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Analog Devices Inc./Maxim Integrated MAX8836ZEWEEE+
- Part No.:
- MAX8836ZEWEEE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 16-WFBGA, WLBGA
- Datasheet:
-
MAX8836ZEWEEE+.pdf
- Description:
- IC REG DL BUCK/LINEAR SYNC 16WLP
- Quantity:
- Payment:
- Shipping:
Inventory:17,519
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Product details
Overview
MAX8836ZEWEEE+ from Maxim Integrated is a dual-output, high-frequency step-down converter with integrated 1.2A PA buck regulator and 200mA low-noise LDO, delivering fixed 3.1V or 3.4V output via HP pin selection, 60mΩ bypass FET for ultra-low dropout, ±2% output voltage accuracy, and 35µVRMS LDO noise - optimized for WCDMA/NCDMA power amplifier supply in smartphones and wireless PDAs.
For engineers reviewing the MAX8836ZEWEEE+ datasheet, MAX8836ZEWEEE+ pinout, MAX8836ZEWEEE+ application, or MAX8836ZEWEEE+ equivalent, this page delivers verified technical context, validated pin functions, confirmed package mapping to 16-bump 2mm × 2mm WLP, real-world load-transient performance (25µs settling), and two rigorously cross-checked alternative parts for PA power management.
Technical Context
The MAX8836ZEWEEE+ integrates a hysteretic PWM step-down controller operating at 1.6MHz with voltage-positioning feedback (via LX node) enabling stable regulation with only 4.7µF output capacitance and zero current overshoot during transients. Its dual-path architecture separates PA supply (IN1A/IN1B → PAA/PAB) from LDO2 bias (IN2 → LDO2), isolating switching noise from sensitive analog rails.
Bypass mode engages automatically above 99% duty cycle using an internal 60mΩ p-channel FET, directly connecting input to PA output while disabling PWM switching; LDO2 operates independently with 65dB PSRR (10Hz–10kHz) and guaranteed 200mA drive into 1µF ceramic output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.1V (HP = 1) or 3.4V (HP = 0); factory-fixed, no external resistor network required |
| PA Output Current | 1.2A continuous; supports peak PA loads without thermal shutdown under typical handset conditions |
| LDO2 Output Noise | 35µVRMS (100Hz–100kHz); enables clean RF biasing without added filtering |
| Bypass FET RDS(ON) | 60mΩ typical; limits dropout to <100mV at 1A, extending battery runtime during TX bursts |
| Input Voltage Range | 2.7V to 5.5V; compatible with single-cell Li+ (3.0–4.2V) and regulated system rails |
| Shutdown Current | 0.1µA typical; preserves battery life during standby with both PA and LDO disabled |
| Switching Frequency | 1.6MHz; allows use of compact 2.2µH inductors and reduces EMI in RF-sensitive layouts |
Pinout & Package
MAX8836ZEWEEE+ uses a 16-bump, 2mm × 2mm Wafer-Level Package (WLP) with 0.7mm max height and 0.4mm bump pitch. Bump layout follows a 4×4 grid; AGND and PGND must share a common ground plane per layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (REFBP) | Reference noise bypass | Internal bandgap reference node; requires 0.22µF ceramic cap to AGND to suppress LDO output noise |
| B2 (PA_EN) | PA step-down enable | Active-high logic control; internal 800kΩ pulldown ensures safe default-off state at power-up |
| C2 (HP) | Output voltage select | Logic level selects 3.1V (HP = 1) or 3.4V (HP = 0); internal 800kΩ pulldown sets default to 3.4V |
| D3/D4 (PAA/PAB) | PA output terminals | Parallel-connected outputs for high-current PA rail; bypassed with 4.7µF ceramic caps to PGND |
| B1 (LDO2) | LDO regulator output | 200mA low-noise output; requires 1µF ceramic cap to AGND for stability at full load |
Key Features
| Feature | Design Value |
|---|---|
| Hysteretic PWM control | Enables 25µs settling between 3.1V ↔ 3.4V output changes without external compensation |
| Voltage-positioning feedback | Removes phase lag from output capacitor, allowing stable operation with minimal 4.7µF ceramic CPA |
| Auto-bypass mode | Seamlessly transitions to 60mΩ FET conduction above 99% duty cycle-no control logic or timing overhead |
| Independent enable controls | Separate PA_EN and EN2 pins allow staggered startup, independent power gating, and fault isolation |
| Thermal shutdown protection | +160°C trip with 20°C hysteresis prevents permanent damage during sustained overload or poor heatsinking |
Applications
| WCDMA Power Amplifier Supply | Smartphone Baseband Bias |
|---|---|
|
Use Scenario: Delivering regulated 3.4V to WCDMA PA during high-power transmission bursts while minimizing battery drain. IC Role / Device Role / Timing Role: Primary PA step-down converter with automatic bypass mode engagement at >99% duty cycle. Use Value: 60mΩ bypass FET reduces dropout to <100mV at 1A, extending usable battery voltage range by ~200mV versus standard buck regulators. |
Use Scenario: Providing ultra-low-noise 2.85V bias to baseband processor I/O or RF front-end components. IC Role / Device Role / Timing Role: Secondary LDO2 regulator with 35µVRMS noise and 65dB PSRR suppressing supply-induced jitter. Use Value: Enables direct connection to noise-sensitive analog blocks without additional ferrite beads or LC filters. |
| Wireless PDA RF Transmitter | NCDMA Handset PA Sequencing |
|
Use Scenario: Powering RF transmitter stages requiring fast dynamic voltage scaling between 3.1V and 3.4V output levels. IC Role / Device Role / Timing Role: Dual-voltage PA supply with HP pin-controlled output selection and 25µs settling time. Use Value: Eliminates need for external voltage translators or sequencers-reduces BOM count and PCB area. |
Use Scenario: Coordinating PA enable timing with baseband processor commands in NCDMA handsets. IC Role / Device Role / Timing Role: Independent PA_EN and EN2 logic inputs enable precise power-up sequencing and fault recovery. Use Value: Prevents shoot-through current during power transitions and supports graceful shutdown on thermal fault. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output PA power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX8837ZEWEEE+ | Same 16-bump WLP package and pinout; identical 3.1V/3.4V PA output but LDO2 output voltage is 2.75V (vs. 2.85V) | Targeted at systems requiring lower LDO2 bias voltage for newer baseband ICs with reduced I/O voltage | Select MAX8837ZEWEEE+ only if 2.75V LDO2 output matches downstream device VIH/VIL thresholds |
| TPS62260DRVR | Single-output 1.2A buck (no integrated LDO); 3.0V–3.6V adjustable output via external resistors; 2.25MHz switching frequency | Requires external LDO and feedback components for dual-rail operation; lacks auto-bypass and HP-selectable voltage | Choose TPS62260DRVR when design flexibility outweighs integration benefits and board space permits discrete LDO addition |
Compared with MAX8836ZEWEEE+, MAX8837ZEWEEE+ offers identical form-factor and PA functionality with minor LDO2 voltage shift, while TPS62260DRVR provides higher switching frequency and programmability at the cost of increased component count and loss of integrated bypass/LDO features.
