My Inquiry
My Account
Analog Devices Inc. LTC3525ISC6-5#TRPBF
- Part No.:
- LTC3525ISC6-5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
LTC3525ISC6-5#TRPBF.pdf
- Description:
- IC REG BOOST 5V 175MA SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,527
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC3525ISC6-5#TRPBF from Analog Devices (formerly Linear Technology) is a high-efficiency synchronous step-up DC/DC converter with output disconnect, designed for single- or dual-cell alkaline/NiMH or Li-Ion battery-powered systems. It starts up from as low as 0.85V input, delivers fixed 5V output, supports up to 175mA load from 3V input, and features 7µA quiescent current in Burst Mode® operation.
For engineers reviewing the LTC3525ISC6-5#TRPBF datasheet, LTC3525ISC6-5#TRPBF pinout, LTC3525ISC6-5#TRPBF application, or LTC3525ISC6-5#TRPBF equivalent, key selection criteria include ultralow IQ, output disconnect capability, SC70-6 package constraints, thermal shutdown behavior, and compatibility with 10µH inductor + 10µF ceramic output capacitor designs.
Technical Context
The LTC3525ISC6-5#TRPBF employs a hysteretic Burst Mode® control architecture with adaptive peak/valley inductor current regulation-reducing peak current to 150mA at light loads and scaling up to 400mA under heavy load. Its internal 0.4Ω NMOS switch and 0.7Ω PMOS synchronous rectifier enable high efficiency without external diodes.
Startup uses a dedicated oscillator enabling operation from 0.85V input; once VOUT exceeds VIN by ≥0.2V and either voltage reaches ≥1.8V, it transitions to normal synchronous mode. Output disconnect is active during shutdown, eliminating inrush and enabling zero-load leakage from VOUT to VIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.00V ±1.5% (guaranteed over –40°C to 125°C junction temp) |
| Input Start-Up Voltage | 0.85V minimum - enables direct use with single alkaline/NiMH cells |
| Quiescent Current | 7µA typical in Burst Mode® - extends battery life in always-on portable devices |
| Peak Switch Current | 400mA maximum - supports ≥175mA output at 3V input with >90% efficiency |
| Shutdown Current | <1µA - ensures near-zero battery drain when disabled |
| Operating Junction Temp | –40°C to 125°C - qualified for industrial and extended-temperature embedded applications |
| Package | 6-Lead SC70 (1.8mm × 1.15mm × 1.0mm) - ultra-compact footprint for space-constrained PCBs |
Pinout & Package
6-Lead Plastic SC70 package (JEDEC MO-203 AB, EIAJ SC-70), 1.0mm max height, thermally enhanced for 150°C/W θJA on ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SHDN (Pin 1) | Logic-Controlled Shutdown Input | Pulled <0.4V to disable; >1V to enable; must avoid 0.5V–1V above VIN/VOUT to prevent test mode activation |
| GND (Pins 2, 5) | Power Ground Reference | Dual GND pins reduce ground impedance and improve noise immunity in high-frequency switching |
| VIN (Pin 3) | Main Input Power Supply | Supplies IC until VOUT > VIN + 0.2V; requires ≥1µF ceramic bypass close to pin |
| VOUT (Pin 4) | Regulated Output & Sense Node | Delivers fixed 5V; connects to ≥10µF ceramic output capacitor; disconnected from VIN during shutdown |
| SW (Pin 6) | Switch Node | Drives external inductor; integrates antiringing resistor to suppress EMI at zero-current crossing |
Key Features
| Feature | Design Value |
|---|---|
| Output Disconnect | True mechanical disconnection of VOUT from VIN during shutdown - eliminates inrush and enables zero-load leakage |
| Burst Mode® Operation | 7µA IQ with automatic peak/valley current scaling - maintains >85% efficiency down to 100µA load |
| Synchronous Rectification | Integrated 0.4Ω NMOS + 0.7Ω PMOS switches - removes need for external Schottky diode and improves full-load efficiency |
| Antiringing Control | On-chip resistor across SW–VIN - damps LC ringing at switch turn-off, reducing EMI without external components |
| Thermal Shutdown | Activates at TJ > 125°C - protects device during overload or poor heatsinking; auto-recovery on cooldown |
Applications
| Glucose Meters | Digital Cameras |
|---|---|
Use Scenario: Portable handheld medical device powered by single AA/AAA alkaline cell requiring stable 5V rail for LCD backlight and sensor interface. IC Role / Device Role / Timing Role: Primary 5V power source with output disconnect to isolate battery during standby and prevent self-discharge. Use Value: Enables 0.85V startup and 7µA quiescent current - extends battery life to >1 year in intermittent-use clinical settings. |
Use Scenario: Compact digital still camera using dual NiMH cells (2.4V nominal) to power 5V image sensor and flash LED driver. IC Role / Device Role / Timing Role: Synchronous boost converter delivering regulated 5V with fast transient response to handle burst-mode sensor readout. Use Value: Delivers 175mA at 5V from 3V input with >92% efficiency - minimizes heat rise in sealed plastic housing. |
| MP3 Players | Portable Instruments |
Use Scenario: Flash-based audio player operating from single Li-Ion cell (3.0–4.2V range) needing clean 5V supply for USB interface and DAC. IC Role / Device Role / Timing Role: Step-up regulator with output disconnect to isolate USB VBUS during host enumeration and prevent backfeed. Use Value: Maintains regulation even when VIN ≥ VOUT (e.g., 4.2V input → 5V output) - simplifies BOM by eliminating separate LDO path. |
