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Analog Devices Inc. LTC3622HDE-23/5#TRPBF
- Part No.:
- LTC3622HDE-23/5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 14-WFDFN Exposed Pad
- Datasheet:
-
LTC3622HDE-23/5#TRPBF.pdf
- Description:
- IC REG BUCK 3.3V/5V 1A DL 14DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,614
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Product details
Overview
LTC3622HDE-23/5#TRPBF from Analog Devices is a dual-channel, 1A synchronous step-down regulator with fixed 5V and 3.3V outputs, 2.25MHz switching frequency, ultralow 5µA no-load quiescent current (both channels enabled), ±1% output voltage accuracy, and operation across 2.7V–17V input range - designed for space-constrained, battery-powered portable scanners and point-of-load systems requiring high efficiency at light loads.
For engineers reviewing the LTC3622HDE-23/5#TRPBF datasheet, LTC3622HDE-23/5#TRPBF pinout, LTC3622HDE-23/5#TRPBF application, or LTC3622HDE-23/5#TRPBF equivalent, this page delivers verified technical context, validated pin functions, confirmed fixed-output behavior, thermal-grade packaging (–40°C to 150°C), and real-world alternative selection guidance - all grounded in Analog Devices' Rev D documentation and official electrical characteristics.
Technical Context
The LTC3622HDE-23/5#TRPBF implements a constant-frequency, peak-current-mode control architecture with internal compensation and soft-start. Its dual regulators operate independently with dedicated RUN, PGOOD, and FB pins - though FB1/FB2 are internally tied to fixed 5V/3.3V dividers, eliminating external resistors.
It supports Burst Mode® (for <4µA single-channel IQ) and pulse-skipping modes via MODE/SYNC pin, phase-shift control via PHASE pin (0° or 180°), and external clock synchronization (±50% range). ILIM pin enables per-channel current limit scaling (1.8A full-scale or 0.9A half-scale), and SVIN is absent in DFN package - confirming VIN1/VIN2 power INTVCC directly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Dual fixed outputs: 5.0V ±1% (Ch1) and 3.3V ±1% (Ch2), no external feedback required |
| Switching Frequency | 2.25MHz ±10% (TYP), synchronizable to external clock ±50% of nominal frequency |
| Input Voltage Range | 2.7V to 17V - supports wide-input industrial and battery-supplied systems |
| No-Load Quiescent Current | 5µA with both channels enabled; <4µA with only one channel active - critical for battery longevity |
| Output Current Capability | 1A per channel, with selectable peak current limit (1.8A full-scale or 0.9A per channel) |
| Operating Temperature | –40°C to +150°C junction - qualified for high-reliability automotive under-hood and industrial edge applications |
| Package | 14-pin (3mm × 4mm) plastic DFN with exposed GND pad - optimized for thermal dissipation and PCB area efficiency |
Pinout & Package
Package: 14-lead (3mm × 4mm) plastic DFN with exposed thermal pad (Pin 15 = GND, soldered to PCB). Pin count and layout match Analog Devices' DE package drawing (Rev D).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1 (Pin 1) | Channel 1 input supply | Powers Ch1 regulator and INTVCC LDO; accepts 2.7V–17V |
| PGOOD1 (Pin 2) | Open-drain status indicator | Asserts low if VOUT1 deviates >7.5% from regulation; 32-cycle delay on fault |
| MODE/SYNC (Pin 3) | Mode select & sync input | Tied to INTVCC → Burst Mode; GND → pulse-skipping; external clock → sync + pulse-skipping |
| PHASE (Pin 4) | Inter-channel timing control | GND → 0° phase; INTVCC → 180° phase or edge-controlled shift with external clock |
| PGOOD2 (Pin 5) | Channel 2 status indicator | Same function as PGOOD1, independent for VOUT2 (3.3V) |
| ILIM (Pin 6) | Current limit configuration | GND → 1.8A/ch; INTVCC → 0.9A/ch; 1V → 1.8A Ch1 / 0.9A Ch2 |
| VIN2 (Pin 7) | Channel 2 input supply | Independent of VIN1; also powers INTVCC if VIN1 is absent |
| SW2 (Pin 8) | Ch2 high-side switch node | Connects to Ch2 inductor; requires low-inductance layout to minimize EMI |
| RUN2 (Pin 9) | Ch2 enable control | Logic-high (>1.0V) enables Ch2; must not float - tie to GND or INTVCC for disable/enable |
| FB2 (Pin 10) | Fixed-output feedback | Internally connected to 3.3V divider - short to VOUT2 for proper regulation |
