My Inquiry
My Account
Analog Devices Inc. LTC3407AIMSE-2#TRPBF
- Part No.:
- LTC3407AIMSE-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC3407AIMSE-2#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 800MA DL 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,773
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3407AIMSE-2#TRPBF from Analog Devices (formerly Linear Technology) is a dual-channel synchronous step-down DC/DC converter optimized for low-power portable applications. It operates from 2.5V to 5.5V input, delivers up to 800mA per channel, supports adjustable output voltages from 0.6V to 5V, and features 2.25MHz fixed-frequency switching with Burst Mode™ operation achieving up to 95% efficiency and 40μA quiescent current. It is used in space-constrained battery-powered systems such as digital cameras and cellular handsets.
For engineers reviewing the LTC3407AIMSE-2#TRPBF datasheet, LTC3407AIMSE-2#TRPBF pinout, LTC3407AIMSE-2#TRPBF application, or LTC3407AIMSE-2#TRPBF equivalent, key selection criteria include its dual-output capability, 10-Lead MSOP package with exposed PGND pad, –40°C to 125°C operating temperature range, integrated 0.35Ω P-channel and 0.30Ω N-channel MOSFETs, and externally synchronizable 2.25MHz oscillator.
Technical Context
The LTC3407AIMSE-2#TRPBF implements a constant-frequency current-mode control architecture with shared 2.25MHz clock across both channels, enabling precise phase alignment and predictable EMI behavior. Each regulator uses internal P-channel high-side and N-channel low-side MOSFETs with confirmed RDS(ON) of 0.35Ω and 0.30Ω respectively, and supports independent enable/soft-start via RUN/SS1 and RUN/SS2 pins.
It integrates a 0.6V reference with ±0.012V tolerance over –40°C to 125°C, power-on reset (POR) with ±8.5% detection threshold and 65,536-cycle delay, and MODE/SYNC pin that selects between Burst Mode™ (40μA IQ) and pulse-skip mode (low ripple). Dropout operation at 100% duty cycle is supported with continuous P-channel conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion, Li-polymer, and 3.3V/5V rail inputs without external regulators |
| Switching Frequency | 2.25MHz (typ) - enables use of sub-3mm-height inductors and compact ceramic capacitors |
| Output Current per Channel | 800mA - sufficient for core logic, memory, and interface ICs in portable devices |
| Feedback Reference Voltage | 0.6V ±0.012V (–40°C to 125°C) - sets output accuracy and enables precise low-voltage regulation down to 0.6V |
| Quiescent Current | 40μA in Burst Mode™ - extends battery runtime in standby and light-load states |
| Shutdown Current | <1μA - minimizes battery drain during full system sleep |
| Operating Temperature | –40°C to 125°C - qualified for industrial and extended-temperature embedded applications |
Pinout & Package
Package: 10-Lead Plastic MSOP with exposed thermal pad (Pin 11 = PGND), rated for –40°C to 125°C operation and compatible with standard reflow profiles (lead-free finish, 300°C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VFB1 (Pin 1) | Regulator 1 Feedback Input | Connects to resistive divider to set VOUT1; 0.6V reference target enables accurate voltage programming |
| RUN/SS1 (Pin 2) | Regulator 1 Enable & Soft-Start | High = enable; RC network on this pin controls startup slew rate and inrush limiting |
| VIN (Pin 3) | Main Power Input | Supplies both channels; requires local 10μF ceramic decoupling to minimize noise and ringing |
| SW1 (Pin 4) | Regulator 1 Switch Node | Connects to inductor; swings between VIN and GND; layout critical for EMI and efficiency |
| GND (Pin 5) | Main Signal Ground | Reference for feedback, control, and POR; must be tied to exposed PGND pad (Pin 11) |
| MODE/SYNC (Pin 6) | Mode Selection & Clock Sync | VIN = Burst Mode™; GND = pulse-skip; external 2.25MHz signal forces synchronization and pulse-skip |
| SW2 (Pin 7) | Regulator 2 Switch Node | Identical function to SW1; independent inductor connection required |
| POR (Pin 8) | Power-On Reset Output | Open-drain active-low signal indicating either output is out of ±8.5% regulation |
