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Analog Devices Inc./Maxim Integrated MAX5087BATE/V+
- Part No.:
- MAX5087BATE/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX5087BATE/V+.pdf
- Description:
- IC REG LIN POS ADJ 400MA 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:179
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Product details
Overview
MAX5087BATE/V+ from Maxim Integrated is a high-voltage linear regulator delivering a fixed 5.0V output at up to 400mA, operating from 6.5V to 45V input, with 70μA quiescent current and integrated open-drain μP reset output. It features remote sense capability, thermal shutdown, short-circuit protection, and operates across the automotive temperature range (−40°C to +125°C) in a thermally enhanced 16-pin TQFN package.
For engineers reviewing the MAX5087BATE/V+ datasheet, MAX5087BATE/V+ pinout, MAX5087BATE/V+ application, or MAX5087BATE/V+ equivalent, this page provides verified functional identity, validated pin roles, confirmed thermal and electrical specifications, and real-world design context for automotive power management, industrial control, and safety-critical embedded systems.
Technical Context
The MAX5087BATE/V+ implements a BiCMOS-based linear regulation architecture with internal error amplifier, reference voltage (1.235V), and pass transistor control logic. Its dual-mode feedback supports fixed 5.0V output (SET grounded) or adjustable 2.5V–11V operation via external resistor divider.
It integrates a precision reset supervisor with 92% VOUT threshold hysteresis (2% of VOUT), programmable timeout via CT pin (2µA charge current), and EN-controlled startup/shutdown sequencing. Thermal protection activates at TJ = +175°C with 25°C hysteresis, and short-circuit current limiting is guaranteed for VIN < 14V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6.5V to 45V - supports wide-range industrial and automotive battery inputs including 12V, 24V, and 36V nominal systems. |
| Output Voltage | Fixed 5.0V ±1.3% (4.87V–5.13V) - tightly regulated for microcontroller core/logic supply with load/line regulation ≤ ±1 mV/V. |
| Max Output Current | 400mA - guaranteed continuous output under thermal limits; derated above TA = +70°C (2.666W @ 70°C, 33.3mW/°C derating). |
| Quiescent Current | 70μA (no load) - enables low-power always-on subsystems; drops to 11μA in shutdown mode. |
| Dropout Voltage | 0.9V (typ) at 400mA - allows operation with minimal VIN–VOUT margin, e.g., 5.9V min input for stable 5.0V output. |
| Reset Threshold | 92% of VOUT (±2%) - asserts RESET when output falls below ~4.6V; ensures reliable microprocessor reset before brownout. |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and harsh-environment control units. |
Pinout & Package
MAX5087BATE/V+ is housed in a 16-pin thermally enhanced TQFN-EP (exposed paddle) package (package code T1655+3), with θJA = 30.0°C/W and θJC = 2°C/W. The exposed paddle must be soldered to a large ground plane for optimal thermal performance (2.6W dissipation at TA = +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 12–16 | N.C. | No internal connection - electrically isolated; no routing or termination required. |
| 2 | EN | Logic-level enable input - drive ≥2.4V to activate regulator; ≤0.4V to enter 11μA shutdown mode. |
| 3, 4 | IN | Main input supply - accepts 6.5V–45V; requires 47μF low-ESR capacitor to GND for stability. |
| 5, 6 | OUT | Regulated 5.0V output - delivers up to 400mA; requires ≥15μF low-ESR capacitor to GND. |
| 7 | OUTSENSE | Remote sense feedback point - connected directly to OUT for fixed 5.0V operation; left open for adjustable mode. |
| 8 | GND | Analog/digital ground reference - common return for IN, OUT, SET, CT, RESET, and EP. |
| 9 | SET | Feedback setpoint input - grounded for 5.0V fixed output; connects to resistive divider for adjustable mode (VSET = 1.235V). |
| 10 | RESET | Open-drain active-low reset output - sinks current when VOUT drops below threshold; requires external pullup (e.g., 10kΩ to 5V). |
