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Vishay Siliconix SIP21106DT-12-E3
- Part No.:
- SIP21106DT-12-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
SIP21106DT-12-E3.pdf
- Description:
- IC REG LIN 1.2V 150MA TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,293
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Product details
Overview
SIP21106DT-12-E3 from Vishay Siliconix is a 150 mA, low-noise, low-dropout linear regulator with fixed 1.2 V output, 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-sensitive applications such as cellular handsets and digital cameras.
For engineers reviewing the SIP21106DT-12-E3 datasheet, SIP21106DT-12-E3 pinout, SIP21106DT-12-E3 application, or SIP21106DT-12-E3 equivalent, key selection criteria include dropout voltage under 150 mA load, output noise performance without external bypass capacitor dependency, shutdown current <1 µA, thermal protection at 160 °C, and compatibility with 1 µF ceramic output capacitors in TSOT23-5L footprint.
Technical Context
The SIP21106DT-12-E3 employs a P-channel MOSFET pass transistor with 0.9 Ω typical on-resistance, enabling low quiescent current and eliminating base-drive losses inherent in PNP-based LDOs. Its bandgap reference (1.2 V) feeds an error amplifier that regulates output by modulating the PMOS gate voltage.
Startup includes active pull-down for fast transient response, and shutdown mode engages a 100 Ω NMOS auto-discharge path to ground the output within 1 ms for 1 µF load. The BP pin supports optional 10 nF noise-bypass filtering but is not required for stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±1.0 % at 25 °C - ensures precise core voltage for low-power microcontrollers and RF ICs. |
| Dropout Voltage | 135 mV at 150 mA load - enables operation down to VIN = 1.335 V, extending battery runtime in single-cell Li-ion or alkaline systems. |
| Output Noise | 60 µV(rms), 10 Hz–100 kHz - meets stringent RF supply noise requirements without mandatory external bypass capacitor. |
| Ground Current | 35 µA typical at 1 mA load - minimizes standby power loss in always-on subsystems like real-time clocks or sensor interfaces. |
| Shutdown Current | ≤1 µA at 85 °C - guarantees negligible battery drain during deep sleep modes in portable electronics. |
| Thermal Protection | 160 °C junction shutdown with 20 °C hysteresis - prevents permanent damage during sustained overload or poor PCB thermal design. |
| Package | TSOT23-5L (3.05 mm × 2.85 mm × 1.0 mm) - compact, lead-free surface-mount package compatible with standard SMT assembly. |
Pinout & Package
TSOT23-5L package: 3.05 mm × 2.85 mm × 1.0 mm, Pb-free, industrial temperature range (−40 °C to +85 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable control input | Active-high logic: ≥1.2 V enables regulation; ≤0.4 V disables output and activates 100 Ω auto-discharge path. |
| 2 - GND | Power ground reference | Primary thermal and electrical return path; must connect directly to large PCB ground plane for thermal management. |
| 3 - VIN | Input supply | Accepts 2.2 V to 6.0 V input; requires 1 µF ceramic bypass capacitor to ground for stability and line-transient suppression. |
| 4 - VOUT | Regulated output | Delivers stable 1.2 V to load; supports 1 µF ceramic output capacitor with ESR < 0.4 Ω for full-temperature stability. |
| 5 - BP | Noise bypass terminal | Optional 10 nF capacitor to ground reduces output noise; not required for basic operation or stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise output | 60 µV(rms) over 10 Hz–100 kHz bandwidth enables direct use in RF front-end power rails without additional filtering. |
| Low dropout architecture | 135 mV dropout at 150 mA allows operation from near-dead batteries (e.g., 1.335 V input for 1.2 V output), maximizing usable battery capacity. |
| Auto-discharge on shutdown | Integrated 100 Ω NMOS discharges VOUT to ground in <1 ms for 1 µF load, preventing unintended back-powering of downstream circuitry. |
| Robust protection suite | Includes short-circuit limiting (330 mA typical) and thermal shutdown (160 °C) with hysteresis, enabling reliable operation in uncontrolled environments. |
| Small-footprint packaging | TSOT23-5L footprint (3.05 mm × 2.85 mm) saves board space versus SC70-5L or TSC75-6L variants while maintaining thermal performance. |
Applications
| Cellular Handsets | Digital Cameras |
|---|---|
Use Scenario: Powering baseband processor core voltage in GSM/UMTS feature phones with single-cell Li-ion battery. IC Role / Device Role / Timing Role: Primary low-noise LDO delivering stable 1.2 V to CPU core, replacing switching regulators where EMI sensitivity prohibits inductor use. Use Value: 60 µV(rms) noise prevents RF desensitization; 135 mV dropout extends talk time by >12% compared to legacy 200 mV-dropout LDOs. | Use Scenario: Supplying image sensor analog front-end and ISP core in compact digital still cameras. IC Role / Device Role / Timing Role: Low-noise bias source for CCD/CMOS sensor analog chain and low-power ISP logic block. Use Value: Enables clean analog signal path without post-regulation filtering; 35 µA ground current preserves standby battery life during image capture buffering. |
| Wireless Modems | Noise-Sensitive RF Systems |
