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Analog Devices Inc. LTC3622EMSE-2#TRPBF
- Part No.:
- LTC3622EMSE-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC3622EMSE-2#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 1A DL 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,684
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Product details
Overview
LTC3622EMSE-2#TRPBF from Analog Devices is a dual-channel, 1A synchronous step-down regulator with 2.25MHz fixed switching frequency, ultralow 5µA no-load quiescent current (both channels enabled), 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 - deployed in battery-powered handheld scanners and portable point-of-load systems.
For engineers reviewing the LTC3622EMSE-2#TRPBF datasheet, LTC3622EMSE-2#TRPBF pinout, LTC3622EMSE-2#TRPBF application, or LTC3622EMSE-2#TRPBF equivalent, key selection criteria include its dual 1A output capability, 2.25MHz synchronization tolerance (±50%), selectable Burst Mode® vs pulse-skipping operation, ±1% output voltage accuracy, and MSOP-16 package compatibility with thermal pad grounding requirements.
Technical Context
The LTC3622EMSE-2#TRPBF implements a constant-frequency peak-current-mode control architecture with internal compensation, enabling stable regulation across wide load and line variations. Each channel features independent RUN control, PGOOD monitoring, and programmable current limit via ILIM pin - supporting asymmetric load configurations and fault-aware power sequencing.
Its 2.25MHz oscillator allows compact external components (e.g., ≤4.7µH inductors) and enables out-of-phase operation via PHASE pin or external clock edge modulation on MODE/SYNC. The INTVCC LDO powers internal circuitry from VIN1 or SVIN (MSOP only), while integrated overvoltage lockout (18.5V) and undervoltage lockout (2.5V) protect against supply transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 2.25MHz fixed, synchronizable ±50% to external clock - enables small magnetics and EMI filtering above 10MHz band |
| Input Voltage Range | 2.7V to 17V - supports single-cell Li-ion up to 12V industrial rails without pre-regulation |
| Output Voltage Range | 0.6V to VIN per channel - enables direct 1.8V/2.5V/3.3V/5V generation from common input sources |
| No-Load Quiescent Current | 5µA with both channels enabled - extends battery life in always-on sensor nodes and standby modes |
| Output Accuracy | ±1% over temperature and line - ensures reliable logic-level compliance for FPGA I/O, microcontroller cores, and ADC references |
| Peak Output Current | 1A per channel - sustains full load under 100% duty cycle dropout conditions down to VOUT + 0.3V |
| Package | 16-Lead MSOP with exposed thermal pad - provides θJC = 10°C/W for high-power density thermal management |
Pinout & Package
Package: 16-Lead Plastic MSOP (4mm × 3mm) with exposed GND pad (Pin 17), rated for –40°C to 125°C operating junction temperature. Exposed pad must be soldered to PCB ground plane 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 2.7V–17V; must be decoupled near pin |
| SVIN (Pin 2) | Signal VIN input | MSOP-only dedicated LDO input; connect to higher of VIN1/VIN2 or via diode OR-ing network |
| PGOOD1 (Pin 3) | Channel 1 power-good indicator | Open-drain output active low when VOUT1 deviates >7.5%; 32-cycle delay on fault detection |
| MODE/SYNC (Pin 4) | Mode select & external clock input | Tie to INTVCC for Burst Mode® (5µA IQ); tie to GND for pulse-skipping; accept 0.4V–(VINTVCC–0.3V) sync signal |
| PHASE (Pin 5) | Inter-channel phase control | Tie to GND for 0° (in-phase); tie to INTVCC for 180° (anti-phase); modulate external clock duty cycle for intermediate shifts |
| PGOOD2 (Pin 6) | Channel 2 power-good indicator | Independent open-drain status flag for VOUT2; identical timing and threshold behavior as PGOOD1 |
| ILIM (Pin 7) | Current limit configuration | GND = 1.8A full limit; INTVCC = 0.9A halved limit; 1V bias sets CH1=1.8A / CH2=0.9A |
| VIN2 (Pin 8) | Channel 2 input supply | Independent 2.7V–17V input; may differ from VIN1; enables dual-rail power domain separation |
| SW2 (Pin 9) | Channel 2 switch node | Connects to CH2 inductor; requires low-inductance layout and Kelvin return path to minimize ringing |
