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Analog Devices Inc./Maxim Integrated MAX8969EWL53+T
- Part No.:
- MAX8969EWL53+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 9-WFBGA, WLBGA
- Datasheet:
-
MAX8969EWL53+T.pdf
- Description:
- IC REG BOOST 5.3V 700MA 9WLP
- Quantity:
- Payment:
- Shipping:
Inventory:3,455
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Product details
Overview
The MAX8969EWL53+T from Maxim Integrated is a 1A, 3MHz synchronous step-up DC-DC converter in a 1.25mm × 1.25mm WLP package, designed for single-cell Li-ion systems requiring 5.3V output. It delivers up to 1A peak current with 90%+ efficiency, features True Shutdown™ (1µA), automatic track mode (65µA IQ), and integrated short-circuit/overtemperature/UVLO protection. It powers critical rails in compact handheld devices where input voltage (2.5–5.5V) may fall below or approach the 5.3V output target.
For engineers reviewing the MAX8969EWL53+T datasheet, MAX8969EWL53+T pinout, MAX8969EWL53+T application, or MAX8969EWL53+T equivalent, this page provides verified technical context, real-world operating modes (boost, ATM, track), validated pin functions, and confirmed alternative options for portable power rail design.
Technical Context
The MAX8969EWL53+T uses a fixed-frequency PWM architecture with automatic frequency adjustment-reducing switching frequency to ~1.6MHz or ~1MHz when VIN exceeds 83% of VOUT_TARGET (5.3V), enabling stable operation near input-output crossover. Its load/line control scheme trades DC output impedance for transient overshoot suppression during load removal.
Three distinct operational states are managed by EN and TREN inputs: True Shutdown (EN=0, TREN=0; 1µA IQ), Track Mode (EN=0, TREN=1; 30µA IQ, pMOS current-limited switch), and Automatic Track Mode (EN=1, VIN > 5.03V; 65µA IQ, auto-transition to boost at VIN < 4.98V). Boost mode activates only when EN=1 and VIN falls below ATM falling threshold (4.98V for 5.3V output).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.3V ±2.5% (no-load); regulated within ±0.35V across 0–500mA load at VIN ≥ 2.5V |
| Input Voltage Range | 2.5V to 5.5V; minimum startup voltage 2.3V; UVLO threshold 2.2V (75mV hysteresis) |
| Peak Output Current | 1A (pulse-rated); minimum continuous output 0.7A at VOUT=5.3V, VIN>2.5V, TA≤+85°C |
| Quiescent Current | 65µA in Automatic Track Mode; 45µA in Skip-mode boost; 30µA in Track Mode; 1µA in True Shutdown |
| Switching Frequency | 3MHz nominal; automatically reduces to ~1.6MHz or ~1MHz when VIN > 4.4V to maintain duty cycle control |
| Thermal Protection | Overtemperature shutdown at +165°C (20°C hysteresis); junction-to-ambient θJA = 83°C/W |
| Package | 9-bump WLP, 1.25mm × 1.25mm, 0.4mm pitch; RoHS-compliant, lead-free |
Pinout & Package
MAX8969EWL53+T is housed in a 1.25mm × 1.25mm, 9-bump Wafer-Level Package (WLP) with 0.4mm pitch. The bump-side-down top view places all terminals in a 3×3 grid (A1–C3). OUT1/OUT2 and LX1/LX2 must be shorted directly under the IC; GND1/GND2 share common ground plane connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | OUT1 | Main power output; bypassed with 22µF ceramic capacitor placed adjacent to IC; connects to OUT2 under package |
| A2 | OUT2 | Secondary output terminal; electrically tied to OUT1 under IC for low-impedance path and current sharing |
| A3 | IN | Input supply (2.5–5.5V); bypassed with 4.7µF ceramic capacitor; feeds LX_ via external 1µH inductor |
| B1 | LX1 | Switching node; connects to inductor; high-impedance in shutdown; tied to LX2 under IC |
| B2 | LX2 | Secondary switching node; internally identical to LX1; must be shorted to LX1 under package |
| B3 | EN | Enable input; logic-high forces boost or ATM mode regardless of TREN; logic-low enables TREN control |
