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Vishay Siliconix SIP21107DR-12-E3
- Part No.:
- SIP21107DR-12-E3
- Manufacturer:
- Vishay Siliconix
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SIP21107DR-12-E3.pdf
- Description:
- IC REG LINEAR 1.2V 150MA SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,361
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Product details
Overview
SIP21107DR-12-E3 from Vishay Siliconix is a 150-mA, low-noise, low-dropout linear regulator with fixed 1.2 V output, Power OK (POK) error flag, and SC70-5L package. It delivers 135 mV dropout at 150 mA, 1.0 % output voltage accuracy at 25 °C, and operates across –40 °C to +85 °C ambient. Designed for battery-powered RF systems like cellular handsets and wireless modems, it extends runtime via ultra-low 35 µA ground current at 1 mA load.
For engineers reviewing the SIP21107DR-12-E3 datasheet, SIP21107DR-12-E3 pinout, SIP21107DR-12-E3 application, or SIP21107DR-12-E3 equivalent, key selection criteria include POK functionality, SC70-5L footprint compatibility, dropout performance under 150 mA load, thermal shutdown behavior at 160 °C, and stability with 1 µF ceramic output capacitors.
Technical Context
The SIP21107DR-12-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. Its error amplifier compares feedback against reference and drives the gate to maintain regulation - enabling fast transient response and stable operation down to 6 nF/mA output capacitance.
It integrates open-drain POK (Power OK) logic that asserts high when VOUT reaches ≥90 % of nominal (1.08 V), with 1.5 % hysteresis and 40 µs delay from VOUT rise. Shutdown mode activates below 0.4 V on EN, reducing supply current to ≤1 µA and engaging a 100 Ω NMOS auto-discharge path to ground.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±2.5 % over –40 °C to +85 °C - ensures stable core bias for low-voltage microcontrollers and RF ICs. |
| Dropout Voltage | 135 mV at 150 mA load - enables operation from 1.335 V input, critical for single-cell Li-ion or NiMH battery systems. |
| Ground Current | 35 µA typical at 1 mA load - minimizes quiescent drain during light-load standby in portable devices. |
| POK Threshold | 90–96 % of VOUT (1.08–1.15 V) rising edge - provides precise power-good signaling for system sequencers and reset controllers. |
| Shutdown Current | ≤1 µA at 85 °C - guarantees negligible battery leakage during deep sleep or power-off states. |
| Thermal Shutdown | 160 °C junction temperature with 20 °C hysteresis - protects against sustained overload without requiring external thermal management. |
| Output Noise | 350 µV(rms) (10 Hz–100 kHz) - suitable for noise-sensitive analog/RF blocks where SiP21106's 60 µV(rms) is not required. |
Pinout & Package
Package: SC70-5L (2.1 mm × 2.1 mm × 0.95 mm), RoHS-compliant, industrial temperature range (–40 °C to +85 °C).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | Active-high logic control; <0.4 V disables regulator and triggers auto-discharge; tie to VIN for always-on operation. |
| 2 (GND) | Ground reference and thermal path | Must connect directly to large PCB ground plane to meet thermal derating (3.4 mW/°C above 70 °C ambient). |
| 3 (VIN) | Input supply | Accepts 2.2–6.0 V; requires 1 µF ceramic bypass capacitor close to pin to suppress line transients. |
| 4 (VOUT) | Regulated output | Delivers 1.2 V at up to 150 mA; stable with ≥1 µF ceramic output capacitor (ESR <0.4 Ω). |
| 5 (POK) | Open-drain Power OK flag | Requires external pull-up to VIN or VOUT; sinks ≤0.5 mA; goes low on dropout, overcurrent, or thermal fault. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated POK error flag | Enables reliable power sequencing and fault detection without external comparators or resistive dividers. |
| No external noise bypass capacitor required | Eliminates BP pin and associated 10 nF capacitor - simplifies layout and reduces BOM count vs. SiP21106 variants. |
| Auto-discharge on shutdown | 100 Ω internal NMOS discharges 1 µF output cap in <1 ms - prevents residual voltage from interfering with downstream logic states. |
| Short-circuit and thermal protection | 330 mA typical current limit and 160 °C thermal shutdown with hysteresis - allows safe indefinite short-circuit operation. |
| Stable with low-ESR ceramic capacitors | Guaranteed stability using standard 1 µF X7R/Y7R ceramics - avoids costly tantalum or polymer alternatives. |
Applications
| Cellular Handset Core Supply | Wireless Modem RF Bias |
|---|---|
Use Scenario: Powers baseband processor core rail in GSM/UMTS handsets operating from single-cell Li-ion (3.0–4.2 V). IC Role / Device Role / Timing Role: Low-noise LDO providing clean 1.2 V supply to ARM-based SoC cores during burst transmission. Use Value: 135 mV dropout enables >90 % battery utilization; POK signal synchronizes processor wake-up with valid supply. | Use Scenario: Supplies bias voltage to PA driver stages and RF transceivers in 802.11b/g/n modules. IC Role / Device Role / Timing Role: Regulator delivering stable 1.2 V to analog front-end circuitry sensitive to supply ripple. Use Value: 350 µV(rms) noise meets RF IC PSRR requirements; SC70-5L footprint saves space in compact module designs. |
| Digital Camera Image Sensor Bias | PDA Application Processor Rail |
