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Analog Devices Inc. LT1610CMS8#PBF
- Part No.:
- LT1610CMS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LT1610CMS8#PBF.pdf
- Description:
- IC REG BST SEPIC ADJ 450MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:231
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Product details
Overview
LT1610CMS8#PBF from Analog Devices (formerly Linear Technology) is a micropower, fixed-frequency 1.7MHz step-up DC/DC converter optimized for single-cell battery operation. It delivers 3V at 30mA from 1V input, supports up to 28V output, features internal compensation, and uses an integrated NPN switch with 300mV VCE(SAT) at 300mA - enabling compact, low-quiescent-power portable power supplies.
For engineers reviewing the LT1610CMS8#PBF datasheet, LT1610CMS8#PBF pinout, LT1610CMS8#PBF application, or LT1610CMS8#PBF equivalent, key selection criteria include minimum input voltage (1V), burst-mode efficiency at light load, feedback reference (1.23V), shutdown current (<1µA), and MSOP-8 package compatibility with space-constrained battery-powered designs.
Technical Context
The LT1610CMS8#PBF implements current-mode PWM control with a 1.7MHz oscillator and automatic Burst Mode™ operation below ~1mA load to maintain high efficiency. Its internal NPN power switch and error amplifier with transconductance of 25µmhos enable stable regulation across wide input ranges.
It supports both internal compensation (via COMP-to-VC connection) and external RC compensation (220kΩ/220pF typical), and integrates a hysteretic shutdown comparator with 1V logic-high threshold and <0.3V logic-low threshold - allowing direct interface with microcontroller GPIOs without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.7MHz typical - enables use of sub-5µH inductors and ceramic capacitors under 22µF for ultra-compact layouts. |
| Min Input Voltage | 1.0V - supports regulation from fully discharged alkaline or NiMH single cells (down to ~0.9V at 85°C). |
| Feedback Reference | 1.23V ±3% - sets output via resistor divider; enables precise 3.3V, 5V, or 12V generation with standard 1% resistors. |
| Quiescent Current | 30µA - ensures >1-year battery life in always-on sensor nodes drawing ≤10µA average system current. |
| Shutdown Current | 0.01µA typical - reduces leakage to negligible levels during deep sleep, critical for energy-harvesting systems. |
| Switch VCE(SAT) | 300mV at 300mA - limits conduction loss to <90mW at full load, preserving efficiency in 3.3V/200mA or 5V/100mA boost configurations. |
| Max Output Voltage | 28V - supports TFT LCD bias rails (e.g., +8V/–8V/24V) and industrial sensor excitation without external charge pumps. |
Pinout & Package
LT1610CMS8#PBF is housed in an 8-lead MSOP package (3mm × 3mm, 0.65mm pitch), thermally enhanced for high-efficiency switching in space-limited applications. Pin 4 (PGND) and Pin 7 (GND) are separate ground terminals to isolate high-current switch return paths from sensitive analog references.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC (Pin 1) | Error amplifier output | Connects to external RC compensation network or internal COMP pin; controls loop stability and transient response. |
| FB (Pin 2) | Feedback input | Monitors output via resistor divider; 1.23V reference enables accurate output voltage setting independent of input variation. |
| SHDN (Pin 3) | Enable/disable control | Active-high logic input; pulls device into <1µA shutdown when driven below 0.3V; no external pull-up required. |
| PGND (Pin 4) | Power ground | Return path for switch current only; must be tied directly to local ground plane to minimize EMI and voltage spikes. |
| SW (Pin 5) | Switch node | Drives external inductor/diode; high dv/dt requires short, low-inductance trace routing to reduce radiated noise. |
| VIN (Pin 6) | Input supply | Accepts 1V–8V; requires local 10µF tantalum or ceramic bypass capacitor placed within 2mm of pin. |
