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Vishay Siliconix SIP21107DR-46-E3
- Part No.:
- SIP21107DR-46-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SIP21107DR-46-E3.pdf
- Description:
- IC REG LINEAR 4.6V 150MA SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,771
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Product details
Overview
SIP21107DR-46-E3 from Vishay Siliconix is a 4.6 V fixed-output, 150 mA low-dropout linear regulator with Power-OK (POK) error flag output and no external noise bypass capacitor required. It features 135 mV dropout at 150 mA, 1.0 % output voltage accuracy at 25 °C, and operates across -40 °C to +85 °C ambient temperature. It serves as a stable, low-noise power source for RF sections in portable wireless handsets.
For engineers reviewing the SIP21107DR-46-E3 datasheet, SIP21107DR-46-E3 pinout, SIP21107DR-46-E3 application, or SIP21107DR-46-E3 equivalent, key selection criteria include POK functionality, SC70-5L package footprint, 4.6 V fixed output, shutdown current ≤1 µA, and compatibility with 1 µF ceramic output capacitors.
Technical Context
The SIP21107DR-46-E3 uses an internal P-channel MOSFET pass transistor (0.9 Ω typical RDS(on)) and a 1.2 V bandgap reference to regulate output voltage. Its error amplifier compares feedback against the reference and drives the pass gate to maintain regulation under load changes up to 150 mA.
It integrates thermal shutdown (160 °C typical trip), short-circuit protection (330 mA typical limit), and active output discharge via a 100 Ω NMOS during shutdown. The open-drain POK pin asserts high when VOUT reaches ≥93 % of nominal and goes low during dropout, overcurrent, or thermal fault.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.6 V ±2.5 % over full temperature range (-40 °C to +85 °C) |
| Dropout Voltage | 135 mV at 150 mA load - enables operation with VIN as low as 4.735 V while maintaining regulation |
| Ground Current | 35 µA typical at 1 mA load - minimizes quiescent drain on battery in light-load conditions |
| Shutdown Current | ≤1 µA maximum at 85 °C - ensures ultra-low standby power consumption |
| POK Threshold | 93 % of VOUT nominal (4.278 V) - provides reliable power-good assertion with 7 % hysteresis |
| Output Noise | 350 µVrms (10 Hz–100 kHz) - suitable for noise-sensitive analog/RF circuitry without BP capacitor |
| Auto-Discharge Resistance | 100 Ω typical - discharges 1 µF output capacitor to <10 % VOUT in <1 ms upon shutdown |
Pinout & Package
The SIP21107DR-46-E3 is housed in a RoHS-compliant SC70-5L package (2.1 mm × 2.1 mm × 0.95 mm), optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable input | Active-high logic control; device enabled when voltage ≥1.2 V, disabled when ≤0.4 V; must not float |
| 2 - GND | Ground reference and thermal path | Electrical return and primary heat dissipation path; requires direct connection to large PCB ground plane |
| 3 - VIN | Input supply | Accepts 2.2 V to 6.0 V; requires 1 µF ceramic bypass capacitor to GND for stability and line transient suppression |
| 4 - VOUT | Regulated output | Delivers 4.6 V ±2.5 %; supports 150 mA continuous load; stable with ≥1 µF ceramic output capacitor |
| 5 - POK | Open-drain Power-OK flag | Asserts low during fault conditions (dropout, overcurrent, thermal shutdown); requires external pull-up to VIN or VOUT |
Key Features
| Feature | Design Value |
|---|---|
| Integrated POK output | Eliminates need for external supervisor IC in power sequencing-critical systems like cellular baseband processors |
| No external noise bypass capacitor | Reduces BOM count and board area vs. SiP21106 variants; simplifies layout for RF subsystems |
| 100 Ω auto-discharge NMOS | Ensures rapid, controlled output collapse during shutdown - prevents back-powering of downstream circuitry |
| Thermal and short-circuit protection | Enables robust operation in unattended or thermally constrained environments without external foldback circuitry |
| SC70-5L footprint | Provides smallest available package option in the SiP21107 family - ideal for ultra-thin handheld form factors |
Applications
| Cellular Baseband Power | Wireless Modem Core Supply |
|---|---|
Use Scenario: Powering ARM-based baseband processor core in dual-mode GSM/UMTS handset. IC Role / Device Role / Timing Role: Primary LDO delivering clean 4.6 V to processor I/O rails with precise power-good signaling for boot sequence validation. Use Value: POK output synchronizes processor reset release with stable VOUT, preventing initialization failures due to marginal supply ramp. | Use Scenario: Supplying RF transceiver digital core in embedded LTE modem module. IC Role / Device Role / Timing Role: Low-noise, fast-transient LDO providing regulated 4.6 V to transceiver logic while rejecting switching noise from PMIC DC-DC stages. Use Value: 350 µVrms noise and 70 µs turn-on time ensure minimal clock jitter and deterministic startup timing for RF calibration routines. |
| Digital Camera Image Sensor Bias | PDA Application Processor I/O Rail |
Use Scenario: Biasing CMOS image sensor interface circuitry in compact digital camera. IC Role / Device Role / Timing Role: Fixed-output LDO supplying 4.6 V to sensor's digital interface block with integrated fault reporting. Use Value: POK flag alerts system controller of undervoltage events during battery sag, enabling graceful sensor shutdown before data corruption occurs. | Use Scenario: Powering application processor I/O bank in handheld PDA with multi-voltage rail architecture. IC Role / Device Role / Timing Role: Secondary LDO generating 4.6 V for SDIO and USB PHY interfaces, coordinated with main PMIC sequencing. Use Value: SC70-5L package enables placement adjacent to processor ball grid, minimizing trace inductance and improving PSRR above 10 kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-4602E/TT | 4.6 V fixed output, 250 mA rating, 600 mV dropout at full load, no POK pin, SOT-23-3 package | Lacks power-good signaling; higher dropout limits use in low-VIN scenarios; smaller 3-pin footprint reduces routing complexity | Select when POK is unnecessary and higher output current headroom is required without sequencing dependency |
| Torex XC6206P462MR-G | 4.6 V fixed output, 150 mA rating, 350 mV dropout at 150 mA, no POK, SOT-25 package (same pinout as SC70-5L) | Matches SC70-5L footprint and current rating but omits POK; lower PSRR above 10 kHz than SiP21107 | Select for drop-in replacement where board space and pin compatibility are critical but power sequencing is handled externally |
Compared with MCP1700T-4602E/TT and XC6206P462MR-G, the SIP21107DR-46-E3 uniquely delivers POK functionality in the SC70-5L footprint with lowest dropout (135 mV) and lowest ground current (35 µA), making it optimal for battery-powered systems requiring both precision sequencing and extended runtime.
