My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1674EUA-TG069
- Part No.:
- MAX1674EUA-TG069
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX1674EUA-TG069.pdf
- Description:
- IC REG BOOST ADJ 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,431
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1674EUA-TG069 from Maxim Integrated is an 8-pin µMAX packaged, synchronous step-up DC-DC converter optimized for single-cell battery-powered devices. It delivers up to 300mA output current at 3.3V or 5V (pin-selectable), features 16µA quiescent current, a 1A internal N-channel MOSFET switch with 0.3Ω RDS(ON), and guaranteed start-up from 1.1V input. It is used in pagers, wireless phones, and hand-held medical devices requiring compact, high-efficiency boost conversion.
For engineers reviewing the MAX1674EUA-TG069 datasheet, MAX1674EUA-TG069 pinout, MAX1674EUA-TG069 application, or MAX1674EUA-TG069 equivalent, this page provides verified technical context, confirmed pin functions, real-world operating limits, and validated alternative options for low-voltage boost power design.
Technical Context
The MAX1674EUA-TG069 implements a minimum-off-time, current-limited PFM control scheme-no oscillator required-with fixed 1A peak switch current and typical 1µs minimum off-time. Its internal synchronous rectifier replaces external Schottky diodes, reducing losses and board area while enabling 94% efficiency at 200mA load.
It integrates a 1.30V reference (±2.5mV tolerance), dual-mode feedback (FB tied to GND for 5V or OUT for 3.3V), LBI/LBO low-battery detection, and logic-controlled shutdown drawing only 0.1µA. Input voltage range is 0.7V to VOUT, with guaranteed start-up at 1.1V (with optional external diode).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Pin-selectable 3.3V or 5.0V; adjustable from 2.0V to 5.5V via resistor divider on FB pin |
| Max Output Current | 300mA steady-state at 3.3V (VIN ≥ 2.4V); limited by thermal dissipation and 1A switch current |
| Quiescent Current | 16µA operating current enables >1-year battery life in low-duty-cycle portable devices |
| Shutdown Current | 0.1µA into OUT pin ensures minimal battery drain during system sleep mode |
| Switch RDS(ON) | 0.3Ω typical (N-channel) minimizes conduction loss and improves efficiency at medium loads |
| Start-Up Voltage | Guaranteed 1.1V (with external Schottky diode); functional down to 0.9V per characterization |
| Efficiency | 94% at 200mA output (VIN = 2.4V → VOUT = 5V), critical for extending alkaline/NiMH cell runtime |
Pinout & Package
MAX1674EUA-TG069 is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), thermally enhanced with exposed pad (not electrically connected). Pin 1 is marked with dot; top-view orientation matches standard µMAX layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Dual-mode feedback input | Connect to GND for 5V output; to OUT for 3.3V; use resistor divider for adjustable outputs (2–5.5V) |
| 2 LBI | Low-battery comparator input | Internal 1.30V threshold; monitors battery voltage via external resistor divider (e.g., R3/R4) |
| 3 LBO | Open-drain low-battery output | Sinks current when LBI < 1.30V; requires 100kΩ pull-up to OUT; high-impedance in shutdown |
| 4 REF | 1.30V precision reference output | Bypass with 0.1µF capacitor; sources ≤100µA; ±2.5mV accuracy over temperature |
| 5 SHDN | Logic-controlled shutdown input | Drive <0.2×VOUT for shutdown (0.1µA ISHDN); drive >0.8×VOUT for operation |
| 6 GND | Power and signal ground | Primary return path; must be short-connected to input/output capacitor grounds (<5mm) |
| 7 LX | Switch node (N/P-channel drain) | Connects to inductor; exhibits ringing without damping (MAX1676 only has damping switch) |
| 8 OUT | Regulated power output | Provides bootstrap supply to IC; drives load and external LBO pull-up; max 6.0V absolute rating |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode-reduces BOM cost, PCB area, and forward-drop losses |
| PFM control architecture | No oscillator; variable frequency (up to 500kHz); maintains high efficiency across 10µA–300mA load range |
| Low-battery detection | Integrated LBI/LBO comparator with 1.30V reference enables system-level battery monitoring without extra IC |
| Ultra-low quiescent current | 16µA operating current extends shelf life and runtime in intermittent-use portable equipment |
| Single-cell start-up support | Operates from 0.7V input; guaranteed 1.1V start-up with MBR0520 diode-enables full discharge of NiMH/alkaline cells |
Applications
| Pagers | Wireless Phones |
|---|---|
Use Scenario: Compact handheld paging units powered by single AA/AAA alkaline cells requiring stable 3.3V rail for RF and logic. IC Role / Device Role / Timing Role: Step-up DC-DC converter providing regulated 3.3V output from decaying 0.9–1.5V battery source. Use Value: Enables full battery utilization (down to 0.9V) and >1-year standby via 16µA quiescent current. |
Use Scenario: DECT or Bluetooth cordless handsets needing efficient 5V supply for audio codec and RF front-end. IC Role / Device Role / Timing Role: Primary boost regulator delivering 5V at up to 300mA with minimal thermal rise in sealed plastic housing. Use Value: 94% efficiency at 200mA reduces heat generation and extends talk time per charge cycle. |
| Medical Devices | Hand-Held Computers |
Use Scenario: Portable glucose meters or pulse oximeters using coin-cell or AAA batteries with strict size constraints. IC Role / Device Role / Timing Role: Compact µMAX-packaged boost converter generating 3.3V for MCU, sensor interface, and LCD backlight driver. Use Value: 8-pin µMAX footprint (3×3mm) saves PCB space; LBI/LBO enables battery end-of-life alerting. |
Use Scenario: Ruggedized industrial PDAs running ARM-based SoCs requiring clean 3.3V core voltage from 1.2–1.8V Li-ion or NiMH packs. IC Role / Device Role / Timing Role: High-efficiency step-up regulator supporting dynamic load steps (e.g., display backlight turn-on) without brownout. Use Value: Fast transient response (500µs recovery) and 1A switch current prevent VOUT droop during burst loads. |
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 |
|---|---|---|---|
| TPS61200DRCT | Fixed 3.3V output; 1.8V min input; 1.2A switch current; 2.5µA quiescent current | Lacks LBI/LBO, adjustable FB, and dual-mode preset; no low-battery monitor integration | Preferred when ultra-low IQ dominates design priority and battery monitoring is handled externally |
| LT1930ES5#TRMPBF | 500kHz fixed-frequency PWM; 1.2A switch; 100µA quiescent current; 0.9V min start-up | Higher IQ reduces battery life; no integrated reference or LBO; requires external feedback resistors | Chosen for EMI-sensitive environments where fixed-frequency operation simplifies filtering |
Compared with MAX1674EUA-TG069, TPS61200DRCT offers lower quiescent current but omits battery monitoring, while LT1930ES5#TRMPBF provides predictable EMI profile at the cost of 6× higher operating current-making MAX1674EUA-TG069 optimal for space-constrained, battery-aware portable systems.
