My Inquiry
My Account
Monolithic Power Systems Inc. MPQ2166BGRHE-AEC1-P
- Part No.:
- MPQ2166BGRHE-AEC1-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 18-PowerVFQFN
- Datasheet:
-
MPQ2166BGRHE-AEC1-P.pdf
- Description:
- IC REG BUCK ADJ DL 18QFN
- Quantity:
- Payment:
- Shipping:
Inventory:500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MPQ2166BGRHE-AEC1-P from Monolithic Power Systems is a dual-channel, AEC-Q100 Grade 1 qualified synchronous buck regulator supporting 2A/2A or 3A/1A output configurations, operating from 2.7V–6V input and delivering regulated outputs down to 0.6V with integrated 55mΩ HS-FETs and 20mΩ LS-FETs; it delivers 90% efficiency at 5V→1.8V/2A/2.3MHz and features power good (PG), external soft start (SS), and 100% duty cycle operation for automotive infotainment and cluster power rails.
For engineers reviewing the MPQ2166BGRHE-AEC1-P datasheet, MPQ2166BGRHE-AEC1-P pinout, MPQ2166BGRHE-AEC1-P application, or MPQ2166BGRHE-AEC1-P equivalent, key selection considerations include dual-channel current configuration flexibility (2A/2A vs. 3A/1A), AEC-Q100 Grade 1 qualification, QFN-18 wettable flank package thermal performance, and peak-current-mode control with internal compensation for fast transient response in space-constrained automotive systems.
Technical Context
The MPQ2166B employs peak-current-mode control with internal compensation per channel, enabling stable regulation without external loop components. Each channel operates with independent soft-start, power-good monitoring, and 180° out-of-phase switching to minimize input ripple.
It supports forced continuous conduction mode (FCCM) across full load range, fixed-frequency operation via resistor-programmed FREQ pin (350kHz–2.59MHz), or external synchronization (0.35–3MHz) with phase alignment on Channel 1 and automatic 180° offset on Channel 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 6V - supports direct connection to automotive 3.3V/5V rails and battery-supplied systems with UVLO at 2.55V rising threshold. |
| Output Voltage Range | 0.6V to 5.5V - set by external resistor divider; internal 0.6V reference enables precise low-voltage core rail generation. |
| Max Output Current | 2A/2A or 3A/1A per channel - configurable dual-output capability allows flexible partitioning of power delivery for SoC + peripheral rails. |
| Switching Frequency | 350kHz to 2.59MHz - programmable via FREQ pin resistor; high-frequency operation enables compact 1.5µH inductors and reduced EMI filter size. |
| Quiescent Current | 100μA typical - enables always-on subsystems in automotive telematics with minimal standby power draw. |
| Thermal Shutdown | 175°C with 40°C hysteresis - protects against sustained overload or poor PCB thermal design while allowing safe recovery after fault clearance. |
| AEC-Q100 Grade | Grade 1 (−40°C to +125°C TJ) - qualified for under-hood and instrument cluster environments requiring extended temperature reliability. |
Pinout & Package
MPQ2166BGRHE-AEC1-P is housed in a wettable flank QFN-18 package (2.5mm × 3.5mm, 0.5mm pitch), optimized for automated optical inspection (AOI) and enhanced thermal dissipation via exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15 | PG2 / PG1 | Open-drain power-good indicators - require external pull-up; assert high when respective FB reaches 90% VREF (0.6V), deassert at 82% for fault detection. |
| 2, 14 | PGND2 / PGND1 | Power ground terminals - must be externally connected to minimize ground bounce and ensure accurate current sensing. |
| 3, 13 | SW2 / SW1 | Switch-node connections - directly drive external inductors; require tight layout to reduce EMI and voltage spikes. |
| 4, 12 | VIN2 / VIN1 | Independent input supplies - decoupled locally with ≥22µF ceramic capacitors to suppress switching transients. |
| 5, 11 | SS2 / SS1 | Soft-start timing inputs - capacitor-to-ground sets ramp time; floating defaults to 0.5ms internal soft-start. |
| 6, 10 | FB2 / FB1 | Feedback inputs - compare output voltage to 0.6V reference; determine regulation accuracy and loop stability. |
| 7 | AGND | Analog ground - must be tied externally to PGND1/PGND2 to prevent noise coupling into error amplifiers. |
| 8 | VCC | Internal bias supply - powered from VIN1/VIN2; requires 0.1–1µF decoupling to AGND for stable gate driver operation. |
