LTC1751
LTC1751
PRODUCTIONMicropower, Regulated Charge Pump DC/DC Converters
- Part Models
- 6
- 1ku List Price
- Starting From $3.61
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Overview
- 5V Output Current: 100mA (VIN ≥ 3V)
- 3.3V Output Current: 80mA (VIN ≥ 2.5V)
- Ultralow Power: 20µA Quiescent Current
- Regulated Output Voltage: 3.3V ±4%, 5V ±4%, ADJ
- VIN Range: 2V to 5.5V
- 800kHz Switching Frequency
- No Inductors
- Very Low Shutdown Current: <2µA
- Shutdown Disconnects Load from VIN
- PowerGood/Undervoltage Output
- Adjustable Soft-Start Time
- Short-Circuit/Thermal Protection
- Available in 8-Pin MSOP
The LTC1751 family are micropower charge pump DC/DC converters that produce a regulated output voltage at up to 100mA. The input voltage range is 2V to 5.5V. Extremely low operating current (20µA typical with no load) and low external parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) make them ideally suited for small, battery-powered applications.
The LTC1751 family operate as Burst Mode™ switched capacitor voltage doublers to achieve ultralow quiescent current. They have thermal shutdown capability and can survive a continuous short circuit from Vout to GND. The PGOOD pin on the LTC1751-3.3 and LTC1751-5 indicates when the output voltage has reached its final value and if the output has an undervoltage fault condition. The FB pin of the adjustable LTC1751 can be used to program the desired output voltage or current. An optional soft-start capacitor may be used at the SS pin to prevent excessive inrush current during start-up.
The LTC1751 family is available in an 8-pin MSOP package.
Applications
- Li-Ion Battery Backup Supplies
- Local 3V and 5V Conversion
- Smart Card Readers
- PCMCIA Local 5V Supplies
- White LED Backlighting
Documentation
Data Sheet 1
User Guide 1
Video 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LTC1751EMS8#PBF | 8-Lead MSOP | ||
| LTC1751EMS8#TRPBF | 8-Lead MSOP | ||
| LTC1751EMS8-3.3#PBF | 8-Lead MSOP | ||
| LTC1751EMS8-3.3#TRPBF | 8-Lead MSOP | ||
| LTC1751EMS8-5#PBF | 8-Lead MSOP | ||
| LTC1751EMS8-5#TRPBF | 8-Lead MSOP |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Jun 5, 2024 - 24_0004 Epoxy Change from Henkel 8290 to 8290A for MSOP (3) |
||
| LTC1751EMS8#PBF | PRODUCTION | |
| LTC1751EMS8#TRPBF | PRODUCTION | |
| LTC1751EMS8-3.3#PBF | PRODUCTION | |
| LTC1751EMS8-3.3#TRPBF | PRODUCTION | |
| LTC1751EMS8-5#PBF | PRODUCTION | |
| LTC1751EMS8-5#TRPBF | PRODUCTION | |
|
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC |
||
| LTC1751EMS8#PBF | PRODUCTION | |
| LTC1751EMS8#TRPBF | PRODUCTION | |
| LTC1751EMS8-3.3#PBF | PRODUCTION | |
| LTC1751EMS8-3.3#TRPBF | PRODUCTION | |
| LTC1751EMS8-5#PBF | PRODUCTION | |
| LTC1751EMS8-5#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Can't find the software or driver you need?
Request a Driver/SoftwareTools & Simulations
LTspice
Models for the following parts are available in LTspice:
- LTC1751
- LTC1751-3.3
- LTC1751-5
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Evaluation Kits
LTC1751EMS8-5 | Regulated Charge Pump DC/DC Converter, 3V to 5.5V Input, 5VOUT @ 100mA
Resources
LTC1751EMS8-3.3 | Regulated Charge Pump DC/DC Converter, 2V to 4.5V Input, 3.3VOUT @ 40mA
Resources
LTC1751EMS8 | Regulated Charge Pump DC/DC Converter, 2.5V to 4.5V Input, 4VOUT @ 75mA