My Inquiry
My Account
Analog Devices Inc. LTC3417EDHC#TRPBF
- Part No.:
- LTC3417EDHC#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-WFDFN Exposed Pad
- Datasheet:
-
LTC3417EDHC#TRPBF.pdf
- Description:
- IC REG BUCK ADJ DL 16DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,549
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3417EDHC#TRPBF from Analog Devices (formerly Linear Technology) is a dual-channel synchronous step-down DC/DC regulator with independent 1.4A and 800mA outputs, operating from 2.25V to 5.5V input, programmable switching frequency up to 4MHz, internal low-RDS(ON) MOSFETs, and 0.8V feedback reference-designed for space-constrained portable power rails in digital cameras and cellular phones.
For engineers reviewing the LTC3417EDHC#TRPBF datasheet, LTC3417EDHC#TRPBF pinout, LTC3417EDHC#TRPBF application, or LTC3417EDHC#TRPBF equivalent, key selection criteria include guaranteed output current per channel, phase-selectable operation for input capacitor RMS reduction, Burst Mode® vs Pulse Skip mode trade-offs, and DFN-16 (3mm × 3mm) thermal performance with exposed PGND2 pad.
Technical Context
The LTC3417EDHC#TRPBF employs a constant-frequency current-mode control architecture shared across both channels, with independent error amplifiers, ITH compensation pins, and RUN enable inputs. Its dual P-channel high-side/N-channel low-side synchronous switches eliminate external Schottky diodes and support 100% duty-cycle dropout operation.
Frequency is set either by connecting FREQ to VIN (1.5MHz fixed) or via external resistor (0.6–4MHz), while MODE pin selects Burst Mode® (high light-load efficiency), Pulse Skip (low ripple), or forced continuous mode. PHASE pin configures second channel in-phase or 180° out-of-phase relative to channel 1 to reduce input RMS current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.25V to 5.5V - supports single-cell Li-ion, Li-polymer, and regulated 3.3V/5V rails without pre-regulation. |
| Output Current (Ch1 / Ch2) | 1.4A / 800mA - guaranteed minimum per channel with internal current limiting (ILIM1 = 1.8A typ, ILIM2 = 1.0A typ). |
| Switching Frequency | Programmable 0.6–4MHz - enables use of ultra-low-profile inductors ≤2mm height and ceramic capacitors. |
| Feedback Reference Voltage | 0.8V ±2% - sets output voltage range from 0.8V to 5V using external resistor dividers. |
| Quiescent Current (Sleep) | 125μA total - extends battery life in standby; drops to <1μA in shutdown. |
| Efficiency (Peak) | Up to 95% - achieved with low RDS(ON) internal switches (SW1 top/bottom: 88mΩ/84mΩ at 3.6V). |
| Thermal Package | 16-lead 3mm × 3mm DFN with exposed PGND2 pad - θJA = 43°C/W, rated for –40°C to +85°C ambient. |
Pinout & Package
Package: 16-lead (3mm × 3mm) plastic DFN with exposed thermal pad (Pin 17 = PGND2/GNDD), RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PGND1 (Pin 16) | Power ground for SW1 N-channel driver | Separate low-impedance return path for channel 1 switch node; must be connected to local PGND plane. |
| SW1 (Pin 15) | Channel 1 switch node | Connects to inductor L1; swings between VIN1 and PGND1; requires tight layout to minimize EMI and ringing. |
| PHASE (Pin 14) | Phase relationship control input | Logic-high (VIN) = in-phase; logic-low (GND) = 180° out-of-phase - reduces input capacitor RMS current. |
| GNDA (Pin 13) | Analog ground reference | Reference for internal error amplifiers and comparators; must be tied to quiet analog ground, not PGND. |
| FREQ (Pin 12) | Oscillator frequency programming | Connect to VIN for 1.5MHz; connect RT resistor to GND for 0.6–4MHz - sets timing ramp current. |
| PGOOD (Pin 11) | Open-drain power-good indicator | Pulled low when either VOUT deviates >±6% from regulation; active only when corresponding RUN pin is high. |
| SW2 (Pin 10) | Channel 2 switch node | Connects to inductor L2; swings between VIN2 and PGND2; shares exposed pad return path. |
| PGND2/GNDD (Pins 1,10,11,17) | Power/digital ground for SW2 and logic | Exposed pad (Pin 17) must be soldered to PCB ground plane for thermal and electrical performance. |
| RUN2 (Pin 7) | Enable control for 800mA channel | Logic-high ≥0.85V enables channel 2; 0V disables - allows independent sequencing or partial shutdown. |
| ITH2 (Pin 6) | Channel 2 error amplifier compensation | Voltage-controlled current limit threshold; 0–1.5V range sets peak inductor current for stability tuning. |