Use Scenario: Regulating power for LTE/Wi-Fi modem SoC in portable hotspots and M2M gateways. IC Role / Device Role / Timing Role: Secondary LDO supplying 1.2 V to RF transceiver digital control logic and PLL reference circuits. Use Value: ±1.0 % output accuracy maintains timing margin for high-speed serial interfaces; 1 µA shutdown current enables rapid power cycling between data bursts. | Use Scenario: Providing clean supply to GPS/GNSS RF receivers and low-phase-noise VCOs in navigation modules. IC Role / Device Role / Timing Role: Ultra-low-noise voltage source for RF signal chain biasing, decoupling sensitive analog nodes from noisy digital domains. Use Value: 60 µV(rms) noise floor avoids degradation of GPS C/N₀ ratio; BP pin flexibility allows optional 10 nF cap for worst-case RF immunity. |
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/MB | 150 mA, 1.2 V fixed, 600 mV dropout at 150 mA, 30 µV(rms) noise, SOT23-5 package | Higher dropout limits usable input range; lower noise suits ultra-sensitive analog, but reduced efficiency in battery systems | Select when absolute minimum noise dominates over battery life; verify thermal derating for 150 mA continuous load in SOT23-5. |
| Torex XC6206P122MR-G | 150 mA, 1.2 V fixed, 250 mV dropout at 150 mA, 40 µV(rms) noise, SOT23-5 package | Lower noise than SIP21106DT-12-E3 but higher dropout reduces headroom; no auto-discharge function | Prefer for noise-critical analog supplies where shutdown discharge is handled externally; confirm 250 mV dropout meets system VIN min spec. |
Compared with MCP1700T-1202E/MB and XC6206P122MR-G, SIP21106DT-12-E3 delivers superior efficiency via 135 mV dropout while maintaining competitive noise (60 µV), and uniquely integrates auto-discharge-critical for systems requiring fast, controlled power-down without external circuitry.
Availability
SIP21106DT-12-E3 is available at Aetrix Electronics and suitable for cellular handsets, digital cameras, and wireless modems requiring stable component supply despite end-of-life status through verified legacy inventory channels.
Supply support for SIP21106DT-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 and manufactures high-performance discrete semiconductors and integrated power solutions, emphasizing reliability, miniaturization, and efficiency in power management ICs.
The SiP21106 series targets portable, battery-operated electronics needing ultra-low-noise, low-quiescent-current LDOs with robust thermal and short-circuit protection in miniature packages.
FAQ
What is the maximum input voltage rating for SIP21106DT-12-E3?
The absolute maximum input voltage for SIP21106DT-12-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 from 2.2 V to 6.0 V input across −40 °C to +85 °C ambient temperature.
Does SIP21106DT-12-E3 require an external bypass capacitor on the BP pin?
No, SIP21106DT-12-E3 does not require an external bypass capacitor on the BP pin for stable operation. A 10 nF ceramic capacitor is optional and only used to reduce output noise to 60 µV(rms); omitting it maintains regulation but increases noise to ~350 µV(rms) per family specifications.
What is the thermal shutdown behavior of SIP21106DT-12-E3?
SIP21106DT-12-E3 activates thermal shutdown at approximately 160 °C junction temperature and resumes normal operation after cooling by ~20 °C hysteresis. During sustained overload, this results in pulsed output rather than permanent latch-off, protecting the device while allowing recovery once thermal conditions improve.
Can SIP21106DT-12-E3 be used with ceramic output capacitors smaller than 1 µF?
Yes, SIP21106DT-12-E3 is stable with output capacitance as low as 6 nF/mA (≈0.9 µF at 150 mA). However, 1 µF is the minimum recommended value for guaranteed stability across the full −40 °C to +85 °C temperature range and all load conditions per datasheet validation.
Is SIP21106DT-12-E3 RoHS compliant and lead-free?
Yes, SIP21106DT-12-E3 is RoHS Directive 2002/95/EC compliant and manufactured in a lead-free process. The TSOT23-5L package uses matte tin plating and meets JEDEC MO-193 mechanical standards, with full compliance documented in Vishay's PPAP and material declarations.
SIP21106DT-12-E3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay Siliconix
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- 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:
- TSOT-23-5
SIP21106DT-12-E3 FAQ
1.How can I place an order for SIP21106DT-12-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIP21106DT-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 SIP21106DT-12-E3 reliable?
The price and inventory of SIP21106DT-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 SIP21106DT-12-E3 is usually 5 days.
3.What payment methods are accepted for SIP21106DT-12-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIP21106DT-12-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIP21106DT-12-E3?
SIP21106DT-12-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIP21106DT-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 SIP21106DT-12-E3?
For technical support, including SIP21106DT-12-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIP21106DT-12-E3 requirements.
6.How does Aetrix verify that SIP21106DT-12-E3 is sourced from the original manufacturer or authorized distributors?
All SIP21106DT-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 SIP21106DT-12-E3 meets industry standards.
7.What is the process for return or replacement of SIP21106DT-12-E3?
All SIP21106DT-12-E3 units undergo pre-shipment inspection (PSI). If there is an issue with SIP21106DT-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 SIP21106DT-12-E3 part is unused and in its original packaging.
Return procedure for SIP21106DT-12-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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