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Analog Devices Inc./Maxim Integrated MAX15032ATA+T
- Part No.:
- MAX15032ATA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
MAX15032ATA+T.pdf
- Description:
- IC REG BOOST ADJ 1A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,893
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Product details
Overview
The MAX15032ATA+T from Maxim Integrated is a constant-frequency, current-mode PWM boost converter IC designed for low-noise, high-voltage bias generation in space-constrained automotive and industrial systems. It delivers up to 600mW output power at ≥2.9V input, supports adjustable output voltages from (VIN + 1V) to 36V, operates at 500kHz switching frequency, and features an integrated 0.5Ω (typ), 40V lateral DMOS switch - enabling PIN diode biasing and LCD display power supplies.
For engineers reviewing the MAX15032ATA+T datasheet, MAX15032ATA+T pinout, MAX15032ATA+T application, or MAX15032ATA+T equivalent, key selection criteria include its dual-input-range operation (+2.7V–+5.5V with charge pump or +5.5V–+11V direct), thermal shutdown at +160°C, 0.5µA max shutdown current, FB regulation at 1.245V (typ), and automotive-grade −40°C to +125°C operation in a 3mm × 3mm TDFN-EP package.
Technical Context
The MAX15032ATA+T implements a fixed-frequency (450–550kHz) current-mode PWM controller without internal slope compensation, optimized for discontinuous conduction mode (DCM) to minimize reverse-recovery noise. Its BiCMOS architecture integrates a direct-summing comparator that processes both feedback error and switch current signals in real time, eliminating conventional error amplifier phase lag.
It includes a programmable charge-pump doubler (enabled via CP/CN pins for 2.7V–5.5V inputs) and a thermally enhanced 8-pin TDFN-EP package with exposed pad tied to GND. The internal 40V DMOS switch, 1.7A peak current limit, and soft-start (8ms duration, 32-step ramp) ensure stable startup into capacitive loads while maintaining low EMI in sensitive analog bias applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +2.7V to +5.5V (with internal charge pump) or +5.5V to +11V (direct drive) - enables single-supply compatibility across battery and rail-powered systems |
| Output Voltage Range | (VIN + 1V) to 36V - supports wide-range programmable biasing without external regulators |
| Switching Frequency | 450kHz to 550kHz (typ 500kHz) - enables compact LC filtering with standard 4.7µH inductors and 2.2µF ceramic output caps |
| FB Regulation Voltage | 1.214V to 1.276V (typ 1.245V) - sets precise output voltage via resistive divider with <300nA input bias current |
| Shutdown Current | ≤0.5µA (max) at TA = −40°C to +125°C - ensures ultra-low quiescent power in always-on automotive modules |
| LX Switch RDS(ON) | 0.33Ω to 1Ω (typ 0.5Ω at VIN = VCP = 5.5V, ILX = 100mA) - balances conduction loss and thermal dissipation in 3mm × 3mm footprint |
| Thermal Shutdown | +160°C (rising), +8°C hysteresis - protects against sustained overload in sealed enclosures without external sensors |
Pinout & Package
Package: 3mm × 3mm, 8-pin TDFN-EP (exposed pad), RoHS-compliant, moisture-sensitive level 1. Thermal resistance θJA = 41°C/W (JEDEC JESD51-7, 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LX | Drain of internal 40V n-Channel DMOS switch | Connects to inductor/diode node; high dv/dt requires minimized trace area to reduce EMI radiation |
| GND | Signal ground reference | Must connect to local ground plane and tie to PGND at single point near output capacitor return |
| FB | Feedback regulation input | Senses output via resistive divider; regulates to 1.245V (typ); input bias ≤300nA minimizes divider current error |
| SHDN | Active-low shutdown control | Pull low to reduce supply current to ≤0.5µA; do not exceed VIN to avoid damage; connect to IN for always-on |
| IN | Main input supply voltage | Bypass to PGND with ≥4.7µF ceramic capacitor; supports dual input ranges depending on CP/CN configuration |
| CN | Negative terminal of charge-pump flying capacitor | Leave unconnected when VIN > +5.5V; required for +2.7V–+5.5V operation with external 10nF ceramic cap |
| CP | Positive terminal of charge-pump flying capacitor | Connect to IN when VIN > +5.5V to disable charge pump; ties to internal doubler during low-VIN operation |