| 9 | FREQ | Frequency-setting input - resistor-to-ground programs switching frequency; placement near device minimizes parasitic effects. |
| 16, 18 | EN1 / EN2 | Digital enable inputs - active-high with 0.9V threshold; must not float to avoid undefined startup behavior. |
| 17 | SYNC | External clock input - synchronizes Channel 1 to external source; Channel 2 auto-offsets 180° for interleaved operation. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated MOSFETs | 55mΩ HS-FET + 20mΩ LS-FET per channel - eliminates need for external Schottky diodes and reduces BOM count and board area. |
| MeshConnect™ Flip-Chip | Wettable flank QFN-18 package - improves solder joint reliability and thermal resistance (θJC = 2.7°C/W on EVB). |
| 100% Duty Cycle Operation | Enables LDO-like regulation during low-VIN conditions - maintains output regulation even as input drops to output voltage level. |
| Hiccup-Mode OCP | Auto-retry protection on short-circuit - disables output, discharges SS capacitor, and re-attempts soft-start until fault clears. |
| 180° Interleaved Switching | Reduces RMS input ripple current by ~30% - permits smaller input bulk capacitance and lower EMI filter cost. |
Applications
| Automotive Infotainment | Instrument Clusters |
|---|---|
Use Scenario: Powering multi-core application processors and display interfaces in head units with strict EMI limits and thermal constraints. IC Role / Device Role / Timing Role: Dual-channel buck regulator supplying 1.1V CPU core and 1.8V I/O rails simultaneously with interleaved switching. Use Value: 90% efficiency at 2A/1.8V reduces thermal rise below 20°C, eliminating need for heatsinks in sealed enclosures. | Use Scenario: Delivering stable 3.3V and 5V rails to digital gauges, CAN transceivers, and backlight drivers in dashboard clusters. IC Role / Device Role / Timing Role: Configured as 3A/1A output to support high-current microcontroller and low-current sensor interface simultaneously. Use Value: AEC-Q100 Grade 1 qualification ensures reliable operation across −40°C to +125°C junction temperature range. |
| Telematics Control Units | Portable Automotive Test Equipment |
Use Scenario: Providing isolated, low-noise power to LTE modems, GNSS receivers, and secure boot ICs in cellular-connected vehicle modules. IC Role / Device Role / Timing Role: Dual-channel regulator with external SYNC pin synchronized to system clock to avoid AM band interference. Use Value: MeshConnect™ flip-chip packaging and 2.3MHz operation place switching harmonics outside AM radio band (530–1710kHz). | Use Scenario: Enabling handheld diagnostic tools with battery-backed operation and rapid wake-up from deep sleep states. IC Role / Device Role / Timing Role: Low-IQ (100μA) buck converter powering MCU and sensors during standby, with fast soft-start on wake-up. Use Value: Internal soft-start and PG outputs allow deterministic power sequencing and system-level fault reporting without external logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ2169BGU-AEC1-Z | Single-channel, 4A output; no dual-rail capability; same 2.7–6V input and 0.6V reference. | Suitable only where single high-current rail replaces dual moderate-current rails. | Select when total load exceeds 3A and rail separation is unnecessary. |
| TPS65023BRSBR | Triple-channel (2×DC/DC + LDO); 2.25–6.5V input; 0.6V reference; non-AEC-Q100. | Lacks automotive qualification; includes integrated LDO but higher quiescent current (80μA vs. 100μA). | Consider for non-automotive portable instrumentation needing mixed rail types. |
Compared with MPQ2166BGRHE-AEC1-P, MPQ2169BGU-AEC1-Z trades dual-rail flexibility for higher single-rail current, while TPS65023BRSBR adds an LDO but omits AEC-Q100 compliance-making MPQ2166BGRHE-AEC1-P uniquely suited for dual-rail automotive applications requiring grade-qualified reliability and thermal efficiency.
Availability
MPQ2166BGRHE-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment, instrument clusters, and telematics control units requiring stable component supply with AEC-Q100 Grade 1 assurance and long-term production continuity.
Supply support for MPQ2166BGRHE-AEC1-P 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
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs, with over two decades of innovation in DC/DC conversion, motor drivers, and LED lighting solutions.
