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Analog Devices Inc. LTC3419EMS-1#TRPBF
- Part No.:
- LTC3419EMS-1#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC3419EMS-1#TRPBF.pdf
- Description:
- IC REG BCK 1.575V/1.8V DL 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,623
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Product details
Overview
LTC3419EMS-1#TRPBF from Analog Devices (formerly Linear Technology) is a dual-channel, 2.25MHz synchronous step-down DC/DC regulator in a 10-lead MSOP package, delivering up to 600mA per channel with 0.6V feedback reference and 2.5V–5.5V input range. It supports independent enable control (RUN1/RUN2), user-selectable Burst Mode® or pulse-skipping operation, and operates down to <1μA shutdown current - ideal for Li-ion–powered portable media players and DSL modems.
For engineers reviewing the LTC3419EMS-1#TRPBF datasheet, LTC3419EMS-1#TRPBF pinout, LTC3419EMS-1#TRPBF application, or LTC3419EMS-1#TRPBF equivalent, key selection criteria include fixed dual-output voltages (1.575V/1.8V), 96% peak efficiency at 600mA, 35μA operating quiescent current, and internal compensation for ceramic output capacitors.
Technical Context
The LTC3419EMS-1#TRPBF implements constant-frequency current-mode control with synchronized dual channels sharing a 2.25MHz oscillator. Each channel features independent soft-start, short-circuit protection via extended bottom-switch conduction, and dropout operation enabled by 100% duty cycle capability.
Its architecture integrates P-channel high-side and N-channel low-side MOSFETs with typical RDS(ON) of 0.4Ω (top) and 0.4Ω (bottom) at 3.6V, and uses an internal 0.6V reference to support low-voltage outputs without external resistors - confirmed for the -1 variant's factory-set 1.575V/1.8V outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - compatible with single-cell Li-ion and USB 5V supplies. |
| Output Voltage (Ch1/Ch2) | 1.575V / 1.8V - factory-trimmed fixed outputs; no external feedback resistors required. |
| Max Output Current | 600mA per channel - sustained delivery under thermal limits with MSOP package. |
| Switching Frequency | 2.25MHz (typ) - enables use of sub-4.7μH inductors and compact 0603/0805 ceramics. |
| Quiescent Current | 35μA (both channels active) - extends battery runtime in always-on subsystems. |
| Shutdown Current | <1μA - meets ultra-low-power sleep requirements for portable devices. |
| Feedback Reference | 0.6V - allows precise low-VOUT regulation; ±1.5% tolerance over –40°C to 125°C. |
| Operating Temp Range | –40°C to 125°C - qualified for industrial and automotive cabin-adjacent applications. |
Pinout & Package
Package: 10-lead plastic MSOP (3mm × 3mm footprint, 1.1mm max height), exposed pad soldered to PCB ground for thermal performance. Pin 5 (GND) and exposed pad are both functional ground terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VFB1 (Pin 1) | Channel 1 feedback input | Internally regulated to 0.6V; tied directly to VOUT1 in -1 fixed-output version. |
| RUN1 (Pin 2) | Channel 1 enable control | High = enable (≥1.2V); low = shutdown (<0.4V); leakage <1μA. |
| MODE (Pin 3) | Light-load mode select | GND = Burst Mode®; VIN = pulse-skipping; floating prohibited. |
| SW1 (Pin 4) | Channel 1 switch node | Connects to inductor; swings between VIN and GND; requires local ceramic decoupling. |
| GND (Pin 5) | Power ground | Main return path for input/output capacitors and IC substrate; must be low-impedance. |
| VFB2 (Pin 6) | Channel 2 feedback input | Internally regulated to 0.6V; tied directly to VOUT2 in -1 fixed-output version. |
| RUN2 (Pin 7) | Channel 2 enable control | Independent enable logic identical to RUN1; supports staggered power sequencing. |
| SW2 (Pin 8) | Channel 2 switch node | Independent switching path; layout symmetry recommended vs SW1. |
| VIN (Pin 9) | Main power input | Supplies both regulators; requires ≥10μF ceramic input capacitance near pin. |
| GND (Pin 10) | Secondary ground terminal | Shared with exposed pad; connects to same ground plane as Pin 5 for thermal integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed outputs (1.575V/1.8V) | Eliminates external resistor dividers and associated layout area, BOM count, and trimming error. |
| Internal compensation | Enables stable operation with all-ceramic output capacitors (no ESR dependency), reducing board space and cost. |
| Independent soft-start | 750μs ramp per channel prevents input inrush and avoids cross-regulator interaction during power-up. |
| Burst Mode® operation | Maintains >85% efficiency down to 100μA load per channel while minimizing light-load quiescent loss. |
| 100% duty cycle capability | Supports low-dropout operation (e.g., 1.8VOUT from 2.0VIN) without external diode or controller modification. |
| Short-circuit protection | Prevents inductor saturation and thermal runaway by extending bottom-FET conduction during overload. |
Applications
| Portable Media Players | Digital Still Cameras |
|---|---|
Use Scenario: Dual-rail power for image sensor (1.8V) and baseband processor (1.575V) in battery-operated DSCs. IC Role / Device Role / Timing Role: Primary dual-output buck regulator supplying core logic and analog front-end rails. Use Value: 35μA quiescent current preserves standby time; Burst Mode® sustains >87% efficiency at 50μA camera preview load. |
Use Scenario: Power management for CMOS image sensor and ISP in compact point-and-shoot cameras. IC Role / Device Role / Timing Role: Synchronous dual-buck converter delivering tightly regulated, low-noise 1.575V/1.8V rails. Use Value: 2.25MHz switching minimizes EMI near sensitive analog imaging circuits; internal soft-start prevents sensor reset glitches. |
| Wireless Modems | Cellular Telephones |
