My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX618EEE+T
- Part No.:
- MAX618EEE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX618EEE+T.pdf
- Description:
- IC REG BOOST ADJ 1.4A 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,512
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX618EEE+T from Analog Devices is a CMOS PWM step-up DC-DC converter with an integrated 28V, 2A internal N-channel MOSFET switch. It accepts input voltages from +3V to +28V, delivers up to +28V output, supports ≥500mA output current at +12V, operates at 250kHz switching frequency, and achieves up to 93% efficiency in industrial +24V systems and LCD display power supplies.
For engineers reviewing the MAX618EEE+T datasheet, MAX618EEE+T pinout, MAX618EEE+T application, or MAX618EEE+T equivalent, key selection criteria include its wide input range (+3V to +28V), adjustable output voltage (up to +28V), low 500μA no-load supply current, 3μA shutdown current, and thermally enhanced 16-pin QSOP package rated for 1W dissipation at +70°C.
Technical Context
The MAX618EEE+T employs fixed-frequency PWM control combined with Maxim's proprietary Idle Mode™ to optimize efficiency across load ranges: continuous-conduction PWM dominates at medium-to-high loads (≥350mA), while cycle-skipping Idle Mode reduces losses at light loads. Its dual-loop compensation integrates voltage-control for tight regulation and current-control for stability over wide VIN/VOUT combinations.
It features adaptive slope compensation enabled by a single external capacitor, a dedicated 3.1V LDO (VL) for internal biasing with 100mV dropout, and robust protection including thermal shutdown at +150°C junction temperature and internal 2.2A LX current limit. The device supports boost, SEPIC, and flyback topologies with flexible input configurations (single-supply, dual-supply VL/IN).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +3V to +28V - enables direct operation from industrial 24V rails or battery stacks without pre-regulation. |
| Output Voltage Range | Adjustable up to +28V - set via external resistor divider on FB pin with 1.5V reference threshold. |
| Switch Current Limit | 2.2A typical - defines maximum peak inductor current and constrains output power under low-VIN conditions. |
| Switching Frequency | 250kHz typical - allows use of compact surface-mount inductors (e.g., 4.7µH) and ceramic capacitors. |
| No-Load Supply Current | 500µA - ensures high light-load efficiency and extended battery life in standby modes. |
| Shutdown Current | 3µA - minimizes system-level quiescent drain during inactive periods. |
| LX On-Resistance | 0.3Ω typical - reduces conduction loss in internal MOSFET, supporting >90% efficiency at full load. |
| Operating Temperature | –40°C to +85°C - qualified for industrial environments without derating up to ambient +70°C. |
Pinout & Package
The MAX618EEE+T is housed in a thermally enhanced 16-pin QSOP package (same footprint as industry-standard 8-pin SO but with double the pins and 1W power dissipation capability). Pin 1 is marked with a dot; top-view orientation places GND on pins 1, 8, 9, 12, and 16; PGND on pins 13–15; and LX on pins 2, 3, and 4.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (pins 1,8,9,12,16) | Analog ground reference | Common return for feedback, bias, and control circuits; must be tied to low-impedance ground plane. |
| LX (pins 2,3,4) | Drain of internal N-MOSFET | Connects to inductor node; carries high di/dt switching current; requires short, wide PCB trace. |
| PGND (pins 13,14,15) | Power ground return | Source terminal of internal switch; must be connected directly to inductor ground and input/output capacitor grounds. |
| IN (pin 10) | Main power input | Accepts +3V to +28V; powers internal LDO (VL) and gate driver; bypass with 1µF ceramic capacitor. |
| VL (pin 11) | 3.1V LDO output | Powers internal circuitry; requires 4.7µF ceramic bypass; can be overdriven by external 2.7V–5.5V supply to improve efficiency. |
| FB (pin 7) | Feedback input | Monitors output via resistor divider; 1.5V threshold sets VOUT = 1.5 × (1 + R1/R2); high-impedance (1nA bias). |
| COMP (pin 6) | Compensation node | Integrator output for loop stability; bypass to GND with CCOMP per Table 5 for selected COUT. |
| SHDN (pin 5) | Shutdown control | Active-low enable; logic low reduces IN current to 3µA; must not exceed VL voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 28V/2A N-MOSFET | Eliminates need for external high-voltage switch, reducing BOM count and layout complexity in boost converters. |
| Idle Mode™ operation | Automatically transitions to light-load cycle-skipping mode below ~350mA, maintaining >85% efficiency down to 1mA load. |
| Adaptive slope compensation | Stabilizes current-mode control across wide VIN/VOUT ratios using only one external capacitor (CP). |
| Thermally enhanced QSOP | 16-pin QSOP dissipates 1W at +70°C ambient-double the power handling of standard 8-pin SO packages. |
| Dual-supply configuration support | Allows VL to be driven externally (2.7V–5.5V) while IN powers inductor, enabling higher gate drive and improved efficiency. |
Applications
| Industrial +24V Systems | LCD Displays |
|---|---|
Use Scenario: Powering 24V auxiliary rails in programmable logic controllers (PLCs) and sensor transmitters operating from unregulated 24V DC inputs. IC Role / Device Role / Timing Role: Step-up regulator generating stable 24V or 28V output from lower input (e.g., 12V backup or degraded bus). Use Value: Maintains system uptime during brownouts via wide +3V–+28V input range and 93% peak efficiency at full load. | Use Scenario: Providing adjustable backlight voltage (12V–28V) for TFT-LCD panels in portable medical monitors and handheld test equipment. IC Role / Device Role / Timing Role: High-efficiency boost converter with precise output regulation controlled via FB resistor network. Use Value: Enables brightness control through analog dimming (via VOUT adjustment) while sustaining >500mA at 12V with <500µA quiescent current in standby. |
| Palmtop Computers | Portable Instrumentation |