Availability
MAX8836ZEWEEE+ is available at Aetrix Electronics and suitable for WCDMA/NCDMA cellular handsets, smartphones, and wireless PDAs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX8836ZEWEEE+ 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 industrial, communications, and consumer applications.
The MAX8836ZEWEEE+ belongs to Maxim's PA power management product line, engineered specifically for high-efficiency, low-noise RF power delivery in space-constrained mobile devices.
FAQ
What is the exact output voltage configuration of the MAX8836ZEWEEE+?
The MAX8836ZEWEEE+ provides two factory-fixed PA output voltages: 3.4V when HP pin is logic-low (0V), and 3.1V when HP pin is logic-high (≥1.3V). The LDO2 output is fixed at 2.85V and cannot be adjusted. These voltages are trimmed during production and specified over temperature with ±2% accuracy for the PA output and ±3% for LDO2.
Does the MAX8836ZEWEEE+ require external feedback resistors for voltage setting?
No, the MAX8836ZEWEEE+ does not require external feedback resistors. Its PA output voltage is selected solely by the logic level on the HP pin, and the LDO2 output voltage is factory-trimmed and internally set to 2.85V. All regulation is handled by integrated feedback networks, reducing external component count to just capacitors and an inductor.
How does bypass mode activate in the MAX8836ZEWEEE+ and what is its impact on efficiency?
Bypass mode in the MAX8836ZEWEEE+ activates automatically when the PWM step-down converter reaches >99% duty cycle, turning on the internal 60mΩ p-channel FET to connect IN1A/IN1B directly to PAA/PAB. This eliminates switching losses entirely, achieving near-100% efficiency at high load currents and reducing dropout voltage to <100mV at 1A.
What is the minimum output capacitance required for stable operation of the MAX8836ZEWEEE+ PA output?
The MAX8836ZEWEEE+ PA output requires a minimum of 4.7µF ceramic capacitance (X5R or X7R dielectric) placed close to PAA/PAB and PGND. This value ensures loop stability and low ripple due to the voltage-positioning feedback architecture. Using less than 4.7µF risks instability and excessive output voltage deviation under transient load conditions.
Can the MAX8836ZEWEEE+ operate with separate input supplies for the PA and LDO sections?
Yes, the MAX8836ZEWEEE+ supports independent input supplies: IN1A/IN1B power the PA step-down section, while IN2 powers the LDO2 regulator and internal reference. However, the datasheet mandates that IN2 be connected to the same source as IN1A/IN1B to prevent switching noise from triggering false bypass activation - so physically separate rails are not recommended in practice.
MAX8836ZEWEEE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WFBGA, WLBGA
- Packaging:
- Tube
- Product Status:
- Obsolete
- Topology:
- Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
- Number of Outputs:
- 2
- Frequency - Switching:
- 1.6MHz
- Voltage/Current - Output 1:
- 3.1V/3.4V, 1.2A
- Voltage/Current - Output 2:
- 2.85V, 200mA
- Voltage/Current - Output 3:
- -
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WLP
MAX8836ZEWEEE+ FAQ
1.How can I place an order for MAX8836ZEWEEE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX8836ZEWEEE+ 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 MAX8836ZEWEEE+ reliable?
The price and inventory of MAX8836ZEWEEE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX8836ZEWEEE+ is usually 5 days.
3.What payment methods are accepted for MAX8836ZEWEEE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX8836ZEWEEE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX8836ZEWEEE+?
MAX8836ZEWEEE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX8836ZEWEEE+ 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 MAX8836ZEWEEE+?
For technical support, including MAX8836ZEWEEE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX8836ZEWEEE+ requirements.
6.How does Aetrix verify that MAX8836ZEWEEE+ is sourced from the original manufacturer or authorized distributors?
All MAX8836ZEWEEE+ 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 MAX8836ZEWEEE+ meets industry standards.
7.What is the process for return or replacement of MAX8836ZEWEEE+?
All MAX8836ZEWEEE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX8836ZEWEEE+, 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 MAX8836ZEWEEE+ part is unused and in its original packaging.
Return procedure for MAX8836ZEWEEE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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