My Inquiry
My Account
Analog Devices Inc. LTC3607IUD#PBF
- Part No.:
- LTC3607IUD#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
LTC3607IUD#PBF.pdf
- Description:
- IC REG BUCK ADJ 600MA DL 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:822
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3607IUD#PBF from Analog Devices (formerly Linear Technology) is a dual-channel monolithic synchronous step-down DC/DC regulator delivering 600mA per channel with 2.25MHz fixed-frequency operation, 55µA quiescent current, and independent 0.6V feedback references-designed for dual-rail power in space-constrained lithium-ion battery-powered systems.
For engineers reviewing the LTC3607IUD#PBF datasheet, LTC3607IUD#PBF pinout, LTC3607IUD#PBF application, or LTC3607IUD#PBF equivalent, key selection criteria include verified 4.5V–15V input range, ±1.5% output voltage accuracy, Burst Mode® vs pulse-skipping mode trade-offs, PGOOD timing (64-cycle blanking), and thermal performance of the 3mm × 3mm QFN package with exposed PGND pad.
Technical Context
The LTC3607IUD#PBF employs peak current-mode control with independent error amplifiers and internal compensation per channel, enabling fast line/load transient response without external loop components. Its constant 2.25MHz switching frequency supports ceramic inductors ≤1mm height and reduces output filter size.
Each channel features independent RUN enable inputs, VFB pins referenced to a trimmed 0.6V bandgap, and open-drain PGOOD outputs asserting low when output deviates >±8.5% from regulation. The MODE/SYNC pin serves dual functions: selecting Burst Mode® (floating or ≥1V) for highest light-load efficiency or pulse-skipping (grounded) for lowest ripple, while also accepting external 1MHz–4MHz synchronization clocks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 15V - supports dual Li-ion batteries (8.4V nominal) and automotive 12V systems without pre-regulation. |
| Output Current per Channel | 600mA - rated continuous output with internal 0.75A peak switch current limit and thermal derating. |
| Switching Frequency | 2.25MHz (typical) - enables use of 4.7µH inductors and 10µF ceramic output capacitors in compact layouts. |
| Quiescent Current | 55µA total - extends battery runtime in always-on subsystems such as real-time clocks or sensor wake logic. |
| Feedback Reference Voltage | 0.6V ±1.5% - allows precise 3.3V and 5V outputs using standard resistor ratios; sets minimum VOUT = 0.6V. |
| Power Good Accuracy | ±8.5% window with 64-cycle blanking - ensures reliable system sequencing and avoids false fault assertions during startup or transients. |
| Shutdown Current | <1µA - meets ultra-low-power shutdown requirements for portable medical or IoT edge nodes. |
Pinout & Package
Package: 16-lead 3mm × 3mm plastic QFN (UD package) with exposed PGND pad (Pin 17), rated for –40°C to 125°C junction temperature and θJA = 68°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MODE/SYNC (Pin 1) | Multi-function control input | Selects Burst Mode® (≥1V) or pulse-skipping (GND); accepts external sync clock 1–4MHz. |
| PGOOD1 (Pin 2) | Open-drain status output | Pulls low when VOUT1 deviates >±8.5%; releases after 64 clock cycles upon regulation. |
| SVIN (Pin 3) | Supply voltage reference input | Master input rail for internal LDOs and bias circuits; must be connected to higher of PVIN1/PVIN2. |
| PGND1 (Pin 4) | Power ground for Channel 1 | Return path for high-current SW1 switching node; must connect to local COUT1 ground plane. |
| SW1 (Pin 5) | Channel 1 switch node | Connects to inductor; switches between PVIN1 and PGND1; requires tight layout to minimize EMI. |
| PVIN1 (Pin 6) | Channel 1 primary input | High-side power input for Regulator 1; decoupled with 10µF ceramic capacitor. |
| PVIN2 (Pin 7) | Channel 2 primary input | High-side power input for Regulator 2; supports independent input sourcing from different rails. |
| SW2 (Pin 8) | Channel 2 switch node | Connects to inductor; switches between PVIN2 and PGND2; shares same clock phase as SW1. |
| PGND2 (Pin 9) | Power ground for Channel 2 | Return path for high-current SW2 switching node; separate from PGND1 for noise isolation. |
| SGND (Pin 10) | Signal ground reference | Analog ground for feedback, RUN, and MODE/SYNC pins; must tie to PGND at single point. |
