My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8702ETP
- Part No.:
- MAX8702ETP
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Gate Drivers
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
MAX8702ETP.pdf
- Description:
- MAX8702 DUAL-PHASE MOSFET DRIVER
- Quantity:
- Payment:
- Shipping:
Inventory:402
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX8702ETP from Maxim Integrated is a dual-phase noninverting MOSFET driver IC designed for CPU core multiphase buck regulators in notebook systems. It integrates a resistor-programmable temperature sensor, delivers 5A typical low-side sink current, features 0.35Ω typical DL on-resistance, and operates across 4.5V–28V input range - enabling direct battery-to-core voltage conversion in 2–4-cell Li+ systems.
For engineers reviewing the MAX8702ETP datasheet, MAX8702ETP pinout, MAX8702ETP application, or MAX8702ETP equivalent, this page provides verified technical context, real-world timing behavior (19ns DH/DL propagation delay), adaptive dead-time control logic, thermal trip configuration via TSET, and validated alternative options for multiphase gate-driver selection.
Technical Context
The MAX8702ETP implements two independent high-side (DH1/DH2) and low-side (DL1/DL2) gate drivers with adaptive dead-time control per phase to prevent shoot-through. Each channel includes zero-crossing comparators tied to LX/PGND for pulse-skipping mode activation when SKIP = AGND.
It integrates a die-temperature sensor with open-drain DRHOT output, programmable via external resistor at TSET pin (trip range up to +160°C, 10°C hysteresis). UVLO triggers at 3.85V (typ) on VCC, and shutdown (SHDN = SKIP = AGND) reduces quiescent current to 2µA while forcing DH low and DL high.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 28V - supports direct battery input (7V–20V typical) without pre-regulation |
| Propagation Delay | 19ns (PWM→DL), 23ns (PWM→DH) - enables high-frequency operation up to 1.2MHz |
| DL On-Resistance | 0.35Ω (typ) - ensures fast turn-off of large synchronous-rectifier MOSFETs under high dV/dt |
| Drive Current | 5A (DL sink), 1.5A (DH source/sink) - drives 3nF gate loads with 8ns rise/fall times |
| Temperature Sensing | Resistor-programmable trip point (up to +160°C), 10°C hysteresis - enables system-level thermal management |
| Shutdown Current | 2µA (typ) - maintains ultra-low power state during system sleep or suspend |
| Package | 20-pin thin QFN, 4mm × 4mm - thermally enhanced layout with exposed pad tied to AGND |
Pinout & Package
MAX8702ETP uses a 20-pin thermally enhanced thin QFN package (4mm × 4mm) with exposed paddle connected to AGND for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PWM1 / PWM2 | Phase 1/2 PWM logic inputs | TTL/CMOS-compatible; control DH high/low and DL complement states per phase |
| DH1 / DH2 | High-side gate outputs | Bootstrap-referenced (BSTx–LXx); swing between LXx and BSTx to drive high-side N-MOSFET gates |
| DL1 / DL2 | Low-side gate outputs | Ground-referenced (PGNDx–VDD); 0.35Ω pulldown ensures robust turn-off under capacitive coupling |
| LX1 / LX2 | Switch-node connections | Return path for DH drivers; input to zero-crossing comparators for pulse-skipping mode |
| TSET | Temperature set-point input | Connects external 1% resistor to AGND; sets thermal trip point via RTSET = 85,210/T − 745,200/T² − 195 (T in K) |
| DRHOT | Open-drain hot-indicator output | Pulled low when die temperature exceeds programmed threshold; requires external pull-up |
| SHDN / SKIP | Control logic inputs | SHDN + SKIP low → shutdown (2µA IQ); SKIP low alone → pulse-skipping PFM mode |
Key Features
| Feature | Design Value |
|---|---|
| Dual-phase adaptive dead-time control | Prevents shoot-through by dynamically adjusting DH/DL overlap based on actual gate transitions |
| Resistor-programmable thermal sensing | Enables precise system-level thermal response without external ICs or firmware intervention |
| Pulse-skipping mode with zero-crossing detection | Improves light-load efficiency by truncating DL on-time at inductor current zero-crossing |
| Robust low-side driver (0.35Ω RDL_LOW) | Suppresses false turn-on caused by LX node dV/dt coupling into DL trace parasitics |
