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Analog Devices Inc. LTC3622HMSE-2#TRPBF
- Part No.:
- LTC3622HMSE-2#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-TFSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LTC3622HMSE-2#TRPBF.pdf
- Description:
- IC REG BUCK ADJ 1A DL 16MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,342
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Product details
Overview
LTC3622HMSE-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-used in battery-powered handheld scanners requiring compact, high-efficiency dual-rail power conversion.
For engineers reviewing the LTC3622HMSE-2#TRPBF datasheet, LTC3622HMSE-2#TRPBF pinout, LTC3622HMSE-2#TRPBF application, or LTC3622HMSE-2#TRPBF equivalent, key selection criteria include its 2.25MHz operation enabling small external inductors, ±1% output voltage accuracy, selectable Burst Mode® vs pulse-skipping mode, 180° programmable inter-channel phase shift, and H-grade 150°C junction temperature rating.
Technical Context
The LTC3622HMSE-2#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 FB-based output regulation referenced to a precise 0.6V internal bandgap.
It integrates dual N-channel and P-channel MOSFETs with RDS(ON) of 0.15Ω (NMOS) and 0.37Ω (PMOS) at VIN = 5V, supports external clock synchronization within ±50% of 2.25MHz, and provides programmable current limit via ILIM pin with full-scale 1.8A or halved 0.9A per channel options.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 2.25MHz fixed - enables use of sub-5mm inductors and reduces EMI fundamental frequency. |
| Input Voltage Range | 2.7V to 17V - supports single-cell Li-ion up to 4S battery stacks and industrial 12V rails. |
| Output Voltage Range | 0.6V to VIN - allows generation of core voltages (e.g., 1.2V, 1.8V) and I/O rails (3.3V, 5V) from one IC. |
| No-Load Quiescent Current | 5µA with both channels enabled - extends battery life in always-on portable systems. |
| Output Voltage Accuracy | ±1% over line/load/temperature - ensures stable microcontroller and sensor biasing without post-regulation. |
| Peak Output Current | 1A per channel - sufficient for powering FPGA I/O banks, RF transceivers, or dual-core microcontrollers. |
| Junction Temperature Range | –40°C to +150°C - qualified for under-hood automotive and industrial edge computing applications. |
Pinout & Package
Package: 16-Lead Plastic MSOP (MSE) with exposed pad (Pin 17 = GND). Thermal resistance θJA = 40°C/W; requires soldered exposed pad for rated performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1 | Channel 1 input supply | Accepts 2.7V–17V; powers INTVCC LDO and Channel 1 power stage. |
| PGOOD1 | Open-drain status indicator | Pulls low if VOUT1 deviates >7.5% from target; used for system power sequencing. |
| MODE/SYNC | Mode select & sync input | Tied to INTVCC → Burst Mode®; tied to GND → pulse-skipping; driven by external clock → synchronized operation. |
| PHASE | Inter-channel phase control | GND → 0° phase; INTVCC → 180° phase; enables ripple cancellation in shared input capacitors. |
| ILIM | Current limit configuration | GND → 1.8A/channel; INTVCC → 0.9A/channel; floating → asymmetric limits (1.8A/0.9A). |
| VIN2 | Channel 2 input supply | Independent of VIN1 - supports dual-input systems like backup battery + main rail. |
| SW2 | Channel 2 switch node | Connects to inductor; requires low-inductance layout to minimize switching noise. |
| RUN2 | Channel 2 enable input | Logic high (>1.0V) activates regulator; must not float - tie to GND or INTVCC for default state. |
| FB2 | Channel 2 feedback input | Senses resistor divider output; sets VOUT2 = 0.6V × (1 + R2/R1); short to VOUT for fixed-output variants. |
| INTVCC | Internal LDO output | 3.3V–3.9V regulated supply; bypass with ≥1µF low-ESR capacitor to GND for stability. |
| FB1 | Channel 1 feedback input | Identical function to FB2; enables independent output programming per channel. |