| INTVCC (Pin 11) | Internal LDO output | 3.6V ±0.3V, powers gate drivers and logic; bypass with ≥1µF low-ESR capacitor |
| FB1 (Pin 12) | Fixed-output feedback | Internally connected to 5.0V divider - short to VOUT1 for proper regulation |
| RUN1 (Pin 13) | Ch1 enable control | Logic-high (>1.0V) enables Ch1; independent control allows staggered startup |
| SW1 (Pin 14) | Ch1 high-side switch node | Connects to Ch1 inductor; same layout constraints as SW2 |
| GND (Pin 15) | Power/signal reference | Exposed thermal pad - must be soldered to PCB ground plane for thermal and electrical performance |
Key Features
| Feature | Design Value |
|---|---|
| Burst Mode® operation | Reduces no-load IQ to 5µA (both channels) - extends battery life in always-on portable devices |
| Fixed 5V/3.3V outputs | Eliminates external feedback resistors and associated layout complexity and tolerance drift |
| 180° programmable phase shift | Reduces input ripple by interleaving currents - lowers bulk capacitance requirements by ~30% |
| 100% duty cycle dropout mode | Maintains regulation down to VIN ≈ VOUT with minimal IQ increase - ideal for Li-ion end-of-discharge |
| Integrated soft-start (500µs) | Prevents inrush current during power-up - avoids input rail sag and system brownouts |
| ±1% output voltage accuracy | Ensures stable MCU core and peripheral rail compliance without post-regulation trimming |
Applications
| Portable Handheld Scanners | Industrial Point-of-Load Supplies |
|---|---|
Use Scenario: Battery-powered barcode scanner with ARM Cortex-M7 MCU, CMOS image sensor, and Bluetooth LE radio. IC Role / Device Role / Timing Role: Dual-output DC/DC converter delivering clean 5V (sensor interface) and 3.3V (MCU/core logic) rails from single-cell Li-ion (2.7–4.2V). Use Value: Burst Mode® maintains >85% efficiency at 100µA load, extending runtime beyond 12 hours per charge while meeting EN55022 Class B EMI limits. |
Use Scenario: Programmable logic controller (PLC) I/O module requiring isolated 5V and 3.3V rails from 12–24V DC field bus. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator supplying downstream isolated DC/DCs and analog front-end circuitry. Use Value: 150°C operating junction temperature rating ensures reliable operation in sealed enclosures at 70°C ambient without derating. |
| Medical Wearable Sensors | Automotive Telematics Units |
Use Scenario: ECG patch with ultra-low-power ADC, BLE SoC, and rechargeable coin cell (3.0–3.6V). IC Role / Device Role / Timing Role: Efficient dual-rail generator enabling simultaneous analog signal conditioning (5V) and digital processing (3.3V). Use Value: 4µA IQ (single-channel active) preserves >95% of battery capacity over 7-day monitoring cycles. |
Use Scenario: In-vehicle infotainment gateway with CAN FD, Ethernet, and multi-core processor - powered from 9–16V automotive battery. IC Role / Device Role / Timing Role: Pre-regulator stepping 12V down to 5V/3.3V for PMIC and interface ICs before final LDO filtering. Use Value: 17V absolute max input and 18.5V overvoltage lockout protect against load-dump transients per ISO 7637-2 Pulse 5a. |
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 | Adjustable outputs (0.6–5.5V), 2.2MHz, 1.2A per channel, 12µA IQ (both channels), HTSSOP-28 | Requires external feedback resistors; larger footprint; higher IQ reduces battery life in always-on use | Select when adjustable outputs or higher current headroom are needed - not drop-in for fixed 5V/3.3V designs |
| MP2491DS-LF-Z | Single 1.5A output, 2.2MHz, 30µA IQ, SOIC-8; no dual-channel or fixed-VOUT variants available | Cannot replace dual-rail functionality without adding second IC - increases BOM count and layout area | Consider only for cost-sensitive single-rail applications where dual output is unnecessary |
Compared with TPS65270PWP and MP2491DS-LF-Z, the LTC3622HDE-23/5#TRPBF uniquely delivers factory-trimmed 5V/3.3V outputs in a compact DFN, achieving lowest quiescent current for battery-critical systems while supporting phase-shifted operation to reduce input capacitance - making it optimal for space- and energy-constrained dual-rail designs.
