My Inquiry
My Account
Analog Devices Inc. LTC3407EMSE-2#TRPBF
- Part No.:
- LTC3407EMSE-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC3407EMSE-2#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 800MA DL 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,022
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3407EMSE-2#TRPBF from Analog Devices is a dual synchronous step-down DC/DC regulator delivering up to 800mA per channel from 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, cellular phones, and PC cards requiring compact, high-efficiency dual-rail power.
For engineers reviewing the LTC3407EMSE-2#TRPBF datasheet, LTC3407EMSE-2#TRPBF pinout, LTC3407EMSE-2#TRPBF application, or LTC3407EMSE-2#TRPBF equivalent, key selection criteria include its 2.25MHz constant-frequency operation, 40µA quiescent current in active mode, Burst Mode® vs pulse-skipping trade-off, 100% duty-cycle dropout capability, and MSOP-10 thermal performance (θJA = 45°C/W).
Technical Context
The LTC3407EMSE-2#TRPBF employs a current-mode control architecture with shared 2.25MHz oscillator across both channels, enabling in-phase switching and precise load transient response. Each channel integrates matched P-channel high-side and N-channel synchronous rectifier switches, eliminating external Schottky diodes while supporting continuous conduction and 100% duty-cycle dropout.
Its dual independent RUN pins (RUN1/RUN2) allow independent enable/disable control, while the MODE/SYNC pin selects between Burst Mode® (for ≤40µA quiescent current at light loads) and pulse-skipping mode (for <10mVPP output ripple). The POR pin provides open-drain power-on reset with ±8.5% output voltage monitoring and 117ms delay after regulation is achieved.
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 system rails without external LDO pre-regulation. |
| Switching Frequency | 2.25MHz (typ) - enables use of 2.2µH inductors and 10µF ceramic capacitors with ≤1.2mm profile. |
| Output Current per Channel | 800mA - sufficient for core logic, memory I/O, and RF subsystems in handheld devices. |
| Feedback Reference Voltage | 0.6V (±2%) - sets output voltage via external resistor divider; enables 0.6V–5V adjustment with <0.5% load regulation error. |
| Quiescent Current | 40µA (typ) - maintains high efficiency down to µA-level loads in Burst Mode®, extending battery runtime. |
| Shutdown Current | <1µA - minimizes battery drain during system sleep or standby states. |
| Peak Switch Current Limit | 1.2A (typ) - provides robust short-circuit protection while supporting peak transient loads beyond steady-state rating. |
| Thermal Resistance | θJA = 45°C/W - validated for MSOP-10 package; enables 800mA operation at TA ≤ 85°C with minimal PCB copper area. |
Pinout & Package
Package: 10-Lead Plastic MSOP (MSE), 3mm × 3mm footprint, exposed pad (Pin 11) connected to PGND for thermal and electrical integrity. RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VFB1 (Pin 1) | Channel 1 feedback input | Connects to resistive divider output; regulates VOUT1 to 0.6V reference - determines output voltage accuracy and loop stability. |
| RUN1 (Pin 2) | Channel 1 enable control | High = enabled; low = shutdown - allows independent sequencing and power gating of first output rail. |
| VIN (Pin 3) | Main power input | Supplies both regulators; requires local 10µF ceramic decoupling to minimize high-frequency noise injection. |
| SW1 (Pin 4) | Channel 1 switch node | Connects to inductor; swings from VIN to GND - critical for EMI layout; must be routed short and away from sensitive analog traces. |
| GND (Pin 5) | Analog ground reference | Not internally connected; serves as shield and reference plane tie point - must connect to solid PCB ground plane. |
| MODE/SYNC (Pin 6) | Mode selection & sync input | VIN = Burst Mode®; GND = pulse-skipping; external clock = forced pulse-skipping sync - configures noise/efficiency trade-off and enables multi-regulator synchronization. |
| SW2 (Pin 7) | Channel 2 switch node | Identical function to SW1; shares same clock phase - requires symmetric layout to minimize crosstalk between channels. |
| POR (Pin 8) | Power-on reset output | Open-drain; pulled low if either VOUT deviates >±8.5% - used to hold microcontroller in reset until both rails stabilize. |
