My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX15009ATJ+T
- Part No.:
- MAX15009ATJ+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
MAX15009ATJ+T.pdf
- Description:
- IC REG LIN POS ADJ 300MA 32TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,714
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX15009ATJ+T from Maxim Integrated is a 300mA LDO regulator with integrated switched output and overvoltage protection (OVP) controller, designed for automotive power management. It operates from 5V to 40V input, withstands 45V load-dump transients, delivers fixed 5V LDO output (±2% over -40°C to +125°C), features 67μA quiescent current, and supports remote load control via its 0.28Ω internal n-channel switch - used in multimedia power supplies requiring robust fault protection.
For engineers reviewing the MAX15009ATJ+T datasheet, MAX15009ATJ+T pinout, MAX15009ATJ+T application, or MAX15009ATJ+T equivalent, key selection criteria include OVP configurability (switch vs. limiter mode), adjustable reset timeout via CT capacitor, programmable switch current limit (30–240mA), thermal shutdown at +160°C, and compatibility with external n-channel MOSFETs for high-voltage battery monitoring.
Technical Context
The MAX15009ATJ+T integrates three functional blocks: a precision 5V LDO (1.235V internal reference, ±1.5% FB_LDO tolerance), a current-limited switched output with accurate ILIM sensing and OC_DELAY blanking timer, and an OVP controller that drives an external n-channel MOSFET using a charge-pump GATE driver (8.1V above VIN, 63mA pulldown). All blocks share a common 32-pin TQFN-EP package and operate across -40°C to +125°C.
OVP operation is configurable: in switch mode, FB_PROT monitors drain-side voltage to disconnect loads during overvoltage; in limiter mode, SOURCE feedback enables hysteretic regulation. The LDO includes independent EN_LDO/HOLD inputs and a μP reset output with user-adjustable timeout (via CT capacitor), while the switched output supports autoretry after overcurrent events using OC_DELAY timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 5V to 40V - supports wide automotive battery range including cold-crank (5V) and load-dump (45V transient tolerant) |
| LDO Output Voltage | 5.00V ±2% (VOUT_LDO) - fixed output with 1.235V internal reference; adjustable from 1.8V to 11V via FB_LDO divider |
| Quiescent Current | 67μA at light load - enables always-on battery-powered systems without excessive standby drain |
| Switch RDS(ON) | 0.28Ω (typ) - low-loss conduction path for 100mA switched output; dropout <70mV at 100mA |
| OVP Threshold Accuracy | 1.235V ±2.5% at FB_PROT - sets precise overvoltage trip point (e.g., 35V with 28.3:1 divider); 4% hysteresis prevents chatter |
| Reset Timeout Programmability | Configurable via CT capacitor (e.g., 220pF → ~0.4ms; 2.2nF → ~1.8ms) - meets microprocessor reset timing requirements |
| Thermal Shutdown | +160°C with 20°C hysteresis - protects against sustained overload or poor PCB heatsinking in enclosed automotive modules |
Pinout & Package
MAX15009ATJ+T is housed in a thermally enhanced 32-pin TQFN-EP package (5mm × 5mm, exposed pad), optimized for automotive under-hood thermal environments. The exposed pad (EP) must be soldered to SGND for both electrical grounding and thermal dissipation (θJA = 29.0°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN (Pins 19,20) | Input Supply Rail | Accepts 5V–40V; bypassed with 10μF/ESR<1.5Ω capacitor to SGND; withstands 45V transients |
| OUT_LDO (Pins 21,22) | LDO Regulated Output | Delivers up to 300mA at 5V; requires ≥22μF ceramic output cap to SGND; supports adjustable output via FB_LDO |
| OUT_SW (Pins 27,28) | Switched Output | Current-limited path (30–240mA) driven by internal 0.28Ω n-MOSFET; bypass with ≥0.1μF ceramic cap |
| GATE (Pin 12) | OVP Gate Driver | Charge-pump output driving external n-MOSFET gate; 63mA pulldown ensures fast turn-off during overvoltage |
| SOURCE (Pin 13) | OVP Source Sense | Connects to external MOSFET source; enables limiter-mode feedback; critical for closed-loop voltage regulation |
| FB_PROT (Pin 10) | OVP Threshold Input | Resistive divider node setting overvoltage trip point; 1.235V reference with ±2.5% accuracy and 4% hysteresis |
| RESET (Pin 7) | Microprocessor Reset Output | Active-low open-drain signal asserting until VOUT_LDO exceeds 92.5% of nominal and CT timeout expires |
