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Analog Devices Inc. LTC3400BES6#TRMPBF
- Part No.:
- LTC3400BES6#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC3400BES6#TRMPBF.pdf
- Description:
- IC REG BOOST ADJ 600MA TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:5,455
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Product details
Overview
LTC3400BES6#TRMPBF from Analog Devices (formerly Linear Technology) is a synchronous, fixed-frequency boost DC/DC converter in a 6-lead ThinSOT package, delivering up to 100mA at 3.3V from a single AA cell (0.85V start-up), featuring continuous switching at light loads, 1.2MHz operation, and internal NMOS/PMOS switches.
For engineers reviewing the LTC3400BES6#TRMPBF datasheet, LTC3400BES6#TRMPBF pinout, LTC3400BES6#TRMPBF application, or LTC3400BES6#TRMPBF equivalent, key selection criteria include low-voltage start-up capability, absence of Burst Mode ripple, synchronous rectification efficiency, and SOT-23 footprint compatibility for space-constrained portable power rails.
Technical Context
The LTC3400BES6#TRMPBF implements current-mode PWM control with internal slope compensation and a 1.2MHz oscillator, enabling stable regulation with minimal external components. Its start-up circuit operates down to 0.85V, then transitions to fixed-frequency PWM once VOUT exceeds 2.3V, decoupling regulation from further VIN droop.
Unlike the LTC3400 variant, the LTC3400BES6#TRMPBF maintains continuous switching across all load conditions-eliminating low-frequency output ripple but trading off light-load quiescent current (500µA active vs. 19µA Burst Mode). Antiringing control damps SW-pin resonance during discontinuous conduction, reducing EMI without external snubbers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Start-Up Voltage | 0.85V min - enables operation from deeply discharged alkaline cells before regulation begins. |
| Switching Frequency | 1.2MHz typ - permits use of sub-5mm ceramic capacitors and 4.7µH chip inductors for ultra-compact layouts. |
| Output Voltage Range | 2.5V to 5V - set via external resistor divider on FB pin; supports common logic and analog supply rails. |
| Peak Switch Current | 600mA min - defines maximum deliverable output current under worst-case input/output conditions. |
| Quiescent Current (Active) | 300–500µA - measured on VOUT; determines battery drain during active light-load operation. |
| Shutdown Current | <1µA - ensures negligible battery leakage when system is powered off. |
| Feedback Voltage | 1.23V typ - precision reference used to calculate output voltage via R1/R2 divider ratio. |
Pinout & Package
Package: 6-lead ThinSOT (TSOT-23), 1.0mm max height, JEDEC MO-193 compliant, footprint compatible with standard SOT-23 land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (1) | Switch node | Drain of internal NMOS; connects to inductor; antiringing switch ties to VIN when current ceases. |
| GND (2) | Power and signal ground | Reference for all internal circuits; must connect directly to output capacitor negative terminal. |
| FB (3) | Feedback input | Senses resistor divider output; regulates VOUT by comparing to 1.23V internal reference. |
| SHDN (4) | Logic shutdown control | High = normal operation; low = <1µA shutdown; requires pull-up for default enable. |
| VOUT (5) | Output voltage sense / rectifier drain | Source of internal PMOS synchronous rectifier; supplies bias once started; held at VIN – 0.6V in shutdown. |
| VIN (6) | Battery input | Start-up bias source; supplies gate drive until VOUT > VIN; operation becomes VOUT-biased thereafter. |
Key Features
| Feature | Design Value |
|---|---|
| Continuous light-load operation | Eliminates Burst Mode low-frequency ripple, critical for noise-sensitive analog or RF supply rails. |
| Internal synchronous rectification | Integrates NMOS switch and PMOS rectifier - removes need for external Schottky diode in most 3.3V applications. |
| Antiringing control | Damps SW-node LC resonance at zero-current crossing - reduces radiated EMI without snubber components. |
| Low 0.85V start-up voltage | Enables full functionality from single-cell alkaline batteries even after significant discharge (e.g., ~1.0V nominal). |
| Fixed 1.2MHz frequency | Ensures predictable EMI profile and allows consistent filter design; avoids audible switching noise. |
Applications
| Digital Camera LCD Bias | Wireless Handset Core Logic Supply |
|---|---|
Use Scenario: Powering segmented LCD bias rails (e.g., AVDD = 3.3V, VGH = 12V generated separately) in compact digital cameras using AA/AAA cells. IC Role / Device Role / Timing Role: Primary 3.3V synchronous boost regulator supplying display interface ICs and memory buffers. Use Value: Continuous switching prevents visible flicker or ghosting caused by Burst Mode ripple on sensitive analog display lines. | Use Scenario: Generating stable 3.3V core voltage for baseband processors and transceivers in GSM/CDMA handsets operating from single Li-ion or dual alkaline cells. IC Role / Device Role / Timing Role: Main system power rail regulator with tight load transient response for burst-mode RF transmission. Use Value: 1.2MHz switching enables small ceramic output caps that maintain low impedance across 100kHz–10MHz, ensuring clean supply during TX bursts. |
| Pager Audio Amplifier Supply | GPS Receiver LNA Bias |