| RUN/SS2 (Pin 9) | Regulator 2 Enable & Soft-Start | Independent control of second channel; same RC soft-start functionality as RUN/SS1 |
| VFB2 (Pin 10) | Regulator 2 Feedback Input | Same 0.6V reference as VFB1; allows independent output voltage setting for dual-rail systems |
| PGND (Pin 11) | Power Ground (Exposed Pad) | Mandatory solder connection to PCB ground plane; primary thermal and current return path |
Key Features
| Feature | Design Value |
|---|---|
| Dual synchronous buck topology | Eliminates need for external Schottky diodes; reduces BOM count and board area vs. asynchronous designs |
| Burst Mode™ operation | 40μA total quiescent current at light load preserves battery life without sacrificing regulation accuracy |
| Externally synchronizable oscillator | Prevents beat frequencies in multi-regulator systems; ensures deterministic EMI placement |
| 100% duty cycle dropout | Maintains regulation as input drops to output level; avoids brownout during battery discharge |
| Integrated power MOSFETs | 0.35Ω P-channel + 0.30Ω N-channel switches deliver >95% peak efficiency at 800mA with minimal thermal rise |
| Power-on reset with timer | Active-low POR signal with 65,536-cycle delay ensures reliable system initialization after power ramp |
Applications
| Digital Camera Core & I/O Rails | Cellular Handset Application Processor Supply |
|---|---|
Use Scenario: Dual-rail power for image sensor (1.8V) and baseband processor I/O (2.5V) in compact camera modules. IC Role / Device Role / Timing Role: Dual synchronous buck regulator providing independently set, tightly regulated outputs with fast transient response. Use Value: 2.25MHz switching enables <3mm-height magnetics; Burst Mode™ extends battery life during preview and standby modes. |
Use Scenario: Primary power delivery for application processor cores (1.2V) and memory interfaces (1.8V) in LTE smartphones. IC Role / Device Role / Timing Role: Dual-channel DC/DC converter delivering stable, low-noise supplies with coordinated soft-start sequencing. Use Value: Independent RUN/SS pins allow staggered power-up; 0.6V reference ensures accurate low-voltage scaling under dynamic load conditions. |
| Wireless Modem Baseband SoC | Industrial Handheld Terminal Logic Rails |
Use Scenario: Powering DSP, RF transceiver bias, and USB PHY in DSL/wireless modems operating across wide ambient temperatures. IC Role / Device Role / Timing Role: Dual buck regulator with –40°C to 125°C rating and integrated MOSFETs for ruggedized embedded deployment. Use Value: 100% duty cycle operation sustains regulation during brown-in events; exposed PGND pad ensures thermal reliability at full load. |
Use Scenario: Generating 3.3V and 1.8V rails for ARM Cortex-M7 MCU, display controller, and secure element in battery-operated handheld terminals. IC Role / Device Role / Timing Role: Dual-output step-down regulator with POR signaling for safe boot sequence and fault monitoring. Use Value: Pulse-skip mode option minimizes output ripple for noise-sensitive analog peripherals; MSOP package fits tight board layouts. |
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 |
|---|---|---|---|
| TPS62125DSCR | Single-output, 3MHz, 300mA; no POR or SYNC; 0.6V ref; 2.7–5.5V input | Not dual-channel; lacks power-good signaling and frequency synchronization | Select only if single-rail supply suffices and system-level reset is handled externally |
| MAX17504ATP+T | Dual-output, 400kHz, 2A/channel; external MOSFETs; 0.6V ref; 4.5–28V input | Higher voltage/current capability; larger solution size; no Burst Mode™ or integrated switches | Choose for higher-power industrial applications where efficiency at medium loads outweighs light-load IQ concerns |
Compared with TPS62125DSCR and MAX17504ATP+T, the LTC3407AIMSE-2#TRPBF uniquely combines dual 800mA outputs, 2.25MHz switching, integrated MOSFETs, Burst Mode™, and POR in a thermally enhanced MSOP-making it optimal for compact, battery-sensitive dual-rail systems requiring guaranteed performance from –40°C to 125°C.
