My Inquiry
My Account
Analog Devices Inc. LTC3407IMSE-2#PBF
- Part No.:
- LTC3407IMSE-2#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC3407IMSE-2#PBF.pdf
- Description:
- IC REG BUCK ADJ 800MA DL 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,174
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3407IMSE-2#PBF from Analog Devices is a dual synchronous step-down DC/DC regulator delivering up to 800mA per channel from a 2.5V–5.5V input, operating at a fixed 2.25MHz switching frequency with internal 0.35Ω P-channel and 0.30Ω N-channel MOSFETs. It supports adjustable output voltages from 0.6V to 5V and enables low-noise or high-efficiency operation via MODE/SYNC pin selection-used in portable media players, digital cameras, and cellular phones.
For engineers reviewing the LTC3407IMSE-2#PBF datasheet, LTC3407IMSE-2#PBF pinout, LTC3407IMSE-2#PBF application, or LTC3407IMSE-2#PBF equivalent, key selection criteria include guaranteed –40°C to 125°C operation, 40µA quiescent current in active mode, Burst Mode® vs pulse-skipping trade-offs, 100% duty-cycle dropout capability, and MSOP-10 package compatibility with thermal pad grounding requirements.
Technical Context
The LTC3407IMSE-2#PBF employs a constant-frequency current-mode control architecture with shared 2.25MHz clock across both channels, enabling precise in-phase switching and excellent transient response. Each channel integrates matched P-channel (0.35Ω) and N-channel (0.30Ω) synchronous power switches, eliminating external Schottky diodes while supporting peak switch currents up to 1.2A.
Its dual-loop design features independent RUN1/RUN2 enables, separate VFB1/VFB2 feedback inputs referenced to a trimmed 0.6V bandgap, and a common open-drain POR output asserting low when either output deviates beyond ±8.5% regulation-latched after 262,144 clock cycles (~117ms) once both outputs stabilize.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion, USB, and regulated 3.3V/5V rails without external LDO pre-regulation. |
| Switching Frequency | 2.25MHz (±25%) - enables use of 2.2µH inductors and ≤10µF ceramic output capacitors with ≤1.2mm profile. |
| Output Current per Channel | 800mA continuous - sufficient for core logic, memory I/O, and RF subsystems in portable devices. |
| Feedback Reference Voltage | 0.6V ±1.2% over –40°C to 125°C - sets output voltage via external resistor divider with minimal load regulation error (≤0.5%). |
| Quiescent Current | 40µA total (both channels) - extends battery runtime in always-on standby modes without compromising startup time. |
| Shutdown Current | <1µA - meets ultra-low-power system-level sleep requirements for automotive infotainment and IoT edge nodes. |
| Thermal Rating | TJMAX = 125°C, θJA = 45°C/W - requires exposed pad soldered to PCB ground plane for reliable 800mA operation at full temperature range. |
Pinout & Package
Package: 10-Lead Plastic MSOP with exposed power ground pad (Pin 11), rated for –40°C to 125°C operation and optimized for thermal dissipation in space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VFB1 (Pin 1) | Channel 1 Feedback Input | Connects to resistive divider on VOUT1; regulates output by comparing divided voltage to 0.6V reference. |
| RUN1 (Pin 2) | Channel 1 Enable Control | High = enable; low = shutdown; must be actively driven-floating causes undefined behavior. |
| VIN (Pin 3) | Main Power Input | Supplies both regulators; requires local 10µF ceramic decoupling to GND with short trace routing. |
| SW1 (Pin 4) | Channel 1 Switch Node | Connects to inductor; swings between VIN and GND; layout critical for EMI and efficiency. |
| GND (Pin 5) | Analog Ground Reference | Separate from PGND; connects to shield plane and feedback network ground return. |
| MODE/SYNC (Pin 6) | Mode Selection & Sync Input | GND = pulse-skipping (low ripple); VIN = Burst Mode® (high efficiency); external clock sync forces pulse-skipping. |
| SW2 (Pin 7) | Channel 2 Switch Node | Identical function to SW1; must be routed symmetrically for balanced thermal performance. |
| POR (Pin 8) | Power-On Reset Output | Open-drain; pulls low if either VOUT1 or VOUT2 is outside ±8.5%; releases after ~117ms in regulation. |
