My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX16993ATJF/V+
- Part No.:
- MAX16993ATJF/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
MAX16993ATJF/V+.pdf
- Description:
- IC REG BUCK ADJ 3A TRPL 32TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,347
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX16993ATJF/V+ from Maxim Integrated is an AEC-Q100 qualified automotive PMIC integrating one high-voltage synchronous step-down controller (OUT1) and two low-voltage synchronous step-down converters (OUT2/OUT3), all operating up to 2.1MHz. It accepts 3.5V–36V input, delivers ≤5.0V/≤3.95V outputs with ±2.5% accuracy, consumes only 30µA quiescent current in no-load mode, and supports load-dump transient protection up to 42V - enabling compact, efficient power rails for ADAS camera modules.
For engineers reviewing the MAX16993ATJF/V+ datasheet, MAX16993ATJF/V+ pinout, MAX16993ATJF/V+ application, or MAX16993ATJF/V+ equivalent, key selection criteria include its 32-pin side-wettable QFND-EP package, individual enable/reset per channel, spread-spectrum EMI reduction, SYNC input for external clock synchronization, and factory-programmable switching frequencies (2.1MHz, 1.05MHz, 525kHz, 420kHz, 350kHz).
Technical Context
The MAX16993ATJF/V+ implements a current-mode architecture with forced-PWM and skip modes across all three buck regulators. OUT1 uses an internal high-side/low-side gate driver (DH1/DL1) with BST1 bootstrap supply and supports programmable frequency via CSEL1; OUT2 and OUT3 are cascaded from OUT1's output and operate at fixed 2.1MHz with integrated 3A FETs and 180° out-of-phase switching to reduce input ripple.
It integrates a 5V BIAS LDO (shut down post-soft-start and shorted to OUT1), individual voltage-monitoring RESET_ outputs with 0.1ms–7.8ms timeout options, overtemperature shutdown (+170°C), and overcurrent limiting based on CS1/OUT1 sensing. All channels feature soft-start (4ms for OUT1; 2.5ms for OUT2/OUT3) and ±3% output accuracy over -40°C to +125°C.
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. |
| Switching Frequency | Pin-selectable 2.1MHz or factory-set 1.05/0.525/0.42/0.35MHz - 2.1MHz operation avoids AM band interference and minimizes inductor size. |
| Quiescent Current | 30µA with OUT1 enabled - meets automotive "always-on" low-power requirements for infotainment and telematics wake-up circuits. |
| Output Accuracy | ±2.5% for OUT1 (PWM mode); ±3.0% for OUT2/OUT3 - ensures stable MCU core and I/O rail regulation without precision resistors. |
| Thermal Rating | AEC-Q100 Grade 0 (−40°C to +125°C ambient); junction limit +150°C - validated for under-hood automotive environments. |
| Protection Features | Overtemperature shutdown (+170°C), overcurrent limiting (100–150mV CS threshold), undervoltage lockout (2.7V PV threshold) - provides robust fault handling in harsh conditions. |
| Package | 32-pin side-wettable QFND-EP (5mm × 5mm × 0.8mm); exposed pad tied to GND - supports automated optical inspection (AOI) and enhances thermal dissipation (θJA = 37°C/W). |
Pinout & Package
MAX16993ATJF/V+ is housed in a 32-pin side-wettable QFND-EP package (5mm × 5mm × 0.8mm) with exposed thermal pad (EP = GND). The package supports AOI and delivers improved thermal performance versus standard TQFN.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSUP | Main HV input supply | Accepts 3.5V–36V battery input; includes UVLO startup threshold (4.5V typ) and 42V transient tolerance. |
| EN1, EN2, EN3 | Independent enable inputs | Active-high digital controls for each buck stage; EN1 gating enables full system sequencing (OUT1 must ramp before OUT2/OUT3). |
| OUT1, OUT2, OUT3 | Output voltage sense inputs | Connect directly to respective output nodes for feedback; support fixed (e.g., 3.3V/5.0V) or resistor-divider adjustable (0.8V–5.5V) regulation. |
| RESET1, RESET2, RESET3 | Open-drain reset outputs | Assert low when corresponding output drops >6% below nominal; timeout programmable (0.1–7.8ms) - used for processor POR coordination. |
| CSEL1, SSEN, SYNC | Configuration control inputs | CSEL1 selects 2.1MHz or divided frequency; SSEN enables spread-spectrum EMI reduction; SYNC accepts external 1.7–2.4MHz clock for system-wide timing alignment. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-buck architecture with cascaded topology | OUT2/OUT3 powered from OUT1 output - improves overall efficiency vs. independent HV inputs and reduces component count. |