Use Scenario: Providing low-noise 3.3V supply to Class AB audio amplifiers in legacy pagers where battery life and board area are tightly constrained. IC Role / Device Role / Timing Role: Dedicated audio rail generator isolated from noisy digital switching domains. Use Value: Absence of Burst Mode modulation eliminates audible beat frequencies (<20kHz) that would otherwise couple into audio paths. | Use Scenario: Delivering regulated 3.3V to low-noise amplifier (LNA) stages in handheld GPS modules powered by coin cells or single alkaline cells. IC Role / Device Role / Timing Role: Ultra-low-EMI bias source for RF front-end; SW pin layout minimized per PCB guidelines. Use Value: Integrated antiringing control suppresses high-frequency ringing that could desensitize GPS RF reception below –150dBm. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3400ES6#TRMPBF | Includes Burst Mode operation; 19µA light-load IQ vs. 500µA for LTC3400BES6#TRMPBF; identical pinout and package. | Superior battery life in standby; introduces ~100Hz–1kHz output ripple during light loads. | Select LTC3400ES6#TRMPBF only if system spends >70% time in low-power sleep and ripple is filtered or tolerated. |
| LTC3423EDD#TRMPBF | 3MHz switching, separate BIAS pin, 1A switch, 10-lead DFN; higher efficiency above 50mA but larger footprint and cost. | Supports lower output voltages (down to 2.4V) and higher currents; requires additional bias supply routing. | Choose LTC3423EDD#TRMPBF when scaling beyond 100mA or requiring <2.5V outputs; not drop-in compatible. |
Compared with LTC3400ES6#TRMPBF, the LTC3400BES6#TRMPBF trades light-load efficiency for ripple-free output; versus LTC3423EDD#TRMPBF, it offers proven SOT-23 integration at lower cost and size, albeit with reduced current headroom and no BIAS pin flexibility.
Availability
LTC3400BES6#TRMPBF is available at Aetrix Electronics and suitable for handheld instruments, digital cameras, and wireless handsets requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC3400BES6#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 power management portfolio, emphasizing precision, efficiency, and reliability in analog-intensive applications.
The LTC3400B series belongs to Linear's micropower synchronous boost converter product line, designed specifically for battery-powered portable electronics demanding ultra-low start-up voltage and minimal solution footprint.
FAQ
What is the minimum input voltage required for LTC3400BES6#TRMPBF to start switching?
The LTC3400BES6#TRMPBF has a guaranteed minimum start-up voltage of 0.85V at 1mA load, enabling operation from nearly depleted alkaline cells. Once started, regulation continues even as VIN drops further, limited only by battery internal resistance and required output power. This behavior is confirmed in the Electrical Characteristics table and Figure 3400 G03.
Does LTC3400BES6#TRMPBF support adjustable output voltages, and how is it configured?
Yes, LTC3400BES6#TRMPBF supports output voltages from 2.5V to 5V using an external resistor divider on the FB pin. The formula is VOUT = 1.23V × (1 + R1/R2), where R2 connects from FB to GND and R1 from VOUT to FB. Typical values for 3.3V are R1 = 1.02MΩ and R2 = 604kΩ, as shown in Figure 3400 F01.
How does LTC3400BES6#TRMPBF differ from LTC3400ES6#TRMPBF in operational behavior?
The LTC3400BES6#TRMPBF operates in continuous conduction mode at all loads, eliminating Burst Mode ripple but drawing 300–500µA in light-load active mode. In contrast, LTC3400ES6#TRMPBF enters Burst Mode below ~3mA, reducing IQ to 19µA but introducing low-frequency output voltage modulation. Both share identical pinout, package, and startup specs.
Can LTC3400BES6#TRMPBF drive a 100mA load from a 1.2V input while maintaining 3.3V output?
Yes - the LTC3400BES6#TRMPBF is characterized to deliver 100mA at 3.3V from a single AA cell (typically 1.2V–1.5V), achieving up to 92% efficiency per Figure 3400 F01a. Performance depends on inductor selection (e.g., 4.7µH), low-ESR ceramic capacitors, and proper PCB layout per Figure 3400 F02.
What thermal considerations apply to LTC3400BES6#TRMPBF in sustained 100mA operation?
LTC3400BES6#TRMPBF has θJC = 102°C/W and TJMAX = 125°C. At 100mA/3.3V output from 1.2V input (~75% efficiency), power dissipation is ~110mW. With adequate copper pour on the GND pad, junction temperature rise stays below 12°C - well within limits. No heatsink is required in typical SOT-23 layouts.
LTC3400BES6#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 600mA (Switch)
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -30°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
LTC3400BES6#TRMPBF FAQ
1.How can I place an order for LTC3400BES6#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3400BES6#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 LTC3400BES6#TRMPBF reliable?
The price and inventory of LTC3400BES6#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3400BES6#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC3400BES6#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3400BES6#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3400BES6#TRMPBF?
LTC3400BES6#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3400BES6#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 LTC3400BES6#TRMPBF?
For technical support, including LTC3400BES6#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3400BES6#TRMPBF requirements.
6.How does Aetrix verify that LTC3400BES6#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC3400BES6#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 LTC3400BES6#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC3400BES6#TRMPBF?
All LTC3400BES6#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3400BES6#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 LTC3400BES6#TRMPBF part is unused and in its original packaging.
Return procedure for LTC3400BES6#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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