| RUN2 (Pin 9) | Channel 2 Enable Control | Independent enable for second regulator; allows staggered power sequencing or dynamic channel disable. |
| VFB2 (Pin 10) | Channel 2 Feedback Input | Same function as VFB1; supports independent output voltage programming for dual-rail systems. |
| PGND (Pin 11) | Power Ground Pad | Exposed thermal pad; must be soldered to large PCB ground plane for thermal conduction and low-impedance return path. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel synchronous buck topology | Eliminates external Schottky diodes and reduces BOM count while maintaining >95% peak efficiency at 800mA. |
| Burst Mode® and pulse-skipping selection | User-selectable via MODE/SYNC pin-enables optimization for battery life (Burst) or noise-sensitive analog circuitry (pulse-skipping). |
| 100% duty-cycle dropout operation | Maintains regulation down to VIN ≈ VOUT + IOUT × RDS(ON); critical for Li-ion battery end-of-discharge support. |
| Integrated 0.6V precision reference | Guaranteed 0.585V–0.612V over full –40°C to 125°C range-ensures stable output voltage across automotive and industrial environments. |
| Power-On Reset with fault detection | Single POR pin monitors both outputs; asserts low during undervoltage/overvoltage faults and provides synchronized system reset timing. |
Applications
| Digital Camera Power Management | Cellular Phone Baseband Supply |
|---|---|
Use Scenario: Dual-rail power for image sensor (1.8V) and ISP processor (2.5V) in compact camera modules. IC Role / Device Role / Timing Role: Primary dual-output DC/DC regulator providing tightly regulated, low-noise supplies with fast transient response to burst-mode imaging loads. Use Value: 2.25MHz operation enables miniature 2.2µH inductors and 10µF ceramic caps, reducing solution footprint by >40% versus 500kHz alternatives. | Use Scenario: Independent 1.2V core and 2.8V RF transceiver supplies in LTE handsets with aggressive size constraints. IC Role / Device Role / Timing Role: Synchronous buck controller delivering 800mA per rail with Burst Mode® extending talk-time during idle periods. Use Value: 40µA quiescent current and <1µA shutdown draw directly increase battery cycle count in always-connected mobile devices. |
| Portable Media Player SoC Core | Automotive Infotainment Display Backlight |
Use Scenario: Dual-core SoC requiring 1.0V CPU and 1.8V GPU rails with tight voltage tolerance and low ripple. IC Role / Device Role / Timing Role: High-efficiency dual buck regulator supporting dynamic voltage scaling and rapid load transitions during video decode. Use Value: Current-mode control delivers <50µs recovery from 100mA→800mA load steps-prevents frame drops or audio artifacts. | Use Scenario: Dual 3.3V and 5.0V supplies for TFT LCD bias and LED driver ICs in dashboard displays. IC Role / Device Role / Timing Role: AEC-Q100 qualified dual regulator handling cold-crank (4.5V) to load-dump (18V) transients via upstream protection. Use Value: –40°C to 125°C rating and 125°C junction limit ensure uninterrupted operation under hood temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62150ARGTR | Single-channel 1A buck; 2.5V–6V input; 2.5MHz fixed frequency; no integrated POR or MODE pin. | Requires two devices for dual-rail; lacks power-good monitoring and selectable light-load modes. | Choose when only one rail is needed and board area permits discrete dual implementation. |
| RTQ2132BGQW | Dual 1A buck; 2.7V–5.5V input; 2MHz frequency; 0.45Ω/0.35Ω RDS(ON); no Burst Mode®, only forced PWM. | Higher quiescent current (65µA); no dropout mode; limited to 85°C ambient. | Prefer for cost-sensitive industrial applications where extended temperature range is not required. |
Compared with TPS62150ARGTR and RTQ2132BGQW, the LTC3407IMSE-2#PBF uniquely combines dual-channel integration, –40°C to 125°C operation, programmable light-load behavior, and a dedicated POR output-making it optimal for thermally demanding, safety-aware portable and automotive systems where component count and reliability are critical.