| CT (Pin 9) | Reset Timeout Adjust | Capacitor-connected node controlling reset assertion duration; linear relationship between CRESET and timeout |
Key Features
| Feature | Design Value |
|---|---|
| OVP Controller with Dual Mode | Configurable as load-disconnect switch (drain-sense) or closed-loop voltage limiter (source-sense) - eliminates need for separate OVP IC |
| Programmable Switch Current Limit | Set from 30mA to 240mA via resistor on ILIM pin - enables precise fault current tailoring for diverse load types |
| Adjustable Reset Timeout | Controlled by external capacitor on CT pin (0.1ms to >10ms range) - matches processor-specific reset timing requirements |
| Independent LDO Enable & Hold Logic | EN_LDO activates regulator; HOLD latches state during EN_LDO removal - supports controlled power sequencing in multi-rail systems |
| Integrated Load-Dump Protection | Withstands 45V transients per ISO 7637-2 Pulse 5a - eliminates need for external TVS diodes in many automotive designs |
Applications
| Infotainment Head Unit Power | ADAS Camera Module Supply |
|---|---|
Use Scenario: Powers DSP, display interface, and audio codec in automotive infotainment head units exposed to battery rail fluctuations and load-dump events. IC Role / Device Role / Timing Role: Provides stable 5V LDO supply, enables/disables camera sensor power via OUT_SW, and disconnects downstream circuitry during 45V transients using OVP controller. Use Value: Eliminates need for discrete OVP IC and external switch; 67μA quiescent current extends battery runtime in accessory mode. |
Use Scenario: Supplies image sensor and ISP in rear-view or surround-view cameras operating in engine bay or bumper locations. IC Role / Device Role / Timing Role: Delivers regulated 5V to sensor logic, controls power to analog front-end via switched output, and limits voltage to 35V during alternator surge using limiter-mode OVP. Use Value: Prevents sensor latch-up or damage during ISO 7637-2 Pulse 5a; thermal shutdown protects against enclosure overheating. |
| Telematics Control Unit (TCU) | Body Control Module (BCM) Subsystem |
Use Scenario: Manages power to LTE modem, GNSS receiver, and CAN transceiver in cellular-connected vehicle telematics units. IC Role / Device Role / Timing Role: Generates clean 5V rail for communication ICs, sequences modem power-up via RESET and HOLD, and isolates modem during battery overvoltage via OVP switch mode. Use Value: Ensures reliable modem boot after ignition; 92.5% reset threshold guarantees stable initialization before firmware execution. |
Use Scenario: Powers door module microcontrollers and LED drivers in body electronics, where space and thermal constraints limit discrete solutions. IC Role / Device Role / Timing Role: Supplies 5V MCU core voltage, switches 12V lighting loads via OUT_SW, and protects interior electronics from jump-start overvoltage using OVP limiter mode. Use Value: Reduces BOM count by integrating LDO, switch, and OVP; 0.28Ω RDS(ON) minimizes heat generation in sealed BCM enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX15011ATJ+T | Omits OVP controller (no GATE, SOURCE, FB_PROT pins); identical LDO and switched output functionality | Used where overvoltage protection is handled externally or unnecessary; lower cost, same footprint | Select when OVP is redundant or implemented upstream; retains full LDO/reset/switch capability in same package |
| TPS40400RHLR | Step-down controller (not LDO); requires external FETs; no integrated OVP or reset; supports higher currents (3A) | Targets high-power DC/DC conversion, not low-noise LDO regulation; lacks automotive-grade OVP and reset features | Choose only for non-LDO, high-efficiency buck conversion; not a functional substitute for MAX15009ATJ+T's integrated protection and sequencing |
Compared with MAX15011ATJ+T, the MAX15009ATJ+T adds essential OVP functionality for battery rail monitoring, while TPS40400RHLR serves a fundamentally different architecture - a controller requiring external power stage components and offering no integrated reset or low-quiescent LDO regulation.
Availability
MAX15009ATJ+T is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics control units requiring stable component supply, AEC-Q100 compliance support, and long-term production continuity.
