My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX17632CATE+T
- Part No.:
- MAX17632CATE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX17632CATE+T.pdf
- Description:
- IC REG BUCK ADJ 2A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,305
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX17632CATE+T from Maxim Integrated is a high-efficiency, synchronous step-down DC-DC converter with integrated MOSFETs, operating from 4.5V to 36V input and delivering up to 2A output current. It features adjustable output voltage (0.9V to 90% of VIN), peak-current-mode control, and supports PWM/DCM/PFM operation modes. Designed for industrial point-of-load regulation in high-voltage single-board systems.
For engineers reviewing the MAX17632CATE+T datasheet, MAX17632CATE+T pinout, MAX17632CATE+T application, or MAX17632CATE+T equivalent, key selection criteria include its 16-pin TQFN package, ±1.2% feedback regulation accuracy over –40°C to +125°C, 400kHz–2.2MHz programmable switching frequency, hiccup-mode overload protection, and built-in output voltage monitoring with RESET.
Technical Context
The MAX17632CATE+T implements peak-current-mode control with internal compensation across its full output-voltage range, eliminating external compensation components. Its MODE/SYNC pin enables seamless selection among forced PWM, PFM, and DCM modes - optimizing efficiency from full load to light load.
It integrates high-side (125–250 mΩ) and low-side (80–160 mΩ) nMOSFETs, supports external clock synchronization (1.1× to 1.4× fSW), and features a 52 ns minimum on-time for high-frequency operation. The device includes monotonic soft-start, prebiased startup capability, and auxiliary EXTVCC input to reduce LDO losses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 36V - supports wide industrial input rails including 12V, 24V, and 36V bus systems. |
| Output Current | Up to 2A continuous - sufficient for powering FPGAs, microcontrollers, and analog subsystems. |
| Output Voltage Range | Adjustable from 0.9V to 90% of VIN - enables flexible rail generation (e.g., 1.2V, 1.8V, 3.3V, 5V) using external resistor divider. |
| Feedback Accuracy | ±1.2% over –40°C to +125°C - ensures stable regulation under harsh ambient conditions. |
| Switching Frequency | 400kHz to 2.2MHz (programmable via RT resistor or external sync) - allows optimization of size vs. EMI vs. efficiency. |
| Peak Efficiency | 94% - reduces thermal stress and improves system power density in compact layouts. |
| Shutdown Current | 2.8μA - enables ultra-low-power standby in battery-backed or energy-sensitive applications. |
Pinout & Package
MAX17632CATE+T is housed in a thermally enhanced 16-pin, 3mm × 3mm TQFN package (package code T1633+5C) with exposed pad for improved heat dissipation (θJA = 38°C/W on 4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 EN/UVLO | Enable / Input UVLO threshold input | Configurable turn-on voltage (1.19–1.26V rising); supports resistor-divider biasing or direct VIN tie for always-on operation. |
| 2 VCC | Internal 5V LDO output | Bypassed with 2.2μF ceramic capacitor; powers internal circuitry - not intended for external loading. |
| 3 SGND | Analog ground reference | Separate from PGND to minimize noise coupling into feedback and control circuits. |
| 4 MODE/SYNC | Mode selection & external clock input | Selects PWM (SGND), PFM (open), or DCM (VCC); accepts external sync signal up to 1.4× fSW. |
| 5 SS | Soft-start timing input | Capacitor-to-ground sets monotonic startup time and prevents inrush current during prebiased output conditions. |
| 6 FB | Feedback voltage sensing input | Connects to center of external resistor divider for adjustable output; regulates to 0.9V ±1.2% reference. |
| 7 RT | Switching frequency programming | Resistor-to-ground sets fSW from 400kHz (open) to 2.2MHz; enables EMI tuning and layout optimization. |
| 8 RESET | Open-drain power-good output | Asserts low when FB falls below 92% of target; deasserts after 1024 cycles once FB rises above 95%. |
| 9 EXTVCC | Auxiliary supply input | Accepts buck output voltage (4.56–4.84V) to bypass internal LDO and improve overall efficiency. |
| 10 PGND | Power ground return | High-current return path for LX switch node; must be connected to SGND at single point near IC. |
| 11 VOUT | Regulated output voltage | Delivers up to 2A; requires external LC filter (e.g., 10µH inductor + 22µF ceramic output cap). |
| 12 LX | Switch node | Connects to inductor; carries high di/dt current - requires short, low-inductance routing and proper bootstrap capacitor (0.1µF). |
| 13 BST | Bootstrap capacitor connection | Connects 0.1µF ceramic capacitor between BST and LX to drive high-side MOSFET gate above VIN. |
| 14 VIN | Main input power supply | Accepts 4.5V–36V; requires local 2.2µF ceramic decoupling close to pin. |
| 15 EP | Exposed thermal pad | Must be soldered to PCB thermal plane for reliable operation at full load and high ambient temperature. |
| 16 VCC | Duplicate VCC pin (pin 2) | Provides second connection point for VCC bypass capacitor - improves high-frequency decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode - reduces conduction loss and improves efficiency at light loads. |
| Internal compensation | Removes need for external Type-II/III compensation network - simplifies design and saves board space. |
| Programmable frequency & sync | Enables EMI spread-spectrum alignment and multi-rail synchronization without additional timing ICs. |
| Hiccup-mode OCP | Protects against sustained overloads by cycling on/off - prevents thermal runaway during short-circuit events. |
| Prebiased soft-start | Allows safe startup into precharged output capacitors - avoids reverse current flow and system reset issues. |
| RESET with voltage monitoring | Provides system-level power-good signaling with hysteresis (92%–95%) - eliminates need for external supervisor IC. |
Applications
| Industrial Control Power Supplies | General-Purpose Point-of-Load |
|---|---|
Use Scenario: Powering PLC I/O modules, sensor interfaces, and fieldbus transceivers in factory automation cabinets with 24V DC rails. IC Role / Device Role / Timing Role: Primary non-isolated DC-DC regulator converting 24V bus to 3.3V/5V logic rails. Use Value: Delivers 2A with ±1.2% regulation across –40°C to +125°C ambient - ensures reliability in uncooled enclosures. |
