My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX8627ETD+T
- Part No.:
- MAX8627ETD+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
MAX8627ETD+T.pdf
- Description:
- IC REG BOOST ADJ 3.5A 14TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:13,316
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX8627ETD+T from Maxim Integrated is a low-input-voltage, synchronous boost DC-DC converter with True Shutdown™, delivering up to 1A output current at 3V–5V from 1.5V–4.2V battery sources. It features 1MHz fixed-frequency PWM operation, 20µA typical quiescent current, internal soft-start limiting inrush to 500mA, and integrated synchronous rectification for up to 95% efficiency. It powers microprocessor/DSP core rails in smartphones and DSCs.
For engineers reviewing the MAX8627ETD+T datasheet, MAX8627ETD+T pinout, MAX8627ETD+T application, or MAX8627ETD+T equivalent, key selection criteria include low-VBATT startup (1.2V min), adjustable current limit via ILIM, voltage positioning for load-transient stability, and TDFN-EP package thermal performance in space-constrained portable designs.
Technical Context
The MAX8627ETD+T employs current-mode PWM control with internal 1.015V feedback reference and slope compensation. It operates in fixed-frequency PWM mode above ~50mA load and transitions to discontinuous conduction idle mode below that threshold to maintain 20µA IQ.
True Shutdown disconnects input from output by disabling both n-channel switch and p-channel synchronous rectifier, reducing shutdown current to 0.1µA while pulling OUTS to GND. Internal damping switch suppresses LX ringing during light-load discontinuous operation without affecting output ripple.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.5V to 5.5V - supports single-cell Li+/Li-polymer (2.5V–4.2V) and 2-cell NiMH/NiCd (2.4V–3.0V) batteries. |
| Output Voltage Range | 3.0V to 5.2V - adjustable via external FB resistor divider; regulated to 1.015V ±10mV at FB pin. |
| Switching Frequency | 1.0MHz ±5% - enables use of small 1µH–4.7µH inductors and compact ceramic output capacitors. |
| Max Output Current | 1.0A at 5V - guaranteed with 3.5A peak inductor current limit (ILIM = GND); scalable down via ILIM resistor divider. |
| Quiescent Current | 20µA (typ) - measured at no load, switching; enables >1-week battery life in standby for handheld devices. |
| Shutdown Current | 0.1µA - logic-controlled True Shutdown eliminates input-to-output leakage, critical for battery preservation. |
| Soft-Start Time | 5.25ms (typ) - limits startup inrush to ≤500mA; duration varies with output capacitance and load resistance. |
Pinout & Package
MAX8627ETD+T is housed in a 14-pin, 3mm × 3mm TDFN-EP package with exposed pad (EP) for thermal dissipation. The package is RoHS-compliant and lead-free ("+" suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Analog Ground Reference | Primary analog ground node; must be connected to PG and AGND with low-impedance path to minimize noise coupling. |
| FB (Pin 2) | Voltage Feedback Input | Senses output via resistor divider; regulates VOUT to 1.015V - sets output as VOUT = 1.015V × (1 + R1/R2). |
| ON (Pin 3) | Enable Control Input | Active-high logic input; tie to BATT for always-on, or drive low for True Shutdown (0.1µA IQ). |
| BATT (Pins 4,5) | Main Power Input | Accepts 1.5V–5.5V source; requires two 22µF ceramic caps to PG for low-impedance decoupling. |
| POUT (Pins 6,7) | Power Output Node | Delivers regulated output; connects to two 22µF ceramic caps to PG - forms main output filter and loop stability network. |
| LX (Pins 8,9) | Inductor Switch Node | High-current switching node; connects to inductor; high-impedance in shutdown; requires short, wide PCB trace. |
| PG (Pins 10,11) | Power Ground | High-current return path for BATT, POUT, and LX; must be tied to GND and AGND with minimal inductance. |
| AGND (Pin 12) | Analog Ground | Reference for FB, ON, ILIM; connect directly to GND and PG to avoid ground bounce in feedback path. |
