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Analog Devices Inc. LT1610CMS8#TRPBF
- Part No.:
- LT1610CMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LT1610CMS8#TRPBF.pdf
- Description:
- IC REG BST SEPIC ADJ 450MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,217
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Product details
Overview
LT1610CMS8#TRPBF from Analog Devices (formerly Linear Technology) is a micropower, fixed-frequency step-up DC/DC converter optimized for single-cell battery operation. It operates from input voltages as low as 1.0 V, delivers up to 28 V output, switches at 1.7 MHz, and achieves 3 V at 30 mA from a 1 V supply - ideal for space-constrained portable electronics requiring high efficiency at light loads.
For engineers reviewing the LT1610CMS8#TRPBF datasheet, LT1610CMS8#TRPBF pinout, LT1610CMS8#TRPBF application, or LT1610CMS8#TRPBF equivalent, key selection criteria include minimum input voltage (1.0 V), quiescent current (30 µA), burst-mode operation, internal compensation capability, and MSOP-8 package compatibility with high-density PCB layouts.
Technical Context
The LT1610CMS8#TRPBF implements a current-mode PWM architecture with integrated NPN power switch (300 mV VCE(SAT) at 300 mA) and automatic Burst Mode™ operation below ~1 mA load. Its 1.7 MHz switching frequency enables use of sub-5 mm inductors and ceramic capacitors while maintaining >70% efficiency across 0.1–100 mA loads.
It features an internally compensated error amplifier (VC pin), programmable feedback reference (1.23 V ±3%), and shutdown control with <1 µA leakage. The device supports boost, SEPIC, and inverting topologies via external component configuration and includes built-in current limiting (450–900 mA) and thermal protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.0 V to 8.0 V - enables direct operation from single alkaline, NiMH, or Li-ion cells without pre-regulation. |
| Switching Frequency | 1.7 MHz (typ.) - allows use of 4.7 µH inductors and 22 µF tantalum or ceramic output capacitors in compact layouts. |
| Quiescent Current | 30 µA (typ.) - extends battery life in always-on, low-duty-cycle applications like remote sensors or backup systems. |
| Feedback Reference | 1.23 V (±2.5%) - sets output voltage via resistor divider (e.g., 3.3 V = 1.23 V × (1 + R1/R2)), enabling precise regulation without external references. |
| Output Voltage Range | Up to 28 V - supports LCD bias, white LED drivers, and auxiliary rails in portable instrumentation. |
| Shutdown Current | <1 µA - ensures near-zero power drain during system sleep, critical for energy-harvesting and coin-cell-powered devices. |
| Switch VCE(SAT) | 300 mV at 300 mA - minimizes conduction loss and improves efficiency in high-current boost stages. |
Pinout & Package
LT1610CMS8#TRPBF is housed in an 8-lead MSOP (MS8) package, 3.0 mm × 3.0 mm × 0.85 mm, with exposed pad for thermal enhancement. Pin pitch is 0.5 mm; recommended reflow profile complies with JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC (Pin 1) | Error amplifier output | Connects to internal compensation network (via COMP) or external RC for loop stability tuning; sensitive node requiring short trace routing. |
| FB (Pin 2) | Feedback input | Monitors regulated output via resistive divider; 1.23 V reference enables accurate output setting; minimize parasitic capacitance here. |
| SHDN (Pin 3) | Enable/disable control | Logic-high (>1 V) enables operation; grounded disables converter and reduces supply current to <1 µA. |
| PGND (Pin 4) | Power ground return | Carries high-frequency switch current; must connect directly to local ground plane with low-inductance path to minimize EMI. |
| SW (Pin 5) | Switch node | Drives external inductor/diode; high dv/dt node requiring minimized trace area and proximity to PGND for EMI control. |
| VIN (Pin 6) | Main input supply | Accepts 1.0–8.0 V; requires local 22 µF bypass capacitor placed adjacent to pin to suppress switching noise. |
| GND (Pin 7) | Signal ground reference | Reference for internal circuitry (excluding switch current); tie to same ground plane as PGND at single point to avoid ground loops. |
