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Analog Devices Inc. LT1930AES5#TRMPBF
- Part No.:
- LT1930AES5#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LT1930AES5#TRMPBF.pdf
- Description:
- IC REG BST FLYBACK ADJ TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,067
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Product details
Overview
LT1930AES5#TRMPBF from Analog Devices (formerly Linear Technology) is a 2.2MHz, 1A step-up DC/DC converter in a 5-lead ThinSOT package, featuring 36V internal switch, 1.255V feedback reference, and 75% max duty cycle. It delivers 12V at 250mA from a 5V input for compact bias supplies in portable electronics.
For engineers reviewing the LT1930AES5#TRMPBF datasheet, LT1930AES5#TRMPBF pinout, LT1930AES5#TRMPBF application, or LT1930AES5#TRMPBF equivalent, key selection criteria include switching frequency (2.2MHz), output voltage capability (up to 34V), shutdown current (<1µA), and compatibility with ceramic output capacitors in space-constrained boost designs.
Technical Context
The LT1930AES5#TRMPBF implements a constant-frequency, current-mode PWM architecture with internal 1A/36V NPN switch and 1.255V precision reference. Its 2.2MHz oscillator enables use of sub-5µH inductors and low-profile ceramic capacitors, reducing solution footprint versus lower-frequency alternatives.
It supports boost, SEPIC, and flyback topologies with 2.45V–16V input range and 75% maximum duty cycle. The device integrates overcurrent protection, thermal shutdown, and <1µA shutdown current-critical for battery-powered systems requiring ultra-low quiescent operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 2.2MHz - enables use of 2.2µH–4.7µH inductors and reduces required output capacitance by ~2× vs 1.2MHz parts |
| Max Output Voltage | 34V - supports high-voltage bias rails for TFT-LCD, xDSL, and industrial sensors |
| Feedback Reference | 1.255V ±15mV - sets output via external resistor divider; enables precise 5V, 12V, or 24V regulation |
| Input Voltage Range | 2.45V to 16V - accommodates single Li-ion, multi-cell alkaline, or 5V/12V system rails |
| Switch VCE(SAT) | 400mV at 1A - minimizes conduction loss in high-current boost stages |
| Shutdown Current | <1µA - preserves battery life in always-on or sleep-mode applications |
| Max Duty Cycle | 75% - constrains usable input-to-output voltage ratio in boost mode (e.g., limits 5V→24V without discontinuous mode) |
Pinout & Package
LT1930AES5#TRMPBF is housed in a 5-lead ThinSOT (S5) package-0.95mm height, 2.80–3.10mm length, 1.90mm width-with exposed pad not connected internally. Pin 1 (SW) carries high di/dt switching node; Pin 2 (GND) requires direct connection to local ground plane; Pin 3 (FB) senses regulated output via resistive divider; Pin 4 (SHDN) enables/disables operation above 2.4V; Pin 5 (VIN) accepts input supply with local 1–4.7µF ceramic bypass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pin 1) | Switch Collector Node | Connects to inductor and Schottky diode anode; trace area must be minimized to reduce EMI radiation |
| GND (Pin 2) | Power Ground Reference | Tie directly to local ground plane; serves as return path for switch current and FB reference |
| FB (Pin 3) | Feedback Input | Compares divided output voltage to 1.255V reference; sets regulation point via R1/R2 divider |
| SHDN (Pin 4) | Enable/Shutdown Control | Drive ≥2.4V to enable; ≤0.5V to disable; max 10V rating requires series resistor if VIN >10V |
| VIN (Pin 5) | Main Power Input | Accepts 2.45–16V; requires local 1–4.7µF X5R/X7R ceramic capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| 2.2MHz Fixed-Frequency Operation | Enables use of 2.2µH–4.7µH chip inductors and 2.2–10µF ceramic output caps-reducing solution area to <0.1 in² |
| 36V Internal NPN Switch | Supports 34V output in boost and flyback configurations; eliminates need for external high-voltage switch |
| 1.255V Precision Feedback Reference | ±15mV tolerance over temperature enables stable 5V/12V/24V outputs without trimming |
| Low Shutdown Current <1µA | Extends battery runtime in standby modes for medical, handheld, and IoT edge devices |
| Current-Mode PWM Architecture | Provides inherent cycle-by-cycle current limiting and predictable transient response with minimal output overshoot |
Applications
| TFT-LCD Bias Supply | Digital Camera Power |
|---|---|
Use Scenario: Generating +9V, –9V, and +18V rails from 3.3V for active matrix LCD panels in portable displays. IC Role / Device Role / Timing Role: Primary boost controller implementing triple-output SEPIC-derived topology with soft-start sequencing. Use Value: Enables compact, low-noise bias generation using only one IC and three small inductors-replacing discrete transformer-based solutions. | Use Scenario: Providing 5V at 450mA from a 3.3V Li-ion battery to power CCD/CMOS image sensors and flash LEDs. IC Role / Device Role / Timing Role: High-efficiency step-up regulator operating at 2.2MHz to minimize inductor size and board area. Use Value: Achieves >85% peak efficiency at 3.3V→5V conversion, extending camera runtime while fitting within tight 5mm × 5mm PCB envelopes. |
| xDSL Line Card Power | Medical Diagnostic Equipment |
Use Scenario: Generating isolated 12V and –12V supplies from 5V for ADSL/VDSL line drivers and analog front-ends. IC Role / Device Role / Timing Role: Dual-output boost/SEPIC controller supporting coupled-inductor designs with fast transient response. Use Value: Delivers clean, low-ripple outputs compatible with sensitive DSL PHYs-meeting ETSI Class B conducted emission limits without added filtering. | Use Scenario: Creating 24V at 90mA from 5V for piezoelectric transducers and sensor bias in portable ultrasound probes. IC Role / Device Role / Timing Role: High-voltage boost converter with 34V output capability and robust overcurrent protection. Use Value: Meets IEC 60601-1 creepage/clearance requirements via compact layout and low EMI-reducing need for shielding or spacing. |
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 |
|---|---|---|---|
| LT1930ES5#TRMPBF | 1.2MHz switching frequency; 84% max duty cycle; higher peak efficiency but larger inductor requirement | Better suited for 5V→24V or high-current (>300mA) boost where efficiency >85% is critical | Select LT1930ES5#TRMPBF when minimizing power loss outweighs board area constraints |
| LT1613ES5#TRMPBF | 1.4MHz frequency; 500mA output capability; no 36V switch-max output limited to ~15V | Targeted at lower-voltage, lower-power applications like PC cards or modems requiring only 5V/200mA | Choose LT1613ES5#TRMPBF for cost-sensitive, <15V output designs where 250mA is sufficient |
Compared with LT1930ES5#TRMPBF and LT1613ES5#TRMPBF, the LT1930AES5#TRMPBF trades ~2–3% peak efficiency for significantly smaller magnetics and reduced solution footprint-making it optimal for space-limited, medium-voltage (12–24V) portable applications.