| Integrated 3A FETs for OUT2/OUT3 | Eliminates external MOSFETs and drivers; RDS(on) < 110mΩ (high-side) / < 90mΩ (low-side) - simplifies layout and boosts heavy-load efficiency. |
| Spread-spectrum oscillator (SSEN) | Reduces peak radiated EMI by modulating fSW ±3% at 4kHz - enables faster EMC compliance without adding shielding or filters. |
| Individual soft-start timers | 4ms for OUT1; 2.5ms for OUT2/OUT3 - prevents inrush current overload during power-up sequencing in multi-rail systems. |
| Side-wettable QFND-EP package | Enables automated solder-joint inspection (AOI) and achieves θJA = 37°C/W - critical for automotive production traceability and thermal reliability. |
Applications
| ADAS Camera Power Supply | Automotive Infotainment SoC Rails |
|---|---|
|
Use Scenario: Powers image sensor, ISP, and interface circuitry in rear-view or surround-view cameras mounted in vehicle exteriors. IC Role / Device Role / Timing Role: Provides isolated, sequenced 5.0V (OUT1), 3.15V (OUT2), and 1.2V (OUT3) rails with synchronized reset signaling to SoC. Use Value: 2.1MHz switching avoids AM-band noise coupling into analog video signals; AEC-Q100 qualification ensures operation at +105°C ambient. |
Use Scenario: Supplies core, I/O, and memory rails for quad-core automotive-grade application processors in head units. IC Role / Device Role / Timing Role: Delivers tightly regulated 1.0V/1.1V core, 3.3V I/O, and 1.8V DDR rails with independent enable/reset for safe boot and dynamic voltage scaling. Use Value: Cascaded architecture reduces total solution size by 35% vs. discrete DC-DCs; ±2.5% output accuracy maintains processor stability across temperature. |
| Telematics Control Unit (TCU) | Automotive Gateway ECU |
|
Use Scenario: Powers LTE modem, GNSS receiver, and CAN/FlexRay transceivers in cellular-connected vehicle modules. IC Role / Device Role / Timing Role: Generates always-on 3.3V (OUT1), 1.8V (OUT2), and 1.2V (OUT3) with ultra-low 30µA quiescent current during sleep mode. Use Value: Meets ISO 16750-2 pulse 4 (load dump) immunity without external TVS; individual RESET_ outputs coordinate wake-up sequence with baseband processor. |
Use Scenario: Supplies multiple domain controllers (body, chassis, powertrain) via centralized gateway with CAN FD and Ethernet interfaces. IC Role / Device Role / Timing Role: Provides redundant 5.0V (OUT1), 3.3V (OUT2), and 2.5V (OUT3) with overtemperature shutdown and error flag (ERR) for functional safety monitoring. Use Value: SYNC input allows synchronization of all gateway power rails to master clock - eliminates beat-frequency noise in high-speed serial links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel automotive DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX20096ATPA/V+ | 3-channel buck with 2.2MHz max fSW, 40V abs max, but no spread-spectrum; requires external FETs for HV channel. | Targeted at higher-input (40V) industrial/motor-control apps; lacks integrated HV FETs and SSEN pin. | Select MAX20096ATPA/V+ only if >36V input or discrete FET control is required; not drop-in for MAX16993ATJF/V+. |
| TPS653211AQPWPRQ1 | 3-channel buck with 2.1MHz fSW, integrated FETs, and AEC-Q100 Grade 1 (−40°C to +125°C), but no load-dump tolerance >42V or side-wettable package. | Optimized for body electronics; lacks 42V transient rating and AOI-friendly package needed for ADAS placement. | Choose TPS653211AQPWPRQ1 for cost-sensitive interior modules where 42V immunity is not mandated. |
Compared with MAX20096ATPA/V+ and TPS653211AQPWPRQ1, the MAX16993ATJF/V+ uniquely combines 42V load-dump tolerance, integrated HV FETs, spread-spectrum EMI control, and side-wettable QFND packaging - making it the only option qualified for front-end ADAS camera power delivery with zero layout compromises.
Availability
MAX16993ATJF/V+ is available at Aetrix Electronics and suitable for automotive ADAS camera modules, telematics control units, infotainment SoC power supplies, and gateway ECUs requiring stable component supply across extended temperature and high-reliability automotive programs.
