My Inquiry
My Account
Analog Devices Inc. LTC1700EMS#TRPBF
- Part No.:
- LTC1700EMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1700EMS#TRPBF.pdf
- Description:
- IC REG CTRLR BOOST 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,076
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC1700EMS#TRPBF from Analog Devices (formerly Linear Technology) is a current-mode synchronous step-up DC/DC controller driving external N-channel and P-channel MOSFETs. It operates at 530 kHz nominal frequency, achieves up to 95% efficiency, supports start-up from as low as 0.9 V input, and delivers ±1.5% output voltage accuracy-used in battery-powered RF transceivers requiring compact, high-efficiency boost conversion.
For engineers reviewing the LTC1700EMS#TRPBF datasheet, LTC1700EMS#TRPBF pinout, LTC1700EMS#TRPBF application, or LTC1700EMS#TRPBF equivalent, key selection considerations include its No RSENSE™ current sensing, OPTI-LOOP® compensation, Burst Mode® operation for light-load efficiency, 10-lead MSOP package, and synchronization range of 400–750 kHz.
Technical Context
The LTC1700EMS#TRPBF implements constant-frequency current-mode control with internal slope compensation active above 5% duty cycle to prevent subharmonic oscillation. It senses inductor current via VDS of the main N-MOSFET, eliminating external sense resistors.
Its dual-gate drive architecture delivers precise timing: TG drives the synchronous P-MOSFET with 0–VOUT swing, BG drives the N-MOSFET with identical swing, and dead-time control (66–90 ns high-side, 88–110 ns low-side) prevents shoot-through. Overvoltage protection shuts off both MOSFETs if output exceeds regulated value by >5%.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Frequency | 530 kHz nominal; enables use of small surface-mount inductors (e.g., 1.8 µH) and reduces filter component size. |
| Start-Up Voltage | 0.9 V minimum; allows operation directly from single-cell Li-ion or NiMH batteries during cold start. |
| Output Accuracy | ±1.5% over temperature; ensures stable 3.3 V or 5 V rail generation without post-regulation. |
| Quiescent Current | 200 µA in normal mode; minimizes standby power loss in always-on wireless modems. |
| Shutdown Current | 10 µA; supports ultra-low-power sleep states in cellular handsets and IoT endpoints. |
| Duty Cycle Limit | 90% maximum; prevents inductor saturation and guarantees energy transfer to output capacitor each cycle. |
| Synchronization Range | 400–750 kHz; allows EMI reduction via clock alignment with system master clock or noise-sensitive receivers. |
Pinout & Package
Package: 10-lead MSOP (3 mm × 3 mm, 0.5 mm pitch), thermally enhanced with exposed pad (θJA = 150°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SGND (1) | Small-signal ground reference | Must be routed separately from PGND to avoid noise coupling into feedback loop. |
| ITH (2) | Error amplifier output / current limit threshold control | Voltage sets peak inductor current; clamped during soft-start to limit inrush. |
| VFB (3) | Feedback input | Monitors resistor divider output; regulates VOUT to 1.205 V reference with ±1.5% accuracy. |
| RUN/SS (4) | Soft-start and enable control | Pulling below 1.08 V disables regulator; external capacitor sets ramp time (~0.45 s/µF). |
| SYNC/MODE (5) | Frequency sync input / Burst Mode enable | ≥1.2 V enables Burst Mode; external 400–750 kHz CMOS clock forces synchronization and disables Burst Mode. |
| TG (6) | Top gate driver output | Drives P-channel MOSFET source-to-drain; swing 0–VOUT, rise/fall <100 ns (CL = 3000 pF). |
| VOUT (7) | Output supply and current reversal comparator input | Provides bias for internal circuitry and serves as reference for current reversal detection. |
| BG (8) | Bottom gate driver output | Drives N-channel MOSFET source-to-drain; swing 0–VOUT, rise/fall <100 ns (CL = 3000 pF). |
| PGND (9) | Power ground for gate drivers | Connects to cathode of output capacitor and source of N-MOSFET; critical for accurate VDS sensing. |
| SW (10) | Switch node connection | Interfaces with VDS sense amplifier and current reversal comparator; connects to drain of internal start-up MOSFET. |
Key Features
| Feature | Design Value |
|---|---|
| No RSENSE™ current sensing | Eliminates power loss and board space of external sense resistor; maintains >90% efficiency at full load using VDS of main N-MOSFET. |
