LTC1157, LTC-1157CS8, LTC1157CS8PBF Selling Leads, Datasheet
MFG:LTNEAR Package Cooled:SOP-8 D/C:09+
LTC1157, LTC-1157CS8, LTC1157CS8PBF Datasheet download
Part Number: LTC1157
MFG: LTNEAR
Package Cooled: SOP-8
D/C: 09+
LTC1157, LTC-1157CS8, LTC1157CS8PBF
- Table of contents:
Info of LTC1157
Info of LTC-1157CS8
Info of LTC1157CS8PBF
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About LTC1157
PDF/DataSheet Download
Datasheet: LTC1157
File Size: 227137 KB
Manufacturer: Linear
Download : Click here to Download
About LTC0157
PDF/DataSheet Download
Datasheet: LTC0157
File Size: 163926 KB
Manufacturer: ETC [ETC]
Download : Click here to Download
About LTC0157
PDF/DataSheet Download
Datasheet: LTC0157
File Size: 163926 KB
Manufacturer: ETC [ETC]
Download : Click here to Download
LTC1157 General Description
The LTC1157 dual 3.3V micropower MOSFET gate driver makes it possible to switch either supply or ground reference loads through a low RDS(ON) N-channel switch (N-channel switches are required at 3.3V because Pchannel MOSFETs do not have guaranteed RDS(ON) with VGS £ 3.3V). The LTC1157 internal charge pump boosts the gate drive voltage 5.4V above the positive rail (8.7V above ground), fully enhancing a logic level N-channel switch for 3.3V high-side applications and a standard Nchannel switch for 3.3V low-side applications.
The gate drive voltage at 5V is typically 8.8V above supply (13.8V above ground), so standard N-channel MOSFET switches can be used for both high-side and low-side applications. Micropower operation, with 3mA standby current and 80mA operating current, makes the LTC1157 well suited for battery-powered applications. The LTC1157 is available in both 8-pin DIP and SOIC.
LTC1157 Maximum Ratings
Supply Voltage ........................................... 0.3V to 7V
Any Input Voltage ............. (VS + 0.3V) to (GND 0.3V)
Any Output Voltage ............. (VS + 12V) to (GND 0.3V)
Current (Any Pin)................................................. 50mA
Operating Temperature Range
LTC1157C............................................... 0°C to 70°C
Storage Temperature Range ................ 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
LTC1157 Features
Allows Lowest Drop 3.3V Supply Switching
Operates on 3.3V or 5V Nominal Supplies
3 Microamps Standby Current
80 Microamps ON Current
Drives Low Cost N-Channel Power MOSFETs
No External Charge Pump Components
Controlled Switching ON and OFF Times
Available in 8-Pin SOIC
Operates on 3.3V or 5V Nominal Supplies
3 Microamps Standby Current
80 Microamps ON Current
Drives Low Cost N-Channel Power MOSFETs
No External Charge Pump Components
Controlled Switching ON and OFF Times
Available in 8-Pin SOIC
LTC1157 Typical Application
Notebook Computer Power Management
Palmtop Computer Power Management
P-Channel Switch Replacement
Battery Charging and Management
Mixed 5V and 3.3V Supply Switching
Stepper Motor and DC Motor Control
Cellular Telephones and Beepersc
Palmtop Computer Power Management
P-Channel Switch Replacement
Battery Charging and Management
Mixed 5V and 3.3V Supply Switching
Stepper Motor and DC Motor Control
Cellular Telephones and Beepersc
LTC1157 Connection Diagram
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