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Analog Devices Inc. LTC3622HMSE#TRPBF
- Part No.:
- LTC3622HMSE#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC3622HMSE#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 1A DL 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,236
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Product details
Overview
LTC3622HMSE#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 high light-load efficiency and compact dual-rail power.
For engineers reviewing the LTC3622HMSE#TRPBF datasheet, LTC3622HMSE#TRPBF pinout, LTC3622HMSE#TRPBF application, or LTC3622HMSE#TRPBF equivalent, key selection criteria include its 16-lead MSOP package with exposed thermal pad, ±1% output voltage accuracy, selectable Burst Mode® vs pulse-skipping operation, and dual-channel synchronization capability with external clock.
Technical Context
The LTC3622HMSE#TRPBF implements a constant-frequency, peak-current-mode control architecture with internal compensation and soft-start. Each channel features independent RUN control, PGOOD monitoring, and programmable current limit via ILIM pin.
It supports three operating modes: Burst Mode® (for <4µA single-channel IQ), pulse-skipping (for low output ripple), and synchronized external clock mode (±50% capture range). Phase shift between channels is configurable via PHASE pin (0° or 180°) or dynamically controlled using external clock edge modulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 17V - supports wide-input industrial and battery-supplied systems including Li-ion (3.0–4.2V) and 12V rail inputs. |
| Output Voltage Range | 0.6V to VIN - enables generation of sub-1V core supplies and matches input rail for 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, no load) - extends battery life in always-on portable devices. |
| Switching Frequency | 1MHz (fixed) - allows use of small 3.3–4.7µH inductors and fits within EMI-sensitive bands. |
| Output Accuracy | ±1% over temperature - ensures stable reference for precision analog circuitry. |
| Package | 16-lead MSOP with exposed thermal pad - provides 10°C/W θJC for reliable thermal performance at full load. |
Pinout & Package
Package: 16-Lead Plastic MSOP (MSE), 4mm × 3mm, exposed pad (Pin 17) connected to GND for thermal and electrical integrity. Operating junction temperature range: –40°C to +150°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1 (Pin 1) | Channel 1 input supply | Powers Channel 1 switch and INTVCC LDO; must be ≥2.7V and ≤17V. |
| SVIN (Pin 2) | Signal VIN input | Supplies INTVCC independently; tie to higher of VIN1/VIN2 or use diode-OR configuration. |
| PGOOD1 (Pin 3) | Channel 1 power-good indicator | Open-drain output asserting high when VOUT1 is within ±7.5% regulation window. |
| MODE/SYNC (Pin 4) | Mode select & external clock input | Tie to INTVCC for Burst Mode®, GND for pulse-skipping, or apply external clock for synchronization. |
| PHASE (Pin 5) | Channel phase control | Low = 0° in-phase; high = 180° anti-phase; with external clock, enables dynamic phase shift. |
| PGOOD2 (Pin 6) | Channel 2 power-good indicator | Independent open-drain status signal for VOUT2 regulation. |
| ILIM (Pin 7) | Current limit configuration | GND = full 1.8A limit; INTVCC = halved 0.9A; 1V bias sets asymmetric limits (1.8A/0.9A). |
| VIN2 (Pin 8) | Channel 2 input supply | Independent input rail - may differ from VIN1 (e.g., separate battery or supply domain). |
| SW2 (Pin 9) | Channel 2 switch node | Connects to inductor and low-side NMOS drain; requires tight layout to minimize EMI. |
| RUN2 (Pin 10) | Channel 2 enable control | Logic-high enables Channel 2; floating not allowed - must be pulled high or low. |
| FB2 (Pin 11) | Channel 2 feedback input | Senses output divider ratio; connect directly to VOUT for fixed-output variants. |
| INTVCC (Pin 12) | Internal LDO output | 3.6V regulated supply for gate drivers and logic; bypass with ≥1µF low-ESR capacitor. |
| FB1 (Pin 13) | Channel 1 feedback input | Same function as FB2; supports independent output programming per channel. |
| RUN1 (Pin 14) | Channel 1 enable control | Independent logic-level enable; allows staggered startup or power sequencing. |
