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Analog Devices Inc. LTC3622IMSE#TRPBF
- Part No.:
- LTC3622IMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC3622IMSE#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 1A DL 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,201
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Product details
Overview
LTC3622IMSE#TRPBF from Analog Devices is a dual-channel, 1A synchronous step-down DC/DC regulator with ultralow 5µA no-load quiescent current (both channels enabled), fixed 1MHz switching frequency, and input voltage range of 2.7V to 17V. It delivers adjustable 0.6V–VIN outputs per channel and supports phase-shifted operation for reduced input ripple-used in battery-powered handheld scanners requiring dual low-noise, high-efficiency power rails.
For engineers reviewing the LTC3622IMSE#TRPBF datasheet, LTC3622IMSE#TRPBF pinout, LTC3622IMSE#TRPBF application, or LTC3622IMSE#TRPBF equivalent, key selection criteria include its dual 1A output capability, ±1% output voltage accuracy, selectable Burst Mode® vs pulse-skipping operation, 16-lead MSOP package with exposed thermal pad, and support for external clock synchronization with ±50% capture range.
Technical Context
The LTC3622IMSE#TRPBF implements a constant-frequency peak-current-mode control architecture with internal compensation, soft-start (500µs), and independent RUN/PGOOD per channel. Its dual regulators share a single INTVCC LDO powered by VIN1 or SVIN (MSOP only), enabling flexible input sourcing.
It features programmable current limit via ILIM pin (full-scale 1.8A or halved), phase selection via PHASE pin (0° or 180°), and MODE/SYNC pin that configures Burst Mode® (for <4µA single-channel IQ) or pulse-skipping (for lower VOUT ripple). Both channels enter dropout at 100% duty cycle with maintained regulation down to VIN ≈ VOUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 17V - supports wide-input industrial and battery systems including 12V rail and Li-ion stacks. |
| Output Voltage Range | 0.6V to VIN - enables generation of sub-1V core supplies and matches input for LDO-like dropout operation. |
| Max Output Current | 1A per channel - sufficient for powering dual-core microcontrollers or FPGA I/O banks. |
| Quiescent Current | 5µA (both channels active) - extends battery life in always-on portable devices like handheld scanners. |
| Switching Frequency | 1MHz (fixed) - balances EMI, inductor size, and efficiency for compact point-of-load designs. |
| Output Accuracy | ±1% over line/load/temp - ensures stable logic supply margins without post-regulation trimming. |
| Synchronization Range | ±50% of 1MHz - allows precise interleaving with system clocks or noise-sensitive timing domains. |
Pinout & Package
Package: 16-lead plastic MSOP with exposed thermal pad (Pin 17 = GND), rated for –40°C to +125°C junction temperature. Exposed pad must be soldered to PCB ground for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1 (Pin 1) | Channel 1 input supply | Powers Channel 1 switch and INTVCC LDO; accepts up to 17V. |
| SVIN (Pin 2) | Signal VIN input | Alternative INTVCC source; connect to higher of VIN1/VIN2 via diode for robust biasing. |
| PGOOD1 (Pin 3) | Channel 1 power-good indicator | Open-drain output asserting high when VOUT1 is within ±7.5% of target for ≥32 cycles. |
| MODE/SYNC (Pin 4) | Mode select & external clock input | Tie to INTVCC for Burst Mode®; tie to GND for pulse-skipping; accept external clock for sync + phase control. |
| PHASE (Pin 5) | Inter-channel phase control | Tie to GND for 0° (in-phase); tie to INTVCC for 180° (anti-phase) or enable edge-based 90° shift with external clock. |
| PGOOD2 (Pin 6) | Channel 2 power-good indicator | Independent open-drain status signal for second output rail. |
| ILIM (Pin 7) | Current limit configuration | GND = full 1.8A limit; INTVCC = 0.9A; 1V = 1.8A on Ch1 / 0.9A on Ch2. |
| VIN2 (Pin 8) | Channel 2 input supply | Independent input-can differ from VIN1 (e.g., separate battery or rail). |
| SW2 (Pin 9) | Channel 2 switch node | Connects to inductor; requires low-inductance layout to minimize EMI and ringing. |
| RUN2 (Pin 10) | Channel 2 enable control | Logic-high activates regulator; must not float-tie to GND or control logic. |
| FB2 (Pin 11) | Channel 2 feedback input | Resistor divider tap sets VOUT2 = 0.6V × (1 + R2/R1); short to VOUT for fixed-output variants. |
| INTVCC (Pin 12) | Internal LDO output | 3.6V ±0.3V supply for gate drivers and logic; bypass with ≥1µF low-ESR capacitor to GND. |
