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Analog Devices Inc. LT1930AES5#TRPBF
- Part No.:
- LT1930AES5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LT1930AES5#TRPBF.pdf
- Description:
- IC REG BST FLYBACK ADJ TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,818
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Product details
Overview
LT1930AES5#TRPBF from Analog Devices (formerly Linear Technology) is a high-efficiency, 2.2MHz step-up DC/DC converter in a 5-lead ThinSOT package, featuring an internal 1A/36V switch, 1.255V feedback reference, and shutdown current <1µA. It delivers 12V at 250mA from a 5V input and supports wide input range (2.6V–16V), making it suitable for compact TFT-LCD bias supplies and portable medical diagnostics.
For engineers reviewing the LT1930AES5#TRPBF datasheet, LT1930AES5#TRPBF pinout, LT1930AES5#TRPBF application, or LT1930AES5#TRPBF equivalent, key selection criteria include switching frequency (2.2MHz), maximum duty cycle (75%), output voltage capability up to 34V, and compatibility with low-profile ceramic inductors (e.g., 2.2µH–4.7µH) and Schottky diodes like MBR0520.
Technical Context
The LT1930AES5#TRPBF implements a constant-frequency, current-mode PWM architecture with internal compensation, enabling predictable noise performance and stable regulation across line and load variations. Its 2.2MHz oscillator allows use of ultra-small passive components while maintaining robust transient response via adjustable phase-lead compensation.
It integrates a 36V-rated NPN switch with 400mV typical VCE(SAT) at 1A, supporting boost, SEPIC, and flyback topologies. The 1.255V precision feedback reference (±1.5% over temperature) enables accurate output voltage setting via external resistor dividers, with FB pin bias current as low as 120nA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 2.2MHz - Enables use of sub-3mm inductors (e.g., Murata LQH3C2R2M24) and reduces solution footprint by ~50% vs 1.2MHz parts. |
| Feedback Voltage | 1.255V ±1.5% - Sets output accuracy; VOUT = 1.255V × (1 + R1/R2); enables precise 5V, 12V, or 24V generation. |
| Input Voltage Range | 2.6V to 16V - Supports single Li-ion (2.7–4.2V), 4-cell alkaline (4–6.5V), or industrial 5V/12V rails without pre-regulation. |
| Max Output Voltage | 34V - Allows direct generation of TFT-LCD VPOS/VNEG rails (e.g., ±9V, +18V) and xDSL line drivers. |
| Switch Current Limit | 1.2A typical - Limits peak inductor current to protect internal transistor and external components during overload or short-circuit. |
| Shutdown Current | <1µA - Enables battery-backed systems (e.g., medical sensors) to maintain >1-year shelf life on coin cells. |
| Package | 5-Lead ThinSOT (S5) - 1mm height, 2.8mm × 1.6mm footprint; compatible with standard SOT-23 pick-and-place and reflow profiles. |
Pinout & Package
LT1930AES5#TRPBF is housed in a 5-lead plastic ThinSOT (S5) package - identical pinout and footprint to industry-standard SOT-23 but with reduced height (1.0mm max) and tighter dimensional tolerances per LTC DWG #05-08-1635.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SW | Switch Collector | Connects to inductor/diode node; high dv/dt requires minimized trace area to reduce EMI radiation. |
| 2 - GND | Power Ground | Must tie directly to local ground plane; serves as return path for switch current and feedback reference. |
| 3 - FB | Feedback Input | Senses resistive divider output; 1.255V reference sets regulation point; sensitive to noise - keep traces short and away from SW. |
| 4 - SHDN | Enable/Shutdown Control | Logic-high ≥2.4V enables operation; ≤0.5V disables with <1µA quiescent draw; max rating 10V - series resistor required if VIN >10V. |
| 5 - VIN | Input Supply | Accepts 2.6–16V; requires local 2.2µF ceramic bypass capacitor placed within 2mm of pin to suppress high-frequency ripple. |
Key Features
| Feature | Design Value |
|---|---|
| High-Frequency Operation | 2.2MHz switching enables use of 2.2µH–4.7µH chip inductors (e.g., Sumida CR43-2R2), reducing solution area to <0.1 in². |
| Precision Feedback Reference | 1.255V ±1.5% over –40°C to +85°C ensures stable output voltage across industrial temperature range without calibration. |
| Low-Profile ThinSOT Package | 1mm height and 2.8mm × 1.6mm footprint allow integration into space-constrained portable devices (e.g., digital cameras, PC Cards). |
| Integrated 36V Switch | Internal NPN transistor rated for 36V VCEO supports 34V boost outputs and SEPIC/flyback topologies without external HV transistors. |
| Ultra-Low Shutdown Current | <1µA shutdown draw extends battery life in always-on monitoring applications such as handheld diagnostic equipment. |
Applications
| TFT-LCD Bias Supply | Digital Camera Power |
|---|---|
Use Scenario: Generating ±9V and +18V rails from a 3.3V supply for active matrix LCD panel driving in portable displays. IC Role / Device Role / Timing Role: Primary boost controller implementing triple-output topology with soft-start via external RC network (RSS/CSS). Use Value: Eliminates need for custom transformers or discrete charge pumps; achieves regulated outputs with <50mV ripple using X5R ceramics and MBR0520 diodes. | Use Scenario: Providing 5V/450mA from a 3.3V Li-poly battery to power CCD sensor and image processor in compact digital cameras. IC Role / Device Role / Timing Role: High-efficiency step-up regulator operating in continuous conduction mode with 2.2MHz PWM control. Use Value: Enables 90% peak efficiency at 300mA load, extending capture time per charge; small 2.2µH inductor fits within 8mm × 8mm camera module envelope. |
| Medical Diagnostic Equipment | xDSL Line Power |