| ILIM (Pin 13) | Current Limit Control | Sets peak inductor current: 0V → 3.5A; resistor divider from POUT → GND scales limit downward for smaller magnetics. |
| OUTS (Pin 14) | IC Power Supply | Bootstrapped supply input - powered from POUT; IC operates once VPOUT ≥ 2.7V. |
| EP (Exposed Pad) | Thermal & Electrical Ground | Must be soldered to solid GND plane; improves thermal resistance and reduces EMI; does not replace GND pin connection. |
Key Features
| Feature | Design Value |
|---|---|
| True Shutdown™ | Breaks input-output path completely - output falls to GND and draws only 0.1µA, eliminating battery drain without external switches. |
| Voltage Positioning | Intentional 3% load regulation (e.g., 5.05V @ 0mA → 4.90V @ 1A) minimizes transient droop/overshoot without increasing output capacitance. |
| Internal Damping Switch | Actively suppresses LX ringing during discontinuous conduction mode, reducing EMI without degrading output ripple or efficiency. |
| Adjustable Current Limit | ILIM pin allows scaling peak inductor current from 3.5A down to ~0.3A using external resistors - optimizes magnetics size and cost per application. |
| Internal Compensation | Eliminates need for external compensation components - reduces BOM count and layout sensitivity while maintaining stability across capacitor types. |
Applications
| Smartphone Core Power | DSC Motor Drive |
|---|---|
Use Scenario: Powers ARM Cortex-A series application processor core rail (1.0–1.3V) from single-cell Li+ battery during active UI and camera capture. IC Role / Device Role / Timing Role: Primary step-up regulator supplying stable 3.3V intermediate bus to buck converters generating core voltage. Use Value: 20µA IQ extends standby time; voltage positioning ensures <±25mV transient deviation during CPU burst loads. | Use Scenario: Drives autofocus and optical image stabilization motors in digital still cameras using 2-cell NiMH battery. IC Role / Device Role / Timing Role: High-efficiency boost stage generating 5V motor supply from 2.4V–3.0V battery stack. Use Value: 1MHz switching enables compact 1µH inductor; True Shutdown prevents motor leakage current when camera is off. |
| MP3 Player Audio Codec | PDA System Bus |
Use Scenario: Supplies clean 3.3V bias to stereo DAC/ADC and headphone amplifier in portable audio players. IC Role / Device Role / Timing Role: Low-noise power source for analog signal chain; operates in PWM mode during playback, idle mode during pause. Use Value: Internal damping switch reduces radiated EMI near sensitive audio traces; 95% efficiency minimizes thermal impact on battery compartment. | Use Scenario: Generates 5V system bus for USB OTG, SD card interface, and backlight driver in legacy PDAs. IC Role / Device Role / Timing Role: Main power rail generator supporting multiple peripherals with dynamic load steps up to 800mA. Use Value: Soft-start limits inrush to 500mA during hot-plug events; adjustable ILIM prevents overcurrent tripping during SD card write bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61099YFFR | Lower IQ (300nA shutdown, 400nA in operation), but fixed 3.3V/5V outputs; no adjustable ILIM or voltage positioning. | Best for ultra-low-power always-on sensors; unsuitable where adjustable output or load-transient optimization is required. | Select MAX8627ETD+T when design demands programmable VOUT, precise current limiting, or voltage positioning for CPU/core rails. |
| RT9013-33GB | Fixed 3.3V output, 200mA max, no True Shutdown - output remains high in shutdown; lacks damping switch and soft-start. | Only fits low-current, fixed-voltage auxiliary rails; cannot replace MAX8627ETD+T in 1A motor or processor applications. | Choose MAX8627ETD+T for 1A loads, battery-sensitive shutdown behavior, or EMI-critical layouts requiring LX damping. |
Compared with TPS61099YFFR and RT9013-33GB, the MAX8627ETD+T uniquely combines 1A capability, True Shutdown, voltage positioning, and adjustable current limit - making it the only option among the three suitable for high-dynamic-load portable processor core supplies.
