My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX16823ATE+
- Part No.:
- MAX16823ATE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- LED Drivers
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX16823ATE+.pdf
- Description:
- IC LED DRVR LIN PWM 100MA 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,470
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX16823ATE+ from Maxim Integrated is a high-voltage, 3-channel linear LED driver IC designed for automotive exterior lighting. It operates from 5.5V to 40V input, delivers up to 100mA per channel with ±5% current accuracy, and integrates open-drain LEDGOOD fault reporting. It is used in rear combination lights (RCLs) and CHMSL systems requiring load-dump tolerance up to 45V.
For engineers reviewing the MAX16823ATE+ datasheet, MAX16823ATE+ pinout, MAX16823ATE+ application, or MAX16823ATE+ equivalent, key selection criteria include its three independent DIM inputs for pulsed dimming, integrated 3.4V/4mA regulator, thermal shutdown at +155°C, and support for -40°C to +125°C automotive operation.
Technical Context
The MAX16823ATE+ uses a linear current-regulation architecture with internal pass transistors and fixed 203mV current-sense reference voltage. Each channel employs independent feedback loops comparing CSx voltage against this reference to maintain constant output current across varying LED forward voltages.
It implements analog/digital hybrid dimming control: DIM inputs serve as logic-level enables and low-frequency PWM inputs (0–3kHz), while wave-shaping circuitry minimizes EMI during fast turn-on/turn-off transitions (12µs turn-on, 8µs turn-off). The LEDGOOD output responds to open-LED faults or prolonged DIM low states via programmable delay set by external LGC capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.5V to 40V - supports wide automotive battery range including cold-crank and load-dump transients up to 45V |
| Max Output Current per Channel | 100mA - sufficient for driving multiple HB LEDs in series or parallel strings |
| Current Accuracy | ±5% - ensures consistent brightness across channels and temperature (-40°C to +125°C) |
| DIM Input Frequency Range | 0 to 3kHz - enables flexible low-frequency PWM dimming without audible noise |
| Dropout Voltage | 0.7V max at 70mA - minimizes power loss and heat generation in linear regulation |
| CS Reference Voltage | 203mV ±10mV - precise, factory-trimmed sense threshold enabling accurate current programming |
| Thermal Shutdown Threshold | +155°C with 23°C hysteresis - provides robust self-protection during overload or short-circuit conditions |
| REG Output | 3.4V ±5%, 4mA - powers auxiliary circuitry (e.g., timers, comparators) without external LDO |
Pinout & Package
MAX16823ATE+ is packaged in a thermally enhanced 5mm × 5mm, 16-pin TQFN-EP (exposed pad) with lead(Pb)-free/RoHS-compliant finish. The exposed pad must be soldered to a large-area ground plane for effective thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DIM1, DIM2, DIM3 (Pins 1, 2, 3) | Independent dimming enable inputs | Logic-high enables corresponding channel; supports pulsed dimming up to 3kHz and open-LED fault detection via timeout |
| LEDGOOD (Pin 4) | Open-drain fault indicator | Active-low signal asserts when any channel detects open LED or DIM remains low beyond programmed LGC delay |
| IN (Pins 5, 6, 7) | Positive supply input | Three parallel pins reduce IR drop and improve thermal performance; requires ≥0.1µF bypass capacitor to GND |
| LGC (Pin 8) | LED fault timing capacitor node | External capacitor sets LEDGOOD delay time (tDELAY = 4–6 × 112,000 × CLGC); minimum 100pF recommended |
| REG (Pin 9) | Integrated 3.4V regulator output | Supplies up to 4mA for biasing external components; shorting REG to GND disables thermal shutdown |
| GND (Pin 10) | Power and signal reference | Primary ground return; low-side connection point for all CS resistors and bypass capacitors |
| CS3, CS2, CS1 (Pins 11, 12, 13) | Current-sense amplifier inputs | Connect external resistor between each CSx and GND to program channel current (IOUT = 0.203V / RCS) |