Use Scenario: Delivering isolated 5V/300mA and 12V/250mA outputs from a 4-cell alkaline pack (4–6.5V) in portable ultrasound or glucose meters. IC Role / Device Role / Timing Role: Main DC/DC converter in battery-powered medical subsystem requiring low EMI and long shelf life. Use Value: Sub-1µA shutdown current preserves battery capacity during standby; 1.255V reference ensures consistent ADC reference voltage accuracy across temperature. | Use Scenario: Generating +12V/250mA and –12V/100mA for DSL line driver ICs in residential gateway modems powered from 5V USB or wall adapter. IC Role / Device Role / Timing Role: Dual-rail boost controller supporting split-rail analog circuitry with independent output disconnect capability. Use Value: Replaces bulkier discrete solutions; 34V output headroom accommodates line surge transients without overvoltage protection circuitry. |
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#TRPBF | 1.2MHz switching frequency; 84% max duty cycle; higher efficiency at medium loads; larger inductor requirement (4.7µH–10µH). | Better suited for 5V→24V boost (duty cycle 79.2%) where LT1930AES5#TRPBF's 75% limit forces discontinuous mode. | Select LT1930ES5#TRPBF when output voltage ratio demands higher duty cycle or peak efficiency is prioritized over board area. |
| LT1613ES5#TRPBF | 1.4MHz frequency; lower 200mA output current; no 36V switch - max VSW = 20V; different FB reference (1.24V). | Limited to ≤18V outputs; unsuitable for TFT-LCD or xDSL applications requiring >20V rails. | Choose LT1613ES5#TRPBF only for low-power 3.3V→5V conversion where cost and legacy design reuse outweigh voltage/rating needs. |
Compared with LT1930ES5#TRPBF, LT1930AES5#TRPBF trades ~3% efficiency for 40% smaller magnetics and 30% smaller PCB area; versus LT1613ES5#TRPBF, it provides 2.5× higher output current and 80% higher voltage capability - critical for modern display and telecom power rails.
Availability
LT1930AES5#TRPBF is available at Aetrix Electronics and suitable for TFT-LCD bias supplies, digital camera power modules, medical diagnostic equipment, xDSL line drivers, and portable instrumentation requiring stable component supply with guaranteed long-term availability.
Supply support for LT1930AES5#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 industrial, automotive, communications, and healthcare markets.
The LT1930/LT1930A product line was designed specifically for space-constrained, high-voltage boost applications in portable electronics - emphasizing ultra-small magnetics, low-noise PWM control, and seamless integration into multi-rail power architectures.
FAQ
What is the maximum output voltage achievable with the LT1930AES5#TRPBF?
The LT1930AES5#TRPBF supports up to 34V output voltage due to its internal 36V-rated switch. This is confirmed in the Absolute Maximum Ratings table (SW voltage: –0.4V to 36V) and validated in application circuits such as the 5V-to-24V boost converter (TA04) and triple-output TFT-LCD bias supply (TA11a/TA12a). Output voltage is set externally via the FB resistive divider.
Can the LT1930AES5#TRPBF be used in SEPIC topology?
Yes, the LT1930AES5#TRPBF is explicitly qualified for SEPIC operation, as demonstrated in Figure TA02a/b (4-cell to 5V SEPIC converter) and referenced in the Applications Information section. Its 36V switch rating and current-mode control ensure stable regulation in both continuous and discontinuous conduction modes required for SEPIC designs.
What is the recommended inductor for LT1930AES5#TRPBF in a 5V-to-12V, 250mA application?
For a 5V-to-12V, 250mA boost application, the datasheet recommends a 2.2µH inductor - specifically the Murata LQH3C2R2M24 or Sumida CR43-2R2 - as shown in Typical Application TA08a. These parts handle ≥1A saturation current, feature low DCR (<130mΩ), and fit the 2.2MHz switching frequency without core loss penalties.
Does the LT1930AES5#TRPBF require an external phase-lead capacitor for stability?
Yes, a phase-lead capacitor (e.g., 10pF C3 in parallel with R1) is recommended to improve phase margin, especially with ceramic output capacitors. Figures F03–F04 show that omitting C3 causes ringing and overshoot, while adding 10pF yields damped transient response. The zero frequency should be set between 35kHz–55kHz using ƒZ = 1/(2π·R1·C3).
Is the LT1930AES5#TRPBF pin-compatible with the LT1613ES5#TRPBF?
No - although both are 5-lead ThinSOT regulators, the LT1930AES5#TRPBF is not pin-compatible with the LT1613ES5#TRPBF. The LT1613 uses different internal architecture (no integrated 36V switch), has lower voltage ratings (max SW = 20V), and lacks the same current limit and thermal characteristics. Pin mapping differs in functional intent despite identical physical layout.
LT1930AES5#TRPBF 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#TRPBF FAQ
1.How can I place an order for LT1930AES5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1930AES5#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 LT1930AES5#TRPBF reliable?
The price and inventory of LT1930AES5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1930AES5#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1930AES5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1930AES5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1930AES5#TRPBF?
LT1930AES5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1930AES5#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 LT1930AES5#TRPBF?
For technical support, including LT1930AES5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1930AES5#TRPBF requirements.
6.How does Aetrix verify that LT1930AES5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1930AES5#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 LT1930AES5#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1930AES5#TRPBF?
All LT1930AES5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1930AES5#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 LT1930AES5#TRPBF part is unused and in its original packaging.
Return procedure for LT1930AES5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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