| OPTI-LOOP® compensation | Minimizes required output capacitance (e.g., 330 µF POSCAP + 10 µF ceramic suffices); simplifies stability design across wide COUT ranges. |
| Selectable Burst Mode® | Reduces light-load quiescent current to ~179 µA and improves efficiency below 10 mA output; disabled automatically during sync operation. |
| 0.9 V start-up capability | Enables direct regulation from depleted single-cell batteries without auxiliary LDO or charge pump. |
| Integrated overvoltage protection | Shuts off both external MOSFETs if output exceeds 1.205 V × 1.05 = ~1.265 V; prevents damage to downstream 3.3 V logic. |
Applications
| Cellular Telephones | Wireless Modems |
|---|---|
Use Scenario: Boosting 3.3 V rail from 3.6 V Li-ion battery to power RF power amplifier stages during transmission bursts. IC Role / Device Role / Timing Role: Synchronous step-up controller managing external Si9804/Si9803 MOSFET pair with 530 kHz switching to minimize EMI near GSM/UMTS bands. Use Value: Achieves 95% peak efficiency and <10 µA shutdown current, extending talk time and enabling fast wake-from-sleep transitions. | Use Scenario: Generating stable 5 V supply from 2.7–4.2 V battery input for USB-hosted LTE/Wi-Fi modules in portable hotspots. IC Role / Device Role / Timing Role: Current-mode controller with SYNC/MODE pin synchronized to baseband processor clock (480 kHz) to suppress conducted emissions. Use Value: Eliminates need for external current sense resistor and reduces BOM count by two passive components versus resistor-based controllers. |
| RF Communications | Battery-Powered Equipment |
Use Scenario: Powering 2.5 V low-noise amplifier (LNA) and mixer stages in handheld spectrum analyzers operating from 2×AA alkaline cells. IC Role / Device Role / Timing Role: Step-up controller with Burst Mode enabled to maintain >85% efficiency at 1 mA load while minimizing idle current draw. Use Value: Delivers ±1.5% output accuracy across –40°C to +85°C, ensuring consistent gain and noise figure in RF front-end. | Use Scenario: Providing regulated 3.3 V supply for microcontroller, sensors, and BLE radio in medical wearable patches powered by coin-cell batteries. IC Role / Device Role / Timing Role: High-efficiency boost converter with 0.9 V start-up and 10 µA shutdown, enabling operation down to 0.95 V battery voltage. Use Value: Extends usable battery life by >30% compared to resistor-sense alternatives due to No RSENSE™ architecture and micropower shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-up controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3531EMS#TRPBF | Higher integration: includes internal 1.5 A N-MOSFET and 1.2 A P-MOSFET; fixed 1.25 V reference; no SYNC pin. | Not suitable for >1.5 A loads or custom MOSFET selection; lacks frequency synchronization for EMI control. | Choose LTC3531EMS#TRPBF only when board space is constrained and load ≤1.5 A; LTC1700EMS#TRPBF retains flexibility for higher-current or noise-sensitive designs. |
| TPS61088RHLR | Fixed 500 kHz frequency; integrated MOSFETs; 2.7–12 V input; no Burst Mode; uses external resistor for current limit. | Cannot start below 2.7 V; lacks 0.9 V cold-start capability and programmable sync range. | TPS61088RHLR fits cost-sensitive, medium-current applications where input never drops below 2.7 V; LTC1700EMS#TRPBF remains preferred for ultra-low-VIN and EMI-controlled systems. |
Compared with LTC3531EMS#TRPBF and TPS61088RHLR, the LTC1700EMS#TRPBF uniquely combines sub-1 V start-up, external MOSFET control for thermal/power scalability, and 400–750 kHz synchronization-making it optimal for high-performance, battery-critical RF and portable instrumentation.
Availability
LTC1700EMS#TRPBF is available at Aetrix Electronics and suitable for cellular telephones, wireless modems, RF communications equipment, and battery-powered medical wearables requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for LTC1700EMS#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors.
The LTC1700EMS#TRPBF belongs to Linear's legacy high-efficiency DC/DC controller family, designed specifically for battery-powered RF and portable systems demanding ultra-low start-up voltage, precision regulation, and minimal quiescent power.
FAQ
What is the minimum input voltage required for the LTC1700EMS#TRPBF to begin operation?