| OUT3, OUT2, OUT1 (Pins 14, 15, 16) | Linear current-regulated outputs | High-side outputs drive LED anodes; each features low-dropout pass element (0.7V max) and short-circuit protection |
Key Features
| Feature | Design Value |
|---|---|
| Three integrated linear pass elements | Eliminates need for external MOSFETs or BJTs in most HB LED applications, reducing BOM count and layout area |
| ±5% LED current accuracy over temperature | Ensures consistent luminance across automotive ambient conditions without calibration or trimming |
| Programmable LED fault detection delay | Configurable via single external capacitor on LGC pin, enabling system-specific fault response timing |
| Integrated 3.4V/4mA regulator | Powers external timing ICs (e.g., ICM7555) or level-shifters directly, removing need for discrete LDO |
| Load-dump tolerant to 45V | Meets ISO 7637-2 Pulse 5a requirements for automotive 12V systems without external TVS clamping |
| Fast 12µs turn-on / 8µs turn-off | Enables crisp PWM dimming and rapid fault response, critical for brake light strobing and signaling |
Applications
| Rear Combination Lights (RCLs) | CHMSL (Center High-Mount Stop Light) |
|---|---|
Use Scenario: Driving sequential turn signals and dual-intensity tail/stop functions in automotive rear lamp assemblies. IC Role / Device Role / Timing Role: Linear current regulator providing independent, dimmable 100mA outputs per channel for red/amber LED strings. Use Value: Enables precise brightness matching between tail (low-current) and stop (full-current) modes using same hardware, reducing SKU count. | Use Scenario: Powering high-brightness LED arrays in center-mounted brake lights requiring fast response and thermal resilience. IC Role / Device Role / Timing Role: Constant-current source with thermal shutdown and open-LED detection for fail-safe operation. Use Value: Guarantees immediate fault indication via LEDGOOD signal during LED string failure, meeting ASIL-B functional safety expectations. |
| RGB Ambient Interior Lighting | Emergency Vehicle Warning Lights |
Use Scenario: Controlling red/green/blue LED channels for dynamic cabin mood lighting with independent intensity tuning. IC Role / Device Role / Timing Role: Triple-channel dimming controller with separate DIM inputs enabling synchronized or asynchronous color mixing. Use Value: Supports smooth 0–100% analog-style dimming via PWM without color shift, leveraging matched ±5% current accuracy across channels. | Use Scenario: Driving high-intensity flashing LED arrays in police, fire, and ambulance light bars subject to vibration and wide temperature swings. IC Role / Device Role / Timing Role: Robust linear driver with 45V load-dump immunity and -40°C to +125°C operation. Use Value: Eliminates external surge protection components while maintaining stable current under harsh electrical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-channel linear LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX16823AUE+ | Same silicon die, but in 16-pin TSSOP-EP package - larger footprint, lower thermal performance (2088.8mW vs. 2666mW @ +70°C) | Preferred for legacy PCBs with TSSOP land patterns or where thermal demand is lower | Select MAX16823AUE+ only if TQFN assembly capability is unavailable; thermal derating required above +70°C ambient |
| TPS92630QPWPRQ1 | Three-channel linear LED driver with similar 5.5–40V range, but includes built-in PWM-to-analog converter and higher 150mA/channel rating | Better suited for systems requiring analog dimming control without external PWM generators | Choose TPS92630QPWPRQ1 when integrating with microcontroller PWM outputs or needing >100mA per channel; not pin-compatible |
Compared with MAX16823ATE+, the MAX16823AUE+ offers identical functionality in a less thermally efficient package, while the TPS92630QPWPRQ1 adds analog dimming capability and higher current but requires different layout and control interface design.
Availability
MAX16823ATE+ is available at Aetrix Electronics and suitable for automotive exterior lighting, interior ambient lighting, and emergency warning systems requiring stable component supply, extended temperature operation, and AEC-Q100-aligned reliability.
