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Analog Devices Inc. LT1930ES5#TRMPBF
- Part No.:
- LT1930ES5#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LT1930ES5#TRMPBF.pdf
- Description:
- IC REG BST FLYBACK ADJ TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:11,592
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Product details
Overview
LT1930ES5#TRMPBF from Analog Devices (formerly Linear Technology) is a 1.2MHz, 1A step-up DC/DC converter in a 5-lead ThinSOT package. It features a 36V internal switch, 1.255V feedback reference, 400mV typical VCE(SAT) at 1A, wide 2.6V–16V input range, and delivers up to 5V@480mA from 3.3V input-ideal for compact TFT-LCD bias supplies and portable medical diagnostics.
For engineers reviewing the LT1930ES5#TRMPBF datasheet, LT1930ES5#TRMPBF pinout, LT1930ES5#TRMPBF application, or LT1930ES5#TRMPBF equivalent, key selection criteria include switching frequency (1.2MHz), maximum duty cycle (84%), shutdown current (<1µA), output voltage capability (up to 34V), and compatibility with ceramic output capacitors for low-noise operation.
Technical Context
The LT1930ES5#TRMPBF employs a constant-frequency, current-mode PWM architecture with internal compensation, delivering predictable output noise and stable regulation across line and load variations. Its 1.255V precision reference and ±1mA FB pin bias enable accurate output setting via external resistive dividers.
It integrates a 36V, 1A NPN power switch with 400mV typical saturation voltage, supporting boost, SEPIC, and flyback topologies. The device operates over –40°C to 85°C and features <1µA shutdown current, enabling battery-backed systems requiring ultra-low quiescent power.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.2MHz - enables use of small, low-profile inductors (e.g., 4.7µH) and ceramic capacitors without compromising stability |
| Input Voltage Range | 2.6V to 16V - supports single- to four-cell alkaline, Li-ion, or regulated 3.3V/5V rails |
| Feedback Reference | 1.255V ±15mV - sets output voltage precisely via R1/R2 divider; enables 5V, 12V, 24V, or custom outputs |
| Max Output Voltage | 34V - sufficient for TFT-LCD VPOS/VNEG bias generation and xDSL line drivers |
| Switch Current Limit | 1.2A typical - protects internal transistor and external components during overload or short-circuit events |
| Shutdown Current | <1µA - preserves battery life in always-on or wake-on-event portable equipment |
| Package | 5-Lead ThinSOT (S5) - 1mm profile, 0.95mm width, compatible with high-density PCB layouts |
Pinout & Package
LT1930ES5#TRMPBF is housed in a 5-lead ThinSOT (S5) plastic package - a low-profile variant of SOT-23 measuring 2.8–3.1mm × 1.9mm × 1.0mm max height. Pin 1 is SW (switch node), Pin 2 is GND, Pin 3 is FB (feedback), Pin 4 is SHDN (shutdown), and Pin 5 is VIN (input supply).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pin 1) | Switch collector node | Connects to inductor and Schottky diode anode; high dv/dt node requiring minimal trace area to reduce EMI |
| GND (Pin 2) | Power and signal ground | Must tie directly to local ground plane; serves as return path for switch current and feedback reference |
| FB (Pin 3) | Feedback input | Monitors output via resistive divider; regulates output by comparing to 1.255V internal reference |
| SHDN (Pin 4) | Enable/disable control | Logic-high ≥2.4V enables regulator; grounded or pulled low disables with <1µA quiescent draw |
| VIN (Pin 5) | Input supply | Accepts 2.6V–16V; requires local 2.2µF ceramic bypass capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| 1.2MHz fixed-frequency PWM | Enables use of sub-5mm footprint inductors and avoids AM radio band interference |
| 36V, 1A integrated NPN switch | Supports 34V boost outputs and SEPIC/flyback topologies without external transistor |
| Low 400mV VCE(SAT) at 1A | Reduces conduction loss and thermal rise in high-current portable applications |
| 1.255V precision feedback reference | Ensures ±1.2% output accuracy over temperature and line/load conditions |
| ThinSOT-5 (S5) package | 1mm height allows stacking under connectors or in ultra-thin handheld enclosures |
Applications
| TFT-LCD Bias Supply | Digital Camera Power |
|---|---|
Use Scenario: Generating +9V, –9V, and +18V from a 3.3V rail for active matrix LCD panel gate/source drivers. IC Role / Device Role / Timing Role: Primary boost controller in triple-output bias generator with soft-start sequencing. Use Value: Delivers 200mA positive and 10mA negative outputs simultaneously using coupled inductors and fast Schottky diodes. | Use Scenario: Powering CCD sensor bias, flash LED driver, and memory card interface from two AA cells (2.6–3.2V). IC Role / Device Role / Timing Role: Main 5V system rail generator with transient response optimized for burst-mode imaging. Use Value: Achieves 87% efficiency at 300mA load and 3.3V input, sustaining >450mA peak during autofocus actuation. |
| Medical Diagnostic Handheld | xDSL Line Power |
Use Scenario: Providing isolated 12V and 5V rails for ultrasound transducer front-end and microcontroller in battery-operated point-of-care devices. IC Role / Device Role / Timing Role: High-reliability boost converter with robust ESD-tolerant pins and –40°C to 85°C guaranteed operation. Use Value: Maintains regulation during 100ms brownout events and supports >10,000 charge/discharge cycles with <1µA shutdown drain. | Use Scenario: Generating 24V/150mA for DSL line driver ICs in residential gateway modems powered from 5V USB or wall adapter. IC Role / Device Role / Timing Role: Compact, low-noise boost stage preceding linear post-regulation for analog line interface. Use Value: Enables full 24V compliance margin while fitting within 0.1 in² board area using 10µH/2.2µF ceramic solution. |
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 |
|---|---|---|---|
| LT1930AES5#TRMPBF | 2.2MHz switching frequency, 75% max duty cycle, same pinout and package | Better suited for space-constrained designs needing smaller inductors; lower efficiency at high output currents | Select when board area is critical and output current ≤250mA; verify duty cycle margin for target VOUT/VIN ratio |
| LT1613ES5#TRMPBF | 1.4MHz frequency, 200mA output capability, lower current limit (0.6A), identical S5 package | Targeted at lower-power applications like PC cards or modems where 5V@200mA suffices | Choose for cost-sensitive, low-current systems where 1A capability is unnecessary and BOM simplification is prioritized |
Compared with LT1930AES5#TRMPBF, the LT1930ES5#TRMPBF offers higher efficiency and greater output current headroom at the expense of larger magnetics; versus LT1613ES5#TRMPBF, it provides 2.4× higher switch current and broader input/output flexibility for demanding portable power rails.
