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Analog Devices Inc./Maxim Integrated MAX77932BEWO+T
- Part No.:
- MAX77932BEWO+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- -
- Datasheet:
-
MAX77932BEWO+T.pdf
- Description:
- SWITCHED CAPACITOR CONVERTER
- Quantity:
- Payment:
- Shipping:
Inventory:1,376
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Product details
Overview
The MAX77932BEWO+T from Maxim Integrated is a standalone, dual-phase switched-capacitor DC-DC converter delivering 8A output current with 2S-to-1S voltage conversion (VOUT = VIN/2), integrated power switches, and I²C programmability. It operates from 4.9V to 11V input, achieves 98.5% peak efficiency, and targets space-constrained portable electronics powered by 2-cell Li⁺ batteries.
For engineers reviewing the MAX77932BEWO+T datasheet, MAX77932BEWO+T pinout, MAX77932BEWO+T application, or MAX77932BEWO+T equivalent, key selection considerations include its inductorless topology, programmable OCP/UVLO/OVLO thresholds, 0.25–1.5MHz switching frequency range, thermal alarm at +100°C/+120°C, and WLP-42 (2.4mm × 2.8mm, 0.4mm pitch) package compatibility with high-density PCB layouts.
Technical Context
The MAX77932BEWO+T implements an interleaved dual-phase switched-capacitor architecture with fixed 50% duty cycle per phase, reducing output voltage and current ripple while enabling 8A continuous delivery. Its capacitor-based energy transfer eliminates inductors, shrinking solution footprint and height versus buck converters.
Control is executed via a 2-wire I²C interface supporting up to 3.4MHz clock rate, allowing real-time adjustment of soft-start current (145–580mA), switching frequency (6 options), OCP threshold (4.2–11.6A), and protection thresholds. Integrated thermal alarms (+100°C and +120°C), frequency dithering, and overvoltage/overcurrent/undervoltage protections ensure robust operation in consumer and industrial portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 8A continuous - supports high-power SoC and display subsystems in smartphones and tablets without external current boosting. |
| Voltage Conversion Ratio | VOUT = VIN/2 - enables direct migration from 1S to 2S battery architectures while preserving downstream 1S-equivalent power rail design. |
| Peak Efficiency | 98.5% at VIN = 7.4V, fSW = 0.25MHz - minimizes thermal dissipation and simplifies thermal management in sealed enclosures. |
| Quiescent Current | 30μA operating / 4μA shutdown - extends battery runtime in always-on or low-power standby modes. |
| Switching Frequency Range | 0.25MHz to 1.5MHz (I²C-programmable) - allows trade-off between capacitor size (higher fSW → smaller caps) and EMI profile (dithering enabled). |
| Protection Features | Programmable OVLO (9.5–11.0V), UVLO (3.98–4.22V), OCP (4.2–11.6A), thermal alarms at +100°C/+120°C - ensures safe operation under fault and transient conditions. |
| Package | WLP-42, 2.4mm × 2.8mm, 0.4mm pitch - ultra-compact wafer-level package optimized for thin, high-density mobile PCBs. |
Pinout & Package
The MAX77932BEWO+T is housed in a lead-free, 42-bump wafer-level package (WLP) measuring 2.4mm × 2.8mm with 0.4mm bump pitch. The package uses bottom-side bumps for connection; pin numbering follows standard top-view orientation with Pin 1 marked at corner A1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (B7, C7, D7, E7) | Primary power input | Accepts 4.9–11V 2S Li⁺ battery input; requires 4.7μF ceramic bypass to PGND for stability and EMI suppression. |
| OUT (A4–F5) | Regulated output | Delivers VIN/2 (e.g., ~4.2V from 8.4V input); 8-pin parallel routing supports low-impedance 8A delivery with minimal IR drop. |
| CF1P/CF1N, CF2P/CF2N | Flying capacitor terminals | Dual-phase flying cap nodes (2×47μF per phase recommended); enable charge redistribution for voltage halving with low loss. |
| BST1P/BST1N, BST2P/BST2N | Bootstrap supply inputs | Drive internal gate drivers for NMOS switches; each requires dedicated 0.047μF bootstrap capacitor to respective CF node. |
| EN (C5) | Enable control | Active-high digital enable with 2ms debounce; initiates soft-start sequence upon assertion, ensuring controlled inrush current. |
| SDA/SCL (C2/D2) | I²C interface | Supports Fast-mode Plus (3.4MHz) for rapid configuration of protection thresholds, frequency, and soft-start parameters. |
| PGOOD (D6) | Power-good indicator | Open-drain output asserting high when VOUT is within ±5% of target and no faults are active; used for system sequencing. |
