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Analog Devices Inc. LT1930ES5#TRPBF
- Part No.:
- LT1930ES5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
LT1930ES5#TRPBF.pdf
- Description:
- IC REG BST FLYBACK ADJ TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,895
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Product details
Overview
LT1930ES5#TRPBF from Analog Devices (formerly Linear Technology) is a 1.2MHz, 1A step-up DC/DC converter in a 5-lead ThinSOT package, featuring a 36V internal switch, 1.255V feedback reference, and 400mV VCE(SAT) at 1A. It delivers 5V at 480mA from a 3.3V input and supports wide-input operation from 2.6V to 16V for portable power rails.
For engineers reviewing the LT1930ES5#TRPBF datasheet, LT1930ES5#TRPBF pinout, LT1930ES5#TRPBF application, or LT1930ES5#TRPBF equivalent, key selection criteria include switching frequency (1.2MHz), maximum output voltage (34V), shutdown current (<1µA), feedback accuracy (±15mV), and compatibility with ceramic output capacitors in space-constrained boost designs.
Technical Context
The LT1930ES5#TRPBF employs a constant-frequency, current-mode PWM architecture with internal compensation, enabling stable regulation and predictable noise spectra. Its 1.2MHz oscillator allows use of compact 2.2–10µH inductors and low-ESR ceramic capacitors without external compensation.
It integrates a 36V/1A NPN switch with 400mV saturation voltage, supporting boost, SEPIC, and flyback topologies. The 1.255V feedback reference is trimmed to ±1.2% over temperature, and the FB pin bias current is 120–360nA - enabling high-impedance resistor dividers for precision output setting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.2MHz - enables use of sub-3mm height inductors and reduces solution footprint by >50% vs. 500kHz converters. |
| Max Output Voltage | 34V - supports TFT-LCD bias, xDSL, and industrial auxiliary rails without external clamp circuitry. |
| Feedback Reference | 1.255V ±15mV - allows accurate output setting with standard 1% resistors; enables 5V, 12V, 24V, or custom outputs via R1/R2 divider. |
| VCE(SAT) @ 1A | 400mV - minimizes conduction loss at full load, sustaining >85% efficiency at 300mA output from 3.3V input. |
| Shutdown Current | <1µA - preserves battery life in always-on systems such as medical diagnostics and backup supplies. |
| Input Voltage Range | 2.6V to 16V - accommodates single-cell Li-ion (2.7–4.2V), 4-cell alkaline (4–6.5V), and 12V industrial rails without pre-regulation. |
| Package | 5-Lead ThinSOT (S5) - 1mm profile, 2.8 × 2.9 × 1.0mm footprint; compatible with automated SMT assembly and high-density PCB layouts. |
Pinout & Package
LT1930ES5#TRPBF is housed in a 5-lead ThinSOT (S5) plastic package - a low-profile variant of SOT-23 with 1mm max height, 2.8mm × 2.9mm body, and gull-wing leads. Pin 1 (SW) carries high di/dt switching current; Pin 2 (GND) must connect directly to local ground plane; Pin 3 (FB) requires minimal trace length to avoid noise coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pin 1) | Switch Collector | Connects to inductor and Schottky diode anode; high-voltage, high-di/dt node requiring minimized trace area to reduce EMI. |
| GND (Pin 2) | Power Ground | Primary return path for switch current and IC bias; must tie directly to local ground plane with short, low-inductance connection. |
| FB (Pin 3) | Feedback Input | Senses output voltage via resistive divider; 1.255V reference sets regulation point; sensitive to noise - keep trace short and away from SW/GND loops. |
| SHDN (Pin 4) | Enable Control | Logic-high (>2.4V) enables regulator; logic-low (<0.5V) disables with <1µA quiescent draw; max rating 10V - series resistor required if driven from >10V rail. |
| VIN (Pin 5) | Input Supply | Accepts 2.6–16V; requires local 2.2–4.7µF ceramic bypass capacitor placed adjacent to pin to suppress high-frequency ripple. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 36V/1A NPN switch | Eliminates external transistor and driver; supports up to 34V boost output and SEPIC/flyback topologies without redesign. |
| 1.2MHz fixed-frequency PWM | Enables use of 2.2–4.7µH chip inductors under 3mm height and 4.7–10µF X5R ceramics - reducing BOM count and board area by ~60% vs. lower-frequency alternatives. |
| Low 400mV VCE(SAT) at 1A | Reduces conduction loss by >30% versus typical 600–800mV switches, improving full-load efficiency and thermal margin in sealed enclosures. |
| 1.255V ±1.2% feedback reference | Permits precise output regulation using standard 1% resistors; supports tight-tolerance rails for analog sensors and RF modules. |
| Sub-1µA shutdown current | Extends battery runtime in standby mode for portable medical devices and remote sensors - critical for multi-year deployments. |
Applications
| TFT-LCD Bias Supply | Digital Camera Power Rail |
|---|---|
Use Scenario: Generating +9V, –9V, and +18V from a 3.3V supply 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 while maintaining <1% output regulation across load steps - verified in TA11a reference design. | Use Scenario: Providing 5V at 450mA from a 3.3V Li-ion battery to power image sensor, flash LED driver, and SD card interface. IC Role / Device Role / Timing Role: Main step-up regulator in compact camera module with fast transient response. Use Value: Achieves 88% peak efficiency and <50mV output overshoot during 300mA load steps - validated in TA09a layout with Murata LQH3C2R2M24 inductor. |
| PC Card Local 5V Supply | Battery Backup System |
