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Analog Devices Inc. LTC3607EUD#TRPBF
- Part No.:
- LTC3607EUD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
LTC3607EUD#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 600MA DL 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,946
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Product details
Overview
LTC3607EUD#TRPBF from Analog Devices (formerly Linear Technology) is a dual-channel monolithic synchronous step-down DC/DC regulator delivering 600mA per channel from a 4.5V–15V input, featuring 2.25MHz fixed-frequency operation, 55µA quiescent current, and independent 0.6V feedback references enabling adjustable outputs from 0.6V to VIN - deployed in dual Li-ion battery-powered instrumentation requiring compact, high-efficiency dual-rail power.
For engineers reviewing the LTC3607EUD#TRPBF datasheet, LTC3607EUD#TRPBF pinout, LTC3607EUD#TRPBF application, or LTC3607EUD#TRPBF equivalent, key selection considerations include its dual-channel peak-current-mode control architecture, Burst Mode® vs pulse-skipping mode trade-off via MODE/SYNC pin, ±1.5% output voltage accuracy, 100% duty-cycle dropout capability, and thermally enhanced 3mm × 3mm QFN-16 package with exposed PGND pad.
Technical Context
The LTC3607EUD#TRPBF implements two identical peak-current-mode controlled buck regulators sharing a synchronized 2.25MHz clock, each with independent RUN, PGOOD, VFB, and SW pins. Its constant-frequency architecture ensures predictable EMI behavior and supports external synchronization from 1MHz to 4MHz via the MODE/SYNC pin.
It integrates P-channel high-side and N-channel low-side MOSFETs with typical RDS(ON) of 0.6Ω (top) and 0.25Ω (bottom), internal compensation, and independent soft-start (0.35ms). The device supports three operational modes - active, Burst Mode®, and pulse-skipping - selected by MODE/SYNC voltage level, with overvoltage/undervoltage protection active even during light-load sleep states.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 15V - supports dual Li-ion (8.4V max), automotive transients, and industrial 12V rails without pre-regulation. |
| Output Current per Channel | 600mA - sufficient for powering microcontrollers, sensors, and analog front-ends in space-constrained systems. |
| Switching Frequency | 2.25MHz (typical), synchronizable 1–4MHz - enables use of sub-1mm-height inductors and ceramic capacitors for ultra-compact layouts. |
| Quiescent Current | 55µA total - extends battery runtime in always-on portable devices such as medical monitors and IoT edge nodes. |
| Feedback Reference Voltage | 0.6V ±1.5% - allows precise low-voltage regulation (e.g., 1.2V, 1.8V, 3.3V) with minimal resistor divider error. |
| Output Voltage Accuracy | ±1.5% over line, load, and temperature - meets tight tolerance requirements for ADC references and precision analog circuits. |
| Dropout Operation | 100% duty cycle - maintains regulation down to VOUT + ILOAD×RDS(ON), critical for battery end-of-discharge scenarios. |
| Shutdown Current | <1µA - enables true zero-power standby in wake-on-event architectures. |
Pinout & Package
Package: 16-lead (3mm × 3mm) plastic QFN with exposed thermal pad (Pin 17 = PGND), rated for –40°C to 125°C junction temperature, θJA = 68°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MODE/SYNC (Pin 1) | Mode select & sync input | Ground = pulse-skipping (low ripple); floating or ≥1V = Burst Mode® (high light-load efficiency); external clock input (1–4MHz). |
| PGOOD1 (Pin 2) | Channel 1 power-good indicator | Open-drain output pulled low if VOUT1 deviates >±8.5%; asserts after 64 cycles in regulation. |
| SVIN (Pin 3) | Supply voltage reference input | Master supply rail for internal LDOs and bias circuitry; must be connected to higher of PVIN1/PVIN2 or via diode OR-ing. |
| PGND1 (Pin 4) | Channel 1 power ground | High-current return path for SW1 loop; must be tied to local COUT1 and CIN ground planes. |
| SW1 (Pin 5) | Channel 1 switch node | Connection point between PVIN1, internal P-MOSFET, N-MOSFET, and external inductor - high dv/dt node requiring careful layout. |
| PVIN1 (Pin 6) | Channel 1 primary input supply | High-current input for Regulator 1; decoupled with ≥10µF ceramic capacitor close to pin. |
| PVIN2 (Pin 7) | Channel 2 primary input supply | Independent high-current input for Regulator 2 - enables dual-input or redundant supply configurations. |
| SW2 (Pin 8) | Channel 2 switch node | Connection point between PVIN2, internal P-MOSFET, N-MOSFET, and external inductor - isolated from SW1 for EMI reduction. |
| PGND2 (Pin 9) | Channel 2 power ground | High-current return path for SW2 loop; separate from PGND1 to minimize crosstalk between channels. |
| SGND (Pin 10) | Signal ground | Reference for RUN, VFB, PGOOD, and MODE/SYNC pins; must be connected to PGND at single point near IC. |
