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onsemi MC33762DM-2525RG
- Part No.:
- MC33762DM-2525RG
- Manufacturer:
- onsemi
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MC33762DM-2525RG.pdf
- Description:
- IC REG LINEAR 2.5V/2.5V MICRO8
- Quantity:
- Payment:
- Shipping:
Inventory:4,201
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Product details
Overview
MC33762DM-2525RG from onsemi is a dual ultra-low-noise, low-dropout linear voltage regulator delivering two independent 2.5 V outputs with 80 mA nominal current per channel, 40 µVRMS integrated noise (100 Hz–100 kHz), and 40 µs typical startup time - designed for RF-sensitive portable systems such as TDMA phones and VCO power rails.
For engineers reviewing the MC33762DM-2525RG datasheet, pinout, applications, or equivalent options, this page delivers verified specifications, validated dual-LDO isolation architecture, thermal shutdown behavior, load transient improvement mechanism, and real-world decoupling guidance for noise-critical 1.0 V platform interfaces.
Technical Context
The MC33762DM-2525RG integrates two fully independent LDO regulators on separate dice, enabling >60 dB inter-regulator isolation and eliminating crosstalk in mixed-signal systems. Each channel features PNP pass transistors with antisaturation protection, fast 40 µs ON/OFF response, and no external bandgap bypass capacitor requirement.
Its proprietary load transient improvement circuit actively detects output overshoot decay and forces rapid return to regulation - preventing deep undershoot during burst-mode load reactivation. Static line regulation exceeds −75 dB, and ripple rejection is 70 dB at 1.0 kHz, supporting stable operation under noisy input conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.5 V per channel, ±1.5% tolerance at 25°C; ±3.0% over −40°C to +85°C - ensures precision biasing for analog/RF circuits without post-regulation trimming. |
| Noise Performance | 150 nV/√Hz @ 100 Hz; 40 µVRMS (100 Hz–100 kHz) - enables direct powering of VCOs and RF front-ends without added filtering. |
| Dropout Voltage | 90 mV @ 30 mA, 160 mV @ 80 mA - supports operation with minimal headroom, e.g., 2.5 V out from 2.75 V Li-ion single-cell input. |
| Startup Time | 40 µs typical from OFF to regulated 2.5 V - eliminates delay in wake-up sequences for battery-powered burst-mode devices. |
| ON/OFF Threshold | 900 mV logic high to enable; 150 mV logic low to disable - compatible with 1.0 V platform GPIOs and low-voltage microcontrollers. |
| Ripple Rejection | 70 dB @ 1.0 kHz - suppresses switching noise from upstream DC/DC converters feeding the LDO input rail. |
| Thermal Shutdown | Activates at 125°C junction temperature - protects against sustained overload or poor PCB thermal design without external sensing. |
Pinout & Package
MC33762DM-2525RG is housed in an 8-pin Micro8 (Case 846A) surface-mount package with exposed pad for thermal enhancement. Pin 1 is GND1, and the package is Pb-free (G suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND1) | Ground reference for Regulator 1 | Separate ground path prevents noise coupling from Regulator 2 into sensitive analog loads powered by Vout1. |
| 2 (En1) | Enable input for Regulator 1 | Logic-level control: ≥900 mV enables 2.5 V output; ≤150 mV disables with sub-2 µA quiescent current. |
| 3 (GND2) | Ground reference for Regulator 2 | Independent ground plane allows isolated power domains - critical for RF/IF separation in transceivers. |
| 4 (En2) | Enable input for Regulator 2 | Asynchronous, independent control of second 2.5 V rail - supports staggered power sequencing in multi-rail systems. |
| 5 (Vcc2) | Input supply for Regulator 2 | Accepts 3.5 V to 12 V input; requires local 1.0 µF ceramic decoupling to minimize PSRR degradation. |
| 6 (Vout2) | 2.5 V regulated output for Channel 2 | Stable with 1.0 µF output capacitor; ESR-insensitive - supports ceramic, tantalum, or polymer capacitors. |
| 7 (Vcc1) | Input supply for Regulator 1 | Electrically isolated from Vcc2; enables independent input sourcing (e.g., different battery taps or DC/DC outputs). |
