My Inquiry
My Account
onsemi MC33167D2TR4G
- Part No.:
- MC33167D2TR4G
- Manufacturer:
- onsemi
- Package:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Datasheet:
-
MC33167D2TR4G.pdf
- Description:
- IC REG BUCK BST ADJ 5.5A D2PAK-5
- Quantity:
- Payment:
- Shipping:
Inventory:652
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC33167D2TR4G from onsemi is a fixed-frequency voltage-mode switching regulator IC designed for step-down, inverting, and step-up/down dc-dc converter applications. It integrates a 5.0 A output switch, 72 kHz oscillator, precision 5.05 V ±2% reference, cycle-by-cycle current limiting, and thermal shutdown. It operates from 7.5 V to 40 V input and supports automotive-grade ambient temperature range (−40 °C to +85 °C) in D2PAK surface-mount package.
For engineers reviewing the MC33167D2TR4G datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation insights, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The MC33167D2TR4G implements voltage-mode PWM control using an internal error amplifier with 80 dB open-loop gain and 600 kHz unity-gain bandwidth, referenced to a trimmed 5.05 V bandgap. Its oscillator generates a 72 kHz (±10%) ramp with 95% max duty cycle and built-in blanking to prevent multiple pulses per cycle.
Protection architecture includes undervoltage lockout (startup at 5.9 V with 0.9 V hysteresis), cycle-by-cycle current limiting (6.5 A typical threshold), and thermal shutdown (activation at ~170 °C). Standby mode reduces supply current to 36 µA when compensation pin voltage drops below 150 mV.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 7.5 V to 40 V - supports wide industrial and automotive battery-fed inputs without external pre-regulation. |
| Switch Current Rating | 5.0 A continuous - enables high-power step-down converters up to ~200 W with proper heatsinking. |
| Oscillator Frequency | 72 kHz (typical) - balances EMI suppression and magnetics size; fixed internal timing eliminates external resistor. |
| Reference Voltage | 5.05 V ±2% - provides stable feedback threshold; enables 5.0 V output without external divider in basic configurations. |
| Duty Cycle Range | 0% to 95% - allows deep step-down ratios and accommodates wide input/output differentials in inverting topologies. |
| Operating Temperature | −40 °C to +85 °C - qualified for under-hood automotive and industrial environments. |
| Standby Supply Current | 36 µA at 12 V - enables low-quiescent-power sleep modes in battery-backed systems. |
Pinout & Package
MC33167D2TR4G is housed in a thermally enhanced D2PAK (TO-263) surface-mount package (Case 936A), with the exposed tab electrically connected to Pin 3 (Ground) and optimized for PCB copper area heat spreading.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Comp) | Compensation Node | Output of error amplifier; connects to RC network for loop stability; clamping below 150 mV enables standby mode. |
| Pin 2 (FB) | Feedback Input | Inverting input of error amplifier; senses regulated output via resistor divider; threshold = 5.05 V. |
| Pin 3 (GND) | Power & Signal Ground | Common return for internal circuits and external power paths; tab connection enables low-thermal-resistance heatsinking. |
| Pin 4 (VCC) | Power Supply Input | Bias supply for internal circuitry; must be ≥7.5 V to enable operation; UVLO activates below 5.9 V. |
| Pin 5 (SW) | Switch Output | Collector of internal NPN power transistor; drives external inductor; rated for 40 V max and 5.0 A peak. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 5.0 A NPN Switch | Eliminates need for external high-current transistor in ≤200 W step-down designs; reduces BOM count and layout complexity. |
| Fixed 72 kHz Oscillator | Removes timing component selection burden; ensures consistent frequency across temperature and unit-to-unit variation. |
| 5.05 V ±2% Reference | Enables accurate 5.0 V output without external resistors; compensates for typical 1% cable drop in automotive applications. |
| Cycle-by-Cycle Current Limit | Provides immediate overcurrent protection per switching cycle-critical for reliability in short-circuit or overload conditions. |
| Undervoltage Lockout w/ Hysteresis | Prevents erratic startup/shutdown near minimum input; 0.9 V hysteresis avoids oscillation during brownout recovery. |
Applications
| Automotive Body Control Module (BCM) | Industrial 24 V to 5 V Step-Down Supply |
|---|---|
|
Use Scenario: Powering microcontrollers, CAN transceivers, and sensor interfaces in vehicle door modules and lighting controllers. IC Role / Device Role / Timing Role: Primary step-down regulator converting 9–16 V battery rail to stable 5.0 V logic supply. Use Value: −40 °C to +85 °C rating ensures operation across full automotive temperature range; integrated current limit protects against motor stall faults. |
Use Scenario: Generating isolated 5 V logic rails from unregulated 24 V factory automation bus. IC Role / Device Role / Timing Role: Fixed-frequency PWM controller driving external inductor/diode to deliver 5.0 V @ 5 A. Use Value: 72 kHz switching enables compact magnetics; D2PAK package supports conduction-cooled PCB heatsinking in enclosed enclosures. |
| Voltage-Inverting Power Supply | Triple-Output Distributed Power System |
|
Use Scenario: Generating −12 V bias for op-amps and analog front-ends in test equipment and instrumentation. IC Role / Device Role / Timing Role: Configured in inverting topology with ground pin tied to negative output to reverse error amp polarity. Use Value: 95% max duty cycle accommodates large |VOUT|/VIN ratios; internal 5.05 V reference ensures precise negative output regulation. |
Use Scenario: Providing independent 5 V, 12 V, and −12 V outputs from single 24 V input in embedded computing platforms. IC Role / Device Role / Timing Role: Core controller in multi-winding transformer-based triple-output flyback design. Use Value: Single-chip solution replaces three discrete regulators; shared oscillator and feedback path simplifies synchronization and EMI filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC34167D2TR4G | Same silicon, but rated for 0 °C to +70 °C ambient; identical electrical specs and pinout. | Not suitable for automotive under-hood or extended-temperature industrial use. | Select only for commercial-temperature applications where cost or legacy qualification drives choice. |
| LM2596S-5.0/NOPB | 3 A switch current, 150 kHz switching, fixed 5.0 V output; no adjustable FB pin or external compensation. | Limited to fixed-output step-down; lacks inverting/step-up-down capability and thermal shutdown flag. | Choose for simpler, lower-power 5 V supplies where flexibility and ruggedness are secondary to BOM cost. |
Compared with MC34167D2TR4G, MC34167D2TR4G offers identical performance but narrower temperature range, while LM2596S-5.0/NOPB trades configurability and robustness for integration and cost in fixed-output designs.
