My Inquiry
My Account
Microchip Technology MIC23159YML-T5
- Part No.:
- MIC23159YML-T5
- Manufacturer:
- Microchip Technology
- Package:
- 20-VFQFN Exposed Pad, 20-MLF®
- Datasheet:
-
MIC23159YML-T5.pdf
- Description:
- IC REG BUCK ADJ 2A DL 20MLF
- Quantity:
- Payment:
- Shipping:
Inventory:2,603
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MIC23159YML-T5 from Microchip Technology is a dual-channel, 2A synchronous buck regulator with HyperLight Load® operation, adjustable output voltage down to 1.0V, 3 MHz PWM switching, and integrated 225Ω auto-discharge on SNS pins. It delivers up to 94% peak efficiency, supports –40°C to +125°C junction temperature, and targets core power delivery in space-constrained portable electronics.
For engineers reviewing the MIC23159YML-T5 datasheet, MIC23159YML-T5 pinout, MIC23159YML-T5 application, or MIC23159YML-T5 equivalent, this page provides verified technical context, validated pin functions, confirmed dual-output regulation behavior, exact package mapping to 20-pin 3 mm × 4 mm QFN, and two rigorously cross-checked alternative parts for SSD and mobile processor power rails.
Technical Context
The MIC23159YML-T5 implements a proprietary HyperLight Load® control architecture that dynamically transitions between discontinuous conduction mode (DCM) at light loads and continuous conduction mode (CCM) above ~180 mA per channel, enabling 83% efficiency at 1 mA and 94% at full load. Each channel features independent soft-start, power-good indicators, and internal MOSFETs with 0.20 Ω PMOS and 0.19 Ω NMOS RDS(ON).
It integrates an auto-discharge function active only on the MIC23159 variant: when EN = 0 V, a 225 Ω pull-down is switched between SNS and AGND to safely discharge output capacitors. The device uses separate analog (AVIN/AGND) and power (VIN/PGND) supply and ground paths to minimize noise coupling into feedback loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion and USB-powered systems without external LDO pre-regulation. |
| Output Current per Channel | 2 A continuous - sufficient for dual-core application processors or high-speed memory I/O rails. |
| Switching Frequency | 3 MHz fixed - enables use of sub-1 µH inductors (down to 0.47 µH) and compact 2.2 µF ceramic output capacitors. |
| Feedback Reference Voltage | 0.62 V ±1.2% - sets output voltage via resistor divider; enables precise 1.0 V–3.3 V adjustment with <1% load regulation error. |
| Quiescent Current | 45 µA typical - maintains ultra-low standby power in always-on subsystems such as modem or sensor hubs. |
| Shutdown Current | 0.1 µA - reduces system-level leakage during deep sleep modes, critical for battery runtime. |
| Output Discharge Resistance | 225 Ω - actively discharges output capacitance when disabled, preventing floating voltages and enabling safe hot-swap sequencing. |
| Junction Temperature Range | –40°C to +125°C - qualified for automotive infotainment and industrial handheld environments. |
Pinout & Package
Package: 20-pin 3 mm × 4 mm QFN with exposed thermal pad (ePAD), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1, VIN2 | Power input for Channel 1 and 2 | Accepts 2.7–5.5 V; requires local 2.2 µF ceramic bypass to PGND per channel. |
| SW1, SW2 | Switch node outputs | Drive external inductors; high dv/dt nodes requiring tight layout and isolation from sensitive traces. |
| SNS1, SNS2 | Output voltage sense inputs | Direct connection to output capacitor anode; also serve as discharge path for MIC23159's 225 Ω pull-down when disabled. |
| FB1, FB2 | Feedback inputs | Compare output voltage against 0.62 V internal reference; set VOUT via resistor divider (e.g., 301 kΩ/158 kΩ for 1.8 V). |
| EN1, EN2 | Independent enable inputs | Logic-high (>1.2 V) activates channel; logic-low (<0.4 V) disables with 0.1 µA shutdown current. |
| PG1, PG2 | Open-drain power-good outputs | Assert high when VOUT ≥ 92% of target; require external pull-up to respective VOUT (min. 5 kΩ). |
| SS1, SS2 | Soft-start timing inputs | Connect ≥200 pF capacitor to AGND to control output ramp time (e.g., 470 pF → ~300 µs). |
| AVIN1, AVIN2 | Analog supply inputs | Must be tied to corresponding VIN pins; decoupled with 1 µF ceramic cap for low-noise biasing of control circuitry. |
| AGND1, AGND2 | Analog ground returns | Separate from PGND; connect to central star ground point near CIN/COUT to avoid noise injection into feedback paths. |
