My Inquiry
My Account
Microchip Technology MIC23051-C4YML-TR
- Part No.:
- MIC23051-C4YML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 8-VFDFN Exposed Pad, 8-MLF®
- Datasheet:
-
MIC23051-C4YML-TR.pdf
- Description:
- IC REG BUCK 1.2V 600MA 8MLF
- Quantity:
- Payment:
- Shipping:
Inventory:2,518
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MIC23051-C4YML-TR from Microchip Technology is a 4 MHz synchronous buck (step-down) DC-DC regulator with HyperLight Load® architecture, delivering 600 mA output current at fixed 1.2 V (VSC high) or 1.0 V (VSC low) output voltages, operating from 2.7 V to 5.5 V input, and optimized for ultra-low quiescent current (20 µA typical) in portable power management applications such as USB-powered devices and wireless modules.
For engineers reviewing the MIC23051-C4YML-TR datasheet, MIC23051-C4YML-TR pinout, MIC23051-C4YML-TR application, or MIC23051-C4YML-TR equivalent, key selection considerations include voltage scaling capability between 1.0 V and 1.2 V, 4 MHz constant-frequency PWM operation, HyperLight Load® light-load efficiency (>85% at 1 mA), 2 mm × 2 mm DFN package constraints, and integrated SNS/CFF feedback architecture requiring no external resistors.
Technical Context
The MIC23051-C4YML-TR implements a proprietary HyperLight Load® control scheme combining minimum on-time/off-time pulse frequency modulation (PFM) at light loads and seamless transition to 4 MHz continuous conduction mode (CCM) PWM above ~100 mA. It uses internal PMOS/NMOS synchronous switches with RDS(ON) of 0.45 Ω (PMOS) and 0.5 Ω (NMOS), enabling high efficiency without external diodes.
Its dual-voltage operation is controlled by the VSC pin, which toggles regulated output between two factory-trimmed levels (1.2 V and 1.0 V). The device integrates error amplification, soft-start (650 µs), undervoltage lockout (2.55 V typ), and overtemperature shutdown (165°C) - all within an 8-pin 2 mm × 2 mm DFN with separate AGND/PGND and exposed thermal pad.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion, USB 5 V, and 3.3 V system rails without pre-regulation. |
| Output Voltage Options | 1.2 V (VSC = high) / 1.0 V (VSC = low) - factory-trimmed, no external feedback required. |
| Max Output Current | 600 mA - sufficient for core logic, RF transceivers, or sensor subsystems in compact portable designs. |
| Quiescent Current | 20 µA typical in HyperLight Load® mode - extends battery life in standby or sleep states. |
| Switching Frequency | 4 MHz nominal - enables use of sub-1 µH inductors (0.47–2.2 µH) and ultra-compact output filtering. |
| Output Ripple | 3 mVPP in full PWM mode - meets tight noise requirements for analog/RF circuitry. |
| Junction Temp Range | –40°C to +125°C - qualified for industrial and extended-temperature embedded applications. |
Pinout & Package
Package: 8-pin 2 mm × 2 mm DFN with exposed thermal pad (EP), RoHS-compliant, –40°C to +125°C junction rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch node output | Connects directly to inductor; carries high-frequency pulsed current - requires short, low-inductance routing. |
| 2 EN | Enable input | Logic-high active; 0.5–1.2 V threshold with 35 mV hysteresis - enables precise power sequencing control. |
| 3 VSC | Voltage scaling control | Logic-level input selecting 1.2 V (high) or 1.0 V (low) output - must be actively driven, not floating. |
| 4 SNS | Output voltage sense | Direct connection to VOUT; high-impedance input (<1 µA) - routed away from SW to avoid noise coupling. |
| 5 CFF | Feed-forward capacitor node | Connects to SNS via 560 pF capacitor; forms part of internal error amplifier compensation path. |
| 6 AGND | Analog ground reference | Reference for bias and control circuitry - isolated from PGND to prevent switching noise injection. |
