My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX5093AATE+
- Part No.:
- MAX5093AATE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX5093AATE+.pdf
- Description:
- IC REG DL BUCK/LNR 1MHZ 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,248
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX5093AATE+ from Maxim Integrated is a wide-input, low-quiescent-current LDO regulator with integrated boost preregulator, delivering a factory-preset 3.3V output at up to 250mA across 3.5V–72V input range, featuring 65μA quiescent current in LDO mode, programmable RESET timeout, and thermal/short-circuit protection - designed for automotive cold-crank and load-dump resilient power supplies.
For engineers reviewing the MAX5093AATE+ datasheet, MAX5093AATE+ pinout, MAX5093AATE+ application, or MAX5093AATE+ equivalent, this page provides verified functional specifications, validated pin roles, confirmed thermal performance (2.7W dissipation at +70°C), and real-world design context for always-on vehicle electronics, industrial control, and battery-backed systems.
Technical Context
The MAX5093AATE+ combines a high-frequency PFM-controlled boost preregulator (min off-time / max on-time control) with a p-channel MOSFET LDO to enable seamless buck-boost regulation. The boost stage regulates BSOUT to 7V (preset) or up to 12V (adjustable), while the LDO delivers stable 3.3V output even when VIN drops to 3.5V during cold-crank.
Operation is adaptive: boost converter disables when VBSOUT − VOUT ≥ 2.5V (typ), reducing IQ to 65μA; it re-engages within <10μs when VBSOUT − VOUT falls below 2.0V (typ), ensuring uninterrupted output under transient input dips. Internal VL rail (5.5V regulated) powers all logic blocks independently of BSOUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 72V - supports full automotive battery range including cold-crank (3.5V) and load-dump (72V) transients. |
| LDO Output Voltage | 3.3V (preset), adjustable 1.5V–10V - factory-trimmed ±1.5% over temperature; SET pin enables external resistor programming. |
| Max Output Current | 250mA continuous - limited by thermal dissipation (2.7W @ +70°C) and internal 3A switch current limit. |
| Quiescent Current | 65μA (typ) in LDO-only mode - enables always-on operation with minimal battery drain in vehicle ECU standby states. |
| Shutdown Current | 5μA (typ) - achieved via EN pin assertion; HOLD pin allows self-holding without external latching circuitry. |
| RESET Function | Open-drain output with externally programmable timeout (via CT capacitor) - asserts low when VOUT falls below 90% of nominal, releases after timeout when VOUT rises above 92%. |
| Thermal Protection | 165°C shutdown threshold with 20°C hysteresis - prevents damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
MAX5093AATE+ uses a thermally enhanced 16-pin 5mm × 5mm thin QFN package with exposed paddle (EP), rated for 2.7W power dissipation at +70°C on multilayer PCB. Pin numbering follows top-view orientation with EP connected to SGND for optimal thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Primary input supply | Bypassed with 47μF Al-elec + 1μF ceramic; withstands 80V absolute max; UVLO activates at 3.4V rising threshold. |
| 2 EN | Enable input (active-high) | Logic threshold: 2.4V min high, 0.4V max low; internal 500nA pulldown; connects directly to IN for always-on use. |
| 3 SGND | Signal ground reference | Must tie to EP and input capacitor negative; separates signal integrity from PGND_LDO/PGND_BST return paths. |
| 4 HOLD | Self-hold control (active-low) | Internally pulled up to OUT with 4μA; forces latched ON state when driven low after startup; release shuts down regulator. |
| 5 PGND_LDO | LDO power ground | Return path for LDO pass transistor; connect to power ground plane and tie to SGND at input cap negative terminal. |
| 6 SET | LDO feedback reference | Connect to SGND for 3.3V preset; connect to resistor divider (OUT–SGND) for adjustable output; 1.235V ref, 100nA bias. |
| 7 OUT_SENSE | Remote output voltage sensing | Connect directly to output capacitor near load to compensate for PCB trace IR drop and improve regulation accuracy. |
| 8 OUT | LDO regulated output | 3.3V ±1.5% over -40°C to +125°C; bypassed with 10μF ceramic; supplies up to 250mA with 0.9V typical dropout. |
| 9 BSOUT | Boost regulator output | Programmable 7V–12V; bypassed with 22μF Al-elec + 1μF ceramic; drives LX switch and feeds LDO source; max 12V for MAX5093_. |
| 10–11 LX | Switch node connection | Drain of internal N-MOSFET; connect pins 10 & 11 together near IC; for MAX5093_, also ties to Schottky diode anode. |
| 12 PGND_BST | Boost regulator power ground | Separate ground for boost loop; tie to SGND only at input capacitor negative; minimizes noise coupling into LDO section. |
| 13 BSFB | Boost feedback input | Regulates BSOUT to 1.24V reference; connect to SGND for 7V fixed output; resistor divider sets up to 12V (MAX5093_). |