Availability
SIP21107DR-46-E3 is available at Aetrix Electronics and suitable for cellular phones, wireless modems, and digital cameras requiring stable component supply with known end-of-life status and legacy design support.
Supply support for SIP21107DR-46-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, with emphasis on reliability, efficiency, and miniaturization for demanding electronic systems.
The SiP21107 series was developed specifically for portable battery-powered devices needing low-noise, low-quiescent-current LDOs with integrated power supervision - targeting RF front-ends, baseband processors, and imaging subsystems.
FAQ
What is the maximum input voltage rating for the SIP21107DR-46-E3?
The SIP21107DR-46-E3 has an absolute maximum input voltage of 6.5 V referenced to GND. Operation is recommended within 2.2 V to 6.0 V per specifications. Exceeding 6.5 V risks permanent damage, and sustained operation above 6.0 V may degrade long-term reliability even if within absolute max ratings.
Does the SIP21107DR-46-E3 require an external pull-up resistor on the POK pin?
Yes, the SIP21107DR-46-E3 POK pin is an open-drain NMOS output and requires an external pull-up resistor to either VIN or VOUT. A typical value is 100 kΩ to VIN. Without this resistor, the POK signal cannot assert high and will remain indeterminate, compromising power sequencing integrity in systems relying on this flag.
Can the SIP21107DR-46-E3 be used with a 0.47 µF output capacitor?
No - the SIP21107DR-46-E3 requires a minimum 1 µF ceramic output capacitor for guaranteed stability across the full operating range. Using 0.47 µF may cause oscillation or poor load transient response, especially at temperatures near -40 °C or +85 °C. The datasheet specifies stability with ≥1 µF (6 nF/mA rule yields ~1 µF at 150 mA).
What is the thermal shutdown behavior of the SIP21107DR-46-E3?
The SIP21107DR-46-E3 activates thermal shutdown at approximately 160 °C junction temperature and exhibits ~20 °C hysteresis. When triggered, the P-channel pass transistor turns off, halting output current. Once junction temperature falls below ~140 °C, regulation resumes automatically. This protects against sustained overload but is not intended for continuous cycling.
Is the SIP21107DR-46-E3 still in production or available for new designs?
The SIP21107DR-46-E3 is End of Life (EOL) with Last Available Purchase Date of 31-Dec-2014. Aetrix Electronics maintains legacy inventory and offers lifecycle coordination support, including cross-reference guidance and obsolescence mitigation planning for existing designs dependent on SIP21107DR-46-E3.
SIP21107DR-46-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):
- 4.6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.22V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 85 µA
- Current - Supply (Max):
- -
- PSRR:
- 72dB ~ 38dB (1kHz ~ 100kHz)
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
SIP21107DR-46-E3 FAQ
1.How can I place an order for SIP21107DR-46-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIP21107DR-46-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 SIP21107DR-46-E3 reliable?
The price and inventory of SIP21107DR-46-E3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SIP21107DR-46-E3 is usually 5 days.
3.What payment methods are accepted for SIP21107DR-46-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIP21107DR-46-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIP21107DR-46-E3?
SIP21107DR-46-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIP21107DR-46-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 SIP21107DR-46-E3?
For technical support, including SIP21107DR-46-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIP21107DR-46-E3 requirements.
6.How does Aetrix verify that SIP21107DR-46-E3 is sourced from the original manufacturer or authorized distributors?
All SIP21107DR-46-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 SIP21107DR-46-E3 meets industry standards.
7.What is the process for return or replacement of SIP21107DR-46-E3?
All SIP21107DR-46-E3 units undergo pre-shipment inspection (PSI). If there is an issue with SIP21107DR-46-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 SIP21107DR-46-E3 part is unused and in its original packaging.
Return procedure for SIP21107DR-46-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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