| 7 VIN | Main power input | Supplies both power stage and analog circuits; requires ≥2.2 µF ceramic bypass close to PGND. |
| 8 PGND | Power ground return | High-current return path for MOSFETs - routed with minimal loop area and separated from AGND. |
Key Features
| Feature | Design Value |
|---|---|
| HyperLight Load® architecture | Enables >85% efficiency at 1 mA while maintaining ultra-fast transient response - eliminates trade-off between light-load efficiency and regulation speed. |
| Voltage scaling (VSC) | Dual-output capability (1.2 V ↔ 1.0 V) with <800 µs transition time - supports dynamic core voltage adjustment in low-power processors or memory. |
| Integrated CFF/SNS feedback | Eliminates external resistor divider; reduces BOM count and layout sensitivity - simplifies design and improves accuracy over temperature. |
| 4 MHz constant-frequency PWM | Allows use of 0.47 µH inductors and sub-1 mm height solutions - enables ultra-thin portable electronics and space-constrained PCBs. |
| Separate AGND/PGND pins | Minimizes noise coupling into control circuitry - critical for stable regulation under high di/dt load transients. |
Applications
| Cellular Phone Power Management | USB-Powered Peripheral Regulation |
|---|---|
Use Scenario: Regulating core voltage for baseband processor during active and deep-sleep modes. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing dynamically scaled 1.2 V / 1.0 V supply under VSC control. Use Value: Maintains >85% efficiency at 1 mA sleep current and delivers 600 mA peak for burst processing - extending battery runtime without compromising performance. |
Use Scenario: Powering Bluetooth/WiFi modules from 5 V USB bus with strict EMI and size constraints. IC Role / Device Role / Timing Role: Compact 4 MHz step-down converter generating clean 1.2 V rail with low 3 mVPP ripple. Use Value: Enables sub-1 mm profile solution using 0.47 µH inductor and 2.2 µF ceramic output cap - meeting USB portability and EMC requirements. |
| Wireless LAN Card Core Supply | Digital Camera Image Sensor Bias |
Use Scenario: Delivering stable 1.2 V to WLAN SoC with rapid load transitions during packet transmission. IC Role / Device Role / Timing Role: High-transient-response buck regulator leveraging HyperLight Load® for fast recovery from 10 mA → 500 mA steps. Use Value: Limits output droop to <25 mVPP in HyperLight Load® mode and <3 mVPP in full PWM - ensuring reliable digital communication. |
Use Scenario: Providing low-noise 1.0 V bias for CMOS image sensor analog front-end during exposure readout. IC Role / Device Role / Timing Role: Ultra-low-ripple voltage source with dedicated AGND/PGND separation and CFF-based noise rejection. Use Value: Achieves 3 mVPP output ripple in full PWM mode - reducing sensor readout noise and improving SNR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC23050-C4YML-TR | Same pinout and features but rated for 500 mA max output current; identical 1.2 V / 1.0 V scaling and 4 MHz operation. | Suitable where peak load remains ≤500 mA; lower current rating may reduce thermal margin in high-ambient environments. | Select MIC23050-C4YML-TR only if 500 mA suffices - verify worst-case thermal rise with 0.47 µH inductor and 125°C ambient. |
| TPS62231DRVR | 3 MHz fixed-frequency buck; 600 mA rating; 1.2 V / 1.0 V scaling via MODE pin; requires external feedback resistors. | Lacks HyperLight Load® - quiescent current is 25 µA (vs. 20 µA) and light-load efficiency drops below 80% at 1 mA. | Choose TPS62231DRVR only when TI ecosystem compatibility or external resistor tuning is required - expect higher light-load power loss. |
Compared with MIC23050-C4YML-TR, the MIC23051-C4YML-TR provides 100 mA higher current headroom and better thermal derating margin; versus TPS62231DRVR, it delivers superior light-load efficiency and integrated feedback, reducing component count and layout complexity.
