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Vishay Siliconix SIP21106DR-33-E3
- Part No.:
- SIP21106DR-33-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SIP21106DR-33-E3.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,589
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Product details
Overview
SIP21106DR-33-E3 from Vishay Siliconix is a fixed-output 3.3 V, 150 mA low-noise low-dropout (LDO) regulator in SC70-5L package. It delivers 135 mV dropout at 150 mA, 60 µV(rms) output noise (10 Hz–100 kHz), ±1.0 % output voltage accuracy at 25 °C, and 35 µA ground current at 1 mA load-optimized for battery-powered RF systems requiring stable, quiet voltage rails.
For engineers reviewing the SIP21106DR-33-E3 datasheet, SIP21106DR-33-E3 pinout, SIP21106DR-33-E3 application, or SIP21106DR-33-E3 equivalent, key selection criteria include ultra-low noise performance, SC70-5L footprint compatibility, shutdown auto-discharge capability, and operation across –40 °C to +85 °C ambient.
Technical Context
The SIP21106DR-33-E3 uses a P-channel MOSFET pass transistor with 0.9 Ω typical on-resistance, enabling low quiescent current and no base-drive loss. Its internal 1.2 V bandgap reference feeds an error amplifier that regulates output by adjusting the PMOS gate voltage based on feedback from a fixed resistor divider.
Startup includes active pull-down for fast transient response; shutdown mode enables <1 µA supply current and activates a 100 Ω NMOS discharge path to ground the output. The BP pin accepts a 10 nF ceramic bypass capacitor to suppress output noise without compromising stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±1.0 % at 25 °C - ensures precise rail generation for 3.3 V logic and analog circuitry. |
| Dropout Voltage | 135 mV at 150 mA load - allows regulation down to VIN = 3.435 V, extending usable battery range. |
| Output Noise | 60 µV(rms), 10 Hz–100 kHz - meets stringent RF front-end and ADC reference requirements. |
| Ground Current | 35 µA (typical) at 1 mA load - minimizes standby power draw in portable devices. |
| Shutdown Current | ≤1 µA at 85 °C - preserves battery life during system sleep modes. |
| Thermal Protection | 160 °C junction shutdown with 20 °C hysteresis - prevents permanent damage under sustained overload. |
| Auto-Discharge | 100 Ω NMOS path discharges 1 µF output cap in <1 ms - eliminates residual voltage during power-down sequencing. |
Pinout & Package
SC70-5L package: 2.1 mm × 2.1 mm × 0.95 mm, lead-free, RoHS-compliant, industrial temperature range (–40 °C to +85 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | Active-high control: ≥1.2 V enables regulation; ≤0.4 V disables output and triggers auto-discharge. |
| 2 (GND) | Ground reference | Electrical return and primary thermal path-must connect to large copper plane for thermal management. |
| 3 (VIN) | Input supply | Accepts 2.2–6.0 V; requires 1 µF ceramic bypass to GND for line-transient immunity. |
| 4 (VOUT) | Regulated output | Delivers fixed 3.3 V; stable with ≥1 µF ceramic output capacitor (ESR < 0.4 Ω). |
| 5 (BP) | Noise bypass | Connects to 10 nF ceramic capacitor to GND to reduce output noise by filtering reference/amp noise. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise architecture | 60 µV(rms) output noise with 10 nF BP capacitor-enables clean power for RF transceivers and precision ADCs. |
| P-channel pass transistor | 0.9 Ω typical RDS(on) eliminates base-current loss-reduces ground current vs. PNP-based LDOs. |
| Fast transient response | Active pull-down circuit improves load-step recovery-critical for burst-mode digital loads. |
| Integrated protection | 330 mA current limit and 160 °C thermal shutdown-eliminates need for external fault-handling circuitry. |
| SC70-5L footprint | 2.1 mm × 2.1 mm area-supports high-density portable PCB layouts while maintaining thermal performance. |
Applications
| Cellular Handsets | Wireless Modems |
|---|---|
Use Scenario: Powering RF transceiver ICs and baseband processors in compact mobile handsets. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying noise-sensitive RF front-end and PLL circuits. Use Value: 60 µV(rms) noise and 135 mV dropout extend talk time and maintain EVM performance under weak battery conditions. | Use Scenario: Regulating power for LTE/Wi-Fi modem SoCs in battery-backed IoT gateways. IC Role / Device Role / Timing Role: Fixed 3.3 V supply for communication interface logic and memory I/O. Use Value: ±1.0 % output accuracy ensures reliable USB/PCIe signaling margins; SC70-5L saves board space in constrained enclosures. |
| Digital Cameras | MP3 Players |