| PGND1, PGND2 | Power ground returns | High-current return paths for MOSFET switching; route with minimal loop area and tie to ePAD for thermal relief. |
| ePAD | Exposed thermal pad | Must be soldered to PCB copper pour connected to PGND; primary thermal conduction path (θJA = 53°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 2A buck regulators | Enables simultaneous, isolated power rails for CPU cores and I/O domains without external controllers or sequencing ICs. |
| HyperLight Load® architecture | Maintains >83% efficiency at 1 mA while delivering ultra-fast transient response (<10 µs recovery from 200 mA → 1.5 A step load). |
| Integrated 225 Ω output discharge (MIC23159 only) | Eliminates need for external discharge FETs or resistors, reducing BOM count and board area in portable designs. |
| Independent programmable soft-start | Prevents inrush current and output overshoot via external capacitor; supports staggered startup for multi-rail systems. |
| Two dedicated power-good indicators | Provide real-time status per channel for system-level power sequencing and fault detection without software polling. |
| 3 mm × 4 mm QFN with 20 pins | Reduces total solution footprint to <15 mm² per channel and enables height-constrained applications (<1 mm profile with 0.47 µH inductor). |
Applications
| Solid State Drive (SSD) Power Management | Smartphone Application Processor Core Rail |
|---|---|
Use Scenario: Dual-rail power delivery for NAND flash controller and DRAM buffer in M.2/U.2 SSD modules. IC Role / Device Role / Timing Role: Primary DC/DC converter supplying 1.2 V core and 1.8 V I/O rails with independent enable and power-good signaling. Use Value: 94% peak efficiency and 45 µA quiescent current extend battery-backed write-cache endurance; 225 Ω auto-discharge prevents data corruption during sudden power loss. | Use Scenario: Core voltage regulation for dual-core ARM Cortex-A series SoCs in premium smartphones. IC Role / Device Role / Timing Role: High-efficiency, fast-transient buck regulator delivering 1.0–1.3 V core voltage with dynamic voltage scaling support. Use Value: HyperLight Load® sustains >85% efficiency at 10–100 mA idle states; 3 MHz switching allows use of 0.47 µH inductors, shrinking total solution size by 35% vs. 1 MHz alternatives. |
| Tablet PC Memory Interface Supply | Wi-Fi/Bluetooth Combo Module Power |
Use Scenario: Dedicated 1.8 V/2.5 V supply for LPDDR4 memory interfaces in 7–10 inch tablets. IC Role / Device Role / Timing Role: Dual-output regulator powering memory VDDQ and VDDIO rails with matched soft-start and independent PG monitoring. Use Value: Independent SS1/SS2 pins allow controlled ramp timing to meet JEDEC tINIT requirements; <0.8% load regulation ensures signal integrity across 0–2 A load steps. | Use Scenario: Compact dual-rail supply for 2.4 GHz/5 GHz Wi-Fi 6 and Bluetooth 5.2 combo ICs in ultraportable devices. IC Role / Device Role / Timing Role: Regulator providing 3.3 V RF PA bias and 1.2 V digital core voltage with fast line/load transient response. Use Value: Ultra-fast transient recovery (<5 µs) suppresses RF EVM degradation during burst transmission; 20-pin QFN fits within 3 mm × 4 mm PCB keep-out zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65217CRSLR | Single-chip PMIC with dual 2A bucks + LDOs + battery charger; larger 32-pin QFN (4 mm × 4 mm); no auto-discharge on SNS pins. | Targeted at full-system power management (SoC + memory + peripherals); not optimized for standalone dual-rail discrete use. | Select when integrating battery charging, fuel gauging, or multiple LDOs is required; avoid if minimal BOM and auto-discharge are mandatory. |
| RTQ2132BGQW | Dual 2A buck with 2.5 MHz switching, 0.6 V reference, but no integrated auto-discharge; requires external discharge circuit for MIC23159-equivalent functionality. | Designed for industrial IoT gateways; lacks HyperLight Load®-efficiency drops to 72% at 1 mA vs. MIC23159YML-T5's 83%. | Select for cost-sensitive industrial applications where auto-discharge is handled externally; avoid for battery-critical portable designs requiring guaranteed discharge. |
Compared with TPS65217CRSLR and RTQ2132BGQW, the MIC23159YML-T5 uniquely combines dual 2A channels, 3 MHz operation, HyperLight Load® efficiency at microamp loads, and integrated 225 Ω auto-discharge in a minimal 3 mm × 4 mm footprint-making it optimal for space- and battery-constrained portable SSDs and smartphones where discrete rail control and safe shutdown are essential.
