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Analog Devices Inc. LTC1517ES5-5#TRPBF
- Part No.:
- LTC1517ES5-5#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LTC1517ES5-5#TRPBF.pdf
- Description:
- IC REG CHARGE PUMP 5V SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:314
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Product details
Overview
LTC1517ES5-5#TRPBF 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 low-power battery-operated handheld instruments.
For engineers reviewing the LTC1517ES5-5#TRPBF datasheet, LTC1517ES5-5#TRPBF pinout, LTC1517ES5-5#TRPBF application, or LTC1517ES5-5#TRPBF equivalent, key selection criteria include ultralow quiescent current, fixed 5V output regulation, thermal and short-circuit protection, SOT-23 footprint compatibility, and capacitor-based topology eliminating inductors.
Technical Context
The LTC1517ES5-5#TRPBF 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 during fault conditions. The device requires only three external capacitors: 0.1µF flying capacitor (C1), and ≥3.3µF low-ESR bypass capacitors at VIN and VOUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±4% - tightly regulated rail suitable for powering logic, sensors, or analog circuitry requiring stable 5V. |
| Input Voltage Range | 2.7V to 5V - compatible with single Li-ion, Li-polymer, or dual alkaline/NiMH battery stacks. |
| No-Load Supply Current | 6µA typ - enables multi-year operation in always-on, ultra-low-power monitoring systems. |
| Max Output Current | 20mA at VIN ≥ 3V - sufficient for low-duty-cycle microcontrollers, EEPROMs, or small LCD backlights. |
| Switching Frequency | 800kHz - enables use of tiny 0.1µF ceramic flying capacitor and minimizes EMI filtering burden. |
| Output Ripple | 75mVP-P at 20mA - manageable with standard 6.8µF low-ESR ceramic output capacitor. |
| Operating Temp Range | –40°C to +85°C - qualified for extended industrial environments without derating. |
Pinout & Package
Package: 5-lead plastic SOT-23 (SC-74A), 2.80–3.00 mm × 1.90 mm × 1.10 mm, 256°C/W junction-to-ambient thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply connection | Accepts 2.7V–5V; must be bypassed with ≥3.3µF low-ESR capacitor adjacent to pin for stability and ripple suppression. |
| GND (Pin 2) | Power ground reference | Primary return path for charge pump switching current; requires low-impedance connection to PCB ground plane. |
| VOUT (Pin 3) | Regulated 5V output | Delivers up to 20mA; requires ≥3.3µF low-ESR capacitor directly at pin to maintain regulation and minimize ripple. |
| C1+ (Pin 4) | Flying capacitor positive terminal | Connects to + side of 0.1µF ceramic flying capacitor; carries high-frequency switching current during charge phase. |
| C1– (Pin 5) | Flying capacitor negative terminal | Connects to – side of 0.1µF ceramic flying capacitor; completes charge pump switching loop with C1+. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow quiescent current | 6µA typical no-load ICC enables >10-year battery life in intermittent-sensing applications. |
| Inductorless topology | Eliminates magnetic components, reducing BOM cost, board area (0.045 in² total), and EMI concerns. |
| Thermal and short-circuit protection | Auto-recovers from indefinite VOUT shorts without latch-up or damage, supporting robust field deployment. |
| Burst Mode™ regulation | Dynamically enables/disables 800kHz charge pump to maintain regulation while minimizing average current at light loads. |
| Fixed 5V output accuracy | ±4% over full temperature and load range ensures reliable interface with 5V-tolerant peripherals without external trimming. |
Applications
| Cellular Telephones | Battery-Operated Equipment |
|---|---|
Use Scenario: Powering SIM card interface and backlight driver in GSM/GPRS handsets with single-cell Li-ion battery. IC Role / Device Role / Timing Role: Regulated 5V charge pump supplying isolated logic-level translation and LED bias. Use Value: Enables compact design with no inductor, extends talk time via 6µA quiescent current, and survives accidental VOUT shorts during connector insertion. | Use Scenario: Providing clean 5V rail for microcontroller and sensor subsystem in portable gas detector. IC Role / Device Role / Timing Role: Primary DC/DC converter generating stable 5V from declining 2.7–4.2V battery voltage. Use Value: Maintains regulation across full battery discharge curve while consuming <10µA average current in sleep mode. |
| Handheld Instruments | PCMCIA Supplies |
Use Scenario: Generating 5V for ADC reference and op-amp rails in handheld multimeter with AA/AAA battery pack. IC Role / Device Role / Timing Role: Low-noise, capacitor-based voltage booster replacing inefficient linear regulators. Use Value: Achieves >85% efficiency at 10mA load and fits within tight 5mm × 3mm board space constraint. | Use Scenario: Supplying 5V to PCMCIA Type II card slot in industrial data logger. IC Role / Device Role / Timing Role: Dedicated charge pump delivering compliant 5V±5% per PCMCIA spec under dynamic load transients. Use Value: Meets PCMCIA voltage tolerance and transient response requirements using only three external capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar regulated charge pump applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX680ESA+ | Unregulated 2× voltage doubler (VOUT ≈ 2×VIN); no internal feedback or regulation circuitry. | Requires external LDO or shunt regulator for stable 5V; higher system component count and board area. | Select when precise 5V regulation is unnecessary and maximum simplicity/cost reduction is prioritized over output accuracy. |
| LTC1522EMS8-5#PBF | Same core functionality plus active shutdown (SHDN pin), MS8 package (8-pin MSOP), higher 25mA IOUT capability. | Enables power sequencing control and fits designs requiring higher output current or layout flexibility beyond SOT-23 constraints. | Select when system-level power management requires enable control or >20mA sustained load capability is needed. |
Compared with MAX680ESA+ and LTC1522EMS8-5#PBF, the LTC1517ES5-5#TRPBF provides fixed 5V regulation in the smallest possible footprint (SOT-23) with lowest quiescent current-making it optimal for space- and energy-constrained applications where precision and simplicity are critical.
