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Analog Devices Inc./Maxim Integrated MAX16836ASA+
- Part No.:
- MAX16836ASA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- LED Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
MAX16836ASA+.pdf
- Description:
- IC LED DRVR LIN PWM 350MA 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,600
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Product details
Overview
The MAX16836ASA+ from Maxim Integrated is a high-voltage, 350mA LED current regulator designed for automotive HB LED lighting systems. It operates from 6.5V to 40V input, delivers ±3.5% output-current accuracy via external RSENSE, integrates a 5V/4mA regulator, and supports PWM dimming through a high-voltage DIM pin. It withstands automotive load-dump transients up to 40V and features differential current sensing for noise immunity.
For engineers reviewing the MAX16836ASA+ datasheet, MAX16836ASA+ pinout, MAX16836ASA+ application, or MAX16836ASA+ equivalent, this page provides verified technical context, package-specific pin mapping, thermal performance data, real-world dimming timing (tON = 110µs, tOFF = 70µs), and validated alternatives for automotive map, tail, CHMSL, and emergency warning light designs.
Technical Context
The MAX16836ASA+ uses an internal BiCMOS pass element with low-dropout voltage (0.55V typ at 350mA) and a fixed 200mV current-sense reference (193–207mV) to regulate LED current via external RSENSE. Its differential CS+/CS− inputs reject ground-loop noise and support thermal foldback when paired with an NTC thermistor.
It integrates a standalone +5V regulator (4.85–5.20V, 4mA source) that remains active during PWM dimming but shuts down when EN is low. Thermal shutdown activates at +159°C (24°C hysteresis), and short-circuit protection sustains 60 minutes at VIN = +16V without damage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +6.5V to +40V - supports automotive battery transients including 40V load-dump events |
| Max Output Current | 350mA - adjustable via external RSENSE; enables single-string or multi-string HB LED drive |
| Current Accuracy | ±3.5% - ensures consistent brightness across temperature (-40°C to +125°C) |
| DIM Input Logic | VIL ≤ 0.6V / VIH ≥ 4V - compatible with 5V microcontrollers and automotive logic without level-shifting |
| Dropout Voltage | 0.55V (typ) at 350mA - minimizes power loss and heat generation in high-current operation |
| 5V Regulator Output | 4.85V–5.20V @ 0–4mA - powers small-signal circuitry (e.g., timers, sensors) directly from VIN |
| Shutdown Current | 35µA (typ) - reduces system standby power in always-on automotive modules |
Pinout & Package
The MAX16836ASA+ is housed in an 8-pin SO package with exposed pad (SO-EP), optimized for thermal dissipation in automotive ambient conditions (θJA = 43°C/W, θJC = 7°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Positive Input Supply | Accepts 6.5V–40V; requires ≥0.1µF bypass capacitor to GND for stability |
| 2 (CS+) | Positive Current-Sense Input | Differential input for RSENSE; rejects common-mode noise in noisy automotive environments |
| 3 (CS−) | Negative Current-Sense Input | Completes differential sense path; VCS− range: −0.3V to +4.1V |
| 4 (V5) | +5V Regulated Output | Supplies up to 4mA; stays active during PWM dimming; shorting to GND disables thermal shutdown |
| 5 (GND) | Ground Reference | Main signal and power return; EP must be connected to PCB ground plane for thermal performance |
| 6 (DIM) | PWM Dimming Control | High-voltage digital input (0.6V/4V thresholds); controls output current slew rate (7.8mA/µs) |
| 7 (EN) | Enable Input | Active-high logic; drives high to enable output; pulls low to shut down entire device (35µA ISHDN) |
| 8 (OUT) | Current-Regulated Output | Drives LED anode(s); integrated pass element eliminates need for external MOSFET |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Pass Element | Eliminates external MOSFET and gate-driver components; reduces BOM count and layout area |
| Differential Current Sense | Rejects ground-bounce and EMI-induced errors in shared-chassis automotive systems |
| Wave-Shaped Edges | Reduces radiated EMI during PWM dimming-critical for CISPR-25 Class 5 compliance |
| Parallel Operation Support | Enables >350mA LED drive by synchronizing multiple MAX16836ASA+ units without external current-sharing circuitry |
| Thermal Foldback Ready | Supports NTC-based current reduction via V5 and CS+ connections-no extra IC required |
Applications
| Automotive Interior Lighting | Automotive Exterior Lighting |
|---|---|
Use Scenario: Map and courtesy lights in vehicle cabin with 12V/24V battery supply and frequent ignition cycling. IC Role / Device Role / Timing Role: Constant-current driver regulating 100–350mA through white HB LEDs; handles cold-crank (6.5V) and load-dump (40V) events. Use Value: ±3.5% current accuracy maintains uniform brightness across temperature; 5V regulator powers local microcontroller for smart dimming control. | Use Scenario: CHMSL (Center High-Mount Stop Light) requiring dual brightness levels (tail vs. stop). IC Role / Device Role / Timing Role: PWM-dimming controller with fast turn-on (110µs) and turn-off (70µs) response for precise duty-cycle control. Use Value: High-voltage DIM pin accepts direct connection to 5V MCU GPIO; differential sensing prevents false triggering from brake-switch noise. |
| Emergency Warning Lights | Marine & Navigation Indicators |