| RUN2 (Pin 9) | Channel 2 enable control | Independent enable for second rail - supports staggered startup, fault isolation, and dynamic power management. |
| VFB2 (Pin 10) | Channel 2 feedback input | Same function as VFB1; enables independent output voltage setting - allows dual-rail systems (e.g., 1.8V + 2.5V) with single IC. |
| PGND (Pin 11) | Power ground (exposed pad) | Mandatory connection to PCB ground plane - primary thermal path and return for high-current switch loops; improves efficiency and EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous dual-channel architecture | Eliminates external Schottky diodes, reduces conduction loss, and enables >95% peak efficiency at 800mA per channel. |
| Burst Mode® operation | Reduces quiescent current to 40µA while maintaining regulation - extends battery life in always-on portable applications. |
| 100% duty-cycle dropout | Enables VOUT ≈ VIN − ILOAD×RDS(ON) operation - supports brownout conditions without rail collapse in battery-powered systems. |
| Externally synchronizable oscillator | Allows alignment of switching edges across multiple converters to suppress beat frequencies and simplify EMI filtering. |
| Power-on reset with timeout | Provides system-level reset assertion until both outputs settle within ±8.5%, then releases after 117ms - ensures reliable processor boot. |
| AEC-Q100 qualified variants available | Automotive-grade versions (e.g., LTC3407EMSE-2#WPBF) meet stress testing requirements for under-hood and infotainment use. |
Applications
| Mobile Baseband Power | Dual-Rail FPGA Core/IO Supply |
|---|---|
Use Scenario: Powering baseband processor cores and peripherals in cellular handsets with tight board space and battery life constraints. IC Role / Device Role / Timing Role: Dual-channel buck regulator providing independent 1.2V core and 2.8V RF interface rails from single Li-ion cell. Use Value: 2.25MHz operation allows ultra-compact 2.2µH/10µF filter components; Burst Mode® extends talk time by minimizing idle current draw. | Use Scenario: Delivering tightly regulated 1.0V FPGA core and 3.3V I/O supplies in portable test equipment with strict thermal limits. IC Role / Device Role / Timing Role: Synchronized dual-buck controller ensuring simultaneous, ripple-free power-up of FPGA domains with coordinated reset signaling. Use Value: Shared 2.25MHz clock eliminates beat frequencies; POR output guarantees FPGA configuration only after both rails are stable. |
| PC Card Interface Power | Digital Camera Sensor & ISP Supply |
Use Scenario: Generating 3.3V and 1.8V rails for PCMCIA/CardBus host controllers in industrial PDAs. IC Role / Device Role / Timing Role: Dual-output regulator with independent RUN pins enabling hot-plug detection and sequenced card power enable. Use Value: Low 40µA quiescent current preserves host battery during card insertion/removal; MSOP-10 fits narrow card-edge PCBs. | Use Scenario: Supplying image sensor analog bias (2.8V) and digital ISP core (1.2V) in compact digital cameras with burst capture modes. IC Role / Device Role / Timing Role: High-efficiency dual buck delivering clean, low-noise power with pulse-skipping mode selected during video recording. Use Value: Pulse-skipping mode reduces output ripple to <10mVPP, preventing noise coupling into analog sensor signals and color artifacts. |
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 |
|---|---|---|---|
| TPS62125DSGR | Single-channel, 3MHz, 300mA output; no POR or MODE pin; lower IQ (18µA) but no dual-rail integration. | Requires two ICs for dual-rail; lacks power-good coordination and independent enable control. | Select when board space permits discrete solutions and ultra-low IQ dominates over integration. |
| RT8059NGQW | Dual-channel, 1.5MHz, 600mA/channel; integrated soft-start; no external sync; higher RDS(ON) (0.5Ω). | Lower switching frequency increases inductor size; no Burst Mode® - less efficient below 10mA load. | Select when cost sensitivity outweighs size/efficiency needs and 1.5MHz operation suffices for layout constraints. |
Compared with TPS62125DSGR and RT8059NGQW, the LTC3407EMSE-2#TRPBF uniquely delivers dual 800mA channels in one MSOP-10 package with programmable noise/efficiency mode, POR coordination, and 2.25MHz operation - making it optimal for space-constrained, battery-powered dual-rail systems where timing control and thermal performance are critical.
