My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX16993ATJI+
- Part No.:
- MAX16993ATJI+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX16993ATJI+.pdf
- Description:
- IC REG BUCK ADJ/PROG TRPL 32TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,950
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX16993ATJI+ from Maxim Integrated is an AEC-Q100 qualified automotive PMIC integrating one high-voltage synchronous step-down controller (OUT1) and two cascaded low-voltage synchronous step-down converters (OUT2/OUT3), operating up to 36V input, delivering 3A per low-side output, with 30µA quiescent current and 2.1MHz switching frequency - designed for infotainment power rails in 12V/24V vehicle systems.
For engineers reviewing the MAX16993ATJI+ datasheet, MAX16993ATJI+ pinout, MAX16993ATJI+ application, or MAX16993ATJI+ equivalent, key selection considerations include its triple-output architecture with individual enable/reset, spread-spectrum EMI reduction, SYNC input for system-level clock alignment, and side-wettable QFND-EP package for automated optical inspection in automotive PCB assembly.
Technical Context
The MAX16993ATJI+ implements a current-mode control architecture with forced-PWM and skip-mode operation across all three channels, enabling stable regulation under light-load conditions while maintaining tight voltage accuracy (±2.5% for OUT1, ±3.0% for OUT2/OUT3) over -40°C to +125°C. Its OUT1 controller supports up to 42V load-dump transient protection and pin-selectable 2.1MHz or factory-programmed lower frequencies (1.05MHz/525kHz/420kHz/350kHz).
OUT2 and OUT3 operate from OUT1's output, feature 180° out-of-phase switching to reduce input ripple, integrate 50–110mΩ MOSFETs, and support fixed or resistor-divider-adjustable outputs from 0.8V to 3.95V. Each channel includes independent soft-start (4ms for OUT1, 2.5ms for OUT2/OUT3), overcurrent limiting via CS1/CS2/CS3 sensing, and thermal shutdown at +170°C with 15°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.5V to 36V continuous; withstands 42V load-dump transients - enables direct connection to automotive battery without external protection circuitry. |
| Switching Frequency | 2.1MHz (CSEL1 = GND); factory options include 1.05MHz/525kHz/420kHz/350kHz - allows AM-band avoidance and compact magnetics. |
| Quiescent Current | 30µA with OUT1 enabled - meets automotive "always-on" module sleep-mode requirements (e.g., telematics, body control modules). |
| Output Current Capability | OUT2/OUT3: up to 3.0A each (IMAX = 3.0A option); OUT1 controller drives external FETs - supports multi-rail SoC and MCU core/logic I/O supplies. |
| Output Voltage Accuracy | ±2.5% for OUT1 (PWM mode), ±3.0% for OUT2/OUT3 - ensures reliable operation of sensitive automotive sensors and processors without trimming resistors. |
| Thermal Protection | Thermal warning at +150°C, shutdown at +170°C with 15°C hysteresis - prevents latch-up during sustained high-temperature engine-bay operation. |
| Package | 32-pin side-wettable QFND-EP (5mm × 5mm × 0.8mm); exposed pad tied to GND - supports AOI-compatible reflow and 2.8°C/W junction-to-case thermal resistance. |
Pinout & Package
MAX16993ATJI+ uses a 32-pin side-wettable QFND-EP package (5mm × 5mm × 0.8mm) with exposed thermal pad connected to GND. The package supports automated optical inspection and delivers θJC = 2.8°C/W for robust thermal performance in automotive under-hood environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP | High-voltage input supply | Accepts 3.5V–36V automotive battery; internal UVLO starts regulation at 4.5V (typ), protects against brownout. |
| EN1 / EN2 / EN3 | Independent enable inputs | Active-high digital controls; EN1 enables entire PMIC; EN2/EN3 independently activate OUT2/OUT3 after OUT1 is stable. |
| OUT1 / OUT2 / OUT3 | Output voltage sense & current-sense return | Provides feedback path and negative current-sense node; enables accurate regulation and cycle-by-cycle overcurrent protection. |
| RESET1 / RESET2 / RESET3 | Open-drain reset outputs | Assert low when respective output drops >6% below nominal; timeout programmable (0.1–7.8ms) - used for processor power-good sequencing. |