Use Scenario: Provides regulated 1.2 V to CMOS image sensor digital logic and interface circuitry. IC Role / Device Role / Timing Role: LDO ensuring glitch-free clock domain transitions during sensor initialization and frame capture. Use Value: Fast 70 µs turn-on time aligns with sensor startup timing; POK confirms readiness before I²C configuration. | Use Scenario: Supplies main logic voltage to ARM9/ARM11 application processors in handheld PDAs. IC Role / Device Role / Timing Role: Primary core regulator managing dynamic load steps during UI rendering and memory access bursts. Use Value: 35 µA ground current at light load extends standby time; auto-discharge prevents latch-up during suspend/resume cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP2202K-12TRG1 | Fixed 1.2 V, 300 mA output, no POK, SOT-23-5 package | Lacks power-good signaling; higher current rating but larger footprint | Select when POK is unnecessary and higher load headroom is required. |
| MCP1700T-1202E/TT | Fixed 1.2 V, 250 mA, no POK, SOT-23-5, 1.6 µA quiescent current | Ultra-low IQ but no fault flag; lower max current and different thermal profile | Select for ultra-low-power always-on sensors where POK is omitted from system architecture. |
Compared with AP2202K-12TRG1 and MCP1700T-1202E/TT, SIP21107DR-12-E3 uniquely combines POK functionality, SC70-5L miniaturization, and 150 mA capability - making it optimal for space-constrained, fault-aware portable systems where supply sequencing and compactness are critical.
Availability
SIP21107DR-12-E3 is available at Aetrix Electronics and suitable for cellular handsets, wireless modems, digital cameras, and PDAs requiring stable component supply despite end-of-life status.
Supply support for SIP21107DR-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 integrated power solutions, emphasizing reliability, efficiency, and miniaturization for demanding electronic systems.
The SiP2110x family targets portable, battery-operated applications needing low-noise, low-quiescent-current regulation with integrated fault monitoring - specifically addressing RF, imaging, and handheld computing power integrity.
FAQ
What is the maximum input voltage for SIP21107DR-12-E3?
The absolute maximum input voltage for SIP21107DR-12-E3 is 6.5 V, but the recommended operating range is 2.2 V to 6.0 V. Exceeding 6.5 V risks permanent damage. For reliable long-term operation, keep VIN within the recommended range and ensure proper decoupling with a 1 µF ceramic capacitor at the VIN pin.
Does SIP21107DR-12-E3 require an external pull-up resistor on the POK pin?
Yes, SIP21107DR-12-E3 requires an external pull-up resistor on the POK pin because it is an open-drain output. The resistor must connect to either VIN or VOUT and be sized to support ≤0.5 mA sink current while maintaining logic-high voltage levels compatible with the host system's input thresholds.
How does the auto-discharge function work in SIP21107DR-12-E3?
When the EN pin is driven low, SIP21107DR-12-E3 enters shutdown mode and activates an internal 100 Ω NMOS discharge path between VOUT and GND. This discharges a 1 µF output capacitor in under 1 ms, preventing residual voltage from causing unintended behavior in downstream logic or analog circuits during power-down sequences.
Can SIP21107DR-12-E3 operate with ceramic output capacitors smaller than 1 µF?
Yes - SIP21107DR-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 –40 °C to +85 °C, especially with X7R or Y7R dielectrics. Smaller values may compromise load-transient response or phase margin.
What is the POK threshold voltage for SIP21107DR-12-E3 at 1.2 V output?
For SIP21107DR-12-E3 with 1.2 V output, the POK threshold is 90–96 % of VOUT, corresponding to 1.08–1.15 V (rising edge). The POK pin goes high when VOUT crosses this window and remains high until VOUT falls below the hysteresis-lowered threshold (~1.065 V), ensuring glitch-free power-good assertion.
SIP21107DR-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:
- 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-12-E3 FAQ
1.How can I place an order for SIP21107DR-12-E3 through Aetrix?
Please submit a Request for Quotation (RFQ) for SIP21107DR-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 SIP21107DR-12-E3 reliable?
The price and inventory of SIP21107DR-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 SIP21107DR-12-E3 is usually 5 days.
3.What payment methods are accepted for SIP21107DR-12-E3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SIP21107DR-12-E3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SIP21107DR-12-E3?
SIP21107DR-12-E3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SIP21107DR-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 SIP21107DR-12-E3?
For technical support, including SIP21107DR-12-E3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SIP21107DR-12-E3 requirements.
6.How does Aetrix verify that SIP21107DR-12-E3 is sourced from the original manufacturer or authorized distributors?
All SIP21107DR-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 SIP21107DR-12-E3 meets industry standards.
7.What is the process for return or replacement of SIP21107DR-12-E3?
All SIP21107DR-12-E3 units undergo pre-shipment inspection (PSI). If there is an issue with SIP21107DR-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 SIP21107DR-12-E3 part is unused and in its original packaging.
Return procedure for SIP21107DR-12-E3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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