Availability
LT1930AES5#TRMPBF is available at Aetrix Electronics and suitable for TFT-LCD bias supplies, digital camera power modules, xDSL line cards, and portable medical diagnostic equipment requiring stable component supply across production lifecycles.
Supply support for LT1930AES5#TRMPBF 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 its high-performance analog and power management portfolio with rigorous automotive and industrial qualification standards.
The LT1930/LT1930A family was designed specifically for compact, high-efficiency boost and SEPIC converters in battery-powered and space-constrained applications-emphasizing high switching frequency, integrated 36V switch, and low quiescent current.
FAQ
What is the maximum output voltage achievable with the LT1930AES5#TRMPBF?
The LT1930AES5#TRMPBF supports up to 34V output in boost configuration due to its internal 36V-rated NPN switch. This is confirmed in the Absolute Maximum Ratings table (SW voltage: –0.4V to 36V) and validated in typical applications including 5V→24V and 3.3V→30V designs. Output voltage is set externally via the FB resistor divider, with stability maintained up to the 34V limit under load.
Does the LT1930AES5#TRMPBF require an external Schottky diode, and what specifications are critical?
Yes, the LT1930AES5#TRMPBF requires an external Schottky diode connected between SW and VOUT. Critical specs include 30V+ reverse voltage rating (e.g., MBR0530 for 24V outputs), 0.5A+ average forward current, and low forward voltage (<0.4V) to maintain efficiency. The datasheet explicitly recommends ON Semiconductor MBR0520 (20V), MBR0530 (30V), or Microsemi UPS5817 (1A) based on output voltage and current requirements.
Can the LT1930AES5#TRMPBF be used in SEPIC topology, and what design considerations apply?
Yes, the LT1930AES5#TRMPBF supports SEPIC operation, as confirmed in the Applications Information section and demonstrated in Figure TA02 (4-cell to 5V SEPIC). Key considerations include using two coupled or uncoupled inductors rated for ≥1A saturation current, selecting low-ESR ceramic output capacitors (e.g., 10µF X5R), and ensuring the FB divider is referenced to the correct output rail. The 36V switch rating accommodates the combined input/output voltage stress inherent in SEPIC.
What is the recommended input capacitor for the LT1930AES5#TRMPBF, and why?
The recommended input capacitor for the LT1930AES5#TRMPBF is a 1µF–4.7µF X5R or X7R ceramic capacitor placed adjacent to the VIN pin. This is specified in the Applications Information section and supported by layout guidance in Figure F06. Ceramic capacitors provide low ESR and high-frequency decoupling essential for stable 2.2MHz operation; X5R dielectric ensures stable capacitance across voltage and temperature, preventing regulation drift during load transients.
How does the LT1930AES5#TRMPBF handle overcurrent conditions?
The LT1930AES5#TRMPBF incorporates cycle-by-cycle current limiting that monitors switch current continuously. When the sensed current reaches the typical limit of 1.2A (min 1A, max 2.5A per Electrical Characteristics table), the SR latch resets immediately-turning off the switch regardless of PWM comparator state. This protects both the internal transistor and external components during short-circuit or overload events, as detailed in the Operation section and block diagram.
LT1930AES5#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, Flyback, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.45V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 2.45V
- Voltage - Output (Max):
- 36V (Switch)
- Current - Output:
- 1A (Switch)
- Frequency - Switching:
- 2.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
LT1930AES5#TRMPBF FAQ
1.How can I place an order for LT1930AES5#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1930AES5#TRMPBF 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 LT1930AES5#TRMPBF reliable?
The price and inventory of LT1930AES5#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1930AES5#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT1930AES5#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1930AES5#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1930AES5#TRMPBF?
LT1930AES5#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1930AES5#TRMPBF 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 LT1930AES5#TRMPBF?
For technical support, including LT1930AES5#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1930AES5#TRMPBF requirements.
6.How does Aetrix verify that LT1930AES5#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT1930AES5#TRMPBF 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 LT1930AES5#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT1930AES5#TRMPBF?
All LT1930AES5#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1930AES5#TRMPBF, 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 LT1930AES5#TRMPBF part is unused and in its original packaging.
Return procedure for LT1930AES5#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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