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Vishay Siliconix SIP21106DR-12-E3
- Part No.:
- SIP21106DR-12-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SIP21106DR-12-E3.pdf
- Description:
- IC REG LINEAR 1.2V 150MA SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,133
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Product details
Overview
SIP21106DR-12-E3 from Vishay Siliconix is a fixed-output 1.2 V, 150 mA low-noise LDO voltage regulator in SC70-5L package. It features 135 mV dropout at full load, 60 µV(rms) output noise (10 Hz–100 kHz), 1.0 % output accuracy at 25 °C, and ultra-low 35 µA ground current at 1 mA load-designed for battery-powered RF systems requiring quiet, stable bias.
For engineers reviewing the SIP21106DR-12-E3 datasheet, SIP21106DR-12-E3 pinout, SIP21106DR-12-E3 application, or SIP21106DR-12-E3 equivalent, key selection criteria include dropout performance under 150 mA load, SC70-5L thermal derating (3.4 mW/°C above 70 °C), BP pin bypass capacitor requirement (10 nF), and absence of POK or adjustable feedback functionality.
Technical Context
The SIP21106DR-12-E3 uses a P-channel MOSFET pass transistor with 0.9 Ω typical on-resistance and a 1.2 V bandgap reference. Its error amplifier compares feedback voltage against this reference to regulate output, enabling fast transient response and stable operation with only 1 µF ceramic output capacitance.
Shutdown is controlled via EN pin (logic-low threshold ≤0.4 V), triggering auto-discharge through a 100 Ω internal NMOS. The BP pin provides dedicated noise filtering-requiring a 10 nF capacitor to ground-and is not present in SiP21107 (POK) or SiP21108 (Adj) variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±2.5 % over -40 °C to +85 °C ambient-ensures stable core logic or sensor bias without external resistors. |
| Dropout Voltage | 135 mV at 150 mA load-enables regulation down to VIN = 1.335 V, extending usable battery range in single-cell Li-ion or alkaline systems. |
| Output Noise | 60 µV(rms), 10 Hz–100 kHz bandwidth with 10 nF BP capacitor-meets stringent RF LNA and PLL supply noise requirements. |
| Ground Current | 35 µA typical at 1 mA load-minimizes quiescent drain during light-load standby in portable devices. |
| Shutdown Current | ≤1 µA maximum at 85 °C-preserves battery life during deep sleep modes. |
| Thermal Protection | 160 °C junction shutdown with 20 °C hysteresis-prevents permanent damage during sustained overload or poor PCB heat sinking. |
| Package | SC70-5L (2.1 mm × 2.1 mm × 0.95 mm)-supports high-density layouts while limiting power dissipation to 187 mW at TA = 70 °C. |
Pinout & Package
SC70-5L package: 2.1 mm × 2.1 mm × 0.95 mm, lead-free, RoHS-compliant, rated for -40 °C to +85 °C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | Active-high control: ≥1.2 V enables regulation; ≤0.4 V disables output and activates 100 Ω auto-discharge path. |
| 2 (GND) | Power ground | Primary thermal and electrical return-must connect to large copper plane for thermal derating compliance (3.4 mW/°C above 70 °C). |
| 3 (VIN) | Input supply | Accepts 2.2 V to 6 V; requires 1 µF low-ESR ceramic bypass capacitor placed adjacent to pin. |
| 4 (VOUT) | Regulated output | Delivers fixed 1.2 V up to 150 mA; stable with ≥1 µF ceramic output capacitor (6 nF/mA minimum). |
| 5 (BP) | Noise bypass | Connects to 10 nF ceramic capacitor to ground-reduces output noise by filtering reference and error amp noise sources. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise architecture | 60 µV(rms) output noise with 10 nF BP capacitor-enables use in RF front-end biasing where PSRR alone is insufficient. |
| P-channel pass transistor | 0.9 Ω typical RDS(on) eliminates base-drive current loss-delivers higher efficiency than PNP-based LDOs at light loads. |
| Auto-discharge on shutdown | 100 Ω internal NMOS discharges 1 µF output cap in <1 ms-prevents residual voltage from interfering with system reset sequencing. |
| Stable with small ceramics | Guaranteed stability with 1 µF X7R/Y7R output capacitor-reduces BOM count and board area vs. tantalum or larger MLCC solutions. |
| Full industrial temperature range | Specified from -40 °C to +85 °C ambient-validates performance in handheld, automotive accessory, and industrial sensor environments. |
Applications
| Cellular Phone RF Subsystem | Portable Medical Sensor Node |
|---|---|
Use Scenario: Powering LNA and mixer stages in GSM/UMTS transceivers where supply ripple directly impacts EVM and adjacent channel leakage. IC Role / Device Role / Timing Role: Low-noise 1.2 V bias rail for analog RF signal chain components. Use Value: 60 µV(rms) noise floor prevents degradation of receiver sensitivity and maintains ACLR compliance without additional LC filtering. | Use Scenario: Supplying ultra-low-power biosignal amplifiers (ECG, pulse oximetry) operating from coin-cell batteries for multi-day wearable monitoring. IC Role / Device Role / Timing Role: Primary regulated supply for precision analog front-end and microcontroller core. Use Value: 35 µA ground current at 1 mA load extends battery life beyond 300 hours; 135 mV dropout enables full utilization of 1.5 V alkaline cell voltage range. |
| Digital Camera Image Sensor Bias | Industrial IoT Edge Controller |