Availability
MAX1674EUA-TG069 is available at Aetrix Electronics and suitable for pagers, wireless phones, and hand-held medical devices requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MAX1674EUA-TG069 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 industrial, medical, and portable applications.
MAX1674EUA-TG069 belongs to Maxim's high-efficiency, low-IQ boost converter family targeting single-cell battery systems where size, efficiency, and battery monitoring are co-critical.
FAQ
What is the minimum input voltage required for MAX1674EUA-TG069 to start up?
The MAX1674EUA-TG069 guarantees start-up from 1.1V input when used with an external Schottky diode (e.g., MBR0520) between LX and OUT. Without the diode, start-up is functional down to 0.9V per characterization data, though not production-guaranteed. The device operates continuously from 0.7V to VOUT, making it ideal for deeply discharged alkaline or NiMH cells.
How does the MAX1674EUA-TG069 achieve 94% efficiency at 200mA?
The MAX1674EUA-TG069 achieves 94% efficiency at 200mA through three key features: a 0.3Ω RDS(ON) internal N-channel MOSFET switch, integrated synchronous rectification (eliminating Schottky diode forward drop), and a PFM control scheme that minimizes switching losses at light-to-moderate loads. These reduce both conduction and switching losses simultaneously.
Can the output voltage of MAX1674EUA-TG069 be adjusted beyond 3.3V and 5.0V presets?
Yes, the MAX1674EUA-TG069 supports adjustable output voltages from 2.0V to 5.5V using a resistor divider from OUT to FB to GND. The FB pin senses a fraction of VOUT referenced to the internal 1.30V bandgap; selecting R5 and R6 per the equation R5 = R6 × (VOUT/1.3 − 1) sets the desired output precisely.
What is the function of the LBI and LBO pins on MAX1674EUA-TG069?
The LBI (Low-Battery Input) pin connects to a resistor divider across the battery to sense voltage; it trips when voltage falls below the internal 1.30V reference. The LBO (Low-Battery Output) pin is an open-drain output that sinks current when LBI < 1.30V-enabling system-level battery exhaustion alerts without additional comparators. MAX1674EUA-TG069 integrates this function directly.
Is MAX1674EUA-TG069 pin-compatible with MAX1675EUA or MAX1676EUB?
No, MAX1674EUA-TG069 is not pin-compatible with MAX1675EUA (same 8-pin µMAX but different CLSEL/LX pin mapping) or MAX1676EUB (10-pin µMAX with added CLSEL and BATT pins). Pin configurations differ across the family: MAX1674/MAX1675 share 8-pin layout, while MAX1676 uses 10 pins and adds damping control. Always verify pinout per device datasheet before PCB reuse.
MAX1674EUA-TG069 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable (Programmable)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2V (3.3V, 5V)
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- -
- Frequency - Switching:
- Up to 500Hz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-µMAX
MAX1674EUA-TG069 FAQ
1.How can I place an order for MAX1674EUA-TG069 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1674EUA-TG069 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 MAX1674EUA-TG069 reliable?
The price and inventory of MAX1674EUA-TG069 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1674EUA-TG069 is usually 5 days.
3.What payment methods are accepted for MAX1674EUA-TG069?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1674EUA-TG069 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1674EUA-TG069?
MAX1674EUA-TG069 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1674EUA-TG069 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 MAX1674EUA-TG069?
For technical support, including MAX1674EUA-TG069 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1674EUA-TG069 requirements.
6.How does Aetrix verify that MAX1674EUA-TG069 is sourced from the original manufacturer or authorized distributors?
All MAX1674EUA-TG069 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 MAX1674EUA-TG069 meets industry standards.
7.What is the process for return or replacement of MAX1674EUA-TG069?
All MAX1674EUA-TG069 units undergo pre-shipment inspection (PSI). If there is an issue with MAX1674EUA-TG069, 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 MAX1674EUA-TG069 part is unused and in its original packaging.
Return procedure for MAX1674EUA-TG069:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1674EUA-TG069 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…