Availability
MC33167D2TR4G is available at Aetrix Electronics and suitable for automotive body electronics, industrial 24 V power conversion, voltage-inverting supplies, and distributed multi-rail systems requiring stable component supply across extended temperature ranges.
Supply support for MC33167D2TR4G 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
onsemi (Nasdaq: ON) is a global semiconductor leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MC33167 series belongs to onsemi's legacy high-current monolithic switching regulator product line, engineered for cost-sensitive, high-reliability dc-dc conversion in harsh environments where integration, thermal resilience, and protection features are critical.
FAQ
What is the maximum output current capability of the MC33167D2TR4G?
The MC33167D2TR4G integrates a 5.0 A rated NPN power switch with a typical current limit threshold of 6.5 A. In practical step-down designs with adequate heatsinking and PCB copper area, it reliably delivers up to 5.0 A continuous output current. Peak transient current depends on duty cycle, thermal management, and external components-but sustained operation above 5.0 A requires careful thermal design and may trigger thermal shutdown.
Can the MC33167D2TR4G be used in a voltage-inverting configuration?
Yes, the MC33167D2TR4G supports voltage-inverting topologies, as confirmed in Figure 23 of its datasheet. The design requires connecting the IC's ground pin (Pin 3) to the negative output rail, which reverses the error amplifier's effective polarity and keeps the switch emitter within safe voltage limits. This configuration delivers regulated negative outputs such as −12 V at up to 1.7 A, with demonstrated efficiency of 79.5% at 12 V input.
Does the MC33167D2TR4G require an external timing resistor?
No, the MC33167D2TR4G uses an internal trimmed current source and capacitor to set its 72 kHz oscillator frequency-no external timing resistor or capacitor is needed. This simplifies design, improves frequency stability across temperature, and eliminates component tolerance drift. The oscillator is fully self-contained, unlike adjustable-frequency controllers that rely on external RC networks.
What is the purpose of the Comp pin (Pin 1) on the MC33167D2TR4G?
The Comp pin (Pin 1) is the output of the internal error amplifier and serves as the compensation node for the feedback loop. It connects to an external RC network (typically RF and CF) between Pins 1 and 5 to stabilize the control loop. Critically, pulling this pin below 150 mV places the MC33167D2TR4G into low-power standby mode, reducing supply current to 36 µA-enabling efficient power gating in battery-operated systems.
Is the MC33167D2TR4G RoHS-compliant and lead-free?
Yes, the MC33167D2TR4G is a Pb-free (lead-free) device, as indicated by the "G" suffix in its part number and explicitly stated in the Ordering Information table (page 16) and Features list of the datasheet. It meets RoHS Directive 2011/65/EU requirements and is rated MSL Level 1-unsuitable for moisture-sensitive handling restrictions.
MC33167D2TR4G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-263-6, D2PAK (5 Leads + Tab), TO-263BA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Function:
- Step-Up, Step-Down
- Output Configuration:
- Positive or Negative
- Topology:
- Buck, Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 7.5V
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5.05V
- Voltage - Output (Max):
- 40V (Switch)
- Current - Output:
- 5.5A (Switch)
- Frequency - Switching:
- 72kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK-5
MC33167D2TR4G FAQ
1.How can I place an order for MC33167D2TR4G through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33167D2TR4G 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 MC33167D2TR4G reliable?
The price and inventory of MC33167D2TR4G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33167D2TR4G is usually 5 days.
3.What payment methods are accepted for MC33167D2TR4G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33167D2TR4G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33167D2TR4G?
MC33167D2TR4G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33167D2TR4G 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 MC33167D2TR4G?
For technical support, including MC33167D2TR4G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33167D2TR4G requirements.
6.How does Aetrix verify that MC33167D2TR4G is sourced from the original manufacturer or authorized distributors?
All MC33167D2TR4G 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 MC33167D2TR4G meets industry standards.
7.What is the process for return or replacement of MC33167D2TR4G?
All MC33167D2TR4G units undergo pre-shipment inspection (PSI). If there is an issue with MC33167D2TR4G, 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 MC33167D2TR4G part is unused and in its original packaging.
Return procedure for MC33167D2TR4G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC33167D2TR4G 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
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