Availability
MAX8627ETD+T is available at Aetrix Electronics and suitable for smartphone core power, DSC motor drive, MP3 player audio codec, PDA system bus, and portable medical device power management requiring stable component supply across extended temperature (-40°C to +85°C) and long-lifecycle production.
Supply support for MAX8627ETD+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
Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for portable, industrial, and communications systems.
The MAX8627 product line targets ultra-low-IQ boost conversion for battery-powered handheld devices, emphasizing startup at sub-1.5V inputs, minimal standby drain, and robust transient response under dynamic loads.
FAQ
What is the minimum input voltage required for MAX8627ETD+T to start up?
The MAX8627ETD+T has a minimum startup voltage of 1.2V (typ) with no load. This allows reliable operation from deeply discharged single-cell Li+ batteries or low-voltage alkaline cells. Startup current is internally limited to 500mA during soft-start, and the device enters latched-off state if regulation is not achieved after 13 incremental current-limit steps.
How does True Shutdown work in MAX8627ETD+T, and what is its benefit?
True Shutdown in the MAX8627ETD+T disables both the n-channel main switch and the p-channel synchronous rectifier, breaking the conductive path between BATT and POUT. This reduces shutdown current to 0.1µA and forces POUT to discharge to GND - preventing battery drain through load leakage paths. Unlike conventional boost ICs, no external MOSFET is needed for true isolation.
Can MAX8627ETD+T generate a 3.3V output, and how is it configured?
Yes, MAX8627ETD+T supports 3.3V output via the FB pin. Connect a resistor divider between POUT and GND with R2 < 500kΩ, then calculate R1 = R2 × (3.3V / 1.015V − 1). For example, R2 = 499kΩ yields R1 ≈ 1.15MΩ. The IC regulates FB to 1.015V (typ), ensuring accurate output despite input or load variation.
What is the purpose of the ILIM pin on MAX8627ETD+T, and how is it used?
The ILIM pin on MAX8627ETD+T sets the peak inductor current limit. Grounding ILIM configures 3.5A maximum; applying a voltage between 0.25V and 0.45V scales the limit downward (e.g., 0.45V → ~1.0A). This allows optimization of inductor size and saturation margin for specific load requirements without changing the IC or layout.
Does MAX8627ETD+T require external compensation components?
No, MAX8627ETD+T includes internal compensation circuitry. This eliminates the need for external Type-II or Type-III compensation networks, simplifying design, reducing BOM cost, and improving layout robustness - especially when using ceramic or tantalum output capacitors with varying ESR characteristics.
MAX8627ETD+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 14-WFDFN Exposed Pad
- 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):
- 0.9V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- 5.2V
- Current - Output:
- 3.5A (Switch)
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TDFN (3x3)
MAX8627ETD+T FAQ
1.How can I place an order for MAX8627ETD+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8627ETD+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 MAX8627ETD+T reliable?
The price and inventory of MAX8627ETD+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8627ETD+T is usually 5 days.
3.What payment methods are accepted for MAX8627ETD+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8627ETD+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8627ETD+T?
MAX8627ETD+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8627ETD+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 MAX8627ETD+T?
For technical support, including MAX8627ETD+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8627ETD+T requirements.
6.How does Aetrix verify that MAX8627ETD+T is sourced from the original manufacturer or authorized distributors?
All MAX8627ETD+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 MAX8627ETD+T meets industry standards.
7.What is the process for return or replacement of MAX8627ETD+T?
All MAX8627ETD+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8627ETD+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 MAX8627ETD+T part is unused and in its original packaging.
Return procedure for MAX8627ETD+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX8627ETD+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…