Availability
LTC1517ES5-5#TRPBF is available at Aetrix Electronics and suitable for cellular telephones, handheld instruments, and battery-operated equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC1517ES5-5#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 its legacy precision analog and power management portfolio with full datasheet, reliability, and support continuity.
The LTC1517ES5-5#TRPBF belongs to Linear's micropower charge pump family, designed specifically for ultra-low-power, inductorless DC/DC conversion in portable and space-constrained electronics.
FAQ
What is the minimum input voltage required for the LTC1517ES5-5#TRPBF to deliver full rated output current?
The LTC1517ES5-5#TRPBF delivers up to 20mA output current only when input voltage is ≥3V. At lower inputs (2.7V ≤ VIN < 3V), maximum output current is limited to 10mA to maintain regulation and thermal safety. This behavior is specified in the Electrical Characteristics table and confirmed in Typical Performance graphs.
Does the LTC1517ES5-5#TRPBF require an external shutdown control signal?
No, the LTC1517ES5-5#TRPBF does not include a shutdown pin or enable function. It operates continuously when powered within its input voltage range. For applications requiring controlled on/off sequencing, consider the pin-compatible LTC1522EMS8-5#PBF, which adds an active-low SHDN input.
Can the LTC1517ES5-5#TRPBF be used to generate a negative output voltage?
Yes-the LTC1517ES5-5#TRPBF can be configured in an inverting topology to generate a negative rail (e.g., –1.4V to –3.5V at up to 5mA), as shown in Typical Application TA05. This requires external diodes and resistors but leverages the same internal charge pump structure without modification to the LTC1517ES5-5#TRPBF itself.
What is the recommended flying capacitor value and type for the LTC1517ES5-5#TRPBF?
The recommended flying capacitor for the LTC1517ES5-5#TRPBF is 0.1µF ceramic (X7R or better), placed as close as possible to pins C1+ and C1–. Ceramic is mandatory for low ESR and stable capacitance over temperature; tantalum or electrolytic types are unsuitable due to high ESR and instability at 800kHz switching frequency.
How does thermal protection operate in the LTC1517ES5-5#TRPBF during continuous short-circuit conditions?
During continuous VOUT-to-GND short, the LTC1517ES5-5#TRPBF draws 50–200mA from VIN, raising junction temperature until thermal shutdown activates at ~160°C. The part then disables the charge pump, cools to ~145°C, and automatically re-enables-cycling indefinitely without damage or latch-up, as verified in Absolute Maximum Ratings and Applications Information sections.
LTC1517ES5-5#TRPBF 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#TRPBF FAQ
1.How can I place an order for LTC1517ES5-5#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1517ES5-5#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 LTC1517ES5-5#TRPBF reliable?
The price and inventory of LTC1517ES5-5#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1517ES5-5#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1517ES5-5#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1517ES5-5#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1517ES5-5#TRPBF?
LTC1517ES5-5#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1517ES5-5#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 LTC1517ES5-5#TRPBF?
For technical support, including LTC1517ES5-5#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1517ES5-5#TRPBF requirements.
6.How does Aetrix verify that LTC1517ES5-5#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1517ES5-5#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 LTC1517ES5-5#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1517ES5-5#TRPBF?
All LTC1517ES5-5#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1517ES5-5#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 LTC1517ES5-5#TRPBF part is unused and in its original packaging.
Return procedure for LTC1517ES5-5#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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