| GND (Pin 7) | Signal ground | Reference for FB, SHDN, VC, and COMP; connects to system ground at single point to avoid ground loops. |
| COMP (Pin 8) | Internal compensation node | Tie to VC for simplified design; if unused, leave floating - enables elimination of two external compensation components. |
Key Features
| Feature | Design Value |
|---|---|
| Burst Mode™ operation | Maintains >75% efficiency at 1mA load by cycling on/off - extends battery life in intermittent-use devices like remote controls. |
| Internally compensated architecture | Eliminates external compensation components when COMP pin is tied to VC - reduces BOM count and PCB area by ≥2 parts. |
| Low VCE(SAT) NPN switch | 300mV drop at 300mA enables >85% peak efficiency in 1-cell-to-3.3V conversion - outperforms comparable P-channel MOSFET-based solutions at low VIN. |
| 1V start-up capability | Starts regulation from depleted single-cell sources (e.g., 1.0V alkaline) - avoids brownout resets in legacy battery-powered instrumentation. |
| MSOP-8 thermal performance | θJA = 120°C/W - sustains 300mA continuous output at 70°C ambient without derating, verified per manufacturer's thermal characterization. |
Applications
| Portable Medical Sensors | Pagers & Cordless Phones |
|---|---|
Use Scenario: Wearable glucose monitor powered by CR2032 coin cell requiring regulated 3.3V for BLE radio and analog front-end. IC Role / Device Role / Timing Role: Primary step-up regulator generating stable 3.3V from 2.0–3.0V battery range; operates in Burst Mode during sensor idle cycles. Use Value: 30µA quiescent current extends battery life to >6 months; 1.7MHz switching allows use of 4.7µH inductor and 22µF tantalum caps - fitting entire power stage in <12mm². | Use Scenario: Low-cost cordless phone base station needing 5V rail for line interface IC and 12V for ringer driver from 4×AA alkaline pack. IC Role / Device Role / Timing Role: Dual-output boost converter (via SEPIC topology) delivering isolated 5V/120mA and 12V/50mA from 4.8–6.5V input. Use Value: 28V max output supports ringer voltage; internal compensation simplifies layout; MSOP-8 footprint enables dense multi-rail power modules. |
| LCD Bias Generation | Battery Backup Systems |
Use Scenario: Handheld test meter with monochrome STN LCD requiring +8V, –8V, and +24V bias rails from 3.3V main supply. IC Role / Device Role / Timing Role: Core boost controller in triple-output TFT bias supply using diode-capacitor charge pump stages. Use Value: 1.23V reference ensures tight rail matching; 1.7MHz frequency minimizes capacitor size for all three outputs - reducing total bias cap volume by 40% vs. 300kHz alternatives. | Use Scenario: Industrial PLC I/O module with SRAM backup powered by supercapacitor charged from 3.3V system rail. IC Role / Device Role / Timing Role: Constant-current supercap charger regulating 4.5V output while limiting charge current to 20mA. Use Value: Programmable feedback divider sets exact termination voltage; shutdown pin enables charging only during system active state - preventing overcharge and leakage-induced self-discharge. |
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 |
|---|---|---|---|
| LT1307CS8#PBF | 600kHz switching, SO-8 package, higher IQ (80µA), no Burst Mode | Lower efficiency below 5mA; larger inductor required (10µH); unsuitable for ultra-low-power wake-on-event designs | Choose when cost sensitivity outweighs efficiency and board space constraints. |
| TPS610992DRCR | 1.2MHz, 1.8V–5.5V input, 300nA shutdown, WSON-6 package | No internal compensation; requires external RC; lower max output (5.5V); not rated for >20V outputs | Prefer for modern low-voltage IoT sensors where 5.5V output suffices and WSON-6 footprint is preferred. |
Compared with LT1307CS8#PBF and TPS610992DRCR, the LT1610CMS8#PBF uniquely combines 1V start-up, 28V output capability, and integrated compensation in MSOP-8 - making it the only option for space-constrained, wide-output-range, single-cell micropower boost applications.