Use Scenario: Generating clean, low-noise 1.2V core voltage for FPGA or ARM SoC on embedded compute boards. IC Role / Device Role / Timing Role: Adjustable-output buck converter configured via resistor divider for precise rail targeting. Use Value: 52 ns minimum on-time supports 1MHz+ switching - enables compact 10µH inductor and small ceramic caps. |
| Distributed Supply Regulation | Base Station Power Supplies |
Use Scenario: Local regulation on remote radio unit (RRU) daughterboards requiring multiple isolated or semi-isolated rails. IC Role / Device Role / Timing Role: Secondary buck stage downstream of intermediate 12V bus, providing 5V/3.3V/1.8V outputs. Use Value: PFM/DCM modes achieve >85% efficiency at 10mA load - extends uptime in backup-battery scenarios. |
Use Scenario: Power conversion in 5G macro base station control cards where space, thermal, and EMI are critical. IC Role / Device Role / Timing Role: High-efficiency 2A buck supplying 3.3V to FPGA configuration memory and management MCU. Use Value: Meets CISPR-22 Class B radiated emissions with standard layout - avoids costly shielding or filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QWRGERQ1 | 4.5V–65V input, 1A output, integrated FETs, no EXTVCC or RESET; AEC-Q100 qualified. | Automotive-grade only; lacks monotonic soft-start and prebias support - unsuitable for industrial hot-swap use cases. | Choose for automotive infotainment or ADAS if 1A suffices and AEC-Q100 compliance is mandatory. |
| TPS54240DGQR | 3.5V–42V input, 2A output, external compensation required, no PFM/DCM modes, no RESET. | Requires external compensation network and separate supervisor IC - increases BOM count and layout complexity. | Choose only if legacy design reuse is needed and cost sensitivity outweighs design simplicity benefits. |
Compared with LM5164QWRGERQ1 and TPS54240DGQR, the MAX17632CATE+T offers superior integration (internal compensation, RESET, EXTVCC), wider temperature support (–40°C to +125°C), and robust prebiased startup - making it optimal for new industrial and telecom designs demanding reliability and minimal external components.
Availability
MAX17632CATE+T is available at Aetrix Electronics and suitable for industrial control power supplies, general-purpose point-of-load regulation, and distributed supply regulation requiring stable component supply, long-term lifecycle support, and consistent parametric performance.
Supply support for MAX17632CATE+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 industrial, communications, and computing applications.
The MAX17632 product line delivers high-voltage, high-efficiency synchronous buck regulators with integrated MOSFETs and advanced protection features - designed specifically for rugged industrial and telecom infrastructure where input transients, wide temperature ranges, and board-space constraints dominate.
FAQ
What is the recommended input capacitor for MAX17632CATE+T?
The MAX17632CATE+T requires a minimum 2.2µF X7R ceramic capacitor placed as close as possible to the VIN and PGND pins. For high ripple current handling and improved transient response, a parallel combination of 2.2µF (1206) and 10µF (1210) is recommended. Bulk capacitance may be added externally depending on source impedance and hold-up requirements.
Does MAX17632CATE+T support output voltages below 1.0V?
No - the MAX17632CATE+T's internal feedback reference is fixed at 0.9V ±1.2%, and the datasheet specifies an adjustable output range from 0.9V up to 90% of VIN. Output voltages below 0.9V are not supported due to reference limitation and guaranteed regulation accuracy.
Can MAX17632CATE+T operate with a 3.3V input supply?
No - the absolute minimum input voltage for MAX17632CATE+T is 4.5V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Operation below 4.5V violates the device's operational specification and may result in unstable regulation or failure to start.
How is the soft-start time set on MAX17632CATE+T?
The soft-start time for MAX17632CATE+T is set by connecting an external capacitor from the SS pin to SGND. A typical 5600pF capacitor yields ~1.2ms soft-start time. The charging current is 5µA (typical), so tSS ≈ CSS × 0.9V / 5µA - enabling precise control over ramp rate and inrush limiting.
Is MAX17632CATE+T pin-compatible with other MAX17632 variants like MAX17632AATE+T or MAX17632BATE+T?
Yes - all MAX17632 variants (A/B/C) share identical pinout, package (16-pin TQFN), and footprint. The only functional differences are output configuration (fixed 3.3V/5V vs. adjustable) and corresponding FB reference voltage (3.3V/5V/0.9V). No PCB redesign is needed when substituting between variants.
MAX17632CATE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- 32.4V
- Current - Output:
- 2A
- Frequency - Switching:
- 400kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
MAX17632CATE+T FAQ
1.How can I place an order for MAX17632CATE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17632CATE+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 MAX17632CATE+T reliable?
The price and inventory of MAX17632CATE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17632CATE+T is usually 5 days.
3.What payment methods are accepted for MAX17632CATE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17632CATE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17632CATE+T?
MAX17632CATE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17632CATE+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 MAX17632CATE+T?
For technical support, including MAX17632CATE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17632CATE+T requirements.
6.How does Aetrix verify that MAX17632CATE+T is sourced from the original manufacturer or authorized distributors?
All MAX17632CATE+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 MAX17632CATE+T meets industry standards.
7.What is the process for return or replacement of MAX17632CATE+T?
All MAX17632CATE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX17632CATE+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 MAX17632CATE+T part is unused and in its original packaging.
Return procedure for MAX17632CATE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX17632CATE+T 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…