| RUN2 (Pin 10) | Channel 2 enable control | Logic-high active; must not float; internal pull-down ensures safe default shutdown |
| FB2 (Pin 11) | Channel 2 feedback input | Senses resistor divider tap; 0.6V reference enables precise VOUT2 programming; leakage <10nA |
| INTVCC (Pin 12) | Internal LDO output | 3.3V–3.9V regulated supply; bypass with ≥1µF low-ESR ceramic capacitor directly to GND |
| FB1 (Pin 13) | Channel 1 feedback input | Identical function to FB2; supports independent output voltage setting per channel |
| RUN1 (Pin 14) | Channel 1 enable control | Independent logic-enable; allows staggered startup or dynamic channel disable for power gating |
| SW1 (Pin 16) | Channel 1 switch node | High dv/dt node; requires tight loop area with CH1 inductor and input/output capacitors |
| GND (Pin 17) | Power and signal ground | Exposed thermal pad; must be solidly connected to PCB ground plane for θJA = 40°C/W rating |
Key Features
| Feature | Design Value |
|---|---|
| Burst Mode® operation | Reduces no-load IQ to 5µA (both channels) while maintaining regulation - critical for multi-week battery life in IoT endpoints |
| 180° out-of-phase switching | Cuts input capacitor RMS current by ~30% versus in-phase operation - lowers required CIN size and ESR |
| Programmable current limit | Three discrete ILIM states (full/half/asymmetric) enable optimized FET sizing and thermal derating per channel |
| Integrated soft-start | 500µs monotonic ramp per channel prevents inrush current and output overshoot during power-up |
| Dropout-capable 100% duty cycle | Maintains regulation down to VIN = VOUT + 0.3V with controlled quiescent current increase - extends usable battery range |
Applications
| Handheld Medical Scanner | Industrial Sensor Node |
|---|---|
Use Scenario: Portable ultrasound probe powered by single Li-ion cell requiring isolated 3.3V analog and 1.8V digital rails. IC Role / Device Role / Timing Role: Dual-output buck regulator generating synchronized, low-noise supplies with independent RUN control for subsystem power gating. Use Value: 2.25MHz operation enables <3mm² total inductor footprint; 5µA quiescent current extends scan time between charges by >12 hours. |
Use Scenario: Wireless vibration sensor mounted on rotating machinery, operating from 12V industrial bus with strict EMI limits. IC Role / Device Role / Timing Role: Dual-channel step-down converter delivering 5V for RF transceiver and 3.3V for MCU, configured in anti-phase mode. Use Value: 180° phase shift reduces input ripple amplitude by 50%, easing compliance with CISPR-25 Class 4 conducted emissions. |
| Portable Barcode Reader | Edge AI Camera Module |
Use Scenario: Battery-operated handheld reader needing fast wake-from-sleep response and minimal standby drain. IC Role / Device Role / Timing Role: Primary power management IC providing 5V for laser driver and 3.3V for CMOS image sensor, with Burst Mode® enabled. Use Value: 5µA combined IQ extends shelf life to >18 months; soft-start prevents false trigger during cold boot. |
Use Scenario: Compact vision system using low-power NPU requiring tightly regulated 0.8V core and 1.2V I/O supplies. IC Role / Device Role / Timing Role: Dual adjustable buck supplying precision voltages with independent FB pins and ±1% accuracy over temperature. Use Value: Adjustable 0.6V–VIN range supports exact NPU core voltage; 1% tolerance avoids derating and enables higher clock frequencies. |
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 |
|---|---|---|---|
| TPS65270RGET | Fixed 1.2MHz/2.2MHz dual 2A outputs; no Burst Mode®; higher 25µA IQ | Requires larger inductors; unsuitable for sub-10µA standby systems | Select when higher current per channel (2A) is needed and efficiency at light loads is secondary |
| MAX20073ATCB/V+T | Automotive-grade dual 1.2A; AEC-Q100 qualified; 12µA IQ; 2.1MHz switching | Includes watchdog timer and extended temp range (–40°C to +125°C); higher cost | Select for automotive infotainment or ADAS modules requiring functional safety support |
Compared with TPS65270RGET and MAX20073ATCB/V+T, the LTC3622EMSE-2#TRPBF offers the lowest quiescent current (5µA), precise ±1% output accuracy, and flexible phase control - making it optimal for space-constrained, battery-sensitive portable electronics where standby efficiency and EMI control are primary design drivers.