| SW1 (Pin 16) | Channel 1 switch node | High dv/dt node - requires short, low-inductance path to inductor and input cap. |
| GND (Pin 17) | Power and signal ground | Exposed thermal pad - must be soldered to PCB ground plane for thermal and electrical performance. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 1A synchronous buck topology | Integrates high- and low-side MOSFETs per channel - eliminates external FETs and reduces BOM count. |
| Ultralow 5µA quiescent current | Enables >1-year battery life in always-on IoT sensors powered by coin cells or Li-SOCl₂ batteries. |
| Selectably optimized light-load behavior | Burst Mode® maximizes efficiency at µA loads; pulse-skipping minimizes output ripple for noise-sensitive ADCs. |
| Programmable inter-channel phase shift | Reduces input capacitor RMS current by up to 30% in anti-phase mode - lowers required CIN size and cost. |
| Integrated soft-start and compensation | 500µs per-channel soft-start prevents inrush; eliminates need for external compensation components. |
| Robust protection suite | Includes VIN overvoltage lockout (18.5V), undervoltage lockout (2.5V), and cycle-by-cycle current limiting. |
Applications
| Battery-Powered Handheld Scanners | Industrial Point-of-Load Supplies |
|---|---|
Use Scenario: Portable barcode scanner with dual-core MCU and CMOS image sensor requiring 1.2V core and 3.3V I/O rails from single Li-ion cell. IC Role / Device Role / Timing Role: Dual-channel step-down regulator providing independent, sequenced, and phase-controlled power rails with minimal standby drain. Use Value: 5µA no-load IQ extends operational time between charges; 1MHz switching enables compact 3.3µH inductors and low-profile design. |
Use Scenario: Programmable logic controller (PLC) module needing isolated 5V and 3.3V supplies from 24V field bus input. IC Role / Device Role / Timing Role: High-efficiency dual buck converter delivering tightly regulated outputs with thermal robustness up to +150°C junction. Use Value: 16-lead MSOP package with exposed pad sustains 1A/channel at full load in convection-cooled enclosures; ±1% accuracy ensures reliable digital interface timing. |
| Portable Medical Diagnostic Devices | Automotive Infotainment Subsystems |
Use Scenario: Handheld ultrasound probe with analog front-end (AFE) and ARM Cortex-M7 processor requiring clean, low-noise 1.8V and 2.5V supplies. IC Role / Device Role / Timing Role: Dual-output regulator supporting pulse-skipping mode on AFE rail and Burst Mode® on processor rail for adaptive efficiency. Use Value: Independent RUN pins allow dynamic power gating; PGOOD signals feed system health monitoring firmware. |
Use Scenario: In-dash display unit drawing power from 12V automotive battery with transient spikes up to 18V. IC Role / Device Role / Timing Role: Input-tolerant dual buck IC with built-in 18.5V overvoltage protection and 100% duty-cycle dropout operation. Use Value: Survives load-dump events without latch-off; maintains regulation down to 2.7V input during cranking. |
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 |
|---|---|---|---|
| TPS65270PWPR | 2.2MHz fixed frequency, 3A per channel, 2.95–18V input, no Burst Mode®, higher IQ (25µA) | Higher current, faster switching - suited for higher-power DSPs but less optimal for ultra-low-power battery use. | Choose TPS65270PWPR when >1A per rail or tighter EMI filtering at 2.2MHz is required; avoid if <10µA standby is critical. |
| MAX20075ATPA/VY+ | 2.2MHz, 2.5A per channel, 3.5–36V input, integrated spread-spectrum, AEC-Q100 qualified | Automotive-grade with extended input range and EMI reduction - lacks ultralow IQ and phase-shift flexibility. | Choose MAX20075ATPA/VY+ for automotive infotainment where qualification and 36V tolerance outweigh IQ and phase control needs. |
Compared with TPS65270PWPR and MAX20075ATPA/VY+, the LTC3622HMSE#TRPBF uniquely combines ultralow 5µA quiescent current, user-selectable light-load modes, and programmable inter-channel phase shift - making it optimal for space-constrained, battery-critical portable electronics where efficiency at µA loads and input ripple reduction are design priorities.