Use Scenario: Baseband and RF transceiver power in LTE/5G USB dongles with tight thermal constraints. IC Role / Device Role / Timing Role: Dual-channel DC/DC providing isolated, sequenced power domains for modem SoC and PA bias. Use Value: Independent RUN1/RUN2 pins enable dynamic rail shutdown during idle states, cutting system standby power by >40%. |
Use Scenario: Application processor and memory I/O supply in feature phones with Li-ion battery input. IC Role / Device Role / Timing Role: Compact dual-buck regulator supporting 1.575V core and 1.8V I/O voltage domains. Use Value: 100% duty cycle extends usable battery range down to 2.2V input; MSOP package fits narrow PCB margins. |
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 |
|---|---|---|---|
| TPS62150ARGTR | Single-channel 600mA buck; 2.5–6V input; adjustable output only; 2.25MHz switching. | Requires two separate ICs for dual-rail designs; lacks independent enable and fixed-output variants. | Choose when only one regulated rail is needed or when adjustable output flexibility outweighs integration. |
| RTQ2132BGQW | Dual 600mA buck; 2.7–5.5V input; fixed 1.2V/1.8V outputs; 2.1MHz switching; 25μA IQ. | Fixed outputs differ (1.2V/1.8V vs 1.575V/1.8V); lower quiescent current but no Burst Mode®. | Choose for lower IQ and tighter 1.2V core rail; verify 1.575V tolerance margin for target SoC. |
Compared with TPS62150ARGTR and RTQ2132BGQW, the LTC3419EMS-1#TRPBF uniquely combines factory-trimmed 1.575V/1.8V outputs, Burst Mode® for sub-mA efficiency, and independent RUN control - making it optimal for space-constrained, multi-rail portable systems requiring precise voltage matching and ultra-low standby loss.
Availability
LTC3419EMS-1#TRPBF is available at Aetrix Electronics and suitable for portable media players, digital still cameras, wireless modems, cellular telephones, and PDAs requiring stable component supply across industrial temperature grades.
Supply support for LTC3419EMS-1#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 acquired Linear Technology in 2017 and maintains its precision power management portfolio, emphasizing high-efficiency, low-noise, and thermally robust DC/DC solutions for portable and industrial markets.
The LTC3419 product line delivers compact dual-output synchronous buck regulation targeting battery-powered consumer electronics where size, efficiency, and fixed-voltage simplicity are critical design constraints.
FAQ
What output voltages does the LTC3419EMS-1#TRPBF provide?
The LTC3419EMS-1#TRPBF provides factory-set fixed outputs of 1.575V on Channel 1 and 1.8V on Channel 2. These values are trimmed during production and do not require external feedback resistors - unlike the base LTC3419, which is adjustable. The 1.575V rail matches common microprocessor core voltages, while the 1.8V rail supports I/O and memory interfaces.
Does the LTC3419EMS-1#TRPBF require external compensation components?
No, the LTC3419EMS-1#TRPBF is internally compensated and designed to operate stably with all-ceramic output capacitors. This eliminates the need for external compensation networks (e.g., RC filters on VFB), simplifies layout, reduces BOM count, and ensures consistent loop stability across manufacturing lots and temperature ranges.
How does Burst Mode® operation improve light-load efficiency in the LTC3419EMS-1#TRPBF?
In Burst Mode®, the LTC3419EMS-1#TRPBF reduces switching activity during light loads by entering periodic sleep intervals, waking only to deliver energy bursts that maintain output regulation. This cuts gate-drive and switching losses, sustaining >85% efficiency at 100μA per channel - significantly outperforming pulse-skipping mode below 1mA.
Can the LTC3419EMS-1#TRPBF operate with a 2.5V input supply?
Yes, the LTC3419EMS-1#TRPBF supports inputs as low as 2.5V. At this voltage, it maintains regulation for both outputs (1.575V and 1.8V) using 100% duty cycle operation on the higher rail, enabling extended battery life in single-cell Li-ion systems down to end-of-discharge voltage.
What is the thermal performance of the LTC3419EMS-1#TRPBF in MSOP package?
The LTC3419EMS-1#TRPBF in MSOP package has θJA = 120°C/W. With proper PCB layout - including soldering the exposed pad to a ≥100mm² copper pour - it delivers full 600mA per channel at ambient temperatures up to 85°C. Derating is required above 85°C ambient or with limited copper area.
LTC3419EMS-1#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.575V, 1.8V
- Voltage - Output (Max):
- -
- 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:
- 10-MSOP
LTC3419EMS-1#TRPBF FAQ
1.How can I place an order for LTC3419EMS-1#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3419EMS-1#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 LTC3419EMS-1#TRPBF reliable?
The price and inventory of LTC3419EMS-1#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3419EMS-1#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3419EMS-1#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3419EMS-1#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3419EMS-1#TRPBF?
LTC3419EMS-1#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3419EMS-1#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 LTC3419EMS-1#TRPBF?
For technical support, including LTC3419EMS-1#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3419EMS-1#TRPBF requirements.
6.How does Aetrix verify that LTC3419EMS-1#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3419EMS-1#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 LTC3419EMS-1#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3419EMS-1#TRPBF?
All LTC3419EMS-1#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3419EMS-1#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 LTC3419EMS-1#TRPBF part is unused and in its original packaging.
Return procedure for LTC3419EMS-1#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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