| FB1 (Pin 13) | Channel 1 feedback input | Identical function to FB2; supports independent output programming per channel. |
| RUN1 (Pin 14) | Channel 1 enable control | Independent logic-enable input-enables sequencing or fault isolation between rails. |
| SW1 (Pin 16) | Channel 1 switch node | High-slew-rate node; requires tight loop area with input/output capacitors and inductor. |
| GND (Pin 17) | Power and signal ground | Exposed thermal pad-must be soldered to solid PCB ground plane for θJC = 10°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 1A buck regulators | Enables compact dual-rail power for SoC+FPGA or processor+peripheral subsystems without discrete controllers. |
| Ultralow 5µA no-load IQ (both channels) | Extends runtime in battery-backed applications such as portable medical scanners or IoT edge nodes. |
| Selectably optimized light-load operation | Burst Mode® maximizes efficiency below ~10mA; pulse-skipping minimizes output ripple at same load. |
| 100% duty-cycle dropout operation | Maintains regulation as VIN approaches VOUT-critical for Li-ion discharge down to 3.0V while powering 3.3V rails. |
| Programmable inter-channel phase shift | Reduces input capacitor RMS current by up to 30% in anti-phase mode-lowers heat and size in space-constrained layouts. |
| Integrated soft-start and protection | 500µs per-channel ramp prevents inrush; includes UVLO (2.5V), OVLO (18.5V), and PGOOD monitoring with 32-cycle delay. |
Applications
| Handheld Barcode Scanners | Industrial Portable Test Equipment |
|---|---|
Use Scenario: Battery-powered scanner with CMOS image sensor and ARM Cortex-M MCU requiring clean, sequenced 3.3V and 1.2V rails. IC Role / Device Role / Timing Role: Dual-output step-down regulator providing independent, low-noise power domains with PGOOD sequencing and RUN-controlled startup. Use Value: 5µA quiescent current extends alkaline/Li-ion battery life beyond 12 months in standby; 1MHz switching avoids audible noise in handheld ergonomics. |
Use Scenario: Field-deployable multimeter with isolated analog front-end and wireless BLE module needing stable 5V and 3.3V supplies from 9V battery or USB. IC Role / Device Role / Timing Role: Dual synchronous buck delivering regulated outputs with phase-shifted switching to minimize shared input ripple on compact 4-layer PCB. Use Value: ±1% output accuracy ensures ADC reference stability; 17V max input accommodates unregulated 9V battery sag and USB transients. |
| Point-of-Load Power for Edge AI Modules | Low-Power Industrial Sensors |
Use Scenario: Compact vision processing module with dual-core NPU and MIPI camera interface requiring tightly regulated 0.85V core and 1.8V I/O rails. IC Role / Device Role / Timing Role: Adjustable dual-buck IC generating sub-1V core voltage and higher I/O voltage from single 5V or 12V input rail. Use Value: 0.6V feedback reference enables precise low-VOUT generation; internal compensation eliminates external compensation components. |
Use Scenario: Wireless vibration sensor node powered by coin cell, requiring ultra-low-power 3.3V and 1.8V supplies for MCU and MEMS accelerometer. IC Role / Device Role / Timing Role: High-efficiency dual regulator operating in Burst Mode® to sustain µA-level sleep current while supporting burst-mode wake-up events. Use Value: 4µA IQ (single channel active) enables >5-year battery life; 100% duty cycle operation maintains regulation down to 2.7V input during deep discharge. |
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 |
|---|---|---|---|
| TPS65270PWPR | Fixed 1.2V/3.3V outputs; 2.95–6.5V input; 1.5A per channel; no external sync or phase control. | Targeted at fixed-voltage embedded systems; lacks programmable VOUT and phase shift. | Choose for cost-sensitive, fixed-rail applications where flexibility is secondary to BOM count reduction. |
| MP2491DS-LF-Z | Single 2A output; 4.5–18V input; 0.8–15V adjustable VOUT; no dual-channel or PGOOD per rail. | Requires two ICs to match dual-rail functionality; no independent channel enable or sequencing. | Use only if dual outputs are implemented separately-adds complexity, footprint, and cost versus integrated LTC3622IMSE#TRPBF. |
Compared with TPS65270PWPR and MP2491DS-LF-Z, the LTC3622IMSE#TRPBF uniquely combines dual 1A adjustable outputs, ultralow IQ, external clock synchronization, and programmable phase shift in a single 16-pin MSOP-making it optimal for space- and efficiency-critical portable instrumentation.