| PGOOD2 (Pin 11) | Channel 2 power-good indicator | Open-drain output pulled low if VOUT2 deviates >±8.5%; independent timing from PGOOD1. |
| VFB2 (Pin 14) | Channel 2 feedback input | Connects to resistor divider from VOUT2; regulates output to 0.6V at this pin - sets VOUT2 = 0.6V × (1 + R1/R2). |
| RUN2 (Pin 13) | Channel 2 enable input | Active-high logic input (VIH ≥3.0V); internal soft-start limits rise time to ≥0.35ms to prevent inrush current. |
| VFB1 (Pin 15) | Channel 1 feedback input | Connects to resistor divider from VOUT1; regulates output to 0.6V at this pin - sets VOUT1 = 0.6V × (1 + R1/R2). |
| RUN1 (Pin 16) | Channel 1 enable input | Active-high logic input (VIH ≥3.0V); independent control allows staggered startup or fault isolation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent synchronous buck regulators | Enables compact dual-rail supplies (e.g., 5V + 3.3V or 3.3V + 1.8V) on single chip with no cross-regulation penalty. |
| Burst Mode® operation | Delivers >85% efficiency at 1mA load per channel - essential for battery-powered standby modes. |
| Internal compensation | Eliminates need for external compensation network, reducing BOM count and layout sensitivity. |
| Independent soft-start per channel | Prevents input voltage droop and output overshoot during power-up; configurable via external capacitor on VFB pins. |
| Power-good outputs with blanking | 64-cycle delay ensures stable regulation before assertion - prevents false resets during transient recovery. |
| Thermally enhanced QFN package | Exposed PGND pad lowers thermal resistance (θJC = 7.5°C/W), supporting 600mA continuous operation at 85°C ambient. |
Applications
| Industrial Sensor Node | Automotive Infotainment Core |
|---|---|
Use Scenario: Compact wireless sensor node powered by two series Li-ion cells (6.0–8.4V), supplying 3.3V to MCU and 1.8V to RF transceiver. IC Role / Device Role / Timing Role: Dual-output DC/DC regulator providing isolated, efficient, and tightly regulated rails with independent enable control. Use Value: 55µA quiescent current extends battery life beyond 1 year in sleep mode; 2.25MHz switching minimizes solution size to fit within 12mm × 12mm PCB area. | Use Scenario: Central infotainment unit requiring 5V for display interface and 3.3V for audio codec, operating from 9–16V automotive battery with cold-crank immunity. IC Role / Device Role / Timing Role: Primary dual-rail power management IC handling input transients and delivering stable low-noise supplies. Use Value: 4.5V–15V input range survives 4.3V undervoltage lockout during cranking; 100% duty cycle maintains 3.3V output down to 3.6V input. |
| Medical Point-of-Care Monitor | Test & Measurement Instrumentation |
Use Scenario: Portable blood glucose analyzer using single-cell Li-ion (3.0–4.2V) boosted to 5V and regulated to 3.3V for digital logic and analog signal chain. IC Role / Device Role / Timing Role: Dual-buck regulator configured with PVIN1 = boost output (5V), PVIN2 = same rail, generating clean 3.3V and 1.2V outputs. Use Value: ±1.5% output accuracy ensures reliable ADC reference stability; low 30mVP-P ripple in Burst Mode® prevents noise coupling into sensitive analog measurements. | Use Scenario: Handheld oscilloscope requiring precise 2.5V reference and 1.2V core supply from 12V wall adapter, with strict EMI limits. IC Role / Device Role / Timing Role: Synchronized dual-buck controller operating at 2.25MHz to shift switching noise out of sensitive 10–100MHz measurement band. Use Value: External frequency synchronization eliminates beat frequencies; independent PGOOD signals validate rail sequencing before FPGA configuration. |
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 |
|---|---|---|---|
| TPS65270RGET | Higher 3A per channel rating; 2.2MHz fixed frequency; requires external compensation; no Burst Mode®. | Targeted at higher-power applications (e.g., FPGA core + I/O rails); less suitable for ultra-low-IQ battery operation. | Select when >600mA/channel output current or programmable frequency is required; avoid when <100µA IQ is mandatory. |
| MAX20006AATP+ | Automotive AEC-Q100 Grade-1; 600mA/channel; 2.1MHz; integrated spread-spectrum; 2.5µA shutdown IQ. | Designed for automotive cockpit modules; includes watchdog timer and fault reporting via I2C. | Select for automotive production programs requiring qualification and diagnostics; not recommended for cost-sensitive consumer designs. |
Compared with TPS65270RGET and MAX20006AATP+, the LTC3607EUD#TRPBF offers superior light-load efficiency (55µA vs >100µA) and simpler layout (internal compensation), but lacks automotive qualification and high-current capability - making it optimal for space- and battery-life-constrained industrial and portable instrumentation.
