applications?
Yes-while optimized for notebook CPU/core supplies, MAX1714AEEP-TG068 is applicable to any 1V–5.5V, high-efficiency, fast-transient DC-DC application with 2V–28V input, including industrial FPGA power, telecom line cards, and test equipment. Its wide input range, OVP, and synchronous drive make it suitable for battery-powered or adapter-fed systems where reliability and efficiency are critical.
What is the purpose of the SKIP pin on MAX1714AEEP-TG068?
The SKIP pin on MAX1714AEEP-TG068 enables automatic switchover between forced-PWM and pulse-skipping (PFM) modes. When pulled to AGND, it activates zero-crossing detection to truncate low-side conduction at inductor current zero-reducing switching losses at light loads and improving light-load efficiency. When tied to VCC, it forces continuous PWM operation for lowest output ripple and predictable EMI profile.
MAX1714AEEP-TG068 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Quick-PWM™
- Package/Case:
- 20-SSOP (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- Controller, Notebook Power System
- Voltage - Input:
- 2V ~ 5.5V, 4.5V ~ 28V
- Number of Outputs:
- 1
- Voltage - Output:
- 1V ~ 2.5V, 3.3V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QSOP
MAX1714AEEP-TG068 FAQ
1.How can I place an order for MAX1714AEEP-TG068 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1714AEEP-TG068 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 MAX1714AEEP-TG068 reliable?
The price and inventory of MAX1714AEEP-TG068 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1714AEEP-TG068 is usually 5 days.
3.What payment methods are accepted for MAX1714AEEP-TG068?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1714AEEP-TG068 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1714AEEP-TG068?
MAX1714AEEP-TG068 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1714AEEP-TG068 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 MAX1714AEEP-TG068?
For technical support, including MAX1714AEEP-TG068 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1714AEEP-TG068 requirements.
6.How does Aetrix verify that MAX1714AEEP-TG068 is sourced from the original manufacturer or authorized distributors?
All MAX1714AEEP-TG068 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 MAX1714AEEP-TG068 meets industry standards.
7.What is the process for return or replacement of MAX1714AEEP-TG068?
All MAX1714AEEP-TG068 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1714AEEP-TG068, 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 MAX1714AEEP-TG068 part is unused and in its original packaging.
Return procedure for MAX1714AEEP-TG068:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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