| CSEL1 / SSEN / SYNC | Configuration and synchronization inputs | CSEL1 selects 2.1MHz or factory-divided frequency; SSEN enables spread-spectrum EMI reduction; SYNC accepts 1.7–2.4MHz external clock for system-wide timing alignment. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-output cascaded architecture | OUT1 (HV controller) powers OUT2/OUT3 (LV converters), improving overall efficiency by eliminating redundant input filtering and reducing total solution size. |
| Spread-spectrum enable (SSEN) | Reduces peak radiated EMI by modulating switching frequency ±6% at 4kHz sawtooth rate - eliminates need for additional EMI filters in cost-sensitive automotive modules. |
| Individual soft-start timers | 4ms for OUT1, 2.5ms for OUT2/OUT3 - prevents inrush current overload on shared input rail and enables controlled power-up sequencing for downstream logic. |
| AEC-Q100 Grade-0 qualification | Rated for -40°C to +125°C ambient operation with full electrical characterization - certified for safety-critical front-end ADAS and infotainment applications. |
| Side-wettable QFND-EP package | Enables automated optical inspection of solder joints on bottom-side pads - improves manufacturing yield and long-term reliability in high-vibration automotive assemblies. |
Applications
| Infotainment Power Supply | ADAS Camera Module |
|---|---|
|
Use Scenario: Powering SoC, DDR memory, and display interface in head-unit systems requiring multiple regulated rails from 12V battery. IC Role / Device Role / Timing Role: Primary PMIC providing 5.0V (OUT1), 3.3V (OUT2), and 1.2V (OUT3) with synchronized startup and independent reset signaling. Use Value: Eliminates need for discrete DC-DC stages; 2.1MHz operation allows use of 1.0µH inductors, reducing board area by >35% vs. 500kHz solutions. |
Use Scenario: Supplying image sensor, ISP, and serializer in rear-view or surround-view camera ECUs exposed to engine-bay temperatures. IC Role / Device Role / Timing Role: High-reliability triple-output regulator with thermal warning output (ERR) and AEC-Q100 Grade-0 rating for extended temperature operation. Use Value: 30µA quiescent current extends battery runtime in parking-mode vision systems; 42V transient tolerance avoids external TVS diodes. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
|
Use Scenario: Powering microcontroller, CAN transceiver, and LIN interface in door module or lighting control unit. IC Role / Device Role / Timing Role: Cascaded buck architecture supplies 3.3V logic rail (OUT2) and 5.0V analog rail (OUT1) with individual enable control for subsystem power gating. Use Value: Independent EN2/EN3 pins allow dynamic power cycling of peripherals; RESET2/RESET3 provide sequenced power-good signals to MCU GPIOs. |
Use Scenario: Providing always-on 3.3V and 1.8V rails for cellular modem, GNSS receiver, and secure element in connected vehicle gateways. IC Role / Device Role / Timing Role: Low-IQ PMIC with spread-spectrum EMI control meeting CISPR-25 Class 5 radiated emissions limits for wireless modules. Use Value: SSEN pin enables on-demand EMI reduction during RF transmission bursts; SYNC input aligns switching edges with baseband clock to minimize noise coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel automotive DC-DC controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20096ATPA/V+ | Single 3.5–36V input, dual 3A synchronous buck; no spread-spectrum; fixed 2.1MHz only; 35µA IQ | Lacks individual reset outputs and CSEL1 frequency select; supports only fixed 2.1MHz operation | Preferred when simplified configuration and lower BOM count outweigh need for EMI tuning or frequency flexibility. |
| TPS65321A-Q1 | Triple-output (1x HV buck + 2x LV bucks); 3.5–36V input; 2.2MHz max; 45µA IQ; no spread-spectrum; different pinout | Includes integrated watchdog and window comparator; lacks SYNC input and side-wettable package | Chosen when system-level functional safety monitoring (ISO 26262 ASIL-B ready) is prioritized over EMI optimization. |
Compared with MAX20096ATPA/V+ and TPS65321A-Q1, the MAX16993ATJI+ uniquely combines spread-spectrum EMI reduction, pin-selectable frequency, individual reset timeout programming, and side-wettable QFND packaging - making it optimal for space-constrained, emissions-sensitive automotive modules requiring production-grade AOI validation.
