My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX17783CATB+
- Part No.:
- MAX17783CATB+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX17783CATB+.pdf
- Description:
- IC REG BUCK ADJ 2.5A 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,912
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX17783CATB+ from Maxim Integrated is a high-efficiency, wide-input (6V–60V), 2.5A synchronous step-down DC-DC converter with integrated high-side MOSFET, internal compensation, and ±1.6% output voltage regulation accuracy over –40°C to +125°C. It operates in peak current-mode control with Low Iq mode for light-load efficiency and supports adjustable switching frequency from 400kHz to 2.2MHz - used in industrial power distribution, base-station supplies, and high-voltage single-board systems.
For engineers reviewing the MAX17783CATB+ datasheet, MAX17783CATB+ pinout, MAX17783CATB+ application, or MAX17783CATB+ equivalent, key selection considerations include its 10-pin TDFN package, 73ns minimum on-time, hiccup-mode overload protection, programmable EN/UVLO threshold, and built-in RESET monitoring with 92.1%–95.4% FB trip thresholds.
Technical Context
The MAX17783CATB+ implements peak current-mode control with cycle-by-cycle current limiting (IPEAK-LIMIT = 4A) and runaway protection (IRUNAWAY-LIMIT = 4.77A), enabling robust operation under overload and short-circuit conditions. Its internal LDO delivers 5V ±2.5% at up to 15mA from VIN, powering internal circuitry and recharging the bootstrap capacitor.
It features monotonic startup into prebiased outputs, adjustable soft-start via external capacitor, and external clock synchronization capability (1.1× to 1.4× fSW). Thermal shutdown activates at +154°C with 15°C hysteresis, and the device complies with CISPR32 Class B conducted/radiated emissions standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 6V to 60V - supports direct connection to 12V, 24V, 48V industrial rails and wall transformers without pre-regulation. |
| Output Current | Up to 2.5A continuous - sufficient for FPGA core rails, DSPs, and multi-rail point-of-load applications. |
| Output Voltage Range | 0.9V to 90% of VIN - enables flexible regulation from low-voltage logic (e.g., 0.9V for modern processors) to mid-rail supplies. |
| Switching Frequency | 400kHz to 2.2MHz - selectable via RT/SYNC resistor or external clock; higher frequencies allow smaller inductors and capacitors. |
| Feedback Accuracy | ±1.6% over –40°C to +125°C - ensures stable output regulation across full industrial temperature range without calibration. |
| Quiescent Current | 205μA in Low Iq mode - minimizes no-load power loss in always-on systems like remote sensors or IoT gateways. |
| Min On-Time / Off-Time | 73ns / 140ns - enables high-frequency operation and wide VIN/VOUT ratios (e.g., 48V→3.3V at 500kHz). |
Pinout & Package
MAX17783CATB+ is housed in a compact 10-pin, 3mm × 3mm TDFN package with exposed pad (EP) for thermal dissipation. The package uses RoHS-compliant lead finish and is rated for junction temperatures up to +150°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Power input | Accepts 6V–60V supply; requires ≥2.2μF X7R ceramic decoupling close to pin for EMI suppression and transient response. |
| 2 EN/UVLO | Enable & input UVLO control | Resistor-divider programmable turn-on threshold (1.218V typical rising); pull low to disable device. |
| 3 GND | Power ground reference | Must connect to low-impedance ground plane; EP must be soldered to same ground for thermal and electrical integrity. |
| 4 RT/SYNC | Frequency programming / sync input | Resistor-to-GND sets fSW; external clock input accepts 1.1×–1.4× fSW with >50ns pulse width and TTL-compatible levels. |
| 5 SS | Soft-start timing node | Capacitor-to-GND sets startup ramp time; prevents inrush current into large output capacitance banks. |
| 6 FB | Output voltage feedback | Monitors resistive divider output; regulates VOUT to 0.9V reference with ±1.6% accuracy across temperature. |
| 7 RESET | Open-drain power-good monitor | Asserts low when FB falls below 92.1% of setpoint; deasserts 1024 cycles after FB rises above 95.4%. |
