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Analog Devices Inc. LTC3622IDE-23/5#TRPBF
- Part No.:
- LTC3622IDE-23/5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
LTC3622IDE-23/5#TRPBF.pdf
- Description:
- IC REG BUCK 3.3V/5V 1A DL 14DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,610
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Product details
Overview
LTC3622IDE-23/5#TRPBF from Analog Devices is a dual-channel, 17V-input, synchronous step-down regulator with fixed 5V and 3.3V outputs, delivering up to 1A per channel. It operates at 2.25MHz, features ultralow 5µA no-load quiescent current (both channels enabled), ±1% output voltage accuracy, and integrated soft-start in a compact 14-pin DFN (3mm × 4mm) package - deployed in battery-powered handheld scanners and point-of-load supplies.
For engineers reviewing the LTC3622IDE-23/5#TRPBF datasheet, LTC3622IDE-23/5#TRPBF pinout, LTC3622IDE-23/5#TRPBF application, or LTC3622IDE-23/5#TRPBF equivalent, key selection criteria include fixed dual-output voltage assignment (5V/3.3V), 2.25MHz switching frequency with external sync capability, phase-shift programmability, selectable current limit via ILIM pin, and guaranteed operation from –40°C to 125°C junction temperature.
Technical Context
The LTC3622IDE-23/5#TRPBF implements a constant-frequency, peak-current-mode control architecture with internal compensation and independent RUN/PGOOD per channel. Its dual regulators share a single INTVCC LDO powered from VIN1, support 180° out-of-phase operation via PHASE pin, and enable precise load-sharing through programmable per-channel current limiting (full-scale or halved via ILIM).
It integrates overvoltage lockout (18.5V trip), undervoltage lockout (2.5V enable threshold), and dropout operation with 100% duty cycle capability. Burst Mode® and pulse-skipping modes are selected via MODE/SYNC pin, with fixed VOUT configuration eliminating external feedback resistors - confirming its role as a ready-to-deploy dual PoL solution for space-constrained, low-quiescent-power systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 17V - supports wide-range industrial and battery inputs including 12V nominal rails and Li-ion stacks. |
| Output Voltages | Fixed 5.0V ±1% (Ch1) and 3.3V ±1% (Ch2) - eliminates feedback resistor networks and reduces BOM count. |
| Switching Frequency | 2.25MHz ±15% - enables use of small 2.2–4.7µH inductors and minimizes EMI fundamental frequency. |
| No-Load Quiescent Current | 5µA with both channels enabled - extends runtime in always-on battery systems like portable scanners. |
| Output Current Capability | 1A per channel - sufficient for powering microcontrollers, sensors, and interface ICs simultaneously. |
| Package & Thermal | 14-pin DFN (3mm × 4mm), exposed pad soldered to GND - θJA = 40°C/W enables >1W dissipation without forced air. |
| Operating Temperature | –40°C to 125°C junction - qualified for industrial and automotive under-hood adjacent applications. |
Pinout & Package
Package: 14-lead plastic DFN (3mm × 4mm), exposed thermal pad (Pin 15) must be soldered to PCB ground for rated electrical and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1 (Pin 1) | Channel 1 input supply | Powers Ch1 switch and INTVCC LDO; must be ≥2.7V and ≤17V. |
| PGOOD1 (Pin 2) | Open-drain power-good indicator (Ch1) | Asserts high after regulation achieved; pulls low if VOUT1 deviates >7.5% from target. |
| MODE/SYNC (Pin 3) | Mode select & external clock input | Tied to INTVCC for Burst Mode®; grounded for pulse-skipping; accepts 0.4V–(INTVCC–0.3V) external clock. |
| PHASE (Pin 4) | Phase relationship control | GND → 0° phase shift; INTVCC → 180° shift or edge-controlled shift with external clock on MODE/SYNC. |
| PGOOD2 (Pin 5) | Open-drain power-good indicator (Ch2) | Independent status signal for VOUT2; same tolerance and timing behavior as PGOOD1. |
| ILIM (Pin 6) | Per-channel current limit programming | GND → full 1.8A limit; INTVCC → 0.9A limit; 1V bias → Ch1 full / Ch2 halved. |
| VIN2 (Pin 7) | Channel 2 input supply | Independent of VIN1; supports split-rail or redundant input architectures. |
| SW2 (Pin 8) | Channel 2 switch node | Connects to Ch2 inductor; requires low-inductance layout and local ceramic bypass. |
| RUN2 (Pin 9) | Channel 2 enable control | Logic-high (>0.35V) activates Ch2; must not float - tie to GND or control logic. |
| FB2 (Pin 10) | Channel 2 feedback input | Internally connected to 5V/3.3V divider - shorted to VOUT2 in fixed-output configuration. |
