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Analog Devices Inc. LT3032EDE-15#TRPBF
- Part No.:
- LT3032EDE-15#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 14-PowerWFDFN
- Datasheet:
-
LT3032EDE-15#TRPBF.pdf
- Description:
- IC REG LINEAR +-15V 14DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,559
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Product details
Overview
LT3032EDE-15#TRPBF from Analog Devices is a dual-polarity, low-noise, low-dropout linear regulator delivering ±150mA output current with ±300mV typical dropout voltage and 20µVRMS/30µVRMS (10Hz–100kHz) output noise. It integrates independent positive and negative regulators in a single 14-lead DFN package and is designed for bipolar power supplies in precision instrumentation.
For engineers reviewing the LT3032EDE-15#TRPBF datasheet, LT3032EDE-15#TRPBF pinout, LT3032EDE-15#TRPBF application, or LT3032EDE-15#TRPBF equivalent, key selection criteria include fixed ±15V output, shutdown control per rail (SHDNP/SHDNN), thermal and current limiting, stability with 2.2µF ceramic capacitors, and operation across –40°C to 125°C.
Technical Context
The LT3032EDE-15#TRPBF implements two fully independent LDO regulators - one positive (OUTP/INP/SHDNP) and one negative (OUTN/INN/SHDNN) - each with dedicated reference, error amplifier, and pass element. Both rails feature internal 1.22V bandgap references and fixed-output architecture eliminating external feedback resistors.
Each regulator operates with input voltage ranges of ±2.3V to ±20V, maintains regulation down to 300mV dropout at full load, and achieves ultra-low quiescent current (30µA per channel active, <3µA total in shutdown). Output noise is reduced to 20µVRMS (positive) and 30µVRMS (negative) using 0.01µF bypass capacitors on BYPP/BYPN pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed ±15.00V (±15.225V max / ±14.775V min at 1mA, –40°C to 125°C) |
| Output Current | ±150mA per rail - supports dual-rail loads without external current sharing |
| Dropout Voltage | 300mV typical at ±150mA - enables operation from ±15.3V inputs while maintaining regulation |
| Output Noise | 20µVRMS (positive), 30µVRMS (negative), 10Hz–100kHz - suitable for ADC/DAC reference supplies |
| Quiescent Current | 30µA per channel active; <3µA total in shutdown - extends battery life in portable instruments |
| Input Voltage Range | ±2.3V to ±20V - accommodates wide supply margins and transient headroom |
| Stability | Stable with ≥2.2µF ceramic output capacitors - eliminates ESR requirements and simplifies layout |
Pinout & Package
The LT3032EDE-15#TRPBF is housed in a 14-lead 4mm × 3mm × 0.75mm plastic DFN package with exposed thermal pads (Pin 15 = GND, Pin 16 = INN) requiring PCB soldering for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INP | Positive input supply | Accepts +2.3V to +20V; connects to positive source before regulation |
| OUTP | Positive regulated output | Delivers fixed +15V at up to +150mA; requires ≥2.2µF ceramic capacitor |
| SHDNP | Positive shutdown control | Active-high: <0.25V = OFF, >2V = ON; enables independent rail disable |
| BYPP | Positive bypass capacitor terminal | Connects 0.01µF capacitor to reduce output noise to 20µVRMS |
| GND | Analog ground reference | Common return for both regulators; tied to exposed pad (Pin 15) |
| INN | Negative input supply | Accepts –2.3V to –20V; connects to negative source before regulation |
| OUTN | Negative regulated output | Delivers fixed –15V at up to –150mA; requires ≥2.2µF ceramic capacitor |
| SHDNN | Negative shutdown control | Active-high: <0.25V = OFF, >2V = ON; enables independent rail disable |
| BYPN | Negative bypass capacitor terminal | Connects 0.01µF capacitor to reduce output noise to 30µVRMS |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDO architecture | Enables simultaneous ±15V generation with separate enable, bypass, and protection per rail |
| No external feedback required | Fixed ±15V output eliminates resistor dividers and associated tolerance/temperature drift |
| Reverse-output protection | Prevents reverse current flow into OUTP/OUTN during input loss - no external diodes needed |
| Thermal and current limiting | Protects against overloads and PCB hotspots without external circuitry |
| Low-noise bypass capability | 0.01µF capacitors on BYPP/BYPN reduce noise by >50% vs. standard LDOs - critical for signal-chain power |
Applications
| Bipolar Instrumentation Amplifiers | Precision Data Acquisition Systems |
|---|---|
Use Scenario: Powering high-resolution (≥24-bit) delta-sigma ADCs and precision op-amps in portable multimeters and sensor interfaces. IC Role / Device Role / Timing Role: Provides clean, matched ±15V rails with sub-30µVRMS noise and tight load regulation to minimize code spread and offset drift. Use Value: Enables 0.0015% THD+N and <1 LSB INL error in 24-bit conversions under dynamic load conditions. | Use Scenario: Supplying analog front-end (AFE) sections in medical ECG/EEG modules where common-mode rejection and baseline stability are critical. IC Role / Device Role / Timing Role: Delivers isolated, low-noise ±15V bias for instrumentation amplifiers and programmable gain stages. Use Value: Maintains >110dB CMRR by suppressing supply-induced common-mode coupling through ultra-low PSRR and noise. |
| Portable Test Equipment | Industrial Process Controllers |