Supply support for MAX15009ATJ+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for automotive, industrial, and communications markets.
The MAX15009ATJ+T belongs to Maxim's automotive power management product line, engineered specifically for harsh-environment vehicle subsystems requiring integrated LDO regulation, load switching, and overvoltage fault protection in a single compact package.
FAQ
What is the maximum continuous output current of the LDO in MAX15009ATJ+T?
The MAX15009ATJ+T LDO delivers up to 300mA continuously under thermal limits. Its minimum guaranteed current limit is 330mA (short-circuit condition), but sustained 300mA operation depends on PCB layout, ambient temperature, and input-to-output voltage differential - dropout voltage reaches 1.5V at 300mA, so VIN must be ≥6.5V for stable 5V output. Derating is required above +70°C ambient due to 2.7W package power dissipation limit.
How does the OVP controller in MAX15009ATJ+T operate in limiter mode versus switch mode?
In limiter mode, MAX15009ATJ+T monitors SOURCE voltage via a resistive divider to FB_PROT, enabling the external n-channel MOSFET to operate in linear regulation - clamping output voltage during overvoltage. In switch mode, FB_PROT connects to the MOSFET drain, causing full turn-off when threshold is exceeded. Limiter mode provides smoother response for sensitive loads; switch mode offers complete isolation. Both use the same 1.235V reference and 4% hysteresis.
Can MAX15009ATJ+T be used with an adjustable LDO output voltage?
Yes, MAX15009ATJ+T supports adjustable LDO output from 1.8V to 11V using an external resistor divider from OUT_LDO to SGND, with FB_LDO connected to the divider midpoint. The internal 1.235V reference sets VOUT = 1.235V × (1 + R1/R2). Minimum 1.8V ensures proper HOLD functionality per datasheet Note 2. Fixed 5V operation is selected by connecting FB_LDO directly to SGND.
What is the purpose of the OC_DELAY pin on MAX15009ATJ+T, and how is it configured?
The OC_DELAY pin on MAX15009ATJ+T programs the blanking time before overcurrent detection triggers switch shutdown. It is internally pulled to SGND with a 1µA current source. Leaving OC_DELAY unconnected selects minimum timeout (~12µs); connecting a capacitor to SGND increases delay linearly - e.g., 100pF yields ~1.2ms. This prevents false trips during inrush or transient load spikes while maintaining fast fault response.
Does MAX15009ATJ+T require external components for basic operation, and which ones are mandatory?
Yes, MAX15009ATJ+T requires several mandatory external components: a 10μF/ESR<1.5Ω capacitor from IN to SGND; ≥22μF ceramic capacitor from OUT_LDO to SGND; ≥0.1μF ceramic capacitor from OUT_SW to SGND; and a resistor from ILIM to SGND (or connection to OUT_LDO) to set switch current limit. Optional but recommended: CT capacitor for reset timeout, FB_PROT divider for OVP threshold, and OC_DELAY capacitor for overcurrent blanking.
MAX15009ATJ+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.8V, (5V)
- Voltage - Output (Max):
- 11V
- Voltage Dropout (Max):
- 1.5V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 85 µA
- Current - Supply (Max):
- 500 µA
- PSRR:
- 60dB (100Hz)
- Control Features:
- Current Limit, Enable, Hold, Reset
- Protection Features:
- Load Dump, Over Temperature, Over Voltage, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TQFN (5x5)
MAX15009ATJ+T FAQ
1.How can I place an order for MAX15009ATJ+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX15009ATJ+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 MAX15009ATJ+T reliable?
The price and inventory of MAX15009ATJ+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX15009ATJ+T is usually 5 days.
3.What payment methods are accepted for MAX15009ATJ+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX15009ATJ+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX15009ATJ+T?
MAX15009ATJ+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX15009ATJ+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 MAX15009ATJ+T?
For technical support, including MAX15009ATJ+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX15009ATJ+T requirements.
6.How does Aetrix verify that MAX15009ATJ+T is sourced from the original manufacturer or authorized distributors?
All MAX15009ATJ+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 MAX15009ATJ+T meets industry standards.
7.What is the process for return or replacement of MAX15009ATJ+T?
All MAX15009ATJ+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX15009ATJ+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 MAX15009ATJ+T part is unused and in its original packaging.
Return procedure for MAX15009ATJ+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX15009ATJ+T Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
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…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
