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Analog Devices Inc. LTC1517ES5-5#TRMPBF
- Part No.:
- LTC1517ES5-5#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LTC1517ES5-5#TRMPBF.pdf
- Description:
- IC REG CHARGE PUMP 5V SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,155
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Product details
Overview
LTC1517ES5-5#TRMPBF from Analog Devices (formerly Linear Technology) is a micropower regulated 5V charge pump DC/DC converter in a 5-pin SOT-23 package. It delivers ±4% regulated 5V output from 2.7V–5V input, draws only 6µA typical no-load supply current, supports up to 20mA output at VIN ≥ 3V, and operates at 800kHz without inductors-ideal for space-constrained battery-powered instrumentation.
For engineers reviewing the LTC1517ES5-5#TRMPBF datasheet, LTC1517ES5-5#TRMPBF pinout, LTC1517ES5-5#TRMPBF application, or LTC1517ES5-5#TRMPBF equivalent, key selection criteria include ultralow quiescent current, fixed 5V regulation tolerance, thermal/short-circuit protection, SOT-23 footprint compatibility, and capacitor-based topology eliminating inductors.
Technical Context
The LTC1517ES5-5#TRMPBF implements a Burst Mode™ switched-capacitor voltage doubler architecture with internal 1.25V reference and resistor-divider feedback sensing. Regulation is achieved via hysteresis-controlled enable/disable of the 800kHz oscillator driving nonoverlapping charge pump switches.
It integrates thermal shutdown (trip ~160°C, recovery ~145°C) and survives indefinite VOUT-to-GND short circuits by limiting input current to 50–200mA. The device requires only three external capacitors: 0.1µF flying cap (C1), ≥3.3µF input bypass (CIN), and ≥3.3µF output filter (COUT).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±4% - ensures stable logic-level supply across full load and temperature range |
| Input Voltage Range | 2.7V to 5V - compatible with single Li-ion, NiMH, or 3.3V system rails |
| No-Load Supply Current | 6µA typ - enables multi-year battery life in always-on sensor nodes |
| Max Output Current | 20mA at VIN ≥ 3V - sufficient for low-power microcontrollers, sensors, and interface ICs |
| Switching Frequency | 800kHz - allows use of small ceramic capacitors and minimizes EMI filtering needs |
| Output Ripple | 75mVP-P at 20mA - manageable with standard 6.8µF low-ESR ceramic output cap |
| Operating Temp Range | –40°C to +85°C - qualified for extended industrial environments |
Pinout & Package
Package: 5-lead plastic SOT-23 (SC-74A), 2.80–3.00mm × 1.90mm × 1.10mm, 256°C/W junction-to-ambient thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply | Accepts 2.7V–5V; requires ≥3.3µF low-ESR bypass capacitor placed adjacent to pin |
| GND (Pin 2) | Power ground reference | Must connect to low-impedance ground plane to minimize noise and thermal rise |
| VOUT (Pin 3) | Regulated 5V output | Delivers up to 20mA; requires ≥3.3µF low-ESR output capacitor for ripple control |
| C1+ (Pin 4) | Flying capacitor positive terminal | Connects to positive plate of 0.1µF ceramic flying capacitor (C1) |
| C1– (Pin 5) | Flying capacitor negative terminal | Connects to negative plate of same 0.1µF flying capacitor; forms charge transfer path |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 6µA typical ICC enables >10-year battery life in 10µA average-load applications |
| Inductorless topology | Eliminates magnetic components, reducing BOM cost, board area, and EMI concerns |
| Thermal and short-circuit protection | Auto-cycles between shutdown and operation under fault, preventing damage during VOUT shorts |
| Small PCB footprint | Total application area as low as 0.045 in² (29 mm²) with minimal external parts |
| Burst Mode™ regulation | Dynamically enables/disables charge pump to maintain regulation while minimizing idle power |
Applications
| Portable Medical Sensors | Low-Power IoT End Nodes |
|---|---|
Use Scenario: Continuous glucose monitor using coin-cell battery and ultra-low-power ADC. IC Role / Device Role / Timing Role: Provides regulated 5V rail for precision analog front-end and microcontroller I/O. Use Value: 6µA no-load current extends battery life beyond 3 years; 0.045 in² layout fits inside compact wearable enclosure. | Use Scenario: Battery-powered environmental sensor node transmitting data via BLE every 5 minutes. IC Role / Device Role / Timing Role: Generates stable 5V supply for RF transceiver and digital logic during active transmission bursts. Use Value: Delivers 20mA peak current with <75mV ripple, ensuring reliable radio modulation without supply droop-induced packet loss. |
| Handheld Test Instruments | PCMCIA Card Power |
Use Scenario: Pocket-sized multimeter powered by two AAA cells with auto-ranging display backlight. IC Role / Device Role / Timing Role: Boosts declining battery voltage to fixed 5V for LCD driver and signal conditioning circuitry. Use Value: Maintains ±4% regulation down to 2.7V input, enabling full functionality until battery depletion threshold. | Use Scenario: PCMCIA modem card requiring isolated 5V supply independent of host bus voltage. IC Role / Device Role / Timing Role: Local DC/DC conversion from 3.3V host rail to compliant 5V I/O supply. Use Value: SOT-23 footprint integrates directly on card edge without requiring external inductor placement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar regulated charge pump DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1522EMS8-5#TRPBF | Includes active-low SHDN pin; MS8 package (8-pin MSOP); same 5V output, 6µA IQ, 20mA capability | Required when system-level shutdown control or higher thermal performance (θJA = 200°C/W) is needed | Select LTC1522EMS8-5#TRPBF if board layout allows larger MSOP and explicit enable control is required |
| LTC1516ES5-5#TRMPBF | Same SOT-23-5 package; wider input range (2V–5V); higher output current (50mA at VIN ≥ 3V) | Suitable for applications needing greater drive capability but accepting slightly higher 15µA typical IQ | Select LTC1516ES5-5#TRMPBF when >20mA load or sub-2.7V brownout operation is required |
Compared with LTC1517ES5-5#TRMPBF, LTC1522EMS8-5#TRPBF adds controllable shutdown at the cost of larger footprint and different pinout, while LTC1516ES5-5#TRMPBF trades 9µA higher no-load current for 2.5× output current and lower VIN start-up-enabling broader battery voltage support.