Availability
LTC3607EUD#TRPBF is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical devices, and test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LTC3607EUD#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, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors.
The LTC3607EUD#TRPBF belongs to Linear's µPower DC/DC regulator product line, engineered specifically for battery-powered and space-constrained applications demanding ultra-low quiescent current, high efficiency across load range, and minimal external components.
FAQ
What is the maximum input voltage supported by the LTC3607EUD#TRPBF?
The LTC3607EUD#TRPBF supports an absolute maximum input voltage of 15V on PVIN1, PVIN2, and SVIN pins. Its specified operating input range is 4.5V to 15V, making it suitable for dual Li-ion battery packs (up to 8.4V), 12V industrial rails, and automotive applications with transient suppression. Exceeding 15V risks permanent damage per Absolute Maximum Ratings.
Does the LTC3607EUD#TRPBF require external compensation components?
No, the LTC3607EUD#TRPBF features fully internal compensation - no external Type-II or Type-III compensation network is needed. This simplifies design, reduces bill-of-materials count, and improves layout robustness. Stability is guaranteed across the full operating range with standard ceramic output capacitors and recommended inductor values.
How does the MODE/SYNC pin affect the performance of the LTC3607EUD#TRPBF?
The MODE/SYNC pin on the LTC3607EUD#TRPBF serves dual functions: grounding selects pulse-skipping mode (lowest output ripple, ~30mVP-P), while floating or applying ≥1V enables Burst Mode® (highest light-load efficiency, 55µA IQ). When driven by an external 1–4MHz clock, it forces pulse-skipping and synchronizes both channels - critical for EMI-sensitive applications.
Can the LTC3607EUD#TRPBF operate with only one channel enabled?
Yes, the LTC3607EUD#TRPBF supports independent channel control: pulling RUN1 low disables Channel 1 while Channel 2 remains active, and vice versa. In single-channel operation, quiescent current drops to 35µA (typical), and the disabled channel's PGOOD remains low. This enables flexible power sequencing and dynamic rail management in multi-voltage systems.
What thermal considerations apply to the LTC3607EUD#TRPBF in continuous 600mA operation?
In continuous 600mA per channel operation at 12VIN/3.3VOUT, the LTC3607EUD#TRPBF dissipates ~0.4W. With θJA = 68°C/W and 25°C ambient, junction temperature reaches ~53°C - well within the –40°C to 125°C rating. Full thermal performance requires soldering the exposed PGND pad (Pin 17) to ≥2cm² of inner-layer copper pour with ≥4 thermal vias.
LTC3607EUD#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFQFN 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-QFN (3x3)
LTC3607EUD#TRPBF FAQ
1.How can I place an order for LTC3607EUD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3607EUD#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 LTC3607EUD#TRPBF reliable?
The price and inventory of LTC3607EUD#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3607EUD#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3607EUD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3607EUD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3607EUD#TRPBF?
LTC3607EUD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3607EUD#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 LTC3607EUD#TRPBF?
For technical support, including LTC3607EUD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3607EUD#TRPBF requirements.
6.How does Aetrix verify that LTC3607EUD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3607EUD#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 LTC3607EUD#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3607EUD#TRPBF?
All LTC3607EUD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3607EUD#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 LTC3607EUD#TRPBF part is unused and in its original packaging.
Return procedure for LTC3607EUD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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