LTC1470
PRODUCTIONSingle and Dual PCMCIA Protected 3.3V/5V VCC Switches
- Part Models
- 4
- 1ku List Price
- Starting From $3.91
Overview
- Single 3.3V/5V Switch in 8-Pin SO Package
- Dual 3.3V/5V Switch in 16-Pin SO Package
- Built-In Current Limit and Thermal Shutdown
- Built-In Charge Pumps (No 12V Required)
- Extremely Low RDS(ON) MOSFET Switches
- Output Current Capability: 1A
- Inrush Current Limited (Drives 150µF Loads)
- Quiescent Current in Standby: 1µA
- No Parasitic Body Diodes
- Built-In XOR Function Eliminates “Glue” Logic
- Break-Before-Make Switching
- Controlled Rise and Fall Times
The LTC1470 switches the VCC pins of a Personal Computer Memory Card International Association (PCMCIA) card slot between three operating states: OFF, 3.3V and 5V. Two low RDS(ON) N-channel power MOSFETs are driven by a built-in charge pump which generates a voltage higher than the supply voltage to fully enhance each switch when selected by the input control logic.
The LTC1470 inputs are compatible with industry standard PCMCIA controllers. A built-in XOR ensures that both switches are never on at the same time. This function also makes the LTC1470 compatible with both active-low and active-high controllers (see Applications Information section). The switch rise times are controlled to eliminate power supply glitching.
The LTC1470 features built-in SafeSlot™ current limit and thermal shutdown. The output is limited to 1A during short circuit to ground but 2A of peak operating current is allowed.
The LTC1471 is a dual version of the LTC1470 and is available in a 16-pin SO package.
Applications
- Notebook Computers
- Palmtop Computers
- Pen-Based Computers
- Handi-Terminals
- PC Card Reader/Writers
- 3.3V/5V Power Supply Switch
Documentation
Data Sheet 1
Application Note 1
Design Note 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 |
|---|---|---|---|
| LTC1470CS8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1470CS8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1470ES8#PBF | 8-Lead SOIC (Narrow 0.15 Inch) | ||
| LTC1470ES8#TRPBF | 8-Lead SOIC (Narrow 0.15 Inch) |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Dec 14, 2023 - 22_0255 Epoxy Change from Henkel 8290 to 8290A for 8-Lead SOIC Package (PCN part 2 of 2) |
||
| LTC1470CS8#PBF | PRODUCTION | |
| LTC1470CS8#TRPBF | PRODUCTION | |
| LTC1470ES8#PBF | PRODUCTION | |
| LTC1470ES8#TRPBF | PRODUCTION | |
|
Jun 16, 2021 - 21_0026 Laser Top Mark for 8SOICN Assembled in ADPG, UTL and CRM |
||
| LTC1470CS8#PBF | PRODUCTION | |
| LTC1470CS8#TRPBF | PRODUCTION | |
| LTC1470ES8#PBF | PRODUCTION | |
| LTC1470ES8#TRPBF | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.