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Analog Devices Inc. LTC3607IMSE#TRPBF
- Part No.:
- LTC3607IMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC3607IMSE#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 600MA DL 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,727
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Product details
Overview
LTC3607IMSE#TRPBF from Analog Devices (formerly Linear Technology) is a dual-channel monolithic synchronous step-down DC/DC regulator delivering 600mA per channel with 55µA quiescent current, operating from 4.5V to 15V input and supporting adjustable outputs from 0.6V to VIN. It features 2.25MHz fixed-frequency operation, internal compensation, and independent power-good outputs - deployed in dual Li-ion battery-powered instrumentation requiring compact, high-efficiency dual-rail supplies.
For engineers reviewing the LTC3607IMSE#TRPBF datasheet, LTC3607IMSE#TRPBF pinout, LTC3607IMSE#TRPBF application, or LTC3607IMSE#TRPBF equivalent, key selection criteria include its dual-channel 600mA capability, 2.25MHz switching frequency enabling sub-1mm-height magnetics, Burst Mode® vs pulse-skipping mode trade-off, ±1.5% output voltage accuracy, and MSOP-16 thermal performance (θJA = 37°C/W).
Technical Context
The LTC3607IMSE#TRPBF employs a peak current-mode control architecture with synchronized 2.25MHz clocking across both channels, enabling tight transient response and deterministic phase alignment. Each channel integrates P-channel high-side and N-channel low-side MOSFETs with RDS(ON) of 0.6Ω (top) and 0.25Ω (bottom), supporting 100% duty-cycle dropout operation.
Its MODE/SYNC pin serves dual functions: selecting between Burst Mode® (for <1µA shutdown IQ and highest light-load efficiency) and pulse-skipping mode (for lowest output ripple), while also accepting external 1MHz–4MHz synchronization signals. Independent RUN1/RUN2 enables staggered startup and fault-isolated shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 15V - supports dual Li-ion (8.4V max) and automotive 12V systems without pre-regulation. |
| Output Current per Channel | 600mA - sufficient for powering microcontrollers, sensors, and analog front-ends in portable equipment. |
| Switching Frequency | 2.25MHz (fixed) - enables use of 4.7µH inductors ≤1mm height and 10µF ceramic output capacitors. |
| Quiescent Current | 55µA total - extends battery runtime in always-on monitoring applications. |
| Feedback Reference Voltage | 0.6V ±1.5% - allows precise low-voltage regulation down to 0.6V with minimal divider current. |
| Power Good Accuracy | ±8.5% window - provides reliable sequencing and fault detection for downstream logic and ADCs. |
| Shutdown Current | <1µA - ensures negligible drain during system sleep states. |
Pinout & Package
Package: 16-Lead Plastic MSOP (3mm × 4.9mm), thermally enhanced with exposed PGND pad (Pin 17). θJA = 37°C/W enables sustained 600mA/channel operation without forced air.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MODE/SYNC (Pin 15) | Mode select & sync input | Ground = pulse-skipping (low ripple); float or ≥1V = Burst Mode® (high efficiency); 1–4MHz external clock accepted. |
| PGOOD1 / PGOOD2 (Pins 16, 9) | Open-drain status outputs | Pull low when respective VOUT deviates >±8.5%; 64-cycle blanking ensures glitch immunity during transients. |
| VFB1 / VFB2 (Pins 13, 12) | Feedback inputs | Compare divided output against 0.6V reference; 30nA bias current minimizes divider power loss. |
| RUN1 / RUN2 (Pins 14, 11) | Enable inputs | Logic-high (>3.0V) enables channel; internal 0.35ms soft-start prevents inrush current and output overshoot. |
| SW1 / SW2 (Pins 3, 6) | Switch node terminals | Connect to external inductors; swing between PVINx and PGNDx; require tight layout to minimize EMI. |
| PVIN1 / PVIN2 / SVIN (Pins 4, 5, 1) | Main power inputs | PVIN1/PVIN2 accept independent supplies; SVIN must be tied to higher of the two for proper biasing of internal LDOs. |