| IRQB (D5) | Interrupt output | Active-low interrupt signaling thermal alarm, OCP, UVLO, or OVLO events; requires 100kΩ pull-up to VIO for proper logic level. |
| VIO (D3) | I/O supply | Provides 1.2–6V logic reference for SDA/SCL/IRQB/EN; decoupled with 1μF capacitor to AGND for noise immunity. |
| PGND/AGND (A1,B1,E1,F1 / D1) | Ground returns | Separate power (PGND) and analog (AGND) grounds minimize noise coupling into sensitive control circuitry and LDOs. |
Key Features
| Feature | Design Value |
|---|---|
| Inductorless 2S-to-1S conversion | Eliminates magnetic components, reducing solution height to <0.4mm and total area by >40% vs. comparable buck solutions. |
| Programmable soft-start current | Four selectable levels (145/290/435/580mA) allow precise control of inrush current during power-up, preventing input voltage sag. |
| Dual thermal alarm outputs | Independent +100°C (warning) and +120°C (shutdown) thresholds enable staged thermal response-e.g., throttle CPU before full shutdown. |
| Frequency dithering | Configurable ±3%/±6%/±12% spread-spectrum modulation reduces peak EMI amplitude by up to 10dB, easing EMC certification. |
| Integrated AVDD/HVDD LDOs | On-chip 1.8V (AVDD) and VOUT+1.8V (HVDD) regulators power internal analog blocks and gate drivers-no external bias supplies required. |
| Active output discharge | Internal 1k–1.5kΩ discharge path on OUT pulls output to ground during shutdown, preventing floating rails and ensuring clean power-down sequencing. |
Applications
| Smartphone Power Management | Ultrabook Battery Interface |
|---|---|
|
Use Scenario: Replacing legacy buck converters in flagship smartphones transitioning from 1S to 2S Li⁺ battery packs to enable faster charging. IC Role / Device Role / Timing Role: Primary 2S-to-1S voltage halver supplying core SoC and DRAM rails; replaces discrete inductor-based solution. Use Value: Enables 2× faster 2S charging while maintaining identical 1S-equivalent system voltage, eliminating need for redesign of downstream PMICs and power domains. |
Use Scenario: Powering USB-C PD sink circuits and display subsystems in ultrathin notebooks using dual-cell battery stacks. IC Role / Device Role / Timing Role: High-current intermediate bus converter delivering stable 4.2V/8A from 8.4V battery to USB-C controller and OLED timing ICs. Use Value: Achieves 95% heavy-load efficiency at 8A, minimizing heat generation near sensitive RF and display components in thermally constrained chassis. |
| Portable Medical Imaging | Mobile Point-of-Sale (mPOS) |
|
Use Scenario: Supplying FPGA-based image processing modules in handheld ultrasound devices powered by compact 2S Li⁺ cells. IC Role / Device Role / Timing Role: Main system power converter providing low-noise, tightly regulated 3.3V-equivalent rail (via post-LDO) for ADCs and high-speed serial interfaces. Use Value: Ultra-low quiescent current (30μA) extends battery life during idle scanning intervals; programmable UVLO prevents operation below safe battery voltage. |
Use Scenario: Enabling compact, battery-operated mPOS terminals with integrated thermal printers and contactless readers. IC Role / Device Role / Timing Role: Single-chip power solution converting 7.4V 2S battery to 3.7V system rail and powering printer motor driver stage. Use Value: Dual-phase interleaving reduces output ripple to <20mVpp, preventing noise-induced errors in EMV contactless transaction decoding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switched-capacitor voltage conversion applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPS63900RWER | Single-phase SCC; 5A max output; supports only 2:1 and 3:2 ratios; no thermal alarm outputs. | Limited to lower-current applications; lacks dual thermal thresholds and interrupt-driven fault reporting. | Select when cost sensitivity outweighs need for 8A capability and advanced thermal monitoring. |
| Analog Devices LT8210EFE#PBF | Buck-boost controller (inductor-based); 6A typical; requires external MOSFETs and inductors; higher solution size. | Higher BOM count and board area; supports wider VIN/VOUT ranges but adds complexity and EMI filtering burden. | Prefer when input voltage may dip below 4.9V or output must be adjustable beyond VIN/2. |
Compared with the TPS63900RWER and LT8210EFE#PBF, the MAX77932BEWO+T delivers 60% higher output current in half the footprint, integrates dual thermal alarms for predictive thermal management, and eliminates inductors-making it optimal for next-gen 2S-powered portable devices where size, efficiency, and intelligent protection are critical.