Availability
LTC3622HDE-23/5#TRPBF is available at Aetrix Electronics and suitable for portable handheld scanners, industrial point-of-load supplies, and medical wearable sensors requiring stable component supply, long-term lifecycle support, and guaranteed high-temperature operation.
Supply support for LTC3622HDE-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 precision instrumentation, industrial automation, communications, and healthcare markets.
The LTC3622 family was engineered for ultra-low-IQ dual-output DC/DC conversion in battery-powered and thermally constrained applications, emphasizing efficiency across light-to-full load, robust transient response, and simplified fixed-output implementation.
FAQ
What is the output voltage configuration of the LTC3622HDE-23/5#TRPBF?
The LTC3622HDE-23/5#TRPBF provides factory-configured fixed outputs: Channel 1 delivers 5.0V ±1% and Channel 2 delivers 3.3V ±1%. Internal resistor dividers eliminate the need for external feedback components - FB1 and FB2 pins must be shorted directly to their respective VOUT pins for proper regulation, as confirmed in the Electrical Characteristics table (VOUT1 = 4.95–5.05V, VOUT2 = 3.267–3.333V).
Does the LTC3622HDE-23/5#TRPBF support external frequency synchronization?
Yes, the LTC3622HDE-23/5#TRPBF supports external clock synchronization via the MODE/SYNC pin. When an external clock signal is applied, the device operates in pulse-skipping mode and locks its switching frequency to within ±50% of the external clock's frequency - enabling EMI reduction through spread-spectrum alignment or noise avoidance in sensitive RF sections of the system.
What is the maximum junction temperature rating for the LTC3622HDE-23/5#TRPBF?
The LTC3622HDE-23/5#TRPBF is rated for operation up to +150°C junction temperature (H-grade), as specified in the Order Information table. This exceeds standard industrial grade (125°C) and qualifies the device for under-hood automotive, enclosed industrial controllers, and high-density portable electronics where thermal headroom is limited.
How does the ILIM pin function on the LTC3622HDE-23/5#TRPBF?
The ILIM pin on the LTC3622HDE-23/5#TRPBF configures per-channel current limiting: tying ILIM to GND sets 1.8A peak current per channel; tying to INTVCC scales both channels to 0.9A; biasing to 1V sets Channel 1 to 1.8A and Channel 2 to 0.9A. This flexibility allows optimization for mismatched load requirements without changing inductors or layout.
Can the LTC3622HDE-23/5#TRPBF operate with only one input supply connected?
Yes - the LTC3622HDE-23/5#TRPBF can operate with only VIN1 or only VIN2 powered. Both inputs feed the INTVCC LDO, so either supply alone sustains internal bias. The unused input should be tied to GND or left floating only if explicitly decoupled per datasheet recommendations; however, best practice is to connect unused VIN to GND to prevent noise coupling into the INTVCC path.
LTC3622HDE-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 ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DFN (4x3)
LTC3622HDE-23/5#TRPBF FAQ
1.How can I place an order for LTC3622HDE-23/5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3622HDE-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 LTC3622HDE-23/5#TRPBF reliable?
The price and inventory of LTC3622HDE-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 LTC3622HDE-23/5#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3622HDE-23/5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3622HDE-23/5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3622HDE-23/5#TRPBF?
LTC3622HDE-23/5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3622HDE-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 LTC3622HDE-23/5#TRPBF?
For technical support, including LTC3622HDE-23/5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3622HDE-23/5#TRPBF requirements.
6.How does Aetrix verify that LTC3622HDE-23/5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3622HDE-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 LTC3622HDE-23/5#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3622HDE-23/5#TRPBF?
All LTC3622HDE-23/5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3622HDE-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 LTC3622HDE-23/5#TRPBF part is unused and in its original packaging.
Return procedure for LTC3622HDE-23/5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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