Availability
LTC3407AIMSE-2#TRPBF is available at Aetrix Electronics and suitable for digital camera power management, cellular handset core voltage regulation, and wireless modem baseband SoC supply requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC3407AIMSE-2#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 LTC3407A family was designed specifically for ultra-compact, high-efficiency dual-output power conversion in portable and battery-powered electronics, emphasizing low quiescent current, small magnetics compatibility, and robust thermal performance in miniature packages.
FAQ
What is the maximum output current per channel for the LTC3407AIMSE-2#TRPBF?
The LTC3407AIMSE-2#TRPBF delivers up to 800mA per channel continuously under typical thermal conditions (θJA = 45°C/W, TA ≤ 85°C). Peak switch current limit is specified at 1.0A (min), with derating required above 85°C ambient. The device maintains regulation at 100% duty cycle when input voltage approaches output level.
Does the LTC3407AIMSE-2#TRPBF support external frequency synchronization?
Yes, the LTC3407AIMSE-2#TRPBF supports external synchronization via the MODE/SYNC pin (Pin 6). Applying a 2.25MHz square wave to this pin forces pulse-skip mode and aligns the internal oscillator to the external clock edge, eliminating beat frequencies in multi-regulator systems.
What is the purpose of the exposed pad (Pin 11) on the LTC3407AIMSE-2#TRPBF MSOP package?
The exposed pad (Pin 11) on the LTC3407AIMSE-2#TRPBF is designated PGND and serves as the primary power ground return path and thermal dissipation surface. It must be soldered directly to a large PCB copper pour connected to system ground to ensure proper electrical performance, thermal management, and EMI control.
How does Burst Mode™ operation affect output voltage ripple on the LTC3407AIMSE-2#TRPBF?
In Burst Mode™ operation, the LTC3407AIMSE-2#TRPBF reduces switching activity at light loads to minimize gate charge losses, resulting in higher peak-to-peak output ripple (<35mVPK-PK typical) compared to pulse-skip mode. This trade-off achieves 40μA quiescent current while maintaining regulation accuracy within ±0.5% line/load regulation.
What is the function of the POR pin on the LTC3407AIMSE-2#TRPBF?
The POR (Power-On Reset) pin on the LTC3407AIMSE-2#TRPBF is an open-drain output that pulls low whenever either output voltage deviates by more than ±8.5% from its programmed value. After both channels achieve regulation, POR releases high after 65,536 clock cycles (~29ms in pulse-skip mode), providing a reliable system reset signal.
LTC3407AIMSE-2#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (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):
- 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
LTC3407AIMSE-2#TRPBF FAQ
1.How can I place an order for LTC3407AIMSE-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3407AIMSE-2#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 LTC3407AIMSE-2#TRPBF reliable?
The price and inventory of LTC3407AIMSE-2#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3407AIMSE-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3407AIMSE-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3407AIMSE-2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3407AIMSE-2#TRPBF?
LTC3407AIMSE-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3407AIMSE-2#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 LTC3407AIMSE-2#TRPBF?
For technical support, including LTC3407AIMSE-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3407AIMSE-2#TRPBF requirements.
6.How does Aetrix verify that LTC3407AIMSE-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3407AIMSE-2#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 LTC3407AIMSE-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3407AIMSE-2#TRPBF?
All LTC3407AIMSE-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3407AIMSE-2#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 LTC3407AIMSE-2#TRPBF part is unused and in its original packaging.
Return procedure for LTC3407AIMSE-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3407AIMSE-2#TRPBF 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…