The LTC1700EMS#TRPBF features a dedicated start-up circuit that activates at input voltages as low as 0.9 V, allowing it to initiate regulation from nearly depleted single-cell batteries. This start-up mode operates at ~210 kHz until the output reaches 2.3 V, at which point the main control loop engages. The LTC1700EMS#TRPBF is specified for full functionality above 2.3 V input, but its 0.9 V start-up capability is a defining feature for battery longevity in portable devices.
Does the LTC1700EMS#TRPBF require an external current sense resistor?
No, the LTC1700EMS#TRPBF uses No RSENSE™ technology, sensing inductor current by monitoring the VDS voltage drop across the external main N-channel MOSFET. This eliminates power loss, board space, and cost associated with a discrete sense resistor while maintaining high efficiency across load range. The LTC1700EMS#TRPBF's current limit is set internally based on a maximum sensed voltage of 78 mV, corresponding to IPK = 78 mV / RDS(ON).
How does the SYNC/MODE pin function on the LTC1700EMS#TRPBF?
The SYNC/MODE pin on the LTC1700EMS#TRPBF serves three roles: (1) applying ≥1.2 V enables Burst Mode® for improved light-load efficiency; (2) grounding or pulling low disables Burst Mode; (3) applying a 400–750 kHz CMOS-compatible clock synchronizes the internal oscillator and disables Burst Mode. The LTC1700EMS#TRPBF will not lock to frequencies outside this range, and attempting to do so may cause erratic operation.
What is the purpose of the ITH pin on the LTC1700EMS#TRPBF?
The ITH pin on the LTC1700EMS#TRPBF is the output of the error amplifier and directly controls the peak inductor current. Its voltage sets the current limit threshold for the main N-MOSFET. During soft-start, the LTC1700EMS#TRPBF clamps ITH at ~5% of full scale to limit inrush; during normal operation, ITH varies dynamically to maintain regulation. OPTI-LOOP® compensation components connect here to stabilize the control loop across diverse output capacitor types.
Can the LTC1700EMS#TRPBF be used in applications requiring overvoltage protection?
Yes, the LTC1700EMS#TRPBF includes integrated overvoltage protection that triggers when the output exceeds the regulated voltage by approximately 5% (i.e., ~1.265 V relative to the 1.205 V reference). Upon trip, both external MOSFETs are forced off until the fault condition clears. This protects downstream 3.3 V or 5 V logic circuits and complements external protection schemes without requiring additional ICs. The LTC1700EMS#TRPBF's OVP is inherent to its architecture and requires no external components.
LTC1700EMS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Type:
- Transistor Driver
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Number of Outputs:
- 1
- Output Phases:
- 1
- Voltage - Supply (Vcc/Vdd):
- 0.9V ~ 6V
- Frequency - Switching:
- 530kHz
- Duty Cycle (Max):
- 88%
- Synchronous Rectifier:
- Yes
- Clock Sync:
- Yes
- Serial Interfaces:
- -
- Control Features:
- Enable, Soft Start
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
LTC1700EMS#TRPBF FAQ
1.How can I place an order for LTC1700EMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1700EMS#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 LTC1700EMS#TRPBF reliable?
The price and inventory of LTC1700EMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1700EMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1700EMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1700EMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1700EMS#TRPBF?
LTC1700EMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1700EMS#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 LTC1700EMS#TRPBF?
For technical support, including LTC1700EMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1700EMS#TRPBF requirements.
6.How does Aetrix verify that LTC1700EMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1700EMS#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 LTC1700EMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1700EMS#TRPBF?
All LTC1700EMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1700EMS#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 LTC1700EMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC1700EMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC1700EMS#TRPBF Tags
-
UCC28C45DR
Texas Instruments
-
UCC28C40DR
Texas Instruments
-
UCC28C43DR
Texas Instruments
-
ZXSC410E6TA
Diodes Incorporated
-
LM3524DMX/NOPB
Texas Instruments
-
LM3489MMX/NOPB
Texas Instruments
-
MIC2102YML-TR
Microchip Technology
-
LM5148RGYR
Texas Instruments
-
TL598CDR
Texas Instruments
-
LM5155DSSR
Texas Instruments
-
LM25085MYX/NOPB
Texas Instruments
-
UCC2813DTR-0
Texas Instruments
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…