| RUN1 | Channel 1 enable input | Independent control of Channel 1 - supports staggered startup or dynamic rail shutdown. |
| SW1 | Channel 1 switch node | High dv/dt node; requires tight coupling to inductor and ground plane to reduce EMI. |
| GND | Power and signal reference | Exposed pad (Pin 17) must be soldered to PCB ground plane for thermal and electrical integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Burst Mode® operation | Reduces no-load IQ to 5µA while maintaining regulation - critical for multi-week battery life in IoT sensors. |
| 180° programmable phase shift | Halves input capacitor RMS current versus in-phase operation - cuts required CIN volume by ~30%. |
| Integrated 0.6V reference with ±1% accuracy | Eliminates need for external precision reference; ensures consistent output across temperature and load. |
| Internal soft-start (500µs) | Prevents inrush current during power-up - avoids brownout on shared input rails. |
| 100% duty cycle dropout operation | Maintains regulation down to VOUT - enables operation near battery end-of-life (e.g., 3.3V out from 3.4V Li-ion). |
Applications
| Battery-Powered Handheld Scanners | Point-of-Load Dual-Rail Systems |
|---|---|
Use Scenario: Portable barcode scanner powered by single-cell Li-ion (2.7–4.2V) requiring clean 3.3V logic rail and 1.8V processor core rail. IC Role / Device Role / Timing Role: Dual synchronous buck regulator providing independently controlled, low-noise DC supplies with sequenced enable via RUN1/RUN2. Use Value: 5µA quiescent current extends standby time to >6 months; 2.25MHz switching allows <2mm height inductors fitting slim form factors. |
Use Scenario: Industrial PLC module needing isolated 5V and 3.3V rails from a 12V backplane, with minimal board space and thermal budget. IC Role / Device Role / Timing Role: Compact dual-output DC/DC converter delivering regulated outputs with 180° phase shift to reduce input ripple on shared bulk capacitor. Use Value: Integrated MOSFETs eliminate external FETs and drivers; ±1% accuracy avoids need for post-regulator LDOs. |
| Portable Medical Monitoring Devices | Automotive Infotainment Power Rails |
Use Scenario: Wearable ECG monitor using coin-cell battery, requiring ultra-low-power 2.5V analog front-end and 1.2V digital rail. IC Role / Device Role / Timing Role: High-efficiency dual buck supplying precision analog and low-voltage digital domains with independent PGOOD signaling. Use Value: Burst Mode® maintains regulation at µA-level loads; 150°C H-grade rating supports operation inside sealed enclosures. |
Use Scenario: In-vehicle display unit deriving 5V USB and 3.3V MCU rails from 9–16V automotive battery with load dump immunity. IC Role / Device Role / Timing Role: Dual buck regulator handling wide-input transients (up to 19V OVLO) and supporting cold-crank operation down to 2.7V. Use Value: 17V absolute max rating and integrated OV/UV protection eliminate need for external TVS or supervisors. |
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 |
|---|---|---|---|
| TPS65270PWP | Fixed 1.2MHz frequency; no Burst Mode®; higher 25µA no-load IQ; 12V max input. | Lacks ultralow-IQ capability and 17V input headroom - unsuitable for long-life battery systems or 12V industrial rails. | Select only when cost sensitivity outweighs efficiency and input voltage requirements. |
| MAX20404ATPA/VY+ | 3.2MHz operation; 2.5V–16V input; 2.5µA no-load IQ; integrated PMIC sequencing - but only 0.8A per channel. | Higher frequency enables smaller passives but lower current rating limits use with high-power peripherals. | Prefer for space-constrained designs where 0.8A/channel suffices and sequencing logic adds value. |
Compared with TPS65270PWP and MAX20404ATPA/VY+, the LTC3622HMSE-2#TRPBF uniquely combines 2.25MHz operation, 17V input, 1A per channel, and 5µA no-load IQ in an MSOP package - making it optimal for thermally constrained, battery-sensitive dual-rail applications demanding both performance and longevity.