| COMP (Pin 8) | Internal compensation node | Tie to VC for internal RC compensation (50 kΩ/50 pF); leave floating if using external RC network on VC-to-ground. |
Key Features
| Feature | Design Value |
|---|---|
| Burst Mode™ operation | Maintains >75% efficiency down to 1 mA load by cycling on/off, reducing average quiescent current to 30 µA without output voltage droop. |
| Internally compensated architecture | Eliminates two external compensation components when COMP pin is tied to VC, reducing BOM count and board area in cost-sensitive designs. |
| Low-voltage start-up | Starts regulation from 1.0 V input - supports aging batteries and ultra-low-power wake-up circuits where supply may dip below 1.2 V. |
| High-efficiency NPN switch | 300 mV VCE(SAT) at 300 mA enables >85% peak efficiency in 1-cell-to-3.3 V configurations, outperforming many P-channel MOSFET-based alternatives. |
| Multi-topology support | Configurable as boost, SEPIC, or inverting converter using standard passive components - simplifies design reuse across voltage-up, voltage-down, and negative-rail applications. |
Applications
| Portable Medical Sensors | LCD Bias Generation |
|---|---|
Use Scenario: Wearable glucose monitor powered by a single AAA alkaline cell requiring stable 5 V rail for analog front-end and BLE radio. IC Role / Device Role / Timing Role: Step-up regulator generating 5 V @ 25 mA from 1.2–1.5 V input; operates in Burst Mode during sensor idle periods. Use Value: 30 µA quiescent current extends battery life beyond 12 months; 1.7 MHz switching avoids audible noise and eases EMI filtering. | Use Scenario: TFT LCD display in handheld industrial HMI needing +8 V, –8 V, and +24 V bias rails from 3.3 V system supply. IC Role / Device Role / Timing Role: Core switching controller in multi-output SEPIC-derived bias supply; drives coupled inductors and Schottky diodes. Use Value: High output voltage capability (up to 28 V) enables direct generation of AVDD and VON rails; internal compensation simplifies layout in tight display bezels. |
| Wireless Remote Controls | Supercapacitor Chargers |
Use Scenario: IR remote with RF wake-up using single AA cell; requires 3.3 V for MCU and 5 V for IR LED driver only during button press. IC Role / Device Role / Timing Role: Load-switched boost converter activated by SHDN signal; delivers 3.3 V @ 30 mA transiently with fast startup (<10 µs). Use Value: <1 µA shutdown current prevents battery drain during 99.9% idle time; 1.0 V start-up accommodates deeply discharged cells. | Use Scenario: Energy-harvesting node charging a 10 F supercapacitor from ambient light or vibration, targeting 4.5 V storage voltage. IC Role / Device Role / Timing Role: Constant-voltage charger with programmable output; uses FB divider and optional external transistor for current limiting. Use Value: Precise 1.23 V reference enables ±1% output accuracy; low quiescent current avoids self-discharge dominance during trickle-charge phases. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1307EMS8#TRPBF | 600 kHz switching, SO-8/MSOP-8; higher IQ (65 µA); no Burst Mode; lower max output voltage (20 V) | Better suited for medium-load continuous operation; less optimal for ultra-low-IQ battery lifetime-critical apps | Select when lower EMI is prioritized over minimum quiescent current or high-voltage output. |
| TPS61099YFFR | 1.8 MHz, 1.8 V–5.5 V input; 300 nA shutdown; integrated 1.2 A switch; no internal compensation | Superior for coin-cell (CR2032) applications; lacks SEPIC/inverting flexibility; requires external compensation | Prefer for new designs targeting lowest possible shutdown current and highest integration, accepting added compensation effort. |
Compared with LT1307EMS8#TRPBF and TPS61099YFFR, the LT1610CMS8#TRPBF uniquely balances ultra-low 30 µA quiescent current, 1.7 MHz high-frequency operation, internal compensation, and 28 V output capability - making it optimal for legacy or space-constrained single-cell systems where topology flexibility and long shelf life are essential.