Availability
MAX16993ATJI+ is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, body control units, and telematics control units requiring stable component supply across extended temperature and high-reliability automotive programs.
Supply support for MAX16993ATJI+ 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, with deep expertise in high-reliability power conversion.
The MAX16993ATJI+ belongs to Maxim's automotive-grade PMIC product line, engineered specifically for single-chip multi-rail power solutions in harsh-temperature vehicle environments - emphasizing low quiescent current, transient robustness, and AEC-Q100 compliance.
FAQ
What is the maximum input voltage the MAX16993ATJI+ can withstand during automotive load-dump events?
The MAX16993ATJI+ is protected against load-dump transients up to 42V, exceeding ISO 7637-2 Pulse 5a requirements. This allows direct connection to the vehicle battery without external TVS diodes in most 12V and 24V systems. The device maintains regulation down to 3.5V input and features undervoltage lockout that disables all outputs if VSUP falls below 4.25V (min).
Does the MAX16993ATJI+ support adjustable output voltages for all three channels?
Yes - the MAX16993ATJI+ supports resistor-divider-adjustable outputs on all three channels. OUT1 regulates to 1.0V (typ) at FB1 in adjustable mode, enabling 3.0V–5.5V outputs. OUT2 and OUT3 regulate to 0.815V (typ) at their respective feedback inputs, supporting 0.8V–3.95V outputs. Fixed-voltage options (e.g., 3.3V, 5.0V, 1.8V) are also available per the Selector Guide.
How does the spread-spectrum function (SSEN) affect electromagnetic compatibility in the MAX16993ATJI+?
When SSEN is pulled high to BIAS, the MAX16993ATJI+ modulates its internal oscillator frequency between fSW and fSW + 6% at a 4kHz sawtooth rate. This spreads spectral energy and reduces peak radiated emissions by up to 10dB - helping systems meet CISPR-25 Class 5 limits without adding ferrite beads or shielding. The feature is disabled when SSEN is grounded.
Can the MAX16993ATJI+ be synchronized to an external clock source, and what are the valid frequency ranges?
Yes - the MAX16993ATJI+ includes a SYNC input that accepts external clock signals from 1.7MHz to 2.4MHz with 50% duty cycle. When driven high, SYNC forces fixed-frequency PWM mode; when grounded or floating, the device enters skip mode under light loads. This enables precise timing alignment across multiple power rails in complex automotive ECUs.
What thermal performance metrics are specified for the MAX16993ATJI+ in its side-wettable QFND-EP package?
The MAX16993ATJI+ in side-wettable QFND-EP package has a junction-to-ambient thermal resistance (θJA) of 37°C/W and junction-to-case (θJC) of 2.8°C/W, measured per JEDEC JESD51-7 on a four-layer board. At TA = +70°C, derating is 27mW/°C above ambient, supporting 2160mW continuous power dissipation - sufficient for 3A loads at full ambient temperature in properly heatsinked layouts.
MAX16993ATJI+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Product Status:
- Obsolete
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX16993ATJI+ FAQ
1.How can I place an order for MAX16993ATJI+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16993ATJI+ 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 MAX16993ATJI+ reliable?
The price and inventory of MAX16993ATJI+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16993ATJI+ is usually 5 days.
3.What payment methods are accepted for MAX16993ATJI+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16993ATJI+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16993ATJI+?
MAX16993ATJI+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16993ATJI+ 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 MAX16993ATJI+?
For technical support, including MAX16993ATJI+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16993ATJI+ requirements.
6.How does Aetrix verify that MAX16993ATJI+ is sourced from the original manufacturer or authorized distributors?
All MAX16993ATJI+ 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 MAX16993ATJI+ meets industry standards.
7.What is the process for return or replacement of MAX16993ATJI+?
All MAX16993ATJI+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16993ATJI+, 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 MAX16993ATJI+ part is unused and in its original packaging.
Return procedure for MAX16993ATJI+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX16993ATJI+ Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
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…