Availability
LTC3622HMSE#TRPBF is available at Aetrix Electronics and suitable for battery-powered handheld scanners, industrial point-of-load supplies, and portable medical diagnostic devices requiring stable component supply across extended temperature ranges.
Supply support for LTC3622HMSE#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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC3622HMSE#TRPBF belongs to Analog Devices' Power by Linear™ family of high-efficiency DC/DC regulators designed specifically for space- and power-constrained portable and battery-operated systems demanding ultralow quiescent current and dual-rail flexibility.
FAQ
What is the maximum input voltage rating for the LTC3622HMSE#TRPBF?
The LTC3622HMSE#TRPBF has an absolute maximum input voltage rating of 17V on VIN1 and VIN2 pins. Its overvoltage lockout triggers at 18.5V to protect internal MOSFETs, and normal operation resumes once input drops below 18.2V. This makes the LTC3622HMSE#TRPBF suitable for 12V automotive or industrial systems with transient spikes, provided external clamping is used beyond 18.5V.
Does the LTC3622HMSE#TRPBF support fixed-output voltage configurations?
No - the LTC3622HMSE#TRPBF is the adjustable-output variant (LTC3622, not LTC3622-23/5). It requires external resistor dividers on FB1 and FB2 to set outputs from 0.6V to VIN. Fixed 3.3V/5V versions exist under different part numbers (e.g., LTC3622-23/5), but the LTC3622HMSE#TRPBF itself does not integrate internal feedback resistors.
How does the PHASE pin affect operation of the LTC3622HMSE#TRPBF?
The PHASE pin on the LTC3622HMSE#TRPBF selects inter-channel timing: grounded = 0° (in-phase switching), tied to INTVCC = 180° (anti-phase). When used with an external clock on MODE/SYNC, PHASE = INTVCC enables dynamic phase shift controlled by clock duty cycle - allowing precise edge separation to minimize crosstalk and input ripple in sensitive layouts.
What is the thermal performance of the LTC3622HMSE#TRPBF in its MSOP package?
The LTC3622HMSE#TRPBF in the 16-lead MSOP package has θJC = 10°C/W and θJA = 40°C/W. With the exposed pad properly soldered to a 2-layer PCB thermal pad (≥1 cm² copper), it sustains 1A per channel continuously at +85°C ambient. Derating is recommended above +100°C ambient to maintain ≤150°C junction temperature.
Can the LTC3622HMSE#TRPBF operate in 100% duty cycle dropout mode?
Yes - the LTC3622HMSE#TRPBF supports 100% duty cycle operation when VIN approaches VOUT, maintaining regulation with minimal dropout voltage. During dropout, it transitions between active and sleep modes to sustain ultralow quiescent current, enabling continued operation even as input voltage decays - critical for battery end-of-life runtime extension.
LTC3622HMSE#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 ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LTC3622HMSE#TRPBF FAQ
1.How can I place an order for LTC3622HMSE#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3622HMSE#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 LTC3622HMSE#TRPBF reliable?
The price and inventory of LTC3622HMSE#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3622HMSE#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3622HMSE#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3622HMSE#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3622HMSE#TRPBF?
LTC3622HMSE#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3622HMSE#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 LTC3622HMSE#TRPBF?
For technical support, including LTC3622HMSE#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3622HMSE#TRPBF requirements.
6.How does Aetrix verify that LTC3622HMSE#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3622HMSE#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 LTC3622HMSE#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3622HMSE#TRPBF?
All LTC3622HMSE#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3622HMSE#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 LTC3622HMSE#TRPBF part is unused and in its original packaging.
Return procedure for LTC3622HMSE#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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