| 8 VCC | Internal 5V LDO output | Bypass with 2.2μF ceramic; powers internal logic and recharges BST capacitor; not for external loading. |
| 9 BST | Bootstrap supply for high-side gate | Requires ≥0.1μF ceramic cap to LX and Schottky diode from VCC; enables efficient high-side MOSFET drive. |
| 10 LX | Switching node | Connects to inductor and freewheeling diode cathode; carries high di/dt pulsed current - layout critical for EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Internal compensation | Eliminates need for external compensation network - simplifies design, reduces BOM count, and improves stability across load/input variations. |
| Low Iq mode | Reduces input quiescent current to 205μA at light loads - extends battery life in standby or sensor-monitoring applications. |
| Hiccup-mode OCP | Shuts down for 32768 cycles upon overcurrent or FB undervoltage - limits power dissipation during sustained shorts without latch-off. |
| Prebiased output startup | Prevents reverse current flow into powered outputs - essential for hot-swap and redundant supply architectures. |
| CISPR32 Class B compliance | Meets conducted/radiated emission limits without additional filtering - reduces system-level EMC validation effort and cost. |
Applications
| Industrial Power Distribution | Base-Station Power Supplies |
|---|---|
Use Scenario: Distributed 48V backplane powering multiple isolated DC-DC modules in factory automation controllers. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator converting 48V to 5V/3.3V intermediate bus for downstream POL converters. Use Value: Wide 6V–60V input accommodates brownout and surge conditions; 90.4% peak efficiency reduces thermal load in enclosed cabinets. | Use Scenario: Compact RF transceiver card requiring clean, regulated 12V and 5V rails from telecom -48V supply. IC Role / Device Role / Timing Role: High-density step-down converter delivering 2.5A at 12V with minimal PCB area and low EMI. Use Value: 73ns min on-time enables 48V→12V conversion at 2.2MHz, shrinking inductor size by >50% vs. 500kHz solutions. |
| Wall Transformer Regulation | Audio Power Supplies |
Use Scenario: Universal-input AC/DC adapter (90–264VAC) feeding 36V DC bus to regulate 24V/15V for consumer audio amplifiers. IC Role / Device Role / Timing Role: Secondary-side high-voltage buck controller accepting rectified DC input and delivering tightly regulated audio supply rails. Use Value: ±1.6% FB accuracy and built-in RESET ensure stable bias for Class-D amplifier stages; hiccup mode protects against speaker short circuits. | Use Scenario: High-fidelity DAC and headphone amplifier board requiring ultra-low-noise 5V and 3.3V supplies from 12V wall adapter. IC Role / Device Role / Timing Role: Low-ripple, low-EMI buck converter operating in CCM with all-ceramic output caps and internal compensation. Use Value: 3.01μA shutdown current preserves battery backup during standby; Low Iq mode maintains >85% efficiency at 10mA load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QPWPRQ1 | 4.5V–65V input, 1.5A output, 100ns min on-time, no integrated VCC LDO - requires external bias. | Lacks RESET output and internal 5V LDO; suited for cost-sensitive automotive applications where external bias is available. | Choose LM5164QPWPRQ1 only if 1.5A output suffices and external VCC generation is acceptable. |
| TPS54260DGQR | 3.5V–60V input, 2.5A output, 100ns min on-time, no hiccup mode - latches off on overcurrent. | No built-in RESET or prebias startup; requires external PG circuitry and careful UVLO design for hot-swap use cases. | Select TPS54260DGQR when latch-off OCP is preferred and RESET monitoring is implemented externally. |
Compared with LM5164QPWPRQ1 and TPS54260DGQR, the MAX17783CATB+ provides superior integration (internal 5V LDO, RESET, hiccup OCP, prebias startup) and tighter regulation accuracy (±1.6% vs. ±2%), making it optimal for space-constrained industrial and telecom systems demanding high reliability and minimal external components.
