LT3502/LT3502A - 1.1MHz/2.2MHz, 500mA Step-Down Regulators in 2mm × 2mm DFN and MS10
The LT®3502/LT3502A are current mode PWM step-down DC/DC converters with an internal 500mA power switch, in tiny 8-lead 2mm × 2mm DFN and 10-lead MS10 packages. The wide input voltage range of 3V to 40V makes the LT3502/LT3502A suitable for regulating power from a wide variety of sources, including 24V industrial supplies and automotive batteries. Its high operating frequency allows the use of tiny, low cost inductors and capacitors, resulting in a very small solution. Constant frequency above the AM band avoids interfering with radio reception, making the LT3502A particularly suitable for automotive applications.
Cycle-by-cycle current limit and frequency foldback provide protection against shorted outputs. Soft-start and frequency foldback eliminates input current surge during start-up. DA current sense provides further protection in fault conditions. An internal boost diode reduces component count.
Features- 3V to 40V Input Voltage Range
- 500mA Output Current
- Switching Frequency: 2.2MHz (LT3502A), 1.1MHz (LT3502)
- 800mV Feedback Voltage
- Short-Circuit Robust
- Soft-Start
- Low Shutdown Current: <2μA
- Internally Compensated
- Internal Boost Diode
- Thermally Enhanced 2mm × 2mm 8-Lead DFN and 10-Lead MS10 Package
Typical Application
 | Applications- Automotive Systems
- Battery-Powered Equipment
- Wall Transformer Regulation
- Distributed Supply Regulation
Packaging
 |
Order Information
| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
|---|
| LT3502AEDC#PBF | 2x2 DFN-8 | E | $2.79 | |
| LT3502AEDC#TRMPBF | 2x2 DFN-8 | E | $2.79 | $2.00 |
| LT3502AEDC#TRPBF | 2x2 DFN-8 | E | $2.79 | $1.95 |
| LT3502AEMS#PBF | MS-10 | E | $2.93 | $2.05 |
| LT3502AEMS#TRPBF | MS-10 | E | | $2.11 |
| LT3502AIDC#PBF | 2x2 DFN-8 | I | $3.34 | |
| LT3502AIDC#TRMPBF | 2x2 DFN-8 | I | $3.34 | $2.39 |
| LT3502AIDC#TRPBF | 2x2 DFN-8 | I | $3.34 | $2.34 |
| LT3502AIMS#PBF | MS-10 | I | $3.51 | $2.46 |
| LT3502AIMS#TRPBF | MS-10 | I | | $2.52 |
| LT3502EDC#PBF | 2x2 DFN-8 | E | $2.79 | |
| LT3502EDC#TRMPBF | 2x2 DFN-8 | E | $2.79 | $2.00 |
| LT3502EDC#TRPBF | 2x2 DFN-8 | E | $2.79 | $1.95 |
| LT3502EMS#PBF | MS-10 | E | $2.93 | $2.05 |
| LT3502EMS#TRPBF | MS-10 | E | | $2.11 |
| LT3502IDC#PBF | 2x2 DFN-8 | I | $3.34 | |
| LT3502IDC#TRMPBF | 2x2 DFN-8 | I | $3.34 | $2.39 |
| LT3502IDC#TRPBF | 2x2 DFN-8 | I | $3.34 | $2.34 |
| LT3502IMS#PBF | MS-10 | I | $3.51 | $2.46 |
| LT3502IMS#TRPBF | MS-10 | I | | $2.52 |
Demo Boards
| Part Number | Description | Price |
|---|
| DC1089B | LT3502AEDC Demo Board | 7V to 40V input to 5V at 500mA | $75.00 |
| DC1221A | LT3502EDC Demo Board | 1.1MHz, 500mA Step-Down Reg in DFN | $75.00 |
| DC1221B | LT3502EDC Demo Board | 1.1MHz,500mA Step-Down Regulator | $75.00 |
DatasheetReliability DataPress ReleaseLTspice | Related Product- LTC3630 - High Efficiency, 65V 500mA Synchronous Step-Down Converter
- LT1763 - 500mA, Low Noise, LDO Micropower Regulators
- LT1933 - 600mA, 500kHz Step-Down Switching Regulator in SOT-23
- LT3470 - Micropower Buck Regulator with Integrated Boost and Catch Diodes
- LTC3115-1 - 40V, 2A Synchronous Buck-Boost DC/DC Converter
- LT1761 - 100mA, Low Noise, LDO Micropower Regulators in TSOT-23
- LT3080 - Adjustable 1.1A Single Resistor Low Dropout Regulator
- LT3970 Series - 40V, 350mA Step-Down Regulator with 2.5μA Quiescent Current and Integrated Diodes
- LT3990 - 62V, 350mA Step-Down Regulator with 2.5μA Quiescent Current and Integrated Diodes
- LT8610 - 42V, 2.5A Synchronous Step-Down Regulator with 2.5μA Quiescent Current
|