Availability
LT1930ES5#TRMPBF is available at Aetrix Electronics and suitable for TFT-LCD bias supplies, digital camera power management, medical diagnostic handsets, and xDSL line power requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LT1930ES5#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 full technical and manufacturing continuity for legacy Linear power products.
The LT1930 series was designed specifically for high-current, high-voltage boost conversion in space-limited portable electronics - emphasizing small magnetics, low-profile packaging, and robust operation across industrial temperature ranges.
FAQ
What is the maximum output voltage achievable with the LT1930ES5#TRMPBF?
The LT1930ES5#TRMPBF supports up to 34V output in boost configuration, limited by its 36V-rated internal switch. This is confirmed in the Absolute Maximum Ratings table and validated in application circuits such as the 5V-to-24V boost converter (Figure TA04) and triple-output TFT-LCD bias supplies (Figures TA11a/TA12a). Output voltage is set externally via the FB resistive divider.
Does the LT1930ES5#TRMPBF require an external compensation network?
No, the LT1930ES5#TRMPBF uses an internally compensated current-mode PWM architecture. As stated in the "Operation" section, no external compensation components are needed - only the FB resistive divider, input/output capacitors, inductor, and Schottky diode. A phase-lead capacitor (e.g., 10pF) across R1 is optional for improving transient response but not required for stability.
Can the LT1930ES5#TRMPBF be used in SEPIC topology?
Yes, the LT1930ES5#TRMPBF is explicitly qualified for SEPIC operation, as demonstrated in Figure TA02a (4-cell to 5V SEPIC converter) and described in the Applications Information section. Its 36V switch rating and current-mode control support bidirectional energy transfer, and the datasheet confirms 5V@300mA output from four alkaline cells using this topology.
What is the recommended inductor for the LT1930ES5#TRMPBF in a 3.3V-to-5V application?
For a 3.3V-to-5V boost application, the datasheet recommends a 4.7µH or 10µH ferrite-core inductor rated for ≥1A saturation current and low DCR - e.g., Sumida CR43-4R7 (4.7µH, 109mΩ) or CR43-100 (10µH, 182mΩ). These values appear in Table 1 ("Recommended Inductors – LT1930") and are validated in Figure TA07a, which achieves 480mA output at 87% efficiency.
Is the LT1930ES5#TRMPBF pin-compatible with the LT1613ES5#TRMPBF?
Yes, the LT1930ES5#TRMPBF is pin-for-pin compatible with the LT1613ES5#TRMPBF per the "Features" section, which states "Pin-for-Pin Compatible with the LT1613". Both use the same 5-lead ThinSOT (S5) package with identical pin assignments (SW, GND, FB, SHDN, VIN), enabling drop-in replacement where higher current capability is needed.
LT1930ES5#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:
- 1.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
LT1930ES5#TRMPBF FAQ
1.How can I place an order for LT1930ES5#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1930ES5#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 LT1930ES5#TRMPBF reliable?
The price and inventory of LT1930ES5#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1930ES5#TRMPBF is usually 5 days.
3.What payment methods are accepted for LT1930ES5#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1930ES5#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1930ES5#TRMPBF?
LT1930ES5#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1930ES5#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 LT1930ES5#TRMPBF?
For technical support, including LT1930ES5#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1930ES5#TRMPBF requirements.
6.How does Aetrix verify that LT1930ES5#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LT1930ES5#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 LT1930ES5#TRMPBF meets industry standards.
7.What is the process for return or replacement of LT1930ES5#TRMPBF?
All LT1930ES5#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1930ES5#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 LT1930ES5#TRMPBF part is unused and in its original packaging.
Return procedure for LT1930ES5#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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