Use Scenario: Generating 12V rail for analog front-end ICs and ADC drivers from a single-cell Li-ion battery (3.0V–4.2V nominal). IC Role / Device Role / Timing Role: Primary DC-DC converter in compact, battery-powered computing devices requiring regulated high-voltage outputs. Use Value: Delivers 500mA at 12V from 3.3V input with 90% efficiency and ultra-low 500µA no-load current to extend runtime. | Use Scenario: Powering isolated RS-485 transceivers and precision op-amps in handheld multimeters and data loggers. IC Role / Device Role / Timing Role: Compact, efficient boost stage supplying clean ±12V or +24V rails from low-voltage battery sources. Use Value: Achieves stable output with minimal EMI due to fixed 250kHz frequency and integrated MOSFET, simplifying filtering requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3467EMS#TRPBF | 2.5A switch, 1.2MHz switching frequency, 2.7V–16V input, integrated soft-start; no Idle Mode. | Better suited for space-constrained designs needing faster transient response; less optimal for ultra-low IQ battery apps. | Select when board area is critical and input voltage is ≤16V; avoid if >20V input or sub-1mA standby current required. |
| TPS61088RHLR | 10A switch, 2.5V–12V input, 2.7V–29V output, 1.5MHz frequency, integrated FETs; no VL LDO. | Higher current capability for demanding loads; lacks dedicated bias LDO for independent VL control. | Choose for >1A output needs and smaller inductors; not suitable when VL overdrive or dual-supply flexibility is required. |
Compared with LT3467EMS#TRPBF and TPS61088RHLR, the MAX618EEE+T uniquely combines 28V input tolerance, integrated 3.1V VL LDO for flexible biasing, Idle Mode™ for sub-mA efficiency, and thermally robust QSOP packaging-making it optimal for industrial 24V systems and LCD power where input range and light-load performance are critical.
Availability
The MAX618EEE+T is available at Aetrix Electronics and suitable for industrial +24V systems, LCD displays, palmtop computers, and portable instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX618EEE+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX618EEE+T belongs to Analog Devices' high-voltage DC-DC converter product line, designed specifically for reliable, efficient step-up power conversion in industrial and portable applications with wide input voltage ranges and stringent light-load efficiency requirements.
FAQ
What is the maximum output voltage achievable with the MAX618EEE+T?
The MAX618EEE+T supports an adjustable output voltage up to +28V, set by an external resistor divider on the FB pin using its precise 1.5V internal reference. This capability enables direct generation of standard industrial rails like +24V and +28V without post-regulation, and is confirmed in both the General Description and Electrical Characteristics sections of the datasheet.
How does the MAX618EEE+T achieve high efficiency at light loads?
The MAX618EEE+T achieves high light-load efficiency through its proprietary Idle Mode™ operation, which reduces switching frequency and inductor current during low-output-current conditions. As documented in the Detailed Description, this mode activates automatically below ~350mA, skipping cycles to minimize switching and conduction losses-enabling 500µA no-load supply current and >85% efficiency even at 1mA output.
Can the MAX618EEE+T operate from a single 3.3V supply?
Yes, the MAX618EEE+T can operate from a single 3.3V supply: its minimum input voltage is +3V, and its internal VL LDO regulates to 3.1V with only 100mV dropout. When VIN = 3.3V, VL remains above the 2.7V undervoltage lockout threshold, ensuring full functionality-including PWM control, feedback regulation, and shutdown-without external biasing.
What package type and thermal performance does the MAX618EEE+T feature?
The MAX618EEE+T is packaged in a 16-pin QSOP with exposed pad thermal enhancement, delivering 1W continuous power dissipation at +70°C ambient (derated 15mW/°C above that point). This thermally superior package matches the footprint of an 8-pin SO but provides double the pin count and thermal capacity-critical for sustained 500mA output in compact industrial layouts.
Does the MAX618EEE+T support SEPIC or flyback topologies in addition to boost?
Yes, the MAX618EEE+T explicitly supports SEPIC and flyback configurations in addition to standard boost, as stated in the Detailed Description and Operating Configurations sections. Its internal 28V N-MOSFET switch, flexible feedback architecture, and dual-supply capability (via separate IN and VL connections) enable these isolated and non-inverting topologies-verified in Figures 3 and 4 of the datasheet.
MAX618EEE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 28V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- 28V
- Current - Output:
- 1.4A (Switch)
- Frequency - Switching:
- 250kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
MAX618EEE+T FAQ
1.How can I place an order for MAX618EEE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX618EEE+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 MAX618EEE+T reliable?
The price and inventory of MAX618EEE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX618EEE+T is usually 5 days.
3.What payment methods are accepted for MAX618EEE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX618EEE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX618EEE+T?
MAX618EEE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX618EEE+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 MAX618EEE+T?
For technical support, including MAX618EEE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX618EEE+T requirements.
6.How does Aetrix verify that MAX618EEE+T is sourced from the original manufacturer or authorized distributors?
All MAX618EEE+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 MAX618EEE+T meets industry standards.
7.What is the process for return or replacement of MAX618EEE+T?
All MAX618EEE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX618EEE+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 MAX618EEE+T part is unused and in its original packaging.
Return procedure for MAX618EEE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX618EEE+T Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
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…