Use Scenario: Providing clean 1.2 V supply to CMOS image sensor digital core and ADC reference circuitry during burst capture mode. IC Role / Device Role / Timing Role: Fixed-voltage LDO delivering stable digital rail independent of battery sag during high-current LED flash charging. Use Value: Fast 70 µs turn-on time ensures immediate regulation after wake-up; 1 µF output capacitor meets space constraints on compact camera modules. | Use Scenario: Regulating 1.2 V for ARM Cortex-M4 microcontroller core in battery-backed industrial gateways deployed in uncontrolled ambient environments. IC Role / Device Role / Timing Role: Primary core voltage regulator with thermal protection and wide-input capability. Use Value: 160 °C thermal shutdown prevents latch-up in enclosed enclosures; -40 °C to +85 °C rating ensures reliability across factory floor temperature swings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1202E/TT | 150 mA max, 170 mV dropout at 150 mA, 30 µV(rms) noise (no BP pin), SC70-5 package | Lacks dedicated noise-bypass pin-requires careful layout and larger output caps to match SIP21106DR-12-E3 noise performance | Select when lowest possible quiescent current (1.6 µA) is prioritized over guaranteed low-noise performance at full load. |
| Torex XC6206P122MR-G | 150 mA max, 250 mV dropout at 150 mA, 40 µV(rms) noise, SOT-25 package | Higher dropout and different pinout-requires PCB redesign; no BP pin or auto-discharge function | Select when cost sensitivity outweighs need for ultra-low dropout and integrated discharge path in space-constrained designs. |
Compared with MCP1700T-1202E/TT and XC6206P122MR-G, SIP21106DR-12-E3 uniquely combines 135 mV dropout, 60 µV(rms) noise with BP pin, and 100 Ω auto-discharge-making it optimal for RF and battery-critical applications where both efficiency and spectral purity are non-negotiable.
Availability
SIP21106DR-12-E3 is available at Aetrix Electronics and suitable for cellular phone RF subsystems, portable medical sensor nodes, digital camera image sensor bias, and industrial IoT edge controllers requiring stable component supply despite end-of-life status.
Supply support for SIP21106DR-12-E3 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
Vishay Siliconix designs high-performance discrete semiconductors and power ICs, emphasizing reliability, thermal efficiency, and application-specific integration for demanding power management tasks.
The SiP21106 series targets portable electronics requiring ultra-low-noise, low-quiescent LDOs with minimal external components-specifically addressing RF, sensor, and microcontroller core supply challenges in space- and battery-constrained systems.
FAQ
What is the maximum input voltage rating for SIP21106DR-12-E3?
The absolute maximum input voltage for SIP21106DR-12-E3 is 6.5 V relative to GND. Operation above 6 V is outside the recommended range (2.2 V to 6 V) and may accelerate parametric drift or reduce long-term reliability, especially at elevated temperatures. Always maintain VIN within 2.2 V to 6 V for full specification compliance.
Does SIP21106DR-12-E3 require an external bypass capacitor on the BP pin?
Yes, SIP21106DR-12-E3 requires a 10 nF ceramic capacitor connected between the BP pin and GND to achieve its specified 60 µV(rms) output noise performance. Omitting this capacitor increases noise to ~350 µV(rms), matching the SiP21107/SiP21108 variants. Larger values (>50 nF) are not recommended due to startup timing effects.
Can SIP21106DR-12-E3 be used with a 1 µF output capacitor?
Yes, SIP21106DR-12-E3 is fully stable with a 1 µF X7R or Y7R ceramic output capacitor, as confirmed in the datasheet's Application Information section. This value satisfies the 6 nF/mA minimum requirement for 150 mA load and ensures adequate phase margin across -40 °C to +85 °C.
What is the thermal derating behavior of SIP21106DR-12-E3 in SC70-5L package?
SIP21106DR-12-E3 in SC70-5L has a thermal derating factor of 3.4 mW/°C above TA = 70 °C. Its maximum package power dissipation drops from 187 mW at 70 °C to 119 mW at 85 °C ambient-requiring careful attention to PCB copper area and ambient airflow in thermally constrained designs.
Is SIP21106DR-12-E3 still in active production?
No, SIP21106DR-12-E3 is End of Life per Vishay documentation (Last Available Purchase Date: 31-Dec-2014). Aetrix Electronics maintains legacy inventory with traceable sourcing and supports lifecycle availability coordination-including obsolescence forecasting and last-time buy planning-for ongoing production programs.
SIP21106DR-12-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 85 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB ~ 40dB (1kHz ~ 100kHz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
SIP21106DR-12-E3 FAQ
1.How can I place an order for SIP21106DR-12-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIP21106DR-12-E3 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 SIP21106DR-12-E3 reliable?
The price and inventory of SIP21106DR-12-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SIP21106DR-12-E3 is usually 5 days.
3.What payment methods are accepted for SIP21106DR-12-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIP21106DR-12-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIP21106DR-12-E3?
SIP21106DR-12-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIP21106DR-12-E3 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 SIP21106DR-12-E3?
For technical support, including SIP21106DR-12-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIP21106DR-12-E3 requirements.
6.How does Aetrix verify that SIP21106DR-12-E3 is sourced from the original manufacturer or authorized distributors?
All SIP21106DR-12-E3 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 SIP21106DR-12-E3 meets industry standards.
7.What is the process for return or replacement of SIP21106DR-12-E3?
All SIP21106DR-12-E3 units undergo pre-shipment inspection (PSI). If there is an issue with SIP21106DR-12-E3, 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 SIP21106DR-12-E3 part is unused and in its original packaging.
Return procedure for SIP21106DR-12-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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