| PGND | Power ground return | Return path for input/output capacitors; externally connect to GND at single point near COUT negative terminal |
Key Features
| Feature | Design Value |
|---|---|
| Constant 500kHz PWM frequency | Enables predictable EMI spectrum and simplifies filter design with standard off-the-shelf inductors and ceramics |
| Internal 40V, 0.5Ω (typ) DMOS switch | Eliminates external MOSFET and gate driver, reducing BOM count and PCB area in high-voltage bias rails |
| Dual-input-range architecture | Supports direct connection to 3.3V/5V logic rails or 9V–12V automotive batteries without external LDO pre-regulation |
| Integrated soft-start (8ms, 32-step) | Prevents inrush current into large output capacitance, avoiding input brownout in battery-powered systems |
| Thermal shutdown with 8°C hysteresis | Provides autonomous overtemperature protection without external circuitry, critical for sealed automotive modules |
Applications
| Avalanche Photodiode Biasing | PIN Diode RF Switch Bias |
|---|---|
|
Use Scenario: High-stability reverse-bias voltage for APD gain control in fiber-optic receivers operating in automotive temperature range. IC Role / Device Role / Timing Role: Precision DC-DC boost converter generating low-noise, ripple-free 30V–36V bias from 3.3V microcontroller rail. Use Value: 500kHz fixed frequency and DCM operation suppress diode recovery spikes; 0.5µA shutdown current extends battery life during sleep mode. |
Use Scenario: Fast-switching positive bias for RF PIN diode arrays in automotive radar front-ends requiring rapid ON/OFF transitions. IC Role / Device Role / Timing Role: High-efficiency step-up regulator delivering 24V bias from 5V domain, synchronized to RF enable timing via SHDN pin. Use Value: 1.7A peak current limit and 8ms soft-start prevent overshoot during RF burst activation; TDFN-EP package enables placement near antenna modules. |
| Varactor Diode Tuning Supply | LCD Display Backlight Driver Support |
|
Use Scenario: Low-drift, low-noise tuning voltage for varactor-based VCOs in vehicle infotainment tuners operating from cold-crank 6V battery. IC Role / Device Role / Timing Role: Adjustable-output boost converter providing 12V–28V bias with <1% load regulation to maintain oscillator stability. Use Value: FB setpoint tolerance (±2.5%) and <0.25% line regulation ensure consistent capacitance tuning; −40°C to +125°C rating matches under-hood environments. |
Use Scenario: Auxiliary high-voltage rail for LCD segment drivers in instrument cluster displays powered by 12V automotive battery. IC Role / Device Role / Timing Role: Compact, thermally robust boost stage generating 30V from 5V MCU supply to drive segmented LCD glass. Use Value: Exposed-pad TDFN package dissipates heat in confined dash-space; 600mW output supports multi-segment active matrix displays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3467EMS#TRPBF | Fixed 1.3MHz switching frequency; 40V switch; no internal charge pump; requires external bootstrap capacitor | Better suited for ultra-compact layouts needing higher frequency, but lacks dual-input-range flexibility and automotive temp grade | Select when board space is constrained and input is stable ≥5.5V; verify thermal performance without exposed pad |
| TPS61088RHLR | Adjustable 500kHz–2.2MHz frequency; 2.7V–12V input; 12.6V max output; integrated 13mΩ FETs; no charge pump | Optimized for USB PD and portable power banks; limited to ≤12.6V output - unsuitable for 30V+ APD/PIN biasing | Choose only for ≤12V applications where higher efficiency at light loads is prioritized over high-voltage capability |
Compared with LT3467EMS#TRPBF and TPS61088RHLR, the MAX15032ATA+T uniquely combines 36V output capability, −40°C to +125°C automotive qualification, dual-input-range operation, and integrated charge pump - making it the only option among the three qualified for high-voltage, wide-temperature biasing in safety-critical automotive subsystems.
Availability
MAX15032ATA+T is available at Aetrix Electronics and suitable for avalanche photodiode biasing, PIN diode RF switch supplies, and LCD display high-voltage generation requiring stable component supply across automotive production lifecycles.
Supply support for MAX15032ATA+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 automotive, industrial, and communications markets, with emphasis on reliability and integration.
