LTC1502-3.3

PRODUCTION

Single Cell to 3.3V Regulated Charge Pump DC/DC Converter

Part Models: 6
1ku List Price: Starting From $2.56

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Overview

Input Voltage Range: 0.9V to 1.8V
0.9V Guaranteed Start-Up Voltage
Regulated Output Voltage: 3.3V ±4%
Output Current: 10mA (V_IN ≥ 1V)
No Inductors
Shutdown Disconnects Load from V_IN
Low Operating Current: 40µA
Low Shutdown Current: 5µA
Short-Circuit and Overtemperature Protected
Application Circuit Fits in <0.125in² PCB Area
Available in 8-Pin MSOP and SO Packages

The LTC1502-3.3 is a quadrupler charge pump DC/DC converter that produces a regulated 3.3V output from a single alkaline cell input. It requires only five small external capacitors—no inductors are required. Low supply current (40µA typical, 5µA in shutdown) and minimal external components make the LTC1502-3.3 ideal for space and power conscious single-cell applications. The total printed circuit board area of the circuit shown below is less than 0.125in².

Forcing the C1⁻/SHDN pin through an external resistive pull-down puts the part into shutdown mode. During shutdown, the internal oscillator is stopped and the load is disconnected from V_IN. An internal pull-up current on the C1⁻/SHDN pin forces the part back into normal operation once the pull-down resistance is removed.

The LTC1502-3.3 is short-circuit protected and survives an indefinite V_OUT short to ground. The LTC1502-3.3 is available in 8-pin MSOP and SO packages.

Applications

Pagers
Battery Backup Supplies
Portable Electronic Equipment
Handheld Medical Instruments
Glucose Meters

Part Models: 6
1ku List Price: Starting From $2.56

Documentation

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
LTC1502CMS8-3.3#PBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1502CMS8-3.3#TRPBF	8-Lead MSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1502CS8-3.3#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1502CS8-3.3#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1502IS8-3.3#PBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1502IS8-3.3#TRPBF	8-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Jun 5, 2024 - 24_0004 Epoxy Change from Henkel 8290 to 8290A for MSOP (3)
		PCN24_0004_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC1502CMS8-3.3#PBF	PRODUCTION
LTC1502CMS8-3.3#TRPBF	PRODUCTION
Feb 3, 2020 - 20_0128 Laser Top Mark for 8 Lead MSOP Packages Assembled in ADPG and UTAC
		PCN20_0128_Form Material_Report
LTC1502CMS8-3.3#PBF	PRODUCTION
LTC1502CMS8-3.3#TRPBF	PRODUCTION
Dec 14, 2023 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2)
		PCN22_0255_Form Material_Report Qualification Results Summary Delta Qualification Matrix
LTC1502CS8-3.3#PBF	PRODUCTION
LTC1502CS8-3.3#TRPBF	PRODUCTION
LTC1502IS8-3.3#PBF	PRODUCTION
LTC1502IS8-3.3#TRPBF	PRODUCTION
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM
		PCN21_0026_Form Material_Report Delta Qualification Matrix
LTC1502CS8-3.3#PBF	PRODUCTION
LTC1502CS8-3.3#TRPBF	PRODUCTION
LTC1502IS8-3.3#PBF	PRODUCTION
LTC1502IS8-3.3#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Software Resources

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Tools & Simulations

LTspice 1

LTC1502-3.3 - Inductorless (Charge Pump) DC/DC Converters

Models for the following parts are available in LTspice:

LTC1502-3.3

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.