| UVLO with hysteresis (85mV) | Ensures clean power-on sequencing and prevents erratic operation during brownout conditions |
Applications
| Mobile CPU Core Regulation | Notebook Battery-to-Core Conversion |
|---|---|
Use Scenario: Regulating 0.85V–1.5V CPU core voltage from 7V–20V AC adapter or 2–4-cell Li+ battery input in ultraportable notebooks. IC Role / Device Role / Timing Role: Dual-phase gate driver synchronizing high-side and low-side MOSFETs; provides adaptive dead-time and pulse-skipping for dynamic load steps. Use Value: Enables single-stage conversion with >90% efficiency at full load and >85% at 10% load via PFM mode - reducing heat and extending battery runtime. | Use Scenario: Direct step-down from battery voltage to processor core supply in fanless or thermally constrained designs. IC Role / Device Role / Timing Role: Gate driver with integrated temperature monitoring; DRHOT signals thermal events before throttling occurs. Use Value: Eliminates need for discrete thermal sensor and comparator; allows early thermal mitigation using same die temperature reading as internal thermal shutdown. |
| Server VRM Auxiliary Stage | Multiphase Point-of-Load Supply |
Use Scenario: Secondary regulation stage in dual-stage server VRMs where primary converter outputs ~5V or 12V. IC Role / Device Role / Timing Role: High-frequency dual-phase driver operating at 600kHz–1.2MHz; leverages fast 19ns propagation for tight transient response. Use Value: Reduces output capacitor count vs. single-phase solutions; supports 40A+ total output with interleaved ripple cancellation. | Use Scenario: High-current POL supply for FPGAs, ASICs, or GPU memory in embedded industrial systems. IC Role / Device Role / Timing Role: Gate driver with shutdown control (SHDN/SKIP) and robust 5A DL sink for driving paralleled low-side MOSFETs. Use Value: Supports rapid enable/disable sequencing and graceful power-down without shoot-through risk during state transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-phase MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8703ETP | No integrated temperature sensor or TSET/DRHOT pins; otherwise identical pinout, timing, and drive specs | Used where thermal monitoring is handled externally or not required | Select MAX8703ETP when DRHOT signaling and resistor-programmed trip point are unnecessary - reduces BOM count and layout complexity |
| ISL6208CRZ | Single-phase driver; no integrated temperature sensor; 3.3V–28V VDD range; 25ns propagation delay | Requires two ISL6208CRZ for dual-phase operation; lacks pulse-skipping zero-crossing comparator | Choose ISL6208CRZ only for cost-sensitive, lower-current applications where dual-phase interleaving is not needed |
Compared with MAX8703ETP, the MAX8702ETP adds thermal awareness without sacrificing drive strength or timing precision; versus ISL6208CRZ, it delivers true dual-phase integration, adaptive dead-time, and system-level thermal signaling in one 20-pin QFN - reducing component count and PCB area in space-constrained CPU power designs.
Availability
MAX8702ETP is available at Aetrix Electronics and suitable for notebook CPU core supplies, multiphase high-current power supplies, and server/workstation VRM applications requiring stable component supply and long-term lifecycle support.
Supply support for MAX8702ETP 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 precision analog, mixed-signal, and power-management ICs for computing, communications, and industrial applications.
The MAX8702ETP belongs to Maxim's high-efficiency multiphase gate-driver product line, engineered specifically for notebook and mobile CPU core power delivery with integrated thermal intelligence and adaptive timing control.
FAQ
What is the function of the TSET pin on the MAX8702ETP?
The TSET pin on the MAX8702ETP accepts an external resistor connected to AGND to program the thermal trip point of the integrated temperature sensor. Using the formula RTSET = (85,210 / T) − (745,200 / T²) − 195 (with T in Kelvin), designers can set the DRHOT assertion threshold from approximately +85°C to +160°C. This resistor must be 1% tolerance for accurate calibration, and the MAX8702ETP applies 10°C hysteresis to prevent output oscillation near the trip point.
How does the MAX8702ETP prevent shoot-through in high-frequency operation?