Availability
MAX17783CATB+ is available at Aetrix Electronics and suitable for industrial power distribution, base-station power supplies, and wall transformer regulation requiring stable component supply, long-term lifecycle support, and consistent parametric performance across manufacturing lots.
Supply support for MAX17783CATB+ 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 industrial, communications, and computing applications.
The MAX17783CATB+ belongs to the Himalaya series of high-voltage DC-DC regulators engineered for cooler, smaller, and simpler power supply solutions in harsh environments - emphasizing high efficiency, wide input range, and robust protection features.
FAQ
What is the maximum output current capability of the MAX17783CATB+ across temperature?
The MAX17783CATB+ delivers up to 2.5A continuous output current over the full –40°C to +125°C ambient temperature range. This rating accounts for thermal derating due to junction temperature limits (+150°C max) and internal high-side MOSFET RDS-ONH (158mΩ typical), verified under worst-case conditions including 60V input and 125°C ambient with proper PCB thermal design using the exposed pad.
Does the MAX17783CATB+ support synchronization to an external clock signal?
Yes, the MAX17783CATB+ supports external clock synchronization via the RT/SYNC pin. When an external clock is applied, the device locks to frequencies between 1.1× and 1.4× its internally programmed switching frequency. The external clock must meet VIH ≥ 2.1V, VIL ≤ 0.8V, and pulse width ≥ 50ns. Note that RT/SYNC must be terminated with a resistor (not left open) to enable this feature.
How does the MAX17783CATB+ handle startup into a prebiased output voltage?
The MAX17783CATB+ implements monotonic prebiased startup: the high-side MOSFET remains off until the SS pin voltage exceeds the FB pin voltage, preventing reverse current flow. Once aligned, VFB ramps smoothly to 0.9V while the output voltage tracks toward its target. This behavior is confirmed in the Functional Diagram and Detailed Description sections of the MAX17783C datasheet.
What is the purpose of the VCC pin on the MAX17783CATB+, and can it power external circuitry?
The VCC pin on the MAX17783CATB+ is the output of an internal 5V LDO regulator powered from VIN. It supplies current to internal logic blocks and recharges the BST capacitor. Per the datasheet, VCC is not intended for external loading - the LDO supports only up to 15mA and lacks external load regulation capability. Connecting external loads may cause VCC droop and unstable operation.
What protection features are integrated into the MAX17783CATB+?
The MAX17783CATB+ integrates hiccup-mode overcurrent protection (triggered at 4.77A runaway limit or FB < 0.58V), thermal shutdown (+154°C with 15°C hysteresis), programmable EN/UVLO, output voltage monitoring with open-drain RESET, and adjustable soft-start. All protections are fully internal - no external components required for basic fault coverage.
MAX17783CATB+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- Himalaya
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tray
- 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):
- 60V
- Voltage - Output (Min/Fixed):
- 0.9V
- Voltage - Output (Max):
- 54V
- Current - Output:
- 2.5A
- Frequency - Switching:
- 400kHz ~ 2.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN (3x3)
MAX17783CATB+ FAQ
1.How can I place an order for MAX17783CATB+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX17783CATB+ 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 MAX17783CATB+ reliable?
The price and inventory of MAX17783CATB+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX17783CATB+ is usually 5 days.
3.What payment methods are accepted for MAX17783CATB+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX17783CATB+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX17783CATB+?
MAX17783CATB+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX17783CATB+ 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 MAX17783CATB+?
For technical support, including MAX17783CATB+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX17783CATB+ requirements.
6.How does Aetrix verify that MAX17783CATB+ is sourced from the original manufacturer or authorized distributors?
All MAX17783CATB+ 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 MAX17783CATB+ meets industry standards.
7.What is the process for return or replacement of MAX17783CATB+?
All MAX17783CATB+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX17783CATB+, 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 MAX17783CATB+ part is unused and in its original packaging.
Return procedure for MAX17783CATB+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX17783CATB+ 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…