| PGOOD2 (Pin 11) | Open-drain status output | Independent assertion for VOUT2; identical timing and threshold behavior as PGOOD1. |
| VFB2 (Pin 14) | Channel 2 feedback input | Compares divided VOUT2 to 0.6V reference; sets output via R1/R2 divider (e.g., 3.3V = 0.6V × (1 + 4.5kΩ/1kΩ)). |
| RUN2 (Pin 13) | Channel 2 enable input | Active-high enable (VIH ≥ 3.0V); internal soft-start limits rise time to ≥0.35ms. |
| VFB1 (Pin 15) | Channel 1 feedback input | Identical function to VFB2; supports independent output voltage programming per channel. |
| RUN1 (Pin 16) | Channel 1 enable input | Active-high enable (VIH ≥ 3.0V); enables/disables regulator independently of RUN2. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulators | Enables simultaneous 5V/3.3V rails with separate RUN, PGOOD, and feedback-no cross-talk or shared failure modes. |
| Burst Mode® operation | Reduces quiescent current to 55µA while maintaining regulation; ideal for battery-backed RTC, memory retention, or sensor sleep states. |
| 100% duty cycle dropout | Continues regulation down to VOUT ≈ VIN − RDS(ON) × ILOAD; maintains output during brown-out without external diode OR-ing. |
| Internal soft-start per channel | 0.35ms minimum ramp time prevents inrush current on power-up; eliminates need for external RC networks. |
| Thermally enhanced QFN | Exposed PGND pad (Pin 17) provides low-thermal-resistance path to PCB; supports 600mA/channel at TA ≤ 85°C with minimal copper. |
Applications
| Industrial Control Sensors | Automotive Infotainment |
|---|---|
Use Scenario: Powering isolated analog front-ends and microcontrollers in programmable logic controllers with dual 3.3V/5V rails. IC Role / Device Role / Timing Role: Dual synchronous buck regulator providing regulated, low-noise supplies with independent sequencing and fault reporting. Use Value: 55µA quiescent current extends backup battery life; PGOOD outputs coordinate FPGA configuration and ADC calibration sequences. | Use Scenario: Supplying head unit SoC core (1.2V), I/O (3.3V), and display backlight (5V) from 12V vehicle battery. IC Role / Device Role / Timing Role: Primary dual-output DC/DC converter handling wide-input transients (4.5V–15V) and cold-crank conditions. Use Value: 100% duty cycle operation sustains 3.3V rail during 6V cranking; 2.25MHz switching avoids AM radio band interference. |
| Portable Medical Devices | Network Edge Routers |
Use Scenario: Powering Bluetooth LE modules and precision biosensor signal chains in handheld diagnostic tools. IC Role / Device Role / Timing Role: Dual rail generator supporting low-power active mode (Burst Mode®) and ultra-low-power sleep (shutdown <1µA). Use Value: Independent RUN pins allow selective channel shutdown; ±1.5% VFB accuracy ensures consistent ADC reference stability. | Use Scenario: Generating 3.3V management rail and 5V PoE interface supply in compact 1U rack-mounted switches. IC Role / Device Role / Timing Role: High-efficiency secondary regulator converting 12V intermediate bus to dual point-of-load voltages. Use Value: 96% peak efficiency reduces thermal load in dense board layouts; MODE/SYNC pin enables system-wide clock synchronization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65270RGET | Higher 3A per channel rating; 2.1MHz switching; requires external compensation; no Burst Mode® | Targeted at higher-power industrial motor drives; lacks ultra-low IQ for battery longevity | Choose TPS65270RGET only when >1A/channel output or adjustable frequency is required; not drop-in due to compensation and enable logic differences. |
| MAX20006AATP+T | Automotive AEC-Q100 Grade 1; integrated spread-spectrum; 2.2MHz; 600mA/channel; 28µA IQ | Designed for automotive infotainment with stricter EMI and qualification requirements | Prefer MAX20006AATP+T for automotive production; LTC3607IUD#PBF remains optimal for industrial and portable non-automotive designs. |
Compared with TPS65270RGET and MAX20006AATP+T, the LTC3607IUD#PBF delivers superior light-load efficiency (55µA vs 28–100µA), simpler design (internal compensation), and proven reliability in space-constrained portable systems-making it the preferred choice where dual 600mA rails, minimal BOM count, and battery runtime are critical.