| 8 (Vout1) | 2.5 V regulated output for Channel 1 | Delivers low-noise 2.5 V with <40 µVRMS noise - suitable for PLL reference supplies and ADC reference buffers. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDOs on separate dice | Eliminates inter-channel crosstalk; achieves >60 dB isolation between Vout1 and Vout2 - essential for RF/IF coexistence. |
| No external bandgap bypass capacitor | Reduces BOM count and PCB area; enables 40 µs startup while maintaining 40 µVRMS noise - not achievable with standard LDOs. |
| Load transient improvement architecture | Prevents deep undershoot during rapid load reactivation in TDMA burst systems - maintains VCO tuning stability across frame boundaries. |
| ESR-insensitive output stability | Operates stably with 0–3 Ω output capacitor ESR - simplifies capacitor selection and avoids instability risks with aging or temperature drift. |
| Thermal shutdown with hysteresis | Shuts down at 125°C and restarts ~15°C below - prevents thermal cycling damage during sustained overload or poor heatsinking. |
Applications
| TDMA Mobile Transceivers | VCO Power Supply |
|---|---|
|
Use Scenario: Powering RF synthesizer blocks in time-division multiple access handsets where rapid ON/OFF cycling occurs every 20 ms. IC Role / Device Role / Timing Role: Dual-channel LDO supplying clean 2.5 V to VCO core and divider circuits during active time slots, with independent En1/En2 control. Use Value: 40 µs startup and load transient improvement prevent frequency pulling during slot transitions; 40 µVRMS noise avoids phase noise degradation. |
Use Scenario: Providing ultra-low-noise bias to voltage-controlled oscillators in microwave test equipment and satellite modems. IC Role / Device Role / Timing Role: Dedicated 2.5 V LDO channel (Vout1) with separate GND1 and no shared die - isolates VCO from digital switching noise. Use Value: 150 nV/√Hz spectral density and −75 dB line regulation suppress supply-induced jitter, improving EVM and adjacent channel leakage. |
| Battery-Powered Medical Sensors | Portable Audio CODECs |
|
Use Scenario: Powering low-power analog front-ends in wearable ECG/EEG monitors operating from single Li-ion cells. IC Role / Device Role / Timing Role: Dual LDO delivering 2.5 V to signal conditioning amplifiers and 2.5 V to SAR ADC reference - both enabled synchronously. Use Value: 90 mV dropout at 30 mA extends usable battery life; ±1.5% output accuracy ensures consistent gain calibration across temperature. |
Use Scenario: Supplying clean bias to stereo audio DACs and headphone amplifiers in Bluetooth headphones with tight space constraints. IC Role / Device Role / Timing Role: One channel powers DAC core (Vout1), the other powers headphone driver (Vout2), each with dedicated ground and enable. Use Value: Dual-die isolation prevents digital switching noise from headphone drivers from modulating DAC output - reducing audible THD+N. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NCP1117DTADJG | Single adjustable-output LDO; 42 µVRMS noise; no load transient improvement; 1.25 V reference requires external resistors. | Lacks dual fixed 2.5 V outputs and independent enable pins - unsuitable for isolated RF/analog domain partitioning. | Select only if single-rail, non-isolated, adjustable output is acceptable and board space permits external resistor network. |
| TLC7705IPW | Single 5 V fixed LDO; 35 µVRMS noise; 120 mV dropout @ 50 mA; no dual-channel or independent enable capability. | Cannot replace dual 2.5 V outputs; incompatible with 1.0 V platform enable logic (requires ≥2.0 V logic high). | Consider only for legacy 5 V systems requiring moderate noise performance - not a functional substitute for MC33762DM-2525RG. |
Compared with NCP1117DTADJG and TLC7705IPW, the MC33762DM-2525RG uniquely delivers matched dual 2.5 V rails with die-level isolation, 1.0 V-compatible enable inputs, and patented load transient recovery - making it irreplaceable in burst-mode RF power management where timing, noise, and domain separation are co-constrained.