Use Scenario: Converting 3.3V system bus to regulated 5V for legacy PC Card (PCMCIA) peripherals in embedded laptops. IC Role / Device Role / Timing Role: Standalone boost converter with no external compensation required. Use Value: Maintains 5V ±2% regulation across 0–300mA load range and –40°C to +85°C ambient - confirmed in TA01 and TA07a schematics. | Use Scenario: Delivering 12V at 250mA from a 5V main rail to charge supercapacitor-based backup power for real-time clocks and SRAM retention. IC Role / Device Role / Timing Role: High-efficiency boost stage with ultra-low shutdown leakage. Use Value: Draws only 0.01µA in shutdown, preserving >95% of stored energy over 72-hour outage - specified in Electrical Characteristics table. |
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 |
|---|---|---|---|
| LT1613ES5#TRPBF | 1.4MHz switching frequency; 200mA max output; 36V switch; same 5-lead ThinSOT package. | Lower output current capability limits use to light loads (≤200mA); optimized for 3.3V-to-5V conversion only. | Select when size and cost outweigh current demand - e.g., low-power USB peripherals where 1A headroom is unnecessary. |
| LT1931ES5#TRPBF | Inverting topology; generates negative outputs (e.g., –5V); identical 1.2MHz frequency and 36V switch rating. | Not usable for positive boost; requires different magnetics and layout; targets dual-rail analog circuits. | Choose only for inverting applications - e.g., op-amp split supplies - never as direct replacement for LT1930ES5#TRPBF's boost function. |
Compared with LT1613ES5#TRPBF and LT1931ES5#TRPBF, the LT1930ES5#TRPBF uniquely balances 1A output current, 34V capability, and 1.2MHz operation in the ThinSOT footprint - making it the sole option among these three for high-current, high-voltage boost without changing PCB layout or magnetics.
Availability
LT1930ES5#TRPBF is available at Aetrix Electronics and suitable for TFT-LCD bias supplies, digital camera power rails, PC Card local 5V generation, battery backup systems, and medical diagnostic equipment requiring stable component supply and long-term manufacturability.
Supply support for LT1930ES5#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, datasheets, and application engineering for legacy Linear parts including the LT1930 family.
The LT1930 series was designed specifically for high-power-density, wide-input boost conversion in portable and space-constrained industrial systems - emphasizing low-profile packaging, ceramic-capacitor compatibility, and robust 36V switch integration.
FAQ
What is the maximum output voltage achievable with the LT1930ES5#TRPBF?
The LT1930ES5#TRPBF supports up to 34V output voltage, enabled by its integrated 36V-rated NPN switch. This is confirmed in the Absolute Maximum Ratings table (SW voltage: –0.4V to 36V) and Typical Application circuits (e.g., TA04 shows 24V output; TA01 notes "up to 34V"). Operation beyond 34V risks switch breakdown and is not supported.
Does the LT1930ES5#TRPBF require external compensation components?
No, the LT1930ES5#TRPBF uses an internally compensated current-mode PWM architecture. The datasheet Block Diagram (Figure 2) and Applications Information section explicitly state "constant frequency internally compensated" control - eliminating need for external RC networks or type-II/III compensators required by voltage-mode controllers.
Can the LT1930ES5#TRPBF be used in SEPIC topology?
Yes, the LT1930ES5#TRPBF is qualified for SEPIC operation, as stated in the Features list ("ideal for boost converters up to 34V as well as for single-ended primary inductance converter (SEPIC) and flyback designs") and demonstrated in Typical Application TA02a/b (4-cell to 5V SEPIC converter with coupled inductors).
What is the recommended inductor value for a 3.3V-to-5V, 480mA LT1930ES5#TRPBF design?
The datasheet recommends a 4.7µH or 5.6µH inductor for 3.3V-to-5V boost with LT1930ES5#TRPBF. TA07a uses a 5.6µH Sumida CR43-5R6; Table 1 lists CR43-4R7 (4.7µH) and CDRH5D18-4R1 (4.1µH) as validated options - all rated ≥1A saturation current and ≤200mΩ DCR to maintain efficiency and stability.
Is the LT1930ES5#TRPBF pin-compatible with the LT1930AES5#TRPBF?
No - although both share the same 5-lead ThinSOT package and pinout, the LT1930ES5#TRPBF (1.2MHz) and LT1930AES5#TRPBF (2.2MHz) differ in maximum duty cycle (84% vs. 75%), current limit behavior, and efficiency vs. size trade-offs. They are not drop-in replacements; switching frequency mismatch affects inductor sizing, loop stability, and EMI filtering requirements.
LT1930ES5#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:
- 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#TRPBF FAQ
1.How can I place an order for LT1930ES5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LT1930ES5#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 LT1930ES5#TRPBF reliable?
The price and inventory of LT1930ES5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LT1930ES5#TRPBF is usually 5 days.
3.What payment methods are accepted for LT1930ES5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LT1930ES5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LT1930ES5#TRPBF?
LT1930ES5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LT1930ES5#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 LT1930ES5#TRPBF?
For technical support, including LT1930ES5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LT1930ES5#TRPBF requirements.
6.How does Aetrix verify that LT1930ES5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LT1930ES5#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 LT1930ES5#TRPBF meets industry standards.
7.What is the process for return or replacement of LT1930ES5#TRPBF?
All LT1930ES5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LT1930ES5#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 LT1930ES5#TRPBF part is unused and in its original packaging.
Return procedure for LT1930ES5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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