Availability
LTC3407EMSE-2#TRPBF is available at Aetrix Electronics and suitable for mobile baseband power, dual-rail FPGA supply, PC Card interface, and digital camera sensor applications requiring stable component supply, long-term production continuity, and automotive-qualified alternatives.
Supply support for LTC3407EMSE-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 (now part of Analog Devices, Inc., following merger with Linear Technology) designs precision analog, mixed-signal, and power management ICs for high-reliability industrial, automotive, and communications systems.
The LTC3407 family targets portable and battery-powered applications demanding high efficiency, small solution size, and flexible power sequencing - with the LTC3407EMSE-2#TRPBF optimized for commercial-temperature dual-rail DC/DC conversion in space-constrained designs.
FAQ
What is the maximum output current per channel for the LTC3407EMSE-2#TRPBF?
The LTC3407EMSE-2#TRPBF delivers up to 800mA per channel continuously under typical thermal conditions (TA ≤ 85°C, θJA = 45°C/W, adequate PCB copper). Peak switch current limit is 1.2A, supporting transient loads. Derating is required above 85°C ambient or with limited copper area - consult thermal calculations using PD = (IOUT² × RDS(ON)) + (IOUT × VOUT × (1 – VOUT/VIN)) for accurate junction temperature estimation.
How does the MODE/SYNC pin affect LTC3407EMSE-2#TRPBF operation?
The MODE/SYNC pin on the LTC3407EMSE-2#TRPBF selects between Burst Mode® (pin tied to VIN) for lowest quiescent current (~40µA) or pulse-skipping mode (pin tied to GND) for lowest output ripple (<10mVPP). When driven by an external clock, it forces pulse-skipping mode and synchronizes switching edges - enabling deterministic EMI reduction in multi-converter systems. Floating this pin is not allowed.
Can LTC3407EMSE-2#TRPBF operate with input voltage below 2.5V?
No - the LTC3407EMSE-2#TRPBF has a specified minimum input voltage of 2.5V per Absolute Maximum Ratings and Electrical Characteristics tables. Operation below 2.5V risks undervoltage lockout activation or unstable regulation. For sub-2.5V inputs, consider alternative regulators such as the LTC3522 (1.8V–5.5V input) or evaluate whether the application can tolerate dropout behavior only near VOUT.
What is the purpose of the POR pin on LTC3407EMSE-2#TRPBF?
The POR (Power-On Reset) pin on the LTC3407EMSE-2#TRPBF is an open-drain output that remains low while either output voltage deviates by more than ±8.5% from its target, then transitions high after ~117ms (262,144 clock cycles) once both channels achieve regulation. It provides system-level reset signaling to microcontrollers or FPGAs, ensuring safe initialization only after stable dual-rail power is confirmed.
Does LTC3407EMSE-2#TRPBF require external compensation components?
No - the LTC3407EMSE-2#TRPBF features an internally compensated current-mode control loop. No external compensation network (e.g., Type II/III compensator) is needed. Stability is ensured across the full output voltage range (0.6V–5V) and load conditions when using recommended external components (e.g., 2.2µH inductor, 10µF ceramic output capacitors) per the datasheet's Figure 2 schematic.
LTC3407EMSE-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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP-EP
LTC3407EMSE-2#TRPBF FAQ
1.How can I place an order for LTC3407EMSE-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3407EMSE-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 LTC3407EMSE-2#TRPBF reliable?
The price and inventory of LTC3407EMSE-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 LTC3407EMSE-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3407EMSE-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3407EMSE-2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3407EMSE-2#TRPBF?
LTC3407EMSE-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3407EMSE-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 LTC3407EMSE-2#TRPBF?
For technical support, including LTC3407EMSE-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3407EMSE-2#TRPBF requirements.
6.How does Aetrix verify that LTC3407EMSE-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3407EMSE-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 LTC3407EMSE-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3407EMSE-2#TRPBF?
All LTC3407EMSE-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3407EMSE-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 LTC3407EMSE-2#TRPBF part is unused and in its original packaging.
Return procedure for LTC3407EMSE-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3407EMSE-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…