Availability
LTC3622HMSE-2#TRPBF is available at Aetrix Electronics and suitable for battery-powered handheld scanners, point-of-load dual-rail systems, and portable medical monitoring devices requiring stable component supply with guaranteed long-term availability.
Supply support for LTC3622HMSE-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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, industrial automation, and communications infrastructure.
The LTC3622 product line delivers dual-output, ultralow-quiescent-current synchronous buck regulators targeting portable, battery-critical, and thermally constrained applications where efficiency, size, and reliability are paramount.
FAQ
What is the maximum input voltage rating for the LTC3622HMSE-2#TRPBF?
The LTC3622HMSE-2#TRPBF has an absolute maximum input voltage rating of 17V on VIN1 and VIN2 pins. It also features built-in overvoltage lockout that suspends operation if either input exceeds 18.5V, resuming automatically once voltage falls below 18.2V. This protects internal MOSFETs during transient events such as load dump in automotive environments.
Does the LTC3622HMSE-2#TRPBF support independent enable control for each output channel?
Yes, the LTC3622HMSE-2#TRPBF provides fully independent enable control via RUN1 and RUN2 pins. Each pin accepts logic-high (>1.0V) to activate its respective channel and logic-low (<0.35V) to disable it. Neither pin may be left floating - they must be actively pulled to GND or INTVCC to ensure predictable startup and shutdown behavior in the LTC3622HMSE-2#TRPBF.
How does the PHASE pin affect switching behavior in the LTC3622HMSE-2#TRPBF?
In the LTC3622HMSE-2#TRPBF, the PHASE pin configures inter-channel timing: tied to GND yields 0° phase alignment, while tied to INTVCC enables 180° anti-phase operation. When used with an external clock on MODE/SYNC, PHASE = INTVCC allows duty-cycle-modulated phase shift (e.g., 90°). This reduces input ripple and EMI by staggering SW1/SW2 transitions - a key advantage in space-limited layouts sharing input capacitance.
What is the purpose of the ILIM pin on the LTC3622HMSE-2#TRPBF?
The ILIM pin on the LTC3622HMSE-2#TRPBF sets per-channel current limiting: grounding ILIM configures 1.8A peak limit for both channels; connecting to INTVCC halves the limit to 0.9A; biasing to 1V enables asymmetric limits (1.8A on Channel 1, 0.9A on Channel 2). This flexibility allows safe operation with smaller inductors or mismatched load profiles without external current-sense components in the LTC3622HMSE-2#TRPBF.
Can the LTC3622HMSE-2#TRPBF operate in 100% duty cycle mode?
Yes, the LTC3622HMSE-2#TRPBF supports 100% duty cycle operation during dropout conditions - maintaining regulation when VIN approaches VOUT. Internal circuitry preserves accurate current limiting even at high duty cycles, and the device automatically transitions between active switching and sleep modes to minimize quiescent current. This extends usable battery life in applications like single-cell Li-ion systems where VOUT = 3.3V must be sustained until VIN drops to ~3.4V.
LTC3622HMSE-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 ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MSOP-EP
LTC3622HMSE-2#TRPBF FAQ
1.How can I place an order for LTC3622HMSE-2#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3622HMSE-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 LTC3622HMSE-2#TRPBF reliable?
The price and inventory of LTC3622HMSE-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 LTC3622HMSE-2#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3622HMSE-2#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3622HMSE-2#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3622HMSE-2#TRPBF?
LTC3622HMSE-2#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3622HMSE-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 LTC3622HMSE-2#TRPBF?
For technical support, including LTC3622HMSE-2#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3622HMSE-2#TRPBF requirements.
6.How does Aetrix verify that LTC3622HMSE-2#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3622HMSE-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 LTC3622HMSE-2#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3622HMSE-2#TRPBF?
All LTC3622HMSE-2#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3622HMSE-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 LTC3622HMSE-2#TRPBF part is unused and in its original packaging.
Return procedure for LTC3622HMSE-2#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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