Use Scenario: Powering handheld oscilloscope front-ends and arbitrary waveform generator outputs requiring symmetrical voltage swing. IC Role / Device Role / Timing Role: Supplies dual-rail op-amp drivers with fast transient response and rail-to-rail output capability. Use Value: Supports 10Vpp differential signals with <0.5% gain error and <10ns propagation delay variation across temperature. | Use Scenario: Providing stable ±15V for analog I/O modules in PLC backplanes operating in harsh industrial environments. IC Role / Device Role / Timing Role: Regulates unregulated 24VDC field power into precision analog supply rails with robust thermal management. Use Value: Sustains continuous ±150mA output at 125°C ambient via exposed-pad thermal path - eliminates derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-polarity LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT3033EDE-15#TRPBF | Same pinout, identical ±15V output, but adds programmable soft-start and higher PSRR (70dB @120Hz) | Better suited for systems sensitive to inrush current or line ripple (e.g., RF test gear) | Select when soft-start or enhanced ripple rejection is required; otherwise LT3032EDE-15#TRPBF offers lower cost and same core specs |
| TPS7A3301RGWR | Single-chip dual LDO with ±15V output, but higher dropout (450mV), higher noise (45µVRMS), and no independent shutdown | Acceptable for less demanding analog circuits where board space is constrained | Choose only if footprint minimization outweighs noise/dropout penalties; not recommended for high-precision signal chains |
Compared with LT3033EDE-15#TRPBF, the LT3032EDE-15#TRPBF trades soft-start and marginally better PSRR for lower BOM cost and proven thermal reliability in extended-temperature industrial use; versus TPS7A3301RGWR, it delivers significantly lower noise and dropout at the expense of slightly larger package size and independent rail control.
Availability
LT3032EDE-15#TRPBF is available at Aetrix Electronics and suitable for bipolar power supplies, precision instrumentation, and portable test equipment requiring stable component supply across extended temperature ranges.
Supply support for LT3032EDE-15#TRPBF 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
Analog Devices (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LT3032 series belongs to Analog Devices' precision power management portfolio, engineered specifically for dual-rail, low-noise analog systems where matched positive/negative regulation, minimal dropout, and ultra-low quiescent current are essential.
FAQ
What is the guaranteed output voltage accuracy for LT3032EDE-15#TRPBF over temperature?
The LT3032EDE-15#TRPBF delivers ±15.00V output with guaranteed limits of ±15.225V (max) and ±14.775V (min) at 1mA load across –40°C to 125°C, corresponding to ±1.5% initial accuracy including line/load/temperature effects - verified per Analog Devices' production test flow for the E-grade device.
Can LT3032EDE-15#TRPBF operate with input voltages below ±2.3V?
No - the LT3032EDE-15#TRPBF has absolute minimum input voltage specifications of ±2.3V for proper regulation at full load. Attempting operation below this threshold risks dropout, instability, or failure to maintain ±15V output; the datasheet explicitly defines ±2.3V as the lower bound of the functional input range.
Does LT3032EDE-15#TRPBF require external protection diodes?
No - the LT3032EDE-15#TRPBF integrates reverse-output protection on both OUTP and OUTN pins, eliminating the need for external blocking diodes. This is confirmed in the Features section and Absolute Maximum Ratings (Note 3), which describe internal parasitic diode constraints and safe operating conditions.
How does the shutdown functionality work for LT3032EDE-15#TRPBF?
The LT3032EDE-15#TRPBF provides independent shutdown control: SHDNP enables/disables the positive regulator (threshold: <0.25V = OFF, >2V = ON), and SHDNN controls the negative regulator identically. Both pins draw <1µA in normal operation and <4µA at full logic-high voltage, enabling low-power microcontroller interfacing without level shifters.
What output capacitor types are qualified for stable operation with LT3032EDE-15#TRPBF?
The LT3032EDE-15#TRPBF is stable with ≥2.2µF ceramic, tantalum, or aluminum electrolytic capacitors on both OUTP and OUTN pins - explicitly stated in the Features list and Electrical Characteristics table. Ceramic capacitors are preferred for low ESR, compact size, and superior high-frequency noise filtering in precision applications.
LT3032EDE-15#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-PowerWFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive and Negative
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- ±20V
- Voltage - Output (Min/Fixed):
- ±15V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.27V @ 150mA (Typ), 0.3V @ 150mA (Typ)
- Current - Output:
- 150mA, 150mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- 68dB (120Hz), 54dB (120Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DFN (4x3)
LT3032EDE-15#TRPBF FAQ
1.How can I place an order for LT3032EDE-15#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT3032EDE-15#TRPBF 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 LT3032EDE-15#TRPBF reliable?
The price and inventory of LT3032EDE-15#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT3032EDE-15#TRPBF is usually 5 days.
3.What payment methods are accepted for LT3032EDE-15#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT3032EDE-15#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT3032EDE-15#TRPBF?
LT3032EDE-15#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT3032EDE-15#TRPBF 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 LT3032EDE-15#TRPBF?
For technical support, including LT3032EDE-15#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT3032EDE-15#TRPBF requirements.
6.How does Aetrix verify that LT3032EDE-15#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT3032EDE-15#TRPBF 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 LT3032EDE-15#TRPBF meets industry standards.
7.What is the process for return or replacement of LT3032EDE-15#TRPBF?
All LT3032EDE-15#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT3032EDE-15#TRPBF, 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 LT3032EDE-15#TRPBF part is unused and in its original packaging.
Return procedure for LT3032EDE-15#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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