Availability
LTC3607IUD#PBF is available at Aetrix Electronics and suitable for industrial control sensors, portable medical devices, automotive infotainment subsystems, and network edge routers requiring stable component supply across extended temperature ranges.
Supply support for LTC3607IUD#PBF 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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC3607IUD#PBF belongs to ADI's legacy Linear Technology power management portfolio, specifically engineered for compact, high-efficiency dual-output DC/DC conversion in battery-powered and thermally constrained applications.
FAQ
What is the maximum input voltage the LTC3607IUD#PBF can handle?
The LTC3607IUD#PBF supports an absolute maximum input voltage of 15V on PVIN1, PVIN2, and SVIN pins. Its recommended operating input range is 4.5V to 15V, making it suitable for dual-cell Li-ion (8.4V) and automotive 12V systems. Exceeding 15V risks permanent damage per Absolute Maximum Ratings.
Does the LTC3607IUD#PBF require external compensation components?
No, the LTC3607IUD#PBF features fully internal compensation for both channels. Its peak current-mode architecture with built-in error amplifiers eliminates the need for external compensation networks-reducing BOM count and layout complexity while ensuring stable operation with standard ceramic output capacitors.
How does the MODE/SYNC pin affect the LTC3607IUD#PBF's light-load performance?
The MODE/SYNC pin determines light-load behavior: floating or applying ≥1V enables Burst Mode®, minimizing quiescent current to 55µA but increasing output ripple (~30mVP-P); grounding selects pulse-skipping mode, reducing ripple at the cost of ~10–15% lower light-load efficiency. This pin also accepts 1–4MHz external clocks for system-level synchronization.
Can the two channels of the LTC3607IUD#PBF operate from different input sources?
Yes. PVIN1 and PVIN2 accept independent input supplies (e.g., separate battery cells or rails), while SVIN must be connected to the higher of the two. Internal circuitry ensures proper biasing and sequencing regardless of which input is dominant-enabling flexible power architectures like redundant battery switchover or hybrid energy harvesting systems.
What thermal considerations apply to the LTC3607IUD#PBF in its 3mm × 3mm QFN package?
The LTC3607IUD#PBF uses a thermally enhanced 3mm × 3mm QFN with exposed PGND pad (Pin 17) requiring soldering to a PCB thermal pad. Its θJA is 68°C/W; at 600mA/channel and 12V input, typical power dissipation is ~0.3W, resulting in ~20°C rise above ambient. Adequate copper area under the exposed pad is essential to maintain TJ ≤ 125°C in continuous operation.
LTC3607IUD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tube
- 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)
LTC3607IUD#PBF FAQ
1.How can I place an order for LTC3607IUD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3607IUD#PBF 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 LTC3607IUD#PBF reliable?
The price and inventory of LTC3607IUD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3607IUD#PBF is usually 5 days.
3.What payment methods are accepted for LTC3607IUD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3607IUD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3607IUD#PBF?
LTC3607IUD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3607IUD#PBF 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 LTC3607IUD#PBF?
For technical support, including LTC3607IUD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3607IUD#PBF requirements.
6.How does Aetrix verify that LTC3607IUD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC3607IUD#PBF 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 LTC3607IUD#PBF meets industry standards.
7.What is the process for return or replacement of LTC3607IUD#PBF?
All LTC3607IUD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3607IUD#PBF, 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 LTC3607IUD#PBF part is unused and in its original packaging.
Return procedure for LTC3607IUD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3607IUD#PBF Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
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…