Availability
The MAX77932BEWO+T is available at Aetrix Electronics and suitable for smartphone direct charging, portable medical imaging, and mobile point-of-sale terminals requiring stable component supply across high-volume production cycles.
Supply support for MAX77932BEWO+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 high-performance analog, mixed-signal, and power management ICs for demanding applications in automotive, industrial, and consumer markets.
The MAX77932BEWO+T belongs to Maxim's switched-capacitor power converter family, engineered specifically to replace inductor-based DC-DC solutions in space- and efficiency-critical portable electronics with 2S Li⁺ battery architectures.
FAQ
What is the maximum input voltage supported by the MAX77932BEWO+T?
The MAX77932BEWO+T supports an absolute maximum input voltage of +16V on the IN pin, but its operational input voltage range is specified from 4.9V to 11.0V. The default input overvoltage lockout (IOVP) threshold is 9.5V and is I²C-programmable to 10.0V, 10.5V, or 11.0V-ensuring safe operation with 2S Li⁺ batteries up to 8.4V nominal (12.6V fully charged) when configured appropriately. Exceeding 11.0V risks triggering IOVP shutdown.
Does the MAX77932BEWO+T require external inductors?
No, the MAX77932BEWO+T is an inductorless switched-capacitor converter. It uses flying capacitors (CF1P/CF1N and CF2P/CF2N) and integrated NMOS switches to achieve 2S-to-1S voltage conversion. This eliminates magnetic components entirely, reducing solution height to under 0.4mm and minimizing EMI compared to inductor-based buck converters-making it ideal for ultra-thin portable devices.
How is overcurrent protection configured on the MAX77932BEWO+T?
Overcurrent protection (OCP) on the MAX77932BEWO+T is fully I²C-programmable: the main OCP threshold can be set from 4.2A to 11.6A in 200mA steps (default 8.8A), and a secondary OCP2 offset (90–240mV) fine-tunes trip sensitivity. This dual-stage scheme allows precise current limiting tailored to specific load profiles-e.g., setting 8.8A for sustained SoC operation and 240mV offset for fast transient overload detection-without hardware changes.
What package type and dimensions does the MAX77932BEWO+T use?
The MAX77932BEWO+T uses a wafer-level package (WLP) with 42 solder bumps arranged in a 2.4mm × 2.8mm body and 0.4mm pitch. Its ultra-compact footprint and low profile (<0.4mm height) are optimized for high-density mobile PCBs. The package code is W422D2+1, and land pattern design must follow Maxim Application Note 1891 to ensure reliable reflow and mechanical integrity.
Can the MAX77932BEWO+T operate in environments above 85°C ambient temperature?
The MAX77932BEWO+T is rated for operation from –40°C to +85°C ambient temperature. Its junction temperature is limited to +150°C, and it features thermal alarms at +100°C (warning) and +120°C (shutdown) to protect against overheating. While short-term exposure above +85°C ambient may occur in thermally managed systems, sustained operation outside the specified ambient range is not guaranteed and may impact reliability or trigger thermal shutdown.
MAX77932BEWO+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- -
- Number of Outputs:
- -
- Frequency - Switching:
- -
- Voltage/Current - Output 1:
- -
- Voltage/Current - Output 2:
- -
- Voltage/Current - Output 3:
- -
- w/LED Driver:
- -
- w/Supervisor:
- -
- w/Sequencer:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX77932BEWO+T FAQ
1.How can I place an order for MAX77932BEWO+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX77932BEWO+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 MAX77932BEWO+T reliable?
The price and inventory of MAX77932BEWO+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX77932BEWO+T is usually 5 days.
3.What payment methods are accepted for MAX77932BEWO+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX77932BEWO+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX77932BEWO+T?
MAX77932BEWO+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX77932BEWO+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 MAX77932BEWO+T?
For technical support, including MAX77932BEWO+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX77932BEWO+T requirements.
6.How does Aetrix verify that MAX77932BEWO+T is sourced from the original manufacturer or authorized distributors?
All MAX77932BEWO+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 MAX77932BEWO+T meets industry standards.
7.What is the process for return or replacement of MAX77932BEWO+T?
All MAX77932BEWO+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX77932BEWO+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 MAX77932BEWO+T part is unused and in its original packaging.
Return procedure for MAX77932BEWO+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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