| INTVCC (Pin 11) | Internal LDO output | 3.6V ±0.3V supply for gate drivers and logic; bypass with ≥1µF low-ESR capacitor to GND. |
| FB1 (Pin 12) | Channel 1 feedback input | Internally connected to 5V/3.3V divider - shorted to VOUT1 in fixed-output configuration. |
| RUN1 (Pin 13) | Channel 1 enable control | Logic-high (>0.35V) activates Ch1; independent sequencing possible vs. RUN2. |
| SW1 (Pin 14) | Channel 1 switch node | Connects to Ch1 inductor; critical for EMI and thermal management - minimize loop area. |
| GND (Pin 15) | Power and signal ground | Exposed thermal pad - mandatory connection to solid PCB ground plane for thermal and noise integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Dual fixed-output configuration | Eliminates external feedback resistors for 5V/3.3V rails - reduces component count and layout sensitivity. |
| Ultralow quiescent current | 5µA total (both channels idle) - enables multi-year battery life in always-on IoT and portable instrumentation. |
| 2.25MHz switching frequency | Supports <10mm² total power stage footprint using 3.3µH or smaller inductors and 22µF ceramic output caps. |
| Programmable per-channel current limit | Full (1.8A) or halved (0.9A) limit per channel via ILIM pin - enables asymmetric load handling and fault containment. |
| 180° out-of-phase operation | Reduces input ripple current by ~70% vs. in-phase operation - lowers required input capacitance and EMI filtering. |
| Integrated soft-start | 500µs monotonic ramp per channel - prevents inrush current and output overshoot during power-up. |
Applications
| Handheld Barcode Scanners | Industrial Sensor Nodes |
|---|---|
Use Scenario: Compact, battery-operated scanner requiring simultaneous 5V for laser diode driver and 3.3V for MCU and CMOS image sensor. IC Role / Device Role / Timing Role: Dual PoL regulator providing isolated, regulated rails with independent enable control and power-good signaling. Use Value: 5µA quiescent current extends alkaline AA battery life beyond 2 years in standby; 2.25MHz operation avoids AM radio band interference. |
Use Scenario: Wireless vibration sensor node mounted on rotating machinery, powered by primary lithium cell with 10+ year lifetime requirement. IC Role / Device Role / Timing Role: Primary DC-DC converter generating stable 3.3V for RF transceiver and 5V for analog front-end amplifier. Use Value: Fixed-output configuration removes trimming uncertainty; –40°C to 125°C rating ensures reliability in uncontrolled ambient environments. |
| Medical Point-of-Care Devices | Automotive Infotainment Subsystems |
Use Scenario: Portable glucose meter with LCD display, Bluetooth LE radio, and precision ADC - all requiring clean, low-noise 3.3V and 5V supplies. IC Role / Device Role / Timing Role: Dual-output regulator supplying independent, ripple-sensitive domains with burst-mode efficiency at intermittent measurement loads. Use Value: Burst Mode® reduces light-load losses below 100µA, enabling >5000 measurements per CR2032 coin cell charge. |
Use Scenario: In-vehicle USB-C hub requiring [email protected] for charging and 3.3V@500mA for USB PD controller and display interface. IC Role / Device Role / Timing Role: Secondary regulator accepting 12V vehicle bus input and delivering tightly regulated dual outputs with overvoltage protection. Use Value: 18.5V VIN overvoltage lockout protects against load-dump transients; 100% duty cycle supports cold-crank down to 4.5V. |
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 | Adjustable outputs (0.6–5.5V), 2.2MHz, 2A per channel, 16-pin QFN; no fixed 5V/3.3V option. | Requires external feedback resistors; higher current capability but larger package and higher IQ (25µA). | Select when adjustable outputs or >1A per rail are needed; avoid if BOM simplification and ultra-low IQ are priorities. |
| MP2491DS-LF-Z | Single 5V output, 2A, 2.2MHz, 8-pin SOIC; no second channel or 3.3V option. | Cannot replace dual-rail function without adding second IC; lacks PGOOD, phase control, and ILIM programming. | Only suitable as partial replacement where only 5V rail is required; adds complexity and board area versus integrated dual solution. |
Compared with TPS65270RGET and MP2491DS-LF-Z, the LTC3622IDE-23/5#TRPBF delivers verified fixed 5V/3.3V outputs with lowest quiescent current (5µA), integrated phase control, and minimal external components - making it optimal for space- and battery-limited dual-rail applications where output voltages are known and invariant.