| PGND1 / PGND2 / SGND / PGND (Pins 2, 7, 8, 10, Exposed Pad) | Ground terminals | Separate power and signal grounds reduce noise coupling; exposed pad must be soldered for thermal and electrical integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulators | Enables simultaneous 5V/3.3V rails with separate enable, feedback, and power-good signals - simplifies multi-rail sequencing. |
| Burst Mode® operation | Delivers >85% efficiency at 1mA load (VIN=12V, VOUT=3.3V), critical for battery longevity in intermittent-sensing devices. |
| 100% duty-cycle dropout | Maintains regulation as input drops to VOUT + ILOAD×RDS(ON), eliminating need for backup LDOs in brownout conditions. |
| Internal compensation | Reduces BOM count by eliminating external Type-II/III compensation networks - accelerates design validation. |
| External frequency synchronization | Allows noise-sensitive systems (e.g., RF receivers, precision ADCs) to lock switching to non-interfering bands or avoid AM radio bands. |
Applications
| Portable Medical Sensors | Dual-Rail Industrial PLC Modules |
|---|---|
Use Scenario: Wearable ECG patch with ultra-low-power MCU, analog front-end, and BLE radio requiring isolated 3.3V and 5V rails from single 8.4V Li-ion pack. IC Role / Device Role / Timing Role: Dual synchronous buck regulator providing regulated, low-noise power with independent enable and power-good signaling for safe startup and fault isolation. Use Value: 55µA quiescent current extends battery life beyond 7 days; Burst Mode® maintains >90% efficiency at sensor idle current (200µA). | Use Scenario: DIN-rail mounted programmable logic controller with FPGA, isolated I/O drivers, and RS-485 transceivers needing tightly regulated 3.3V and 5V supplies from 12V industrial bus. IC Role / Device Role / Timing Role: Dual-channel DC/DC converter delivering stable, sequenced power with independent PGOOD outputs for FPGA configuration and I/O initialization timing. Use Value: ±1.5% output accuracy ensures reliable FPGA core voltage; 2.25MHz switching avoids interference with 1MHz CAN FD bus clocks. |
| Automotive Infotainment Head Units | Test & Measurement Handheld Analyzers |
Use Scenario: In-dash navigation system powered from 12V vehicle battery, requiring clean 3.3V for SoC and 5V for display backlight drivers under cold-crank (6.5V min) and load-dump (18V max) conditions. IC Role / Device Role / Timing Role: Dual buck regulator with wide 4.5V–15V input range and 100% duty-cycle dropout, enabling direct battery connection without pre-buck stage. Use Value: UVLO threshold at 3.4V prevents erratic behavior during cranking; PGOOD outputs coordinate SoC reset and display enable sequencing. | Use Scenario: Battery-operated oscilloscope with 12-bit ADC, LCD controller, and USB interface requiring low-noise, low-ripple 3.3V and 5V rails from 2S Li-ion (6–8.4V). IC Role / Device Role / Timing Role: Dual synchronous buck with pulse-skipping mode selected via grounded MODE/SYNC pin to minimize switching noise near sensitive analog signal paths. Use Value: Typical 30mVP-P ripple in pulse-skipping mode meets ADC SNR requirements; MSOP package fits constrained PCB real estate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65270QDAPRQ1 | Automotive-grade AEC-Q100, 3A per channel, 2.2MHz, but requires external compensation and lacks Burst Mode®. | Targeted at automotive infotainment with higher current demand and qualification requirements. | Select when AEC-Q100 compliance and >1A per channel are mandatory; accept added design complexity for compensation. |
| ISL8026IRZ-T7A | 600mA per channel, 2.5MHz, ±2% VREF accuracy, no MODE pin - only pulse-skipping operation. | Suitable for cost-sensitive industrial applications where ripple is prioritized over light-load efficiency. | Choose when strict 30mVP-P ripple is required and 55µA IQ is not critical; verify thermal margin with θJA = 45°C/W. |
Compared with TPS65270QDAPRQ1 and ISL8026IRZ-T7A, the LTC3607IMSE#TRPBF uniquely combines ultra-low quiescent current (55µA), integrated Burst Mode®, and internal compensation in an MSOP package - making it optimal for space-constrained, battery-sensitive dual-rail systems where efficiency at microamp loads matters most.