Availability
LTC1517ES5-5#TRMPBF is available at Aetrix Electronics and suitable for portable medical sensors, low-power IoT end nodes, and handheld test instruments requiring stable component supply, long-life battery operation, and minimal PCB area.
Supply support for LTC1517ES5-5#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 analog and power management portfolio.
The LTC1517 series belongs to Linear's micropower DC/DC converter product line, designed specifically for battery-powered systems where ultra-low quiescent current, small size, and inductorless operation are critical.
FAQ
What is the minimum input voltage required for LTC1517ES5-5#TRMPBF to regulate 5V output?
The LTC1517ES5-5#TRMPBF requires a minimum input voltage of 2.7V to maintain 5V ±4% regulation at up to 10mA output. At input voltages below 2.7V, regulation is not guaranteed per the datasheet specifications. For 20mA output, VIN must be ≥3V. This behavior is inherent to the charge pump topology and internal voltage reference design.
Does LTC1517ES5-5#TRMPBF include built-in protection features?
Yes, LTC1517ES5-5#TRMPBF integrates both short-circuit and thermal protection. Under continuous VOUT-to-GND short, it limits input current to 50–200mA and cycles into/out of thermal shutdown (trip ~160°C, recovery ~145°C) indefinitely without damage. These protections are fully specified and tested across the –40°C to +85°C operating range.
What external capacitors are mandatory for stable operation of LTC1517ES5-5#TRMPBF?
LTC1517ES5-5#TRMPBF requires three external capacitors: a 0.1µF ceramic flying capacitor (C1) between C1+ and C1– pins; a ≥3.3µF low-ESR ceramic or tantalum input bypass capacitor (CIN) at VIN; and a ≥3.3µF low-ESR output capacitor (COUT) at VOUT. Using smaller or higher-ESR values degrades ripple, efficiency, and transient response.
Can LTC1517ES5-5#TRMPBF be used in applications requiring less than 100mV peak-to-peak output ripple?
Yes, LTC1517ES5-5#TRMPBF can achieve <100mVP-P ripple with appropriate capacitor selection. At VIN = 3V and 20mA load, 75mVP-P is typical with 6.8µF COUT. For <2mVP-P, the datasheet shows a low-noise configuration using dual 1µF caps, 470Ω RC filter, and discrete transistor post-regulation-demonstrated in Typical Application TA04a.
Is LTC1517ES5-5#TRMPBF pin-compatible with other members of the LTC151x family?
No, LTC1517ES5-5#TRMPBF is not pin-compatible with most LTC151x variants. Its 5-pin SOT-23 pinout (VIN, GND, VOUT, C1+, C1–) differs from LTC1522 (8-pin MSOP with SHDN), LTC1516 (same package but different internal architecture), and LTC1514/LTC1515 (different pin functions and output configurations). Always verify pin mapping against the specific part's datasheet before substitution.
LTC1517ES5-5#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 20mA
- Frequency - Switching:
- 800kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LTC1517ES5-5#TRMPBF FAQ
1.How can I place an order for LTC1517ES5-5#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1517ES5-5#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 LTC1517ES5-5#TRMPBF reliable?
The price and inventory of LTC1517ES5-5#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1517ES5-5#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC1517ES5-5#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1517ES5-5#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1517ES5-5#TRMPBF?
LTC1517ES5-5#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1517ES5-5#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 LTC1517ES5-5#TRMPBF?
For technical support, including LTC1517ES5-5#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1517ES5-5#TRMPBF requirements.
6.How does Aetrix verify that LTC1517ES5-5#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC1517ES5-5#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 LTC1517ES5-5#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC1517ES5-5#TRMPBF?
All LTC1517ES5-5#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1517ES5-5#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 LTC1517ES5-5#TRMPBF part is unused and in its original packaging.
Return procedure for LTC1517ES5-5#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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