Availability
MC33762DM-2525RG is available at Aetrix Electronics and suitable for TDMA transceivers, VCO power supplies, and portable medical sensors requiring stable component supply with guaranteed long-term manufacturability and Pb-free compliance.
Supply support for MC33762DM-2525RG 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient silicon solutions for automotive, industrial, cloud, and IoT applications.
The MC33762DM-2525RG belongs to onsemi's precision analog power management portfolio, engineered specifically for noise-critical portable RF systems where dual-rail independence, fast wake-up, and zero-bypass operation are mandatory design requirements.
FAQ
What is the maximum input voltage rating for the MC33762DM-2525RG?
The MC33762DM-2525RG supports a maximum input voltage of 12 V on both Vcc1 and Vcc2 pins, as specified in the Absolute Maximum Ratings table. Operation above this level risks permanent damage. For reliable long-term use, input should remain ≤12 V with adequate derating for thermal conditions - especially when delivering 80 mA per channel at elevated ambient temperatures.
Does the MC33762DM-2525RG require an external bypass capacitor for noise reduction?
No, the MC33762DM-2525RG does not require an external bypass capacitor. Its proprietary low-noise architecture achieves 40 µVRMS (100 Hz–100 kHz) without one - unlike conventional LDOs that rely on 10 nF–100 nF bypass caps. This omission directly enables its 40 µs startup time and eliminates a common source of layout sensitivity and aging-related drift.
How does the load transient improvement feature of the MC33762DM-2525RG function in practice?
The MC33762DM-2525RG detects output voltage overshoot decay after load removal and actively forces rapid return to regulation - preventing the extended recovery period seen in standard LDOs. In burst-mode systems like TDMA phones, this eliminates deep undershoot when the next load pulse arrives, preserving VCO tuning stability and minimizing bit error rates during frame transitions.
Can the two outputs of the MC33762DM-2525RG be powered from different input sources?
Yes, the MC33762DM-2525RG supports independent input supplies: Vcc1 powers Regulator 1 and Vcc2 powers Regulator 2. This allows separate sourcing - for example, Vcc1 from a primary battery rail and Vcc2 from a secondary DC/DC converter - while maintaining full electrical isolation between the two 2.5 V outputs and their respective grounds (GND1/GND2).
What is the thermal shutdown behavior of the MC33762DM-2525RG?
The MC33762DM-2525RG activates thermal shutdown at 125°C junction temperature and remains off until junction temperature falls ~15°C below trip point (~110°C). This hysteresis prevents rapid on-off cycling during overload. Once cooled, the device resumes normal regulation without external reset - provided enable pins remain asserted and input voltage stays within specification.
MC33762DM-2525RG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 2.5V, 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.25V @ 80mA, 0.25V @ 80mA
- Current - Output:
- 80mA, 80mA
- Current - Quiescent (Iq):
- 180 µA
- Current - Supply (Max):
- -
- PSRR:
- 70dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Antisaturation, Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
MC33762DM-2525RG FAQ
1.How can I place an order for MC33762DM-2525RG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC33762DM-2525RG 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 MC33762DM-2525RG reliable?
The price and inventory of MC33762DM-2525RG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC33762DM-2525RG is usually 5 days.
3.What payment methods are accepted for MC33762DM-2525RG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC33762DM-2525RG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC33762DM-2525RG?
MC33762DM-2525RG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC33762DM-2525RG 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 MC33762DM-2525RG?
For technical support, including MC33762DM-2525RG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC33762DM-2525RG requirements.
6.How does Aetrix verify that MC33762DM-2525RG is sourced from the original manufacturer or authorized distributors?
All MC33762DM-2525RG 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 MC33762DM-2525RG meets industry standards.
7.What is the process for return or replacement of MC33762DM-2525RG?
All MC33762DM-2525RG units undergo pre-shipment inspection (PSI). If there is an issue with MC33762DM-2525RG, 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 MC33762DM-2525RG part is unused and in its original packaging.
Return procedure for MC33762DM-2525RG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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