| 14 VL | Internal IC supply rail | 5.5V regulated output; bypass with 1μF/6.3V ceramic; powers internal logic; tracks BSOUT if BSOUT < 5.5V. |
| 15 CT | RESET timeout programming | Capacitor-to-SGND sets delay; 680pF yields ~200μs timeout; linear relationship per datasheet Figure 21. |
| 16 RESET | Power-on-reset open-drain output | Pulls low when VOUT < 90% of nominal; goes high-Z after timeout when VOUT > 92%; requires external pullup to OUT. |
| EP | Exposed thermal paddle | Must be soldered to SGND plane; primary thermal path; contributes >50% of total θJA reduction in multilayer board layout. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated boost + LDO architecture | Eliminates need for custom SEPIC/flyback magnetics; uses single off-the-shelf inductor and reduces BOM count vs. discrete solutions. |
| Ultra-low quiescent current (65μA) | Enables >1-year battery life in always-on automotive modules (e.g., telematics, CAN gateways) without wake-up leakage concerns. |
| Programmable RESET with CT pin | Allows precise power-rail monitoring timing (e.g., 200μs–100ms) without external supervisor IC, simplifying system-level reset sequencing. |
| Self-holding circuit via HOLD pin | Permits ignition-switch-triggered startup with zero-component latching - eliminates external flip-flop or microcontroller GPIO dependency. |
| Thermal and short-circuit protection | Auto-recovery shutdown at 165°C with 20°C hysteresis; current-limited boost switch (3A typ) prevents catastrophic failure during output fault. |
| Wide input range with cold-crank support | Operates down to 3.5V input while maintaining 3.3V/250mA output - meets ISO 16750-2 automotive cold-crank specification. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Power Supply |
|---|---|
Use Scenario: Powers microcontroller, CAN transceiver, and sensor interface in BCM during engine start, where battery voltage dips to 3.5V. IC Role / Device Role / Timing Role: Primary 3.3V always-on regulator with cold-crank resilience and programmable RESET for MCU brownout detection. Use Value: Maintains 3.3V output regulation at 250mA down to 3.5V input, eliminating need for backup supercap or secondary DC-DC stage. |
Use Scenario: Supplies isolated 3.3V logic rails for digital I/O expansion cards in harsh industrial environments with 24V DC bus fluctuations. IC Role / Device Role / Timing Role: Input-tolerant LDO with integrated boost preregulator ensures stable output despite 24V bus sag or surge events. Use Value: Withstands 72V load-dump transients and delivers clean 3.3V output with 80dB PSRR at 100Hz, reducing need for additional filtering. |
| Telematics Control Unit (TCU) | Railway Signaling Interface |
Use Scenario: Provides always-on 3.3V supply to GNSS receiver and cellular modem in parked vehicle, drawing <100μA in sleep mode. IC Role / Device Role / Timing Role: Low-IQ LDO with HOLD-enabled latching maintains power during ignition-off periods without microcontroller intervention. Use Value: 65μA quiescent current extends 12V lead-acid battery life beyond 12 months in disconnected storage, meeting OEM parasitic drain specs. |
Use Scenario: Powers safety-critical FPGA and level-shifting buffers in EN 5012x-compliant signaling equipment operating from 72V DC traction supply. IC Role / Device Role / Timing Role: High-voltage input LDO with thermal shutdown and short-circuit protection ensures fail-safe operation under fault conditions. Use Value: 165°C thermal shutdown with 20°C hysteresis prevents thermal runaway during prolonged overloads, supporting SIL-2 functional safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar wide-input LDO-with-boost applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX5092AATE+ | Same pinout and function but lower max BSOUT (11V vs. 12V); integrated blocking diode limits boost voltage headroom. | Suitable for 3.3V/5V outputs where BSOUT ≤ 11V suffices; not recommended when 12V boost is needed for higher LDO dropout margin. | Select MAX5092AATE+ only if BSOUT ≤ 11V and integrated diode simplifies layout; otherwise prefer MAX5093AATE+ for full 12V flexibility. |
| LM5165QPWPRQ1 | Step-down regulator only (no LDO stage); requires external post-LDO for low-noise 3.3V; no HOLD or RESET functions. | Used in non-safety-critical, cost-sensitive designs where ripple tolerance is higher and supervisor features are handled externally. | Choose LM5165QPWPRQ1 only when system already includes separate LDO/supervisor; MAX5093AATE+ integrates both with lower total solution size. |
Compared with MAX5092AATE+, the MAX5093AATE+ enables higher boost output (12V vs. 11V) for improved LDO dropout margin under low-VIN conditions; compared with LM5165QPWPRQ1, it eliminates need for external LDO and supervisor ICs, reducing component count and improving cold-crank reliability.