Supply support for MAX16993ATJF/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) designs high-performance analog and mixed-signal ICs for automotive, industrial, and communications markets, with deep expertise in power management and ruggedized interface solutions.
The MAX16993ATJF/V+ belongs to Maxim's automotive-qualified PMIC family, engineered specifically to replace discrete DC-DC solutions in space-constrained, thermally demanding ADAS and infotainment subsystems while meeting stringent AEC-Q100 and ISO 16750 requirements.
FAQ
What is the maximum input voltage the MAX16993ATJF/V+ can withstand during automotive load-dump events?
The MAX16993ATJF/V+ is rated to withstand load-dump transients up to 42V for short durations, as specified in its Absolute Maximum Ratings. This capability is built into the VSUP pin structure and enables direct connection to the vehicle battery without external TVS diodes in most Class D (ISO 16750-2) test conditions. The device remains fully functional after such events when operated within its 3.5V–36V normal input range.
Does the MAX16993ATJF/V+ support pin-selectable output voltages for all three channels?
The MAX16993ATJF/V+ supports pin-selectable output voltages only for OUT1 (via FB1 connection to GND or BIAS for 3.3V or 5.0V fixed options); OUT2 and OUT3 require external resistor dividers for adjustable outputs between 0.8V and 3.95V. Factory-trimmed versions of OUT2/OUT3 are available (e.g., 3.15V, 1.8V), but those are distinct orderable variants - the MAX16993ATJF/V+ itself is configured externally per application needs.
How does the spread-spectrum feature (SSEN) affect electromagnetic compatibility in the MAX16993ATJF/V+?
When SSEN is pulled high to BIAS, the MAX16993ATJF/V+ modulates its internal oscillator frequency by ±3% around the nominal switching frequency (e.g., 2.1MHz ±63kHz) with a 4kHz sawtooth profile. This spreads energy across a wider bandwidth, reducing peak radiated emissions by up to 10dB - accelerating CISPR 25 Class 5 compliance without adding ferrites or metal shielding to the PCB layout.
Can the MAX16993ATJF/V+ be synchronized to an external clock source, and what are the valid frequency and signal requirements?
Yes - the MAX16993ATJF/V+ accepts an external clock on its SYNC pin when configured as an input (per factory OTP setting). Valid input frequencies range from 1.7MHz to 2.4MHz, with 50% ±10% duty cycle required. The device locks to the external clock and operates all three buck regulators in forced-PWM mode, eliminating beat frequencies in multi-PMIC systems and improving spectral cleanliness in high-speed automotive networks.
What thermal derating applies to the MAX16993ATJF/V+ in its side-wettable QFND-EP package at elevated ambient temperatures?
In the side-wettable QFND-EP package, the MAX16993ATJF/V+ has a junction-to-ambient thermal resistance (θJA) of 37°C/W. At ambient temperatures above +70°C, power dissipation must be linearly derated at 27mW/°C. For example, at +100°C ambient, maximum allowed continuous power dissipation drops to 2160mW − (30°C × 27mW/°C) = 1350mW - requiring careful thermal design with adequate copper area and airflow in ADAS camera housings.
MAX16993ATJF/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable (Programmable)
- Number of Outputs:
- 3
- Voltage - Input (Min):
- 3.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.8V (3.3V, 5V)
- Voltage - Output (Max):
- 3.95V
- Current - Output:
- 3A
- Frequency - Switching:
- 2.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TQFN (5x5)
MAX16993ATJF/V+ FAQ
1.How can I place an order for MAX16993ATJF/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX16993ATJF/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 MAX16993ATJF/V+ reliable?
The price and inventory of MAX16993ATJF/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX16993ATJF/V+ is usually 5 days.
3.What payment methods are accepted for MAX16993ATJF/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX16993ATJF/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX16993ATJF/V+?
MAX16993ATJF/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX16993ATJF/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 MAX16993ATJF/V+?
For technical support, including MAX16993ATJF/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX16993ATJF/V+ requirements.
6.How does Aetrix verify that MAX16993ATJF/V+ is sourced from the original manufacturer or authorized distributors?
All MAX16993ATJF/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 MAX16993ATJF/V+ meets industry standards.
7.What is the process for return or replacement of MAX16993ATJF/V+?
All MAX16993ATJF/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX16993ATJF/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 MAX16993ATJF/V+ part is unused and in its original packaging.
Return procedure for MAX16993ATJF/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX16993ATJF/V+ 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…
