My Inquiry
My Account
Analog Devices Inc. LTC3260HMSE#TRPBF
- Part No.:
- LTC3260HMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC3260HMSE#TRPBF.pdf
- Description:
- IC REG CHARGE PUMP INV DL 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,997
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3260HMSE#TRPBF from Analog Devices is a low-noise dual-polarity power supply IC integrating an inverting charge pump (–VIN or –0.94·VIN output), a 50mA positive LDO+ regulator, and a 50mA negative LDO– regulator. It operates from 4.5V to 32V input, delivers ±12V outputs from a single 15V source, and features 100µA quiescent current in Burst Mode with both LDOs active - used in portable medical instrumentation requiring ultra-low noise bipolar bias.
For engineers reviewing the LTC3260HMSE#TRPBF datasheet, LTC3260HMSE#TRPBF pinout, LTC3260HMSE#TRPBF application, or LTC3260HMSE#TRPBF equivalent, key selection criteria include its programmable 50kHz–500kHz oscillator, LDO+ and LDO– independent voltage programming via external dividers, ±100µVRMS output noise (with 10nF bypass caps), thermal shutdown at ~175°C, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The LTC3260HMSE#TRPBF implements a two-stage architecture: a switched-capacitor inverting charge pump followed by post-regulation via separate LDO+ and LDO– linear regulators. The charge pump supports dual operating modes - constant-frequency (50kHz–500kHz, RT-programmable) delivering precise –VIN, or Burst Mode (hysteretic control) regulating VOUT to –0.94·VIN with 100µA IQ.
LDO+ draws directly from VIN and regulates up to +32V; LDO– draws from VOUT and regulates down to –32V. Both LDOs feature 1.2V (LDO+) and –1.2V (LDO–) precision internal references, adjustable output voltages, and 100µVRMS noise performance when bypassed with 10nF capacitors on BYP+ and BYP– pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 4.5V to 32V - supports wide-input industrial and automotive battery-supplied systems without pre-regulation. |
| Charge Pump Output | –VIN (constant freq) or –0.94·VIN (Burst Mode) - enables precise bipolar rail generation from single supply. |
| LDO+ / LDO– Current | 50mA each - sufficient for op-amp biasing, ADC/DAC reference supplies, and sensor excitation circuits. |
| Quiescent Current | 100µA with both LDOs on (Burst Mode) - extends battery life in portable medical devices. |
| Oscillator Frequency | 50kHz to 500kHz (RT-programmable) - allows trade-off between ripple, efficiency, and EMI filtering requirements. |
| Output Noise | 100µVRMS (10Hz–100kHz, with 10nF BYP+ and BYP– caps) - meets low-noise analog signal chain requirements. |
| Operating Temp | –40°C to +150°C (H-grade) - qualified for under-hood automotive and high-temp industrial environments. |
Pinout & Package
Package: 16-pin MSOP (MSE), 0.75mm profile, exposed thermal pad (Pin 17 = GND). Requires soldering of exposed pad to PCB ground plane for thermal performance (θJA = 43°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN+ | LDO+ Enable Input | Logic-high enables positive LDO; soft-start ramps output over 75µs to limit inrush. |
| RT | Oscillator Frequency Set | Resistor to GND programs fOSC from 50kHz to 500kHz; GND = 500kHz default. |
| BYP– | LDO– Reference Bypass | 10nF cap to GND reduces LDO– output noise by bypassing internal –1.2V reference. |
| ADJ– | LDO– Feedback Input | Serves as –1.2V reference node; sets VLDO– = –1.2V × (R1/R2 + 1) via external divider. |
| LDO– | Negative Regulator Output | Delivers up to –50mA; requires ≥2µF low-ESR ceramic capacitor to GND for stability. |
| VOUT | Charge Pump Output | Feeds LDO–; regulated to –VIN (constant freq) or –0.94·VIN (Burst Mode). |
| C– / C+ | Flying Capacitor Terminals | Switched nodes carrying high di/dt; require short, low-inductance traces and ≥1µF ceramic flying cap. |
| VIN | Main Power Input | Supplies charge pump and LDO+; must be bypassed with ≥2µF low-ESR ceramic cap. |
| LDO+ | Positive Regulator Output | Delivers up to +50mA; requires ≥2µF low-ESR ceramic capacitor to GND for stability. |
| EN– | Charge Pump & LDO– Enable | Logic-high enables charge pump and LDO–; initiates VOUT ramp-up and LDO– soft-start. |
| MODE | Operating Mode Select | High = Burst Mode (low IQ); Low = constant frequency (low ripple); no internal pull-up/down. |
| ADJ+ | LDO+ Feedback Input | Serves as +1.2V reference node; sets VLDO+ = 1.2V × (R1/R2 + 1) via external divider. |