The MAX15032 belongs to Maxim's high-voltage, low-noise DC-DC converter product line, engineered specifically for biasing sensitive RF and optical components in harsh automotive environments.
FAQ
What input voltage ranges does the MAX15032ATA+T support, and how are they configured?
The MAX15032ATA+T supports two distinct input ranges: +2.7V to +5.5V using its internal charge pump (requires external 10nF capacitor between CP and CN pins), and +5.5V to +11V in direct-drive mode (CP tied to IN, CN left open). This dual-mode architecture eliminates need for pre-regulation in mixed-rail systems. Configuration is hardware-defined and irreversible per design - the MAX15032ATA+T automatically detects and adapts based on CP/CN connections.
How does the MAX15032ATA+T achieve low-noise output for sensitive analog biasing?
The MAX15032ATA+T achieves low-noise output through three integrated techniques: (1) fixed 500kHz PWM frequency enabling predictable, easily filtered ripple; (2) discontinuous conduction mode (DCM) operation that eliminates diode reverse-recovery spikes; and (3) 6.8ns typical LX switch turn-off time, which reduces dv/dt-induced EMI coupling into adjacent analog nodes. These features collectively deliver clean DC bias essential for APD gain stability and varactor tuning linearity - confirmed in MAX15032ATA+T typical operating characteristics plots.
What is the role of the exposed pad (EP) on the MAX15032ATA+T TDFN package?
The exposed pad (EP) on the MAX15032ATA+T serves exclusively as a thermal dissipation path - it must be soldered to a large copper pour at GND potential to achieve the specified θJA = 41°C/W. It is not a functional electrical connection and must never be used as the primary GND return. Per Maxim's layout guidelines, GND and PGND must still be joined at a single point near the output capacitor, independent of EP connection. Failure to properly thermally anchor the EP compromises the MAX15032ATA+T's ability to sustain 600mW output power at +125°C ambient.
Can the MAX15032ATA+T be used in SEPIC or flyback topologies?
Yes, the MAX15032ATA+T can be configured in SEPIC or flyback topologies because its PWM controller drives a grounded switch - unlike traditional boost controllers with high-side switches. The datasheet explicitly states this capability in the "Detailed Description" section. However, external components (transformer, additional capacitor, diode routing) must be selected per topology requirements, and loop compensation differs significantly from standard boost. The MAX15032ATA+T's current-mode architecture remains fully functional, but output voltage equations and stability analysis must follow SEPIC/flyback design rules - not boost-derived formulas.
What is the minimum startup input voltage for the MAX15032ATA+T at full load?
The minimum startup input voltage for the MAX15032ATA+T depends on output load and target VOUT. At 20mA load and 30V output, the typical minimum startup voltage is 2.55V (per Figure MAX15032 toc06). This value increases slightly with higher output current or voltage due to UVLO hysteresis (100mV) and internal charge-pump overhead. For reliable cold-crank operation down to 6V battery, the MAX15032ATA+T's 2.375V UVLO threshold ensures functionality even during severe automotive cranking events - a key differentiator versus non-automotive boost converters.
MAX15032ATA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-WDFN 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):
- 2.7V
- Voltage - Input (Max):
- 11V
- Voltage - Output (Min/Fixed):
- 3.7V
- Voltage - Output (Max):
- 36V
- Current - Output:
- 1A (Switch)
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN (3x3)
MAX15032ATA+T FAQ
1.How can I place an order for MAX15032ATA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX15032ATA+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 MAX15032ATA+T reliable?
The price and inventory of MAX15032ATA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX15032ATA+T is usually 5 days.
3.What payment methods are accepted for MAX15032ATA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX15032ATA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX15032ATA+T?
MAX15032ATA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX15032ATA+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 MAX15032ATA+T?
For technical support, including MAX15032ATA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX15032ATA+T requirements.
6.How does Aetrix verify that MAX15032ATA+T is sourced from the original manufacturer or authorized distributors?
All MAX15032ATA+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 MAX15032ATA+T meets industry standards.
7.What is the process for return or replacement of MAX15032ATA+T?
All MAX15032ATA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX15032ATA+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 MAX15032ATA+T part is unused and in its original packaging.
Return procedure for MAX15032ATA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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