| VFB2 (Pin 5) | Channel 2 feedback input | Monitors resistive divider output; regulates to 0.8V reference - determines VOUT2 = 0.8V × (1 + R1/R2). |
| VFB1 (Pin 4) | Channel 1 feedback input | Monitors resistive divider output; regulates to 0.8V reference - determines VOUT1 = 0.8V × (1 + R1/R2). |
| ITH1 (Pin 3) | Channel 1 error amplifier compensation | Voltage-controlled current limit threshold; 0–1.5V range sets peak inductor current for stability tuning. |
| VIN1 (Pin 2) | Channel 1 P-channel switch supply | Input for 1.4A regulator; must be decoupled with low-ESR ceramic capacitor near pin. |
| RUN1 (Pin 1) | Enable control for 1.4A channel | Logic-high ≥0.85V enables channel 1; 0V disables - supports independent power domain control. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent synchronous buck regulators | Enables compact dual-rail power supply with no external diodes - reduces BOM count and board area. |
| 180° phase-selectable operation | Reduces input capacitor RMS current by ~30% versus in-phase mode - lowers derating requirement and size. |
| Burst Mode® and Pulse Skip selectable modes | Delivers >85% efficiency at 1mA load (Burst) or <10mVPP ripple at light loads (Pulse Skip) - matches system noise/efficiency needs. |
| Internal soft-start with individual RUN control | 1024-cycle digital soft-start per channel prevents inrush; RUN pins allow staggered startup or dynamic enable/disable. |
| Power Good (PGOOD) with dual-channel monitoring | Single open-drain output asserts only when both enabled outputs are within ±6% - simplifies system power sequencing. |
| 100% duty-cycle dropout operation | Maintains regulation down to VIN ≈ VOUT + ILOAD × RDS(ON) - critical for battery-powered systems near end-of-discharge. |
Applications
| Digital Camera Core Power | Cellular Phone Baseband Supply |
|---|---|
Use Scenario: Powers image sensor core (1.8V/1.4A) and ISP (2.5V/800mA) from single Li-ion cell (3.0–4.2V). IC Role / Device Role / Timing Role: Dual-output synchronous buck regulator providing tightly regulated, low-noise, sequenced rails with minimal footprint. Use Value: Eliminates need for two discrete converters; phase control cuts input cap size by 30%; Burst Mode extends capture time per charge. |
Use Scenario: Supplies application processor (1.2V) and RF transceiver (2.8V) in GSM/UMTS handset with dynamic load profiles. IC Role / Device Role / Timing Role: Dual-channel DC/DC with independent RUN control enables power domain isolation and fast wake/sleep transitions. Use Value: 125μA sleep current minimizes standby drain; PGOOD monitors both rails for safe boot; 4MHz option allows 1.0μH inductors. |
| PDA System-on-Chip (SoC) Rails | Wireless Modem Core Logic |
Use Scenario: Generates 1.5V core and 3.3V I/O voltages for ARM-based PDA SoC under bursty CPU and display loads. IC Role / Device Role / Timing Role: High-efficiency dual buck with Pulse Skip mode maintains low ripple during LCD refresh and data transfer. Use Value: 95% peak efficiency reduces thermal load on small PCB; 0.8V reference enables precise low-voltage regulation. |
Use Scenario: Powers baseband processor (1.8V) and WLAN radio (3.3V) in DSL/wireless modem with strict EMI limits. IC Role / Device Role / Timing Role: Synchronous converter with forced continuous mode delivers fixed-frequency noise for predictable filtering. Use Value: 1.5MHz fixed frequency avoids AM band interference; DFN package aids thermal management in enclosed housing. |
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 frequency; integrated LDO for auxiliary rail; higher quiescent current (250μA sleep) | Targets automotive infotainment; lacks phase control and Burst Mode® | Choose for AEC-Q100 compliance and integrated LDO; avoid if phase optimization or sub-100μA sleep is required. |
| ISL95210IRZ | Supports 3A/2A outputs; 300kHz–2MHz range; no Burst Mode®, only pulse-skip and forced-CCM | Designed for notebook CPU VR; larger QFN-32 package; higher max input (24V) | Choose for higher current or industrial input range; avoid for portable battery life-critical designs due to missing Burst Mode®. |
Compared with TPS65270RGET and ISL95210IRZ, the LTC3417EDHC#TRPBF offers unique phase-selectable operation and industry-leading 125μA sleep current in a 3mm × 3mm DFN, making it optimal for space- and battery-limited portable applications where input capacitor size and standby drain are critical.