The MAX8702ETP prevents shoot-through using per-channel adaptive dead-time control that monitors actual DH and DL output transitions - not just input PWM edges. When DH turns off, the circuit delays DL turn-on until DH voltage fully settles; similarly, DL turn-off delays DH turn-on. This real-time sensing works only with low-inductance, short gate traces (10–20 squares) between the MAX8702ETP and MOSFET gates. The 0.35Ω typical DL on-resistance further suppresses false turn-on from LX node dV/dt coupling.
Can the MAX8702ETP operate with a 3.3V logic supply?
No, the MAX8702ETP requires VCC and VDD supplies between 4.5V and 5.5V - it does not support 3.3V logic interfaces. Its PWM, SHDN, and SKIP inputs have TTL/CMOS thresholds (VIH = 2.4V min, VIL = 0.8V max), but internal circuitry and gate drivers are designed for 5V operation. Using 3.3V logic levels risks unreliable UVLO behavior, degraded drive strength, and undefined thermal sensor accuracy. A level-shifter or 5V bias rail is mandatory for interface compatibility.
What happens to the MAX8702ETP outputs during shutdown mode?
When both SHDN and SKIP pins are driven low, the MAX8702ETP enters shutdown mode: DH1/DH2 are forced low, DL1/DL2 are forced high, quiescent current drops to 2µA (typ), and the temperature sensor (including DRHOT and TSET circuitry) is disabled. This state isolates the power stage, prevents unintended switching, and eliminates gate-drive leakage paths - ensuring safe, low-power standby in battery-powered systems. Normal operation resumes when SHDN returns high.
Is the MAX8702ETP pin-compatible with the MAX8703ETP?
Yes, the MAX8702ETP and MAX8703ETP share identical pinout, package (20-pin thin QFN), electrical specifications, and functional behavior - except the MAX8702ETP includes additional TSET and DRHOT pins (pins 4 and 5), which are No Connect (N.C.) on the MAX8703ETP. PCB layouts designed for MAX8702ETP can accommodate MAX8703ETP without modification, though DRHOT pull-up and TSET resistor must be omitted or left unpopulated. Thermal sensing capability is the sole functional difference.
MAX8702ETP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WFQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Synchronous
- Number of Drivers:
- 4
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 4.5V ~ 28V
- Logic Voltage - VIL, VIH:
- 0.8V, 2.4V
- Current - Peak Output (Source, Sink):
- 1.5A, 1.5A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- -
- Rise / Fall Time (Typ):
- 16ns, 14ns
- Operating Temperature:
- -40°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TQFN-EP (4x4)
MAX8702ETP FAQ
1.How can I place an order for MAX8702ETP through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8702ETP 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 MAX8702ETP reliable?
The price and inventory of MAX8702ETP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8702ETP is usually 5 days.
3.What payment methods are accepted for MAX8702ETP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8702ETP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8702ETP?
MAX8702ETP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8702ETP 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 MAX8702ETP?
For technical support, including MAX8702ETP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8702ETP requirements.
6.How does Aetrix verify that MAX8702ETP is sourced from the original manufacturer or authorized distributors?
All MAX8702ETP 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 MAX8702ETP meets industry standards.
7.What is the process for return or replacement of MAX8702ETP?
All MAX8702ETP units undergo pre-shipment inspection (PSI). If there is an issue with MAX8702ETP, 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 MAX8702ETP part is unused and in its original packaging.
Return procedure for MAX8702ETP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8702ETP Tags
-
ZXGD3009E6TA
Diodes Incorporated
-
1EDN7512BXTSA1
Infineon Technologies
-
UCC27517DBVR
Texas Instruments
-
MCP1416T-E/OT
Microchip Technology
-
MCP1402T-E/OT
Microchip Technology
-
MCP1415T-E/OT
Microchip Technology
-
MCP1401T-E/OT
Microchip Technology
-
IX4428NTR
Littelfuse Inc.
-
IRS2005STRPBF
Infineon Technologies
-
IRS2008STRPBF
Infineon Technologies
-
IX4310TTR
Littelfuse Inc.
-
2EDN7524RXTMA1
Infineon Technologies
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