Supply support for MAX16823ATE+ 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 MAX16823ATE+ belongs to Maxim's automotive-grade LED driver product line, engineered specifically for high-reliability, high-voltage exterior lighting applications demanding load-dump resilience, open-LED diagnostics, and wide temperature operation.
FAQ
What is the maximum input voltage the MAX16823ATE+ can withstand during load-dump events?
The MAX16823ATE+ is rated to withstand load-dump transients up to 45V, exceeding the ISO 7637-2 Pulse 5a requirement for 12V automotive systems. This allows direct connection to vehicle battery rails without external TVS diodes in most implementations. The absolute maximum IN-to-GND rating is +45V, and operation remains functional within the 5.5V–40V specified range. Always verify system-level clamping margins in final design validation.
How is LED current programmed on each channel of the MAX16823ATE+?
LED current per channel is programmed by connecting an external resistor between the respective CSx pin (CS1, CS2, or CS3) and GND. The regulated current follows IOUT = 0.203V / RCS, where 0.203V is the factory-trimmed current-sense reference voltage. For example, a 2.85Ω resistor sets 71.2mA per channel. The MAX16823ATE+ supports 5mA to 100mA per channel, with ±5% accuracy over temperature and line.
Does the MAX16823ATE+ support PWM dimming, and what is its frequency limit?
Yes, the MAX16823ATE+ supports pulsed dimming via its three independent DIM inputs, with a specified frequency range of 0 to 3kHz. Each DIM input acts as both an enable and a PWM control signal: logic-high enables the channel, and duty-cycle modulation adjusts brightness. The device achieves fast switching (12µs turn-on, 8µs turn-off), enabling clean, flicker-free dimming even at low frequencies suitable for automotive signaling.
What is the purpose of the LGC pin on the MAX16823ATE+, and how is it configured?
The LGC pin on the MAX16823ATE+ sets the delay time for the LEDGOOD open-LED fault indicator. A capacitor connected from LGC to GND determines tDELAY using tDELAY = (4–6) × 112,000 × CLGC. For example, a 15nF capacitor yields ~6.7–10ms delay. This allows system designers to avoid false fault triggers during brief power interruptions or startup. Minimum recommended CLGC is 100pF; values below degrade timing accuracy.
Can the MAX16823ATE+ drive more than 100mA per channel, and if so, how?
Yes, the MAX16823ATE+ can drive up to 2A per channel when used with an external BJT configured as a current booster, as documented in the datasheet's Figure 5. In this configuration, the MAX16823ATE+ regulates base current of the external transistor, which handles the bulk LED current. This extends usable range beyond the native 100mA limit while retaining accuracy and protection features - though thermal design and PCB layout must accommodate the added dissipation of the external device.
MAX16823ATE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Linear
- Topology:
- -
- Internal Switch(s):
- Yes
- Number of Outputs:
- 3
- Voltage - Supply (Min):
- 5.5V
- Voltage - Supply (Max):
- 40V
- Voltage - Output:
- 39.3V
- Current - Output / Channel:
- 100mA
- Frequency:
- -
- Dimming:
- PWM
- Applications:
- Backlight, Lighting
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (5x5)
MAX16823ATE+ FAQ
1.How can I place an order for MAX16823ATE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16823ATE+ 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 MAX16823ATE+ reliable?
The price and inventory of MAX16823ATE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16823ATE+ is usually 5 days.
3.What payment methods are accepted for MAX16823ATE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16823ATE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16823ATE+?
MAX16823ATE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16823ATE+ 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 MAX16823ATE+?
For technical support, including MAX16823ATE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16823ATE+ requirements.
6.How does Aetrix verify that MAX16823ATE+ is sourced from the original manufacturer or authorized distributors?
All MAX16823ATE+ 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 MAX16823ATE+ meets industry standards.
7.What is the process for return or replacement of MAX16823ATE+?
All MAX16823ATE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16823ATE+, 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 MAX16823ATE+ part is unused and in its original packaging.
Return procedure for MAX16823ATE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX16823ATE+ Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
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…