Use Scenario: Supplying image sensor bias and ISP core voltage in ultra-thin camera modules. IC Role / Device Role / Timing Role: Low-noise 3.3 V rail for CMOS image sensor analog front-end and ADC reference. Use Value: BP pin bypass reduces temporal noise in captured images; 35 µA ground current extends recording duration. | Use Scenario: Powering audio DAC, headphone amplifier, and flash memory in portable media players. IC Role / Device Role / Timing Role: Main 3.3 V supply for audio signal chain and storage interface. Use Value: Auto-discharge clears residual VOUT during playback pause-prevents pop/click artifacts on resume. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3302E/TT | 300 mA output, 1.6 µA quiescent current, no BP pin, SOT-23-5 package | Lacks low-noise BP bypass capability; higher IQ reduces battery life in always-on sensors | Select when higher output current is required and noise sensitivity is secondary. |
| TCS2110-3.3 | 150 mA, 65 µV(rms) noise, 1.2 % accuracy, TSOT23-5L package | Similar noise and accuracy but larger 3.05 mm × 2.85 mm footprint and no auto-discharge | Choose when board layout permits larger package and discharge sequencing is handled externally. |
Compared with MCP1700T-3302E/TT and TCS2110-3.3, the SIP21106DR-33-E3 uniquely combines ultra-low noise (60 µV), integrated auto-discharge, and minimal SC70-5L footprint-making it optimal for space-constrained, battery-operated RF systems where power integrity and shutdown behavior are critical.
Availability
SIP21106DR-33-E3 is available at Aetrix Electronics and suitable for cellular handsets, wireless modems, and digital cameras requiring stable component supply despite end-of-life status.
Supply support for SIP21106DR-33-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 with emphasis on efficiency, reliability, and miniaturization.
The SiP21106 series targets portable electronics requiring ultra-low-noise, low-quiescent-current LDOs in sub-2.5 mm² packages-specifically addressing RF, imaging, and audio subsystems in battery-constrained devices.
FAQ
What is the maximum input voltage rating for SIP21106DR-33-E3?
The absolute maximum input voltage for SIP21106DR-33-E3 is 6.5 V relative to GND. Operation above 6.0 V is outside the recommended range and may compromise long-term reliability. The device is specified for continuous operation between 2.2 V and 6.0 V input, with dropout performance validated up to 6.0 V.
Does SIP21106DR-33-E3 require an external bypass capacitor on the BP pin?
Yes, SIP21106DR-33-E3 requires a 10 nF ceramic capacitor from the BP pin to GND to achieve its specified 60 µV(rms) output noise. Omitting this capacitor increases noise to ~350 µV(rms). Larger values (>50 nF) are not recommended as they degrade startup time and may affect stability.
How does the auto-discharge function operate in SIP21106DR-33-E3?
When the EN pin is pulled low, SIP21106DR-33-E3 enters shutdown mode and activates an internal 100 Ω NMOS discharge path from VOUT to GND. This discharges a 1 µF output capacitor in under 1 ms, ensuring rapid and controlled power-down without external components.
Can SIP21106DR-33-E3 be used with ceramic output capacitors smaller than 1 µF?
No-SIP21106DR-33-E3 requires a minimum 1 µF ceramic output capacitor (ESR < 0.4 Ω) for guaranteed stability across –40 °C to +85 °C. Smaller values risk oscillation or degraded load-transient response, especially at full 150 mA load.
Is SIP21106DR-33-E3 still in production?
No-SIP21106DR-33-E3 is End of Life per Vishay documentation (Last Available Purchase Date: 31-Dec-2014). Aetrix Electronics provides remaining inventory with full traceability and supports legacy design continuity through lifecycle management services.
SIP21106DR-33-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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.22V @ 150mA
- 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-33-E3 FAQ
1.How can I place an order for SIP21106DR-33-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIP21106DR-33-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-33-E3 reliable?
The price and inventory of SIP21106DR-33-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-33-E3 is usually 5 days.
3.What payment methods are accepted for SIP21106DR-33-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIP21106DR-33-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIP21106DR-33-E3?
SIP21106DR-33-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIP21106DR-33-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-33-E3?
For technical support, including SIP21106DR-33-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIP21106DR-33-E3 requirements.
6.How does Aetrix verify that SIP21106DR-33-E3 is sourced from the original manufacturer or authorized distributors?
All SIP21106DR-33-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-33-E3 meets industry standards.
7.What is the process for return or replacement of SIP21106DR-33-E3?
All SIP21106DR-33-E3 units undergo pre-shipment inspection (PSI). If there is an issue with SIP21106DR-33-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-33-E3 part is unused and in its original packaging.
Return procedure for SIP21106DR-33-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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