| C1 | GND1 | Primary ground terminal; requires low-inductance connection to large PCB ground plane |
| C2 | GND2 | Secondary ground terminal; tied to GND1 under IC to reduce ground loop impedance |
| C3 | TREN | Track Enable input; logic-high selects Track Mode (30µA IQ); grounded for True Shutdown (1µA IQ) |
Key Features
| Feature | Design Value |
|---|---|
| True Shutdown™ | Blocks reverse current flow from LX_ to OUT_ using reversed pMOS body diode; eliminates leakage during system sleep (1µA IQ) |
| Automatic Track Mode (ATM) | Auto-transitions between pass-through (VIN → VOUT) and boost based on VIN vs. 95% of 5.3V target; enables dynamic efficiency optimization |
| Synchronous Rectification | Integrated nMOS and pMOS switches with on-resistances as low as 43mΩ (nMOS) and 79mΩ (pMOS) at 5.3V output |
| Soft-Start Control | Limits inrush current to ≤480mA during startup; output ramps at ~25mV/µs after initial delay |
| Light-Load Skip Mode | Reduces switching frequency and supply current under light loads; maintains >90% efficiency down to 1mA output |
Applications
| Cell Phone Power Rail | Smartphone Display Backlight |
|---|---|
Use Scenario: Powers 5.3V display bias or camera flash driver from declining Li-ion battery (3.0–4.2V). IC Role / Device Role / Timing Role: Step-up converter with ATM mode ensures seamless transition from battery direct feed to boost as cell voltage drops below 5.03V. Use Value: Extends usable battery life by maintaining regulated 5.3V output without manual mode switching or external control logic. |
Use Scenario: Supplies stable 5.3V to white LED strings in smartphone front-facing displays. IC Role / Device Role / Timing Role: Synchronous boost regulator with soft-start and low-noise skip mode minimizes EMI during display wake-up sequences. Use Value: Delivers 500mA continuous current with <20mVpp ripple, eliminating visible flicker and reducing thermal stress on LEDs. |
| GPS/PND RF Module Supply | eBook E-Ink Controller Rail |
Use Scenario: Generates clean 5.3V for GPS LNA and RF transceiver stages in portable navigation devices. IC Role / Device Role / Timing Role: High PSRR and fast line/load transient response (<20µs recovery) stabilize RF performance during battery voltage sag. Use Value: Maintains signal integrity and sensitivity by limiting output deviation to ±50mV during 50mA–500mA load steps. |
Use Scenario: Provides precise 5.3V gate drive for segmented e-Ink display controllers in low-power eBook readers. IC Role / Device Role / Timing Role: Ultra-low quiescent current (1µA shutdown, 30µA track) preserves battery during long idle periods between page turns. Use Value: Enables multi-week standby with single-cell Li-ion by minimizing no-load power loss while retaining instant wake-up capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS610995YFFR | Fixed 5.0V output; 1.2A peak; 1.2MHz switching; no ATM mode; 0.65µA shutdown IQ | Lower output voltage (5.0V vs. 5.3V); lacks automatic track functionality; simpler enable-only control | Choose for cost-sensitive designs needing only 5.0V with minimal external components and ultra-low shutdown current. |
| RT9080ALGQW | Adjustable output (up to 5.5V); 1.5A peak; 2.5MHz switching; no track/ATM modes; 2.5µA shutdown IQ | Requires external feedback resistors; no VIN-following modes; higher peak current but less intelligent light-load management | Choose when adjustable output or higher peak current is required, and system firmware can manage mode transitions externally. |
Compared with TPS610995YFFR and RT9080ALGQW, the MAX8969EWL53+T uniquely integrates automatic track mode for seamless VIN-VOUT crossover operation, delivers exact 5.3V output without feedback tuning, and achieves superior light-load efficiency via skip mode-making it optimal for battery-constrained handhelds demanding precise voltage and adaptive power states.