Availability
MIC23051-C4YML-TR is available at Aetrix Electronics and suitable for cellular phones, USB-powered peripherals, and wireless LAN cards requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC23051-C4YML-TR 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
Microchip Technology is a global semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with a focus on reliability, low-power innovation, and embedded control solutions.
The MIC23051-C4YML-TR belongs to Microchip's HyperLight Load® buck regulator product line, designed specifically for space-constrained, battery-operated applications demanding high light-load efficiency, fast transient response, and minimal external components.
FAQ
What is the exact output voltage configuration of the MIC23051-C4YML-TR?
The MIC23051-C4YML-TR is factory-configured for dual-output voltage scaling: 1.2 V when the VSC pin is logic high, and 1.0 V when VSC is logic low. These values are trimmed and specified across –40°C to +125°C, with ±2.5% accuracy at 20 mA load. No external resistors are needed - the output voltages are fixed and internally set per the "C4" marking code in the part number.
Does the MIC23051-C4YML-TR require an external feedback resistor network?
No, the MIC23051-C4YML-TR does not require external feedback resistors. It uses an integrated SNS/CFF sensing architecture with internal reference (0.72 V) and feed-forward capacitor (560 pF), eliminating the need for a resistor divider. This reduces component count, saves board space, and improves voltage accuracy and temperature stability compared to traditional feedback topologies.
What inductor value is recommended for optimal performance with the MIC23051-C4YML-TR?
A 1 µH inductor is recommended for balanced performance across efficiency, transient response, and output ripple with the MIC23051-C4YML-TR. The device supports 0.47 µH to 2.2 µH; 0.47 µH improves transient speed but increases peak current and ripple, while 2.2 µH lowers ripple and improves heavy-load efficiency at the cost of slower response. All values must be rated for ≥2 A saturation current.
How does the HyperLight Load® mode improve efficiency at light loads for the MIC23051-C4YML-TR?
HyperLight Load® mode in the MIC23051-C4YML-TR uses a minimum on-time/off-time PFM scheme that activates only when needed to maintain regulation - reducing switching losses and gate drive current. This achieves >85% efficiency at 1 mA output, versus <70% for conventional PWM regulators at the same load, while preserving fast transient recovery without sacrificing control loop bandwidth.
Can the MIC23051-C4YML-TR operate with a 2.5 V input supply?
No, the MIC23051-C4YML-TR has a minimum input voltage of 2.7 V per its absolute operating rating and UVLO turn-on threshold of 2.45–2.65 V. At 2.5 V input, the device will remain in undervoltage lockout and will not regulate. For 2.5 V input applications, consider alternative regulators with lower VIN minima, such as the MIC24045 or similar.
MIC23051-C4YML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- HyperLight Load®
- Package/Case:
- 8-VFDFN Exposed Pad, 8-MLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MLF® (2x2)
MIC23051-C4YML-TR FAQ
1.How can I place an order for MIC23051-C4YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23051-C4YML-TR 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 MIC23051-C4YML-TR reliable?
The price and inventory of MIC23051-C4YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23051-C4YML-TR is usually 5 days.
3.What payment methods are accepted for MIC23051-C4YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23051-C4YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23051-C4YML-TR?
MIC23051-C4YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23051-C4YML-TR 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 MIC23051-C4YML-TR?
For technical support, including MIC23051-C4YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23051-C4YML-TR requirements.
6.How does Aetrix verify that MIC23051-C4YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC23051-C4YML-TR 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 MIC23051-C4YML-TR meets industry standards.
7.What is the process for return or replacement of MIC23051-C4YML-TR?
All MIC23051-C4YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC23051-C4YML-TR, 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 MIC23051-C4YML-TR part is unused and in its original packaging.
Return procedure for MIC23051-C4YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC23051-C4YML-TR 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
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…
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…