Availability
LTC3622IDE-23/5#TRPBF is available at Aetrix Electronics and suitable for battery-powered handheld scanners, industrial sensor nodes, and medical point-of-care devices requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for LTC3622IDE-23/5#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 since 1965.
The LTC3622IDE-23/5#TRPBF belongs to the LTC® µModule and monolithic DC/DC regulator product line, designed specifically for high-efficiency, low-quiescent-power point-of-load conversion in space-constrained and battery-sensitive applications.
FAQ
What output voltages does the LTC3622IDE-23/5#TRPBF provide?
The LTC3622IDE-23/5#TRPBF provides fixed 5.0V ±1% on Channel 1 and 3.3V ±1% on Channel 2. These values are factory-trimmed and do not require external feedback resistors - confirmed in the Electrical Characteristics table (VOUT1 = 4.95–5.05V, VOUT2 = 3.267–3.333V at TJ = –40°C to 125°C).
Does the LTC3622IDE-23/5#TRPBF support external frequency synchronization?
Yes, the LTC3622IDE-23/5#TRPBF supports external clock synchronization via the MODE/SYNC pin. It accepts an external clock signal with amplitude between 0.4V and (INTVCC – 0.3V), and locks within ±50% of its nominal 2.25MHz frequency - enabling EMI reduction and multi-regulator phase alignment.
How is phase relationship controlled between the two channels of the LTC3622IDE-23/5#TRPBF?
Phase relationship is controlled by the PHASE pin: grounding it sets 0° (in-phase) operation; tying it to INTVCC enables 180° (anti-phase) operation or edge-controlled phase shift when an external clock is applied to MODE/SYNC - reducing input ripple and improving EMI performance in shared input designs.
What is the quiescent current of the LTC3622IDE-23/5#TRPBF under no-load conditions?
The LTC3622IDE-23/5#TRPBF draws 5µA total input quiescent current when both channels are enabled and idle in Burst Mode® - measured at VRUN1 = VRUN2 = 2V, MODE/SYNC = 3V, and no load. With only one channel enabled, IQ drops below 4µA, as specified in the Electrical Characteristics table.
Can the LTC3622IDE-23/5#TRPBF operate in dropout mode?
Yes, the LTC3622IDE-23/5#TRPBF supports 100% duty cycle operation and enters dropout mode when VIN approaches VOUT. During dropout, it maintains regulation by transitioning between active and sleep states - preserving ultralow quiescent current and extending usable input voltage range down to ~3.3V for the 3.3V rail.
LTC3622IDE-23/5#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-WFDFN Exposed Pad
- 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):
- 2.7V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 3.3V, 5V
- Voltage - Output (Max):
- -
- 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:
- 14-DFN (4x3)
LTC3622IDE-23/5#TRPBF FAQ
1.How can I place an order for LTC3622IDE-23/5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3622IDE-23/5#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 LTC3622IDE-23/5#TRPBF reliable?
The price and inventory of LTC3622IDE-23/5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3622IDE-23/5#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3622IDE-23/5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3622IDE-23/5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3622IDE-23/5#TRPBF?
LTC3622IDE-23/5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3622IDE-23/5#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 LTC3622IDE-23/5#TRPBF?
For technical support, including LTC3622IDE-23/5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3622IDE-23/5#TRPBF requirements.
6.How does Aetrix verify that LTC3622IDE-23/5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3622IDE-23/5#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 LTC3622IDE-23/5#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3622IDE-23/5#TRPBF?
All LTC3622IDE-23/5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3622IDE-23/5#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 LTC3622IDE-23/5#TRPBF part is unused and in its original packaging.
Return procedure for LTC3622IDE-23/5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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