| BYP+ | LDO+ Reference Bypass | 10nF cap to GND reduces LDO+ output noise by bypassing internal +1.2V reference. |
| GND | Ground / Exposed Pad | Pin 17 = exposed thermal pad; must be soldered to PCB ground plane for thermal and electrical integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent LDO regulation | Separate ADJ+/ADJ– and BYP+/BYP– pins enable independent noise-optimized biasing for analog front-ends. |
| Programmable switching frequency | RT resistor sets fOSC from 50kHz to 500kHz - enables EMI tuning and ripple/efficiency optimization. |
| Burst Mode with 100µA IQ | Enables ultra-low-power operation during light loads while maintaining regulation accuracy and fast wake-up. |
| AEC-Q100 qualified H-grade | Rated for –40°C to +150°C junction temperature - suitable for automotive infotainment and ADAS sensor power rails. |
| Stable with ceramic capacitors only | No electrolytic/tantalum required; simplifies BOM, improves reliability, and eliminates aging-related drift. |
Applications
| Portable Medical Ultrasound | Industrial Precision Data Acquisition |
|---|---|
Use Scenario: Biasing high-resolution transimpedance amplifiers and 24-bit delta-sigma ADCs in handheld ultrasound probes. IC Role / Device Role / Timing Role: Generates ultra-low-noise ±12V analog supply rails from a single 15V Li-ion battery pack. Use Value: 100µVRMS noise and >60dB LDO PSRR suppress switching artifacts, preserving SNR in sub-100nV signal paths. | Use Scenario: Powering isolated analog front-ends in factory-floor PLC I/O modules with 4–20mA loop interfaces. IC Role / Device Role / Timing Role: Provides stable, ripple-free ±15V rails for precision op-amps and voltage references in harsh EMI environments. Use Value: Constant-frequency mode (500kHz) minimizes conducted EMI; thermal shutdown protects against ambient overheating. |
| Automotive Radar Signal Conditioning | Portable Test & Measurement Equipment |
Use Scenario: Supplying low-noise bias to RF mixers and IF amplifiers in 77GHz radar receiver chains. IC Role / Device Role / Timing Role: Delivers ±5V rails from 12V vehicle battery with AEC-Q100 H-grade reliability and thermal robustness. Use Value: –40°C to +150°C operation ensures functionality in engine bay mounting; LDO rejection attenuates VOUT ripple to <10µVRMS. | Use Scenario: Generating dual-rail supplies for handheld oscilloscope front-end amplifiers and DAC-based arbitrary waveform generators. IC Role / Device Role / Timing Role: Replaces discrete charge pump + dual LDO solutions with single-chip integration and footprint reduction. Use Value: 3mm × 4mm MSOP package saves PCB area; programmable fOSC allows EMI compliance across multiple product variants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-polarity regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3261IMSE#TRPBF | Single-output inverting charge pump only (no LDO+); same VOUT specs, but lacks positive LDO stage. | Requires external +5V/+3.3V LDO for positive rail - increases component count and board area. | Select when only negative rail needed and space/cost constraints favor simpler topology. |
| MAX1759EUB+T | Fixed –5V output (non-adjustable), no LDO stages, lower max VIN (28V), no Burst Mode, higher IQ (250µA). | Not suitable for programmable bipolar rails or ultra-low-power portable designs. | Consider only for cost-sensitive, fixed-voltage, non-automotive applications where noise and IQ are secondary. |
Compared with LTC3260HMSE#TRPBF, LTC3261IMSE#TRPBF omits the positive LDO+ stage - reducing integration but requiring external regulation for positive rails. MAX1759EUB+T offers lower cost but sacrifices adjustability, noise performance, and automotive temperature range - limiting suitability for precision or high-reliability systems.
Availability
LTC3260HMSE#TRPBF is available at Aetrix Electronics and suitable for portable medical instrumentation, automotive radar signal conditioning, and industrial precision data acquisition requiring stable component supply across extended temperature ranges.
Supply support for LTC3260HMSE#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC3260 belongs to Analog Devices' precision power management product line, designed specifically for low-noise, bipolar supply generation in sensitive analog signal chains and portable instrumentation.
FAQ
What is the maximum junction temperature rating for the LTC3260HMSE#TRPBF?