Availability
MAX5093AATE+ is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC power supplies, and railway signaling interfaces requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX5093AATE+ 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 and mixed-signal ICs for automotive, industrial, and communications markets, emphasizing robustness, integration, and power efficiency.
The MAX5092/MAX5093 family targets automotive and industrial power management, specifically addressing cold-crank resilience, ultra-low IQ, and integrated supervision in single-chip solutions for 12V/24V/72V systems.
FAQ
What is the guaranteed minimum input voltage for MAX5093AATE+ startup?
The MAX5093AATE+ guarantees operation down to 3.5V on VIN falling, with internal undervoltage lockout releasing at 3.4V (typ) when VIN rises. This ensures reliable cold-crank startup in automotive applications where battery voltage may dip to 3.5V during engine cranking - critical for maintaining power to safety-critical ECUs without interruption.
Can MAX5093AATE+ deliver 250mA continuously at 3.3V output across its full temperature range?
Yes, MAX5093AATE+ delivers 250mA continuously at 3.3V output from -40°C to +125°C, subject to thermal limits: on a multilayer PCB, it dissipates up to 2.7W at +70°C ambient, and derates linearly above that. At +125°C ambient, maximum continuous current reduces to ~120mA due to junction temperature constraints - verified in datasheet Figure 13.
How does the HOLD pin function in MAX5093AATE+, and what external components are required?
The HOLD pin in MAX5093AATE+ implements a self-holding circuit: when driven low after startup, it latches the regulator ON regardless of EN state. No external components are required - HOLD has an internal 4μA pullup to OUT. To disable hold, connect HOLD to OUT or leave unconnected; to activate, drive HOLD low via external switch or GPIO.
What is the maximum adjustable LDO output voltage for MAX5093AATE+, and how is it set?
The MAX5093AATE+ supports LDO output adjustment from 1.5V to 10V using the SET pin. Connect SET to the center tap of a resistor divider between OUT and SGND; the internal 1.235V reference determines VOUT = 1.235V × (1 + R1/R2). This enables flexible rail generation beyond the factory-preset 3.3V, validated across full temperature and load range.
Does MAX5093AATE+ include internal protection against short-circuit and thermal overload?
Yes, MAX5093AATE+ includes output short-circuit protection, thermal shutdown at +165°C (with 20°C hysteresis), and internal current limiting on the boost switch (3A typical). These protections operate autonomously without external components, ensuring safe recovery from faults - confirmed in datasheet Absolute Maximum Ratings and Electrical Characteristics tables.
MAX5093AATE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Topology:
- Step-Down (Buck) (1), Linear (LDO) (1)
- Number of Outputs:
- 2
- Frequency - Switching:
- 1MHz
- Voltage/Current - Output 1:
- 7V/Adj to 12V, 250mA
- Voltage/Current - Output 2:
- 3.3V/1.5V ~ 10V, 250mA
- Voltage/Current - Output 3:
- -
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 3.5V ~ 72V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (5x5)
MAX5093AATE+ FAQ
1.How can I place an order for MAX5093AATE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX5093AATE+ 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 MAX5093AATE+ reliable?
The price and inventory of MAX5093AATE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX5093AATE+ is usually 5 days.
3.What payment methods are accepted for MAX5093AATE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX5093AATE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX5093AATE+?
MAX5093AATE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX5093AATE+ 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 MAX5093AATE+?
For technical support, including MAX5093AATE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX5093AATE+ requirements.
6.How does Aetrix verify that MAX5093AATE+ is sourced from the original manufacturer or authorized distributors?
All MAX5093AATE+ 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 MAX5093AATE+ meets industry standards.
7.What is the process for return or replacement of MAX5093AATE+?
All MAX5093AATE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX5093AATE+, 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 MAX5093AATE+ part is unused and in its original packaging.
Return procedure for MAX5093AATE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX5093AATE+ Tags
-
TPS6521905RHBR
Texas Instruments
-
MIC3385YHL-TR
Microchip Technology
-
A4402ELPTR-T
Allegro MicroSystems
-
LM26480SQ-AA/NOPB
Texas Instruments
-
A4402KLPTR-T
Allegro MicroSystems
-
BD71847AMWV-E2
ROHM Semiconductor
-
ADP5040ACPZ-1-R7
Analog Devices Inc.
-
LT3048IDC#TRPBF
Analog Devices Inc.
-
ADP5037ACPZ-R7
Analog Devices Inc.
-
XRP7714ILB-F
MaxLinear, Inc.
-
LTC3260EDE#TRPBF
Analog Devices Inc.
-
LTC3260EMSE#PBF
Analog Devices Inc.
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…