Availability
MIC23159YML-T5 is available at Aetrix Electronics and suitable for solid state drives, smartphone application processors, and tablet memory interfaces requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for MIC23159YML-T5 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 provider of microcontrollers, analog, FPGA, and power management semiconductors, serving automotive, industrial, communications, and consumer markets with vertically integrated design and manufacturing.
The MIC23159YML-T5 belongs to Microchip's HyperLight Load® synchronous buck regulator product line, engineered specifically for high-efficiency, ultra-compact core and I/O power delivery in battery-powered portable electronics with stringent transient and standby power requirements.
FAQ
What distinguishes MIC23159YML-T5 from the MIC23158 variant?
The MIC23159YML-T5 integrates a 225 Ω internal pull-down resistor between SNS and AGND that activates during shutdown to discharge output capacitors-a feature absent in the MIC23158. This eliminates external discharge components and ensures safe hot-swap and power-loss sequencing. All other electrical specifications, pinout, and package are identical between MIC23159YML-T5 and MIC23158YML-T5.
Does MIC23159YML-T5 support independent voltage setting for each output?
Yes, MIC23159YML-T5 supports fully independent output voltage configuration via separate FB1/FB2 pins and resistor dividers. Each channel regulates to its own target (1.0 V–3.3 V) using the internal 0.62 V reference. The datasheet provides recommended resistor values-for example, 301 kΩ/158 kΩ sets VOUT1 = 1.8 V, while 316 kΩ/221 kΩ sets VOUT2 = 1.5 V-enabling asymmetric rail generation.
What is the minimum output capacitor value supported by MIC23159YML-T5?
MIC23159YML-T5 is designed to operate stably with a minimum 2.2 µF ceramic output capacitor per channel. Using smaller values risks instability and excessive ripple; larger values (e.g., 4.7 µF) improve transient response and reduce ripple but increase solution size and cost. X5R or X7R dielectrics are recommended for temperature stability.
How does the HyperLight Load® mode affect efficiency at light loads?
In HyperLight Load® mode, MIC23159YML-T5 achieves 83% efficiency at 1 mA per channel-significantly higher than conventional 3 MHz buck regulators (~50–60%). This is accomplished by entering discontinuous conduction mode with variable frequency and minimum on/off times, reducing switching and gate-drive losses while maintaining ultra-fast transient response and low output ripple.
Can MIC23159YML-T5 operate with input voltages below 2.7 V?
No, MIC23159YML-T5 has a specified minimum input voltage of 2.7 V. Operation below this threshold violates Absolute Maximum Ratings and may cause undervoltage lockout (UVLO) activation at 2.45 V (rising) with 75 mV hysteresis. For sub-2.7 V inputs, a different regulator family-such as Microchip's MIC24045-must be selected.
MIC23159YML-T5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- HyperLight Load®
- Package/Case:
- 20-VFQFN Exposed Pad, 20-MLF®
- 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):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 3.3V
- Current - Output:
- 2A
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-MLF® (3x4)
MIC23159YML-T5 FAQ
1.How can I place an order for MIC23159YML-T5 through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23159YML-T5 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 MIC23159YML-T5 reliable?
The price and inventory of MIC23159YML-T5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23159YML-T5 is usually 5 days.
3.What payment methods are accepted for MIC23159YML-T5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23159YML-T5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23159YML-T5?
MIC23159YML-T5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23159YML-T5 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 MIC23159YML-T5?
For technical support, including MIC23159YML-T5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23159YML-T5 requirements.
6.How does Aetrix verify that MIC23159YML-T5 is sourced from the original manufacturer or authorized distributors?
All MIC23159YML-T5 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 MIC23159YML-T5 meets industry standards.
7.What is the process for return or replacement of MIC23159YML-T5?
All MIC23159YML-T5 units undergo pre-shipment inspection (PSI). If there is an issue with MIC23159YML-T5, 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 MIC23159YML-T5 part is unused and in its original packaging.
Return procedure for MIC23159YML-T5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC23159YML-T5 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…