| 11 | CT | Reset timeout capacitor connection - 2µA internal current charges external capacitor to set tRP = CCT × 0.6175 × 10⁶ s. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode output configuration | Fixed 5.0V (SET = GND) or adjustable 2.5V–11V (external R-divider) - eliminates need for separate regulators in multi-rail designs. |
| Integrated μP reset with programmable timeout | CT pin enables precise reset hold time (e.g., 100ms with 162nF); avoids spurious resets during power-up/down transients. |
| Remote load sensing (OUTSENSE) | Compensates for IR drop in PCB traces/wiring - maintains ±1.3% output accuracy at point-of-load for critical 5.0V logic rails. |
| Thermal and short-circuit protection | Auto-shutdown at TJ = +175°C with 25°C hysteresis; indefinite short-circuit survival below VIN = 14V - enhances system reliability without external circuitry. |
| Low-quiescent-current operation | 70μA no-load IQ enables >10-year battery life in always-on monitoring circuits (e.g., vehicle intrusion detection, fire alarm sensors). |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Power Supply |
|---|---|
Use Scenario: Powering microcontrollers, CAN transceivers, and sensor interfaces in door modules, lighting controllers, and seat control units. IC Role / Device Role / Timing Role: Primary 5.0V LDO supplying logic and interface ICs; RESET output sequences MCU boot after battery wake-up. Use Value: Wide 6.5V–45V input handles cold-crank (6.5V) and load-dump (45V) events; −40°C to +125°C rating ensures operation in engine bay environments. |
Use Scenario: Providing stable 5.0V rail for digital I/O expansion cards, analog front-ends, and fieldbus communication ICs in programmable logic controllers. IC Role / Device Role / Timing Role: Local point-of-load regulator with remote sense; RESET monitors VOUT integrity and triggers controller fault response on undervoltage. Use Value: 400mA output supports multiple downstream loads; thermal enhancement sustains full current at 70°C ambient without heatsink. |
| Home Security Panel Power Management | Networking Equipment Auxiliary Supply |
Use Scenario: Powering ARM Cortex-M based security processors, cellular modems, and tamper-detection sensors in smart alarm panels. IC Role / Device Role / Timing Role: Always-on 5.0V regulator with ultra-low 70μA IQ; RESET asserts during AC power loss to initiate backup battery switchover and graceful shutdown. Use Value: Shutdown current of 11μA extends lithium primary battery life beyond 5 years; robust ESD tolerance protects against installation handling. |
Use Scenario: Generating clean 5.0V for PHYs, management microcontrollers, and LED indicators in PoE-powered switches and gateways. IC Role / Device Role / Timing Role: Secondary LDO post-regulator; uses EN to synchronize with main DC-DC enable sequence and RESET to validate upstream supply health. Use Value: PSRR of 70dB at 100Hz suppresses switching noise from primary converters; 0.9V dropout enables efficient use of intermediate bus voltages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage linear regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2940T-5.0/NOPB | Fixed 5.0V, 1A output; higher IQ (10mA), wider dropout (0.5V @ 100mA), no RESET or SET functionality. | Lacks integrated reset supervision and remote sense; suitable only where supervisory features are handled externally. | Choose when higher output current is needed and system already includes discrete reset IC or supervisor. |
| LT3080IM#PBF | Adjustable 0–36V output; 1.1A current; 1.2V reference; no preset voltage, no RESET, no CT-programmable timeout. | Requires external components for reset generation and voltage setting; lacks automotive temp grade (−40°C to +125°C). | Prefer for lab-grade or non-automotive designs requiring variable output and higher current, but accept added BOM complexity. |
Compared with LM2940T-5.0/NOPB and LT3080IM#PBF, the MAX5087BATE/V+ uniquely combines automotive-grade 5.0V regulation, integrated programmable reset, remote sensing, and ultra-low quiescent current-enabling single-chip power and supervision in space-constrained, safety-critical embedded systems without external support circuitry.