Availability
LTC3407IMSE-2#PBF is available at Aetrix Electronics and suitable for digital cameras, cellular phones, portable media players, automotive infotainment displays, and industrial handheld terminals requiring stable component supply across extended temperature ranges.
Supply support for LTC3407IMSE-2#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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets.
The LTC3407-2 product line delivers compact, high-frequency dual buck regulators optimized for battery-powered portable electronics and automotive subsystems where efficiency, thermal performance, and functional integration are essential.
FAQ
What is the maximum output current per channel for the LTC3407IMSE-2#PBF?
The LTC3407IMSE-2#PBF delivers up to 800mA continuous output current per channel under typical conditions (VIN ≥ 3.0V, TA ≤ 85°C). At higher ambient temperatures or lower input voltages, derating applies due to thermal limits-maximum junction temperature is 125°C, and the MSOP package's θJA is 45°C/W. The internal 1.2A peak switch current limit ensures robustness during transient overload events without latch-off.
How does the MODE/SYNC pin affect LTC3407IMSE-2#PBF operation?
The MODE/SYNC pin on the LTC3407IMSE-2#PBF selects between Burst Mode® (pin tied to VIN) for highest light-load efficiency or pulse-skipping mode (pin tied to GND) for lowest output voltage ripple. When driven by an external 2.25MHz clock, it forces pulse-skipping mode and synchronizes switching edges-critical for noise-sensitive applications like audio codecs or RF receivers where deterministic switching harmonics must be avoided.
Can LTC3407IMSE-2#PBF operate with input voltage below 2.5V?
No-the LTC3407IMSE-2#PBF has a specified minimum input voltage of 2.5V per Absolute Maximum Ratings and Electrical Characteristics tables. Operation below this threshold risks failure to regulate, erratic POR behavior, or undervoltage lockout activation. For sub-2.5V battery inputs, consider the LTC3522 (1.8V–5.5V input) or redesign with a pre-boost stage before the LTC3407IMSE-2#PBF.
What is the purpose of the exposed pad (Pin 11) on the LTC3407IMSE-2#PBF?
The exposed pad (Pin 11) on the LTC3407IMSE-2#PBF is the power ground (PGND) connection and serves as the primary thermal conduction path. It must be soldered to a large PCB copper area connected to the system ground plane to achieve the specified θJA = 45°C/W and prevent thermal shutdown at full load. Leaving it unconnected or floating degrades efficiency, increases junction temperature, and may cause premature device failure.
Does LTC3407IMSE-2#PBF support output voltages below 0.6V?
No-the LTC3407IMSE-2#PBF's internal reference is fixed at 0.6V, and the datasheet specifies a minimum output voltage of 0.6V. Attempting to set lower outputs via resistor divider violates the feedback comparator's operating range and results in loss of regulation. For sub-0.6V outputs, select a part with a lower reference (e.g., LTC3522 with 0.5V reference) or add an external reference buffer circuit-not recommended for production due to stability and accuracy penalties.
LTC3407IMSE-2#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) 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):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 800mA
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP-EP
LTC3407IMSE-2#PBF FAQ
1.How can I place an order for LTC3407IMSE-2#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3407IMSE-2#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 LTC3407IMSE-2#PBF reliable?
The price and inventory of LTC3407IMSE-2#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3407IMSE-2#PBF is usually 5 days.
3.What payment methods are accepted for LTC3407IMSE-2#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3407IMSE-2#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3407IMSE-2#PBF?
LTC3407IMSE-2#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3407IMSE-2#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 LTC3407IMSE-2#PBF?
For technical support, including LTC3407IMSE-2#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3407IMSE-2#PBF requirements.
6.How does Aetrix verify that LTC3407IMSE-2#PBF is sourced from the original manufacturer or authorized distributors?
All LTC3407IMSE-2#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 LTC3407IMSE-2#PBF meets industry standards.
7.What is the process for return or replacement of LTC3407IMSE-2#PBF?
All LTC3407IMSE-2#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3407IMSE-2#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 LTC3407IMSE-2#PBF part is unused and in its original packaging.
Return procedure for LTC3407IMSE-2#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3407IMSE-2#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…