Availability
LTC3417EDHC#TRPBF is available at Aetrix Electronics and suitable for digital camera power management, cellular phone baseband supplies, and PDA SoC rail generation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LTC3417EDHC#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 (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving precision instrumentation, communications, and power conversion markets.
The LTC3417EDHC#TRPBF belongs to Linear's high-efficiency monolithic DC/DC converter product line, engineered specifically for portable and battery-powered systems demanding ultra-low quiescent current, small solution size, and flexible multi-rail power delivery.
FAQ
What is the maximum supported switching frequency for the LTC3417EDHC#TRPBF?
The LTC3417EDHC#TRPBF supports a programmable switching frequency from 0.6MHz to 4MHz when an external resistor is connected from the FREQ pin to ground. When FREQ is tied directly to VIN, it operates at a fixed 1.5MHz. The maximum achievable frequency is constrained by minimum on-time and duty cycle limits, calculated as fO(MAX) = 6.67 × (VOUT/VIN(MAX)) MHz.
Does the LTC3417EDHC#TRPBF require external Schottky diodes?
No, the LTC3417EDHC#TRPBF does not require external Schottky diodes. It integrates synchronous P-channel high-side and N-channel low-side MOSFETs for both channels, eliminating conduction losses and heat generation associated with external diodes. This design achieves up to 95% peak efficiency and simplifies PCB layout.
How does the PHASE pin affect input capacitor sizing in the LTC3417EDHC#TRPBF?
When the PHASE pin is set low (0V), the LTC3417EDHC#TRPBF operates its two channels 180° out-of-phase, reducing the RMS current on the input capacitor by approximately 25–30% compared to in-phase operation. This allows use of smaller, lower-RMS-rated input capacitors and improves overall power delivery efficiency.
What is the function of the MODE pin on the LTC3417EDHC#TRPBF?
The MODE pin on the LTC3417EDHC#TRPBF selects the light-load operating mode for both channels: logic-high (>VIN – 0.5V) enables Burst Mode® for highest efficiency, logic-low (<0.5V) enables Pulse Skip for lowest output ripple, and mid-level (~VIN/2) forces continuous conduction mode for fixed-frequency noise filtering. This pin directly controls trade-offs between efficiency and EMI.
Can the LTC3417EDHC#TRPBF operate with only one channel enabled?
Yes, the LTC3417EDHC#TRPBF supports independent channel control via RUN1 and RUN2 pins. Either channel can be disabled while the other remains active - for example, RUN1 high and RUN2 low enables only the 1.4A regulator. In this half-active state, total quiescent current drops to 260–400μA, and PGOOD reflects only the enabled channel's regulation status.
LTC3417EDHC#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-WFDFN 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):
- 2.25V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 800mA, 1.4A
- Frequency - Switching:
- 1.5MHz, 600kHz ~ 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-DFN (5x3)
LTC3417EDHC#TRPBF FAQ
1.How can I place an order for LTC3417EDHC#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3417EDHC#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 LTC3417EDHC#TRPBF reliable?
The price and inventory of LTC3417EDHC#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3417EDHC#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3417EDHC#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3417EDHC#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3417EDHC#TRPBF?
LTC3417EDHC#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3417EDHC#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 LTC3417EDHC#TRPBF?
For technical support, including LTC3417EDHC#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3417EDHC#TRPBF requirements.
6.How does Aetrix verify that LTC3417EDHC#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3417EDHC#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 LTC3417EDHC#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3417EDHC#TRPBF?
All LTC3417EDHC#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3417EDHC#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 LTC3417EDHC#TRPBF part is unused and in its original packaging.
Return procedure for LTC3417EDHC#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3417EDHC#TRPBF Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