The MPQ2166B belongs to MPS's automotive-grade synchronous buck regulator product line, designed specifically for space-constrained, thermally demanding automotive subsystems requiring high efficiency, low EMI, and AEC-Q100 compliance.
FAQ
What is the maximum supported switching frequency and how is it set?
The MPQ2166BGRHE-AEC1-P supports up to 2.59MHz switching frequency, set by connecting a resistor between the FREQ pin and ground. A 75kΩ resistor yields ~2.3MHz operation; values from 51kΩ to 665kΩ cover 350kHz–3MHz range. External SYNC can override this setting within 0.35–3MHz.
Can both channels operate at different output voltages and currents simultaneously?
Yes - each channel has independent FB, SS, EN, and PG pins, enabling distinct output voltages (e.g., 1.1V and 3.3V) and current allocations (e.g., 3A/1A or 2A/2A). The internal MOSFETs are rated for 4.8A peak per channel, supporting asymmetric loading.
Is external compensation required for stable operation?
No - the MPQ2166BGRHE-AEC1-P uses internally compensated peak-current-mode control, eliminating external compensation components. Stability is maintained across all valid output capacitor ESR ranges and load conditions specified in the datasheet.
How does the 100% duty cycle mode function during low-input conditions?
When VIN approaches VOUT, the controller extends the high-side FET on-time beyond one switching cycle, effectively operating in dropout mode. At 100% duty cycle, regulation relies on RDS(ON) of the 55mΩ HS-FET and inductor DCR, maintaining output until current limit or thermal shutdown intervenes.
What thermal performance can be expected in a standard 4-layer PCB layout?
On a 4-layer 6.35cm×6.35cm evaluation board with 2oz copper, the MPQ2166BGRHE-AEC1-P shows ≤18°C case temperature rise at 2A/2A, 5V input, and 2.3MHz switching - confirming suitability for compact automotive modules without forced airflow.
Does the device support power sequencing between channels?
Yes - independent EN1/EN2 and SS1/SS2 pins allow precise control of startup order and ramp rates. PG1/PG2 status signals can feed back to system controllers to coordinate downstream power-up, satisfying ASIL-B sequencing requirements in cluster designs.
What protection features are implemented and how do they respond to faults?
Features include cycle-by-cycle current limiting (4.8A HS-FET limit), hiccup-mode OCP on sustained short circuits, thermal shutdown at 175°C, and UVLO (2.55V). PG deassertion occurs within 40μs of FB dropping to 82% VREF, enabling fast system-level fault isolation.
MPQ2166BGRHE-AEC1-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 18-PowerVFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 2A/2A, 3A/1A
- Frequency - Switching:
- 350kHz ~ 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 18-QFN (2.5x3.5)
MPQ2166BGRHE-AEC1-P FAQ
1.How can I place an order for MPQ2166BGRHE-AEC1-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MPQ2166BGRHE-AEC1-P 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 MPQ2166BGRHE-AEC1-P reliable?
The price and inventory of MPQ2166BGRHE-AEC1-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MPQ2166BGRHE-AEC1-P is usually 5 days.
3.What payment methods are accepted for MPQ2166BGRHE-AEC1-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MPQ2166BGRHE-AEC1-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MPQ2166BGRHE-AEC1-P?
MPQ2166BGRHE-AEC1-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MPQ2166BGRHE-AEC1-P 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 MPQ2166BGRHE-AEC1-P?
For technical support, including MPQ2166BGRHE-AEC1-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MPQ2166BGRHE-AEC1-P requirements.
6.How does Aetrix verify that MPQ2166BGRHE-AEC1-P is sourced from the original manufacturer or authorized distributors?
All MPQ2166BGRHE-AEC1-P 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 MPQ2166BGRHE-AEC1-P meets industry standards.
7.What is the process for return or replacement of MPQ2166BGRHE-AEC1-P?
All MPQ2166BGRHE-AEC1-P units undergo pre-shipment inspection (PSI). If there is an issue with MPQ2166BGRHE-AEC1-P, 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 MPQ2166BGRHE-AEC1-P part is unused and in its original packaging.
Return procedure for MPQ2166BGRHE-AEC1-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MPQ2166BGRHE-AEC1-P 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…