Availability
LTC3622EMSE-2#TRPBF is available at Aetrix Electronics and suitable for battery-powered systems, point-of-load supplies, and portable handheld scanners requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC3622EMSE-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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, communications, automotive, and healthcare markets.
The LTC3622EMSE-2#TRPBF belongs to Analog Devices' Power by Linear™ family of high-efficiency DC/DC regulators, designed specifically for ultra-low-power portable and battery-critical applications demanding high integration and minimal quiescent current.
FAQ
What is the maximum input voltage rating for the LTC3622EMSE-2#TRPBF?
The LTC3622EMSE-2#TRPBF has an absolute maximum input voltage rating of 17V on VIN1 and VIN2 pins. Operation above 18.5V triggers overvoltage lockout, suspending switching until voltage falls below 18.2V. This protection applies independently to each input rail, allowing robust handling of transient surges in industrial or automotive environments.
Does the LTC3622EMSE-2#TRPBF support fixed-output voltage configurations?
The LTC3622EMSE-2#TRPBF is an adjustable-output variant - it does not integrate fixed resistors. To set fixed VOUT, external resistor dividers must be connected to FB1 and FB2 pins per VOUT = 0.6V × (1 + R2/R1). Fixed-output versions (e.g., LTC3622-23/5) exist but are distinct part numbers with different markings and internal feedback networks.
How does the PHASE pin affect switching behavior in the LTC3622EMSE-2#TRPBF?
The PHASE pin on the LTC3622EMSE-2#TRPBF selects inter-channel timing: tied to GND yields 0° (in-phase) operation; tied to INTVCC enables 180° (anti-phase) switching. When used with an external clock on MODE/SYNC, PHASE = INTVCC allows duty-cycle-modulated phase shifts (e.g., 90°), reducing input ripple without requiring matched inductors or complex layout constraints.
Can the LTC3622EMSE-2#TRPBF operate with only one channel enabled?
Yes - the LTC3622EMSE-2#TRPBF supports independent channel control via RUN1 and RUN2 pins. With only one channel enabled, quiescent current drops to <4µA, and the disabled channel's switches remain off, eliminating shoot-through risk and minimizing standby losses. This enables dynamic power partitioning in multi-rail systems.
What thermal considerations apply to the MSOP package of the LTC3622EMSE-2#TRPBF?
The LTC3622EMSE-2#TRPBF in MSOP-16 uses an exposed thermal pad (Pin 17) that must be soldered to a PCB ground plane. Without this connection, θJA degrades from 40°C/W to >80°C/W, risking thermal shutdown at >0.8A load. Minimum recommended copper area is 100mm² with ≥4 thermal vias (0.3mm diameter) to inner ground layers.
LTC3622EMSE-2#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:
- 2.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LTC3622EMSE-2#TRPBF FAQ
1.How can I place an order for LTC3622EMSE-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3622EMSE-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 LTC3622EMSE-2#TRPBF reliable?
The price and inventory of LTC3622EMSE-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 LTC3622EMSE-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3622EMSE-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3622EMSE-2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3622EMSE-2#TRPBF?
LTC3622EMSE-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3622EMSE-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 LTC3622EMSE-2#TRPBF?
For technical support, including LTC3622EMSE-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3622EMSE-2#TRPBF requirements.
6.How does Aetrix verify that LTC3622EMSE-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3622EMSE-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 LTC3622EMSE-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3622EMSE-2#TRPBF?
All LTC3622EMSE-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3622EMSE-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 LTC3622EMSE-2#TRPBF part is unused and in its original packaging.
Return procedure for LTC3622EMSE-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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