Availability
MAX8969EWL53+T is available at Aetrix Electronics and suitable for cell phone power rails, smartphone display backlight drivers, GPS/PND RF modules, and eBook e-Ink controller rails requiring stable component supply, tight output voltage tolerance, and low-quiescent-current operation.
Supply support for MAX8969EWL53+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) designs precision analog, mixed-signal, and power management ICs for demanding portable, industrial, and communications applications.
The MAX8969EWL53+T belongs to Maxim's handheld power management portfolio, engineered specifically for single-cell Li-ion systems needing adaptive step-up conversion with minimal board space and maximum battery runtime.
FAQ
What output voltage does the MAX8969EWL53+T deliver, and is it adjustable?
The MAX8969EWL53+T delivers a factory-trimmed fixed output voltage of 5.3V ±2.5% under no-load conditions, with regulation maintained within ±0.35V across 0–500mA load at VIN ≥ 2.5V. It is not adjustable-the internal feedback network is set for 5.3V, and no external resistor divider is supported. This simplifies layout and guarantees consistent performance without calibration.
How does the MAX8969EWL53+T behave when input voltage approaches or exceeds 5.3V?
When VIN rises above 5.03V (95% of 5.3V), the MAX8969EWL53+T enters Automatic Track Mode (ATM), turning on the pMOS switch to pass VIN to VOUT with minimal drop. If VIN then falls below 4.98V, it transitions back to boost mode in ≤1µs. This eliminates mode-switching glitches and maintains regulation without external supervision.
What protection features are integrated into the MAX8969EWL53+T?
The MAX8969EWL53+T integrates undervoltage lockout (UVLO at 2.2V), overtemperature shutdown (+165°C), short-circuit protection (continuous current limiting to 2.6A at LX_), and True Shutdown™ to block reverse current. During overload, it cycles into shutdown if VOUT drops below 3.8V (72% of 5.3V), then auto-retries upon fault clearance-ensuring robustness in handheld environments.
Can the MAX8969EWL53+T operate efficiently at very light loads, such as during system standby?
Yes-the MAX8969EWL53+T enters skip mode under light loads, reducing switching frequency and supply current to 45µA typical. In Track Mode (EN=0, TREN=1), IQ drops to 30µA; in True Shutdown (EN=0, TREN=0), it reaches 1µA. These modes extend battery life in standby without compromising wake-up speed or output stability.
What are the critical PCB layout requirements for the MAX8969EWL53+T?
Place the 22µF output capacitor directly adjacent to OUT1/OUT2 pins with shortest possible traces; position the 1µH inductor and 4.7µF input capacitor within 3mm of IN/LX pins; tie GND1/GND2 to a solid ground plane using multiple vias; avoid routing sensitive nodes (EN, TREN) near LX_ or inductors. Poor layout increases EMI, degrades transient response, and risks thermal runaway.
MAX8969EWL53+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 9-WFBGA, WLBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 5.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 700mA
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-WLP (1.26x1.26)
MAX8969EWL53+T FAQ
1.How can I place an order for MAX8969EWL53+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8969EWL53+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 MAX8969EWL53+T reliable?
The price and inventory of MAX8969EWL53+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8969EWL53+T is usually 5 days.
3.What payment methods are accepted for MAX8969EWL53+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8969EWL53+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8969EWL53+T?
MAX8969EWL53+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8969EWL53+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 MAX8969EWL53+T?
For technical support, including MAX8969EWL53+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8969EWL53+T requirements.
6.How does Aetrix verify that MAX8969EWL53+T is sourced from the original manufacturer or authorized distributors?
All MAX8969EWL53+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 MAX8969EWL53+T meets industry standards.
7.What is the process for return or replacement of MAX8969EWL53+T?
All MAX8969EWL53+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX8969EWL53+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 MAX8969EWL53+T part is unused and in its original packaging.
Return procedure for MAX8969EWL53+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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