Availability
MAX5087BATE/V+ is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power rails, and home security panel designs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX5087BATE/V+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX5087 series was designed specifically for high-input-voltage, low-quiescent-current linear regulation in automotive and industrial environments-delivering integrated reset supervision, thermal resilience, and remote sensing in compact TQFN packages.
FAQ
What is the exact output voltage tolerance of the MAX5087BATE/V+ under full load and temperature?
The MAX5087BATE/V+ guarantees a 5.0V output with ±2.6% total tolerance over temperature and load: 4.87V to 5.13V (min/max) at 5mA ≤ IOUT ≤ 400mA and 6.5V ≤ VIN ≤ 25V, and 4.85V to 5.15V at 5mA ≤ IOUT ≤ 100mA and 6.5V ≤ VIN ≤ 45V. This includes line, load, and temperature effects per the datasheet's Electrical Characteristics table.
Can the MAX5087BATE/V+ be used in adjustable-output mode, and what is the minimum external component count?
Yes, the MAX5087BATE/V+ supports adjustable output from 2.5V to 11V by connecting an external resistive divider between OUTSENSE, SET, and GND. Minimum component count is two resistors (R1, R2), with R2 < 100kΩ and VSET = 1.235V. No additional capacitors or ICs are required-the internal reference and error amplifier handle full regulation.
How is the reset timeout period calculated for the MAX5087BATE/V+ using the CT pin?
The reset timeout period tRP for the MAX5087BATE/V+ is calculated as tRP = CCT × 0.6175 × 10⁶ seconds, where CCT is the capacitance (in farads) connected from CT to GND. For example, a 100nF capacitor yields tRP ≈ 61.75ms. The internal 2µA CT charging current is factory-trimmed and specified over −40°C to +125°C.
Does the MAX5087BATE/V+ require an output capacitor, and what are the stability requirements?
Yes, the MAX5087BATE/V+ requires a minimum 15μF low-ESR output capacitor (ESR < 0.25Ω) for stability across −40°C to +125°C and up to 400mA load. X7R/X5R ceramic capacitors meet this requirement; Y5V types need ≥22μF to maintain stability below −10°C. Larger values (e.g., 22μF–47μF) improve transient response and PSRR.
Is the exposed paddle (EP) of the MAX5087BATE/V+ package required to be connected to ground?
Yes, the exposed paddle (EP) of the MAX5087BATE/V+ TQFN package must be soldered to a large PCB ground plane to achieve rated thermal performance (θJA = 30.0°C/W). It is not an electrical ground connection-do not route signals or connect it to any net other than GND-and must not be used as the sole ground path for high-current return paths.
MAX5087BATE/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 2.5V (5V)
- Voltage - Output (Max):
- 11V
- Voltage Dropout (Max):
- 2.2V @ 400mA
- Current - Output:
- 400mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (100Hz)
- Control Features:
- Enable, Reset
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (5x5)
MAX5087BATE/V+ FAQ
1.How can I place an order for MAX5087BATE/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX5087BATE/V+ 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 MAX5087BATE/V+ reliable?
The price and inventory of MAX5087BATE/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX5087BATE/V+ is usually 5 days.
3.What payment methods are accepted for MAX5087BATE/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX5087BATE/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX5087BATE/V+?
MAX5087BATE/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX5087BATE/V+ 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 MAX5087BATE/V+?
For technical support, including MAX5087BATE/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX5087BATE/V+ requirements.
6.How does Aetrix verify that MAX5087BATE/V+ is sourced from the original manufacturer or authorized distributors?
All MAX5087BATE/V+ 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 MAX5087BATE/V+ meets industry standards.
7.What is the process for return or replacement of MAX5087BATE/V+?
All MAX5087BATE/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX5087BATE/V+, 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 MAX5087BATE/V+ part is unused and in its original packaging.
Return procedure for MAX5087BATE/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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