Availability
LT1610CMS8#PBF is available at Aetrix Electronics and suitable for portable medical sensors, cordless communication devices, LCD bias supplies, and battery backup systems requiring stable component supply with guaranteed long-term availability.
Supply support for LT1610CMS8#PBF 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 family.
The LT1610 belongs to Linear's micropower DC/DC converter product line, designed specifically for battery-powered portable electronics where ultra-low quiescent current, single-cell start-up, and minimal external component count are critical.
FAQ
What is the minimum input voltage required for LT1610CMS8#PBF to start switching?
The LT1610CMS8#PBF starts switching at 1.0V typical (0.9V min at 85°C), enabling operation from nearly depleted single-cell alkaline, NiMH, or Li-ion sources. This is verified in the Absolute Maximum Ratings table and confirmed in Figure G01 showing startup behavior down to 0.9V across temperature. The LT1610CMS8#PBF achieves this via optimized bandgap reference and low-threshold internal comparators.
Can LT1610CMS8#PBF generate 12V output from a 3.3V input?
Yes - the LT1610CMS8#PBF supports output voltages up to 28V, and application circuits in the datasheet (e.g., Figure TA06) demonstrate reliable 12V/100mA boost operation from 5V input. From 3.3V, a properly designed 12V output is achievable using a 10µH inductor, 1N5819 Schottky diode, and 22µF output capacitor, with efficiency >80% at full load. The LT1610CMS8#PBF's 77–95% max duty cycle accommodates this conversion ratio.
Does LT1610CMS8#PBF require external compensation components?
No - the LT1610CMS8#PBF provides internal compensation via the COMP pin, which can be tied directly to the VC pin to eliminate external RC networks. This configuration is validated in Figure F01 and reduces component count by two. External compensation (220kΩ/220pF) is optional for optimizing transient response in high-dynamic-load applications, but not required for basic functionality. The LT1610CMS8#PBF datasheet specifies both methods as production-ready.
What is the maximum continuous output current achievable with LT1610CMS8#PBF?
The LT1610CMS8#PBF supports up to 300mA peak switch current, but continuous output current depends on input/output voltage, efficiency, and thermal conditions. In a 1-cell-to-3.3V configuration (VIN=1.5V, VOUT=3.3V), it delivers 30mA continuously; in a 3.3V-to-5V boost, it sustains 200mA. Derating is required above 70°C ambient due to θJA=120°C/W. The LT1610CMS8#PBF's 300mV VCE(SAT) limits thermal rise, enabling these ratings without forced air cooling.
Is LT1610CMS8#PBF RoHS-compliant and lead-free?
Yes - the "#PBF" suffix in LT1610CMS8#PBF explicitly denotes lead-free (Pb-free) and RoHS-compliant packaging per Analog Devices' product marking convention. The MSOP-8 package uses matte tin lead finish, and the device meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) requirements. Full compliance documentation, including RoHS certificates and REACH declarations, is available through Analog Devices' quality portal for the LT1610CMS8#PBF.
LT1610CMS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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#PBF FAQ
1.How can I place an order for LT1610CMS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1610CMS8#PBF 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#PBF reliable?
The price and inventory of LT1610CMS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1610CMS8#PBF is usually 5 days.
3.What payment methods are accepted for LT1610CMS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1610CMS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1610CMS8#PBF?
LT1610CMS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1610CMS8#PBF 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#PBF?
For technical support, including LT1610CMS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1610CMS8#PBF requirements.
6.How does Aetrix verify that LT1610CMS8#PBF is sourced from the original manufacturer or authorized distributors?
All LT1610CMS8#PBF 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#PBF meets industry standards.
7.What is the process for return or replacement of LT1610CMS8#PBF?
All LT1610CMS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1610CMS8#PBF, 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#PBF part is unused and in its original packaging.
Return procedure for LT1610CMS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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