Use Scenario: Flashing amber/red warning beacons on fire trucks or ambulances powered from 24V chassis. IC Role / Device Role / Timing Role: High-reliability current source driving parallel LED strings; thermal shutdown protects against enclosure overheating. Use Value: 8-pin SO-EP package offers robust thermal performance in sealed enclosures; 40V absolute max rating survives alternator spikes. | Use Scenario: Waterproof navigation panel indicators exposed to salt fog and wide ambient temperature swings. IC Role / Device Role / Timing Role: LED driver operating over −40°C to +125°C junction range; 5V regulator powers isolated CAN transceiver. Use Value: Guaranteed operation across full automotive temp range; differential sensing rejects EMI from nearby VHF radios. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED current regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3409QMY/NOPB | External MOSFET required; no integrated pass element; 3.3V reference instead of 200mV; no 5V regulator | Requires additional FET, gate driver, and LDO for auxiliary power; better suited for >1A designs | Select LM3409QMY/NOPB only if higher current (>500mA), external FET flexibility, or lower cost per amp is prioritized over integration and auxiliary power. |
| TPS92630QPWPRQ1 | Three-channel linear driver; 150mA/channel; built-in diagnostics; SPI interface; no 5V regulator | Designed for multi-zone interior lighting with fault reporting; not drop-in for single-string 350mA use | Choose TPS92630QPWPRQ1 when channel independence, diagnostic feedback, or ASIL-B compliance is required-otherwise MAX16836ASA+ offers simpler, more compact single-channel solution. |
Compared with LM3409QMY/NOPB and TPS92630QPWPRQ1, the MAX16836ASA+ delivers superior integration (pass element + 5V regulator), tighter current accuracy (±3.5% vs. ±5%), and automotive-grade transient tolerance in a smaller footprint-making it optimal for cost-sensitive, space-constrained, single-string HB LED applications.
Availability
The MAX16836ASA+ is available at Aetrix Electronics and suitable for automotive interior lighting, exterior CHMSL/tail lamp modules, and emergency warning beacon systems requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX16836ASA+ 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.
The MAX16836ASA+ belongs to Maxim's automotive LED driver product line, engineered specifically for high-reliability, high-voltage HB LED lighting where integration, thermal robustness, and transient immunity are critical.
FAQ
What is the maximum continuous LED current supported by the MAX16836ASA+?
The MAX16836ASA+ guarantees a regulated output current of up to 350mA under specified conditions (RSENSE = 0.55Ω, TA = −40°C to +125°C). This is its rated maximum continuous current; exceeding this value risks thermal shutdown or reduced accuracy. The device supports parallel operation to scale beyond 350mA, but each MAX16836ASA+ unit is independently limited to 350mA.
Does the MAX16836ASA+ require an external MOSFET for LED current regulation?
No, the MAX16836ASA+ integrates a pass element internally, eliminating the need for an external MOSFET. This simplifies design, reduces board space, and improves reliability. The integrated pass device delivers up to 350mA with a typical dropout voltage of 0.55V, making it suitable for high-efficiency linear LED driver applications where switching noise must be avoided.
Can the MAX16836ASA+ operate safely during automotive load-dump events?
Yes, the MAX16836ASA+ is explicitly rated to withstand automotive load-dump transients up to +40V. Its absolute maximum input rating is +45V, and its operational input range extends to +40V. This makes it suitable for direct connection to vehicle battery rails without additional transient voltage suppression-provided external capacitors meet recommended values (e.g., ≥0.1µF at IN).
What is the function of the V5 pin on the MAX16836ASA+ and how much current can it supply?
The V5 pin on the MAX16836ASA+ provides a regulated +5V output capable of sourcing up to 4mA. It remains active during PWM dimming (when DIM toggles) but shuts down when EN is pulled low. Its output voltage is tightly regulated (4.85V–5.20V) across the full input range (6.5V–40V) and temperature range (−40°C to +125°C), enabling direct powering of small-signal peripherals like timers or logic buffers.
How does the differential current-sense architecture of the MAX16836ASA+ improve system performance?
The MAX16836ASA+ uses differential CS+ and CS− inputs to measure the voltage across the external sense resistor, rejecting common-mode noise and ground-bounce interference. This significantly improves current regulation accuracy in electrically noisy automotive environments-especially when LED strings share chassis ground with motors or solenoids. The architecture also enables thermal foldback implementation using an NTC thermistor without additional op-amps.
MAX16836ASA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 6.5V
- Voltage - Supply (Max):
- 40V
- Voltage - Output:
- 39.45V
- Current - Output / Channel:
- 350mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- Lighting, Signage
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC-EP
MAX16836ASA+ FAQ
1.How can I place an order for MAX16836ASA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16836ASA+ 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 MAX16836ASA+ reliable?
The price and inventory of MAX16836ASA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16836ASA+ is usually 5 days.
3.What payment methods are accepted for MAX16836ASA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16836ASA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16836ASA+?
MAX16836ASA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16836ASA+ 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 MAX16836ASA+?
For technical support, including MAX16836ASA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16836ASA+ requirements.
6.How does Aetrix verify that MAX16836ASA+ is sourced from the original manufacturer or authorized distributors?
All MAX16836ASA+ 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 MAX16836ASA+ meets industry standards.
7.What is the process for return or replacement of MAX16836ASA+?
All MAX16836ASA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16836ASA+, 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 MAX16836ASA+ part is unused and in its original packaging.
Return procedure for MAX16836ASA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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