Availability
LT1610CMS8#TRPBF is available at Aetrix Electronics and suitable for portable medical sensors, LCD bias supplies, wireless remotes, and supercapacitor chargers requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for LT1610CMS8#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 and maintains full product support, datasheet documentation, and application engineering for legacy Linear parts including the LT1610 series.
The LT1610 belongs to Linear's micropower DC/DC converter family, designed specifically for battery-powered portable equipment where minimal quiescent current, small solution size, and wide input voltage range are critical.
FAQ
What is the minimum input voltage required for LT1610CMS8#TRPBF to start regulation?
The LT1610CMS8#TRPBF starts regulation at 1.0 V (typical) across temperature, with guaranteed operation down to 1.25 V at –40°C. This enables reliable operation from nearly depleted single-cell alkaline, NiMH, or Li-ion sources. The device maintains regulation even as input drops further, though output current capability decreases proportionally - confirmed in Figure G01 and Absolute Maximum Ratings table.
Does LT1610CMS8#TRPBF support SEPIC topology, and what external components are required?
Yes, LT1610CMS8#TRPBF supports SEPIC topology, as demonstrated in Figures 4 and 14 of the datasheet. Required components include two coupled or uncoupled inductors (e.g., Murata LQH3C220), two 22 µF input/output capacitors, one 1 µF ceramic snubber capacitor, and a Schottky diode (e.g., MBR0520). The FB divider sets output voltage; no additional IC-level changes are needed.
Can LT1610CMS8#TRPBF be used with all-ceramic output capacitors, and what compensation adjustments are needed?
Yes, LT1610CMS8#TRPBF can operate with all-ceramic output capacitors, but internal compensation (COMP tied to VC) is unstable with low-ESR ceramics. As shown in Figures 11–12, external 220 kΩ/220 pF RC compensation on the VC pin is required to ensure adequate phase margin and prevent oscillation - especially at higher input voltages or temperatures.
What is the maximum continuous output current achievable with LT1610CMS8#TRPBF in a boost configuration?
In a standard boost configuration with 1.5 V input and 3.3 V output, LT1610CMS8#TRPBF delivers up to 30 mA continuously (Figure TA01). At higher inputs (e.g., 3.3 V → 5 V), output current reaches 200 mA (per Features list). Actual limit depends on thermal design, inductor saturation, and duty cycle - with switch current limit specified at 450–900 mA (typ./max) in Electrical Characteristics.
Is LT1610CMS8#TRPBF RoHS compliant and lead-free?
Yes, LT1610CMS8#TRPBF is RoHS compliant and lead-free. The "#TRPBF" suffix denotes tape-and-reel packaging with Pb-free (lead-free) finish per JEDEC J-STD-020. Package markings (LTDT) and ordering info in Package/Order Information section confirm compliance; no exemptions apply.
LT1610CMS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.9V
- Voltage - Input (Max):
- 8V
- Voltage - Output (Min/Fixed):
- 1.23V
- Voltage - Output (Max):
- 30V (Switch)
- Current - Output:
- 450mA (Switch)
- Frequency - Switching:
- 1.7MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LT1610CMS8#TRPBF FAQ
1.How can I place an order for LT1610CMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1610CMS8#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 LT1610CMS8#TRPBF reliable?
The price and inventory of LT1610CMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1610CMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1610CMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1610CMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1610CMS8#TRPBF?
LT1610CMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1610CMS8#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 LT1610CMS8#TRPBF?
For technical support, including LT1610CMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1610CMS8#TRPBF requirements.
6.How does Aetrix verify that LT1610CMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1610CMS8#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 LT1610CMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1610CMS8#TRPBF?
All LT1610CMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1610CMS8#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 LT1610CMS8#TRPBF part is unused and in its original packaging.
Return procedure for LT1610CMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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