Use Scenario: Handheld multimeter or data logger powered by two alkaline cells (1.8–3.2V) requiring precise 5V reference and microcontroller rail. IC Role / Device Role / Timing Role: Primary 5V supply with tight load/line regulation (±1.5%) and low output ripple (<60mVpp at full load). Use Value: 22µF output capacitor option reduces ripple to <20mVpp - improves ADC accuracy and analog front-end SNR. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC3528ESC6-5#TRPBF | Higher 1A peak current, 700mV start-up, DFN-8 package (2mm × 3mm) | Supports higher output current (up to 500mA) but requires larger PCB area and different layout | Choose for >200mA 5V loads where SC70 size constraint is relaxed |
| LTC3429ESC6-5#TRPBF | 500kHz fixed-frequency PWM, 600mA peak current, same SC70-6 package | No output disconnect; higher IQ (20µA); optimized for lower-noise fixed-frequency operation | Choose when EMI filtering is prioritized over shutdown leakage or burst-mode efficiency |
Compared with LTC3525ISC6-5#TRPBF, LTC3528ESC6-5#TRPBF offers greater current headroom at the cost of larger footprint and no output disconnect, while LTC3429ESC6-5#TRPBF trades ultralow IQ and disconnect for predictable EMI profile and higher average load capability.
Availability
LTC3525ISC6-5#TRPBF is available at Aetrix Electronics and suitable for glucose meters, digital cameras, MP3 players, and portable instruments requiring stable component supply with industrial temperature range support and long-term lifecycle assurance.
Supply support for LTC3525ISC6-5#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 technical and manufacturing continuity for legacy Linear power products.
The LTC3525ISC6-5#TRPBF belongs to Linear's micropower synchronous boost converter family, engineered specifically for battery-powered portable electronics demanding minimal quiescent current, ultra-low-voltage startup, and true output isolation.
FAQ
What is the minimum input voltage required for LTC3525ISC6-5#TRPBF to start switching?
The LTC3525ISC6-5#TRPBF starts switching with an input voltage as low as 0.85V. This enables reliable operation directly from a single alkaline or NiMH cell at end-of-life. Startup requires both this minimum voltage and sufficient load capacitance; the internal oscillator initiates operation before synchronous rectification engages.
Does LTC3525ISC6-5#TRPBF support operation when input voltage exceeds output voltage?
Yes, the LTC3525ISC6-5#TRPBF maintains regulation even when VIN ≥ VOUT (e.g., 4.2V Li-Ion input to 5V output), though the synchronous rectifier is disabled in this mode. Efficiency drops due to body-diode conduction, and output current capability is reduced - consult the "VIN > VOUT Operation" section of the datasheet for derating guidance.
What is the recommended output capacitor value for LTC3525ISC6-5#TRPBF?
The minimum recommended output capacitor for LTC3525ISC6-5#TRPBF is 10µF X5R/X7R ceramic, placed close to VOUT and GND pins. Using 22µF reduces output ripple from ~60mVpp to ~20mVpp at full load. Capacitors >47µF increase light-load peak inductor current, degrading Burst Mode® efficiency.
How does the shutdown function behave on LTC3525ISC6-5#TRPBF?
Pulling SHDN below 0.4V disables LTC3525ISC6-5#TRPBF, dropping shutdown current to <1µA and activating true output disconnect. A 20–120µs delay occurs after SHDN rises above 1V before switching resumes. Avoid holding SHDN between 0.5V and 1V above VIN/VOUT to prevent unintended test mode activation.
Is LTC3525ISC6-5#TRPBF RoHS-compliant and lead-free?
Yes, LTC3525ISC6-5#TRPBF is RoHS-compliant and features lead-free finish per JEDEC J-STD-609. The part marking "LBWT" and packaging designation "#TRPBF" confirm tape-and-reel delivery with lead-free termination. Full compliance documentation is available through Analog Devices' product page.
LTC3525ISC6-5#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1V
- Voltage - Input (Max):
- 4.5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 175mA
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
LTC3525ISC6-5#TRPBF FAQ
1.How can I place an order for LTC3525ISC6-5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3525ISC6-5#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 LTC3525ISC6-5#TRPBF reliable?
The price and inventory of LTC3525ISC6-5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3525ISC6-5#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3525ISC6-5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3525ISC6-5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3525ISC6-5#TRPBF?
LTC3525ISC6-5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3525ISC6-5#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 LTC3525ISC6-5#TRPBF?
For technical support, including LTC3525ISC6-5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3525ISC6-5#TRPBF requirements.
6.How does Aetrix verify that LTC3525ISC6-5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3525ISC6-5#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 LTC3525ISC6-5#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3525ISC6-5#TRPBF?
All LTC3525ISC6-5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3525ISC6-5#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 LTC3525ISC6-5#TRPBF part is unused and in its original packaging.
Return procedure for LTC3525ISC6-5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC3525ISC6-5#TRPBF Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