Availability
LTC3622IMSE#TRPBF is available at Aetrix Electronics and suitable for battery-powered handheld scanners, industrial portable test equipment, and low-power edge AI modules requiring stable component supply across extended production lifecycles.
Supply support for LTC3622IMSE#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 Maxim Integrated) is a global leader in high-performance analog, mixed-signal, and power management semiconductors.
The LTC3622 product line delivers dual-channel, ultralow-quiescent-current synchronous buck regulators for portable, battery-critical, and high-density power applications-designed to replace discrete multi-IC solutions with monolithic efficiency and precision.
FAQ
What is the maximum input voltage rating for the LTC3622IMSE#TRPBF?
The LTC3622IMSE#TRPBF has an absolute maximum input voltage rating of 17V on VIN1 and VIN2 pins. It also features overvoltage lockout (OVLO) that suspends operation above 18.5V to protect internal MOSFETs-ensuring safe operation even during transient surges. This makes the LTC3622IMSE#TRPBF suitable for 12V automotive or industrial bus inputs with margin.
How does the MODE/SYNC pin affect light-load efficiency and output ripple in the LTC3622IMSE#TRPBF?
The MODE/SYNC pin directly selects between Burst Mode® operation (tied to INTVCC) for ultralow 5µA quiescent current at light loads, and pulse-skipping mode (tied to GND) for minimized output voltage ripple. In Burst Mode®, the LTC3622IMSE#TRPBF cycles fully on/off; in pulse-skipping, it maintains fixed frequency but skips pulses-offering a design trade-off confirmed in the datasheet's efficiency vs. load curves.
Can the LTC3622IMSE#TRPBF operate with only one channel enabled?
Yes-the LTC3622IMSE#TRPBF supports independent channel control via RUN1 and RUN2 pins. When only one channel is active, quiescent current drops to <4µA, verified in Electrical Characteristics tables. This enables dynamic power partitioning in systems where subsystems power up sequentially or intermittently-e.g., enabling sensor rail first, then processor rail on demand.
What is the purpose of the PHASE pin on the LTC3622IMSE#TRPBF, and how does it impact system design?
The PHASE pin configures inter-channel timing: tied low for 0° (in-phase) or high for 180° (anti-phase) operation. Anti-phase reduces input capacitor RMS current and EMI-critical in compact layouts. With external clock applied to MODE/SYNC and PHASE high, the LTC3622IMSE#TRPBF achieves edge-based phase shifting (e.g., 90°), further optimizing ripple cancellation in noise-sensitive applications.
Does the LTC3622IMSE#TRPBF require external compensation components?
No-the LTC3622IMSE#TRPBF features fully internal compensation, eliminating the need for external RC networks typically required in current-mode buck controllers. This simplifies layout, reduces BOM count, and guarantees stability across its full operating range (0.6V–VIN, 2.7V–17V), as validated in the datasheet's typical performance characteristics and application circuits.
LTC3622IMSE#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TFSOP (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):
- 2.7V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 17V
- Current - Output:
- 1A
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LTC3622IMSE#TRPBF FAQ
1.How can I place an order for LTC3622IMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3622IMSE#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 LTC3622IMSE#TRPBF reliable?
The price and inventory of LTC3622IMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3622IMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3622IMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3622IMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3622IMSE#TRPBF?
LTC3622IMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3622IMSE#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 LTC3622IMSE#TRPBF?
For technical support, including LTC3622IMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3622IMSE#TRPBF requirements.
6.How does Aetrix verify that LTC3622IMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3622IMSE#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 LTC3622IMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3622IMSE#TRPBF?
All LTC3622IMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3622IMSE#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 LTC3622IMSE#TRPBF part is unused and in its original packaging.
Return procedure for LTC3622IMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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