Availability
LTC3607IMSE#TRPBF is available at Aetrix Electronics and suitable for portable medical sensors, dual-rail industrial PLC modules, automotive infotainment head units, and test & measurement handheld analyzers requiring stable component supply across extended temperature ranges (–40°C to 125°C).
Supply support for LTC3607IMSE#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 and maintains its legacy of high-performance power management ICs with rigorous characterization and long-term product support.
The LTC3607IMSE#TRPBF belongs to Linear's monolithic synchronous buck regulator family, designed specifically for compact, high-efficiency dual-output power conversion in battery-powered and space-constrained systems.
FAQ
What is the maximum junction temperature rating for the LTC3607IMSE#TRPBF?
The LTC3607IMSE#TRPBF has a maximum junction temperature (TJMAX) of 125°C. Its MSOP package delivers θJA = 37°C/W, meaning at 25°C ambient and full 600mA/channel load, junction temperature rises approximately 45°C above ambient - well within safe operating limits. Thermal derating is required above 85°C ambient.
Does the LTC3607IMSE#TRPBF support independent output voltage adjustment?
Yes, the LTC3607IMSE#TRPBF supports fully independent output voltage adjustment via separate resistor dividers on VFB1 and VFB2 pins. Each output can be set from 0.6V to VIN using the formula VOUT = 0.6V × (1 + R1/R2), with ±1.5% reference accuracy ensuring tight regulation across temperature and load.
How does the MODE/SYNC pin affect light-load efficiency and output ripple in the LTC3607IMSE#TRPBF?
In the LTC3607IMSE#TRPBF, grounding the MODE/SYNC pin selects pulse-skipping mode - minimizing output ripple (typical 30mVP-P) at the cost of ~5–10% lower light-load efficiency. Leaving it floating or pulling it ≥1V enables Burst Mode®, achieving >85% efficiency at 1mA load but increasing ripple amplitude and frequency content.
Can the LTC3607IMSE#TRPBF operate with input voltage below 4.5V?
No - the LTC3607IMSE#TRPBF has a specified minimum input voltage of 4.5V per absolute maximum ratings and electrical characteristics. Its undervoltage lockout triggers at ~3.4V (rising), and operation below 4.5V violates guaranteed specifications; attempting to operate below this risks instability, reduced efficiency, or failure to regulate.
What is the purpose of the separate PVIN1, PVIN2, and SVIN pins on the LTC3607IMSE#TRPBF?
The LTC3607IMSE#TRPBF uses PVIN1 and PVIN2 to independently power each buck channel, while SVIN supplies internal bias circuitry. SVIN must be connected to the higher of PVIN1 or PVIN2 (via diode or direct tie) to ensure stable operation - enabling flexible power architectures such as one channel powered from a primary battery and the other from a backup source.
LTC3607IMSE#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
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 15V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 15V
- Current - Output:
- 600mA
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LTC3607IMSE#TRPBF FAQ
1.How can I place an order for LTC3607IMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3607IMSE#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 LTC3607IMSE#TRPBF reliable?
The price and inventory of LTC3607IMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3607IMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3607IMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3607IMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3607IMSE#TRPBF?
LTC3607IMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3607IMSE#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 LTC3607IMSE#TRPBF?
For technical support, including LTC3607IMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3607IMSE#TRPBF requirements.
6.How does Aetrix verify that LTC3607IMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3607IMSE#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 LTC3607IMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3607IMSE#TRPBF?
All LTC3607IMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3607IMSE#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 LTC3607IMSE#TRPBF part is unused and in its original packaging.
Return procedure for LTC3607IMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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