The LTC3260HMSE#TRPBF is rated for operation up to +150°C junction temperature and is qualified per AEC-Q100 Grade H. Thermal shutdown activates at approximately 175°C to protect the device during overload conditions, and normal operation resumes once junction temperature drops to ~165°C. This makes the LTC3260HMSE#TRPBF suitable for under-hood automotive and high-ambient industrial applications where sustained thermal stress is expected.
Can the LTC3260HMSE#TRPBF generate both +12V and –12V simultaneously from a 15V input?
Yes, the LTC3260HMSE#TRPBF can generate ±12V simultaneously from a 15V input. In constant-frequency mode (MODE = low), the charge pump delivers VOUT ≈ –15V; the LDO– then regulates this to –12V, while the LDO+ regulates VIN = 15V to +12V. External resistor dividers on ADJ+ and ADJ– set the respective outputs using VLDO+ = 1.2V × (R1/R2 + 1) and VLDO– = –1.2V × (R1/R2 + 1). The typical application circuit (Fig TA01a) confirms this configuration.
How does Burst Mode operation affect output ripple and efficiency on the LTC3260HMSE#TRPBF?
Burst Mode operation on the LTC3260HMSE#TRPBF reduces quiescent current to 100µA but increases VOUT ripple due to hysteretic regulation (typical hysteresis = 2% of VIN). Ripple is minimized by selecting a low-ESR output capacitor and grounding the RT pin for 500kHz burst frequency. Efficiency improves at light loads because the charge pump shuts down between bursts, eliminating switching losses - making it ideal for battery-powered devices with intermittent analog signal processing.
What is the purpose of the BYP+ and BYP– pins on the LTC3260HMSE#TRPBF?
The BYP+ and BYP– pins on the LTC3260HMSE#TRPBF provide dedicated bypass connections for the internal +1.2V and –1.2V reference buffers. Connecting a 10nF ceramic capacitor from each pin to GND reduces reference noise coupling into the LDO feedback loops, lowering output voltage noise to 100µVRMS (10Hz–100kHz). Leaving these pins floating degrades noise performance; they must not be connected to any other node or left unterminated.
Does the LTC3260HMSE#TRPBF require external flying capacitors, and what value is recommended?
Yes, the LTC3260HMSE#TRPBF requires external flying capacitors across C+ and C– pins. A minimum of 1µF X7R/X5R ceramic capacitor is recommended for full 100mA charge pump output capability. For light-load applications (<20mA), a 0.2µF capacitor may suffice. Ceramic type is mandatory - tantalum or aluminum electrolytics introduce excessive ESR and degrade regulation, transient response, and noise performance. Layout must minimize trace inductance between C+ and C–.
LTC3260HMSE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Charge Pump
- Number of Outputs:
- 1
- Frequency - Switching:
- 50kHz ~ 500kHz
- Voltage/Current - Output 1:
- Adj, 100mA
- Voltage/Current - Output 2:
- -
- Voltage/Current - Output 3:
- -
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 4.5V ~ 32V
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LTC3260HMSE#TRPBF FAQ
1.How can I place an order for LTC3260HMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3260HMSE#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 LTC3260HMSE#TRPBF reliable?
The price and inventory of LTC3260HMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3260HMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3260HMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3260HMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3260HMSE#TRPBF?
LTC3260HMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3260HMSE#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 LTC3260HMSE#TRPBF?
For technical support, including LTC3260HMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3260HMSE#TRPBF requirements.
6.How does Aetrix verify that LTC3260HMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3260HMSE#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 LTC3260HMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3260HMSE#TRPBF?
All LTC3260HMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3260HMSE#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 LTC3260HMSE#TRPBF part is unused and in its original packaging.
Return procedure for LTC3260HMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3260HMSE#TRPBF Tags
-
TPS6521905RHBR
Texas Instruments
-
MIC3385YHL-TR
Microchip Technology
-
A4402ELPTR-T
Allegro MicroSystems
-
LM26480SQ-AA/NOPB
Texas Instruments
-
A4402KLPTR-T
Allegro MicroSystems
-
BD71847AMWV-E2
ROHM Semiconductor
-
ADP5040ACPZ-1-R7
Analog Devices Inc.
-
LT3048IDC#TRPBF
Analog Devices Inc.
-
ADP5037ACPZ-R7
Analog Devices Inc.
-
XRP7714ILB-F
MaxLinear, Inc.
-
LTC3260EDE#TRPBF
Analog Devices Inc.
-
LTC3260EMSE#PBF
Analog Devices Inc.
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
