Details, datasheet, quote on part number: LTC1155CN8
PartLTC1155CN8
CategoryPower Management => Power Distribution/Switches => Power Switches => High Side Switches
TitleHigh Side Switches
DescriptionLTC1155, Dual High Side Micropower N-Ch. MOSFET Driver With Internal Charge Pump
CompanyLinear Technology Corporation
DatasheetDownload LTC1155CN8 datasheet
Cross ref.Similar parts: IR4426, IR4427, IRS2101, IRS2103, IRS2106, IRS2108, IRS2111, IRS21531DPBF, IRS2153DPBF, IRS2183
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Features, Applications
LTC1155 Dual High Side Micropower MOSFET Driver
FEATURES

Fully Enhances N-Channel Power MOSFETs 8A Standby Current 85A ON Current Short-Circuit Protection Wide Power Supply Range: to 18V Controlled Switching ON and OFF Times No External Charge Pump Components Replaces P-Channel High Side MOSFETs Compatible with Standard Logic Families Available 8-Pin SO Package

The LTC1155 dual high side gate driver allows using low cost N-channel FETs for high side switching applications. An internal charge pump boosts the gate above the positive rail, fully enhancing an N-channel MOSFET with no external components. Micropower operation, with 8A standby current and 85A operating current, allows use in virtually all systems with maximum efficiency. Included on-chip is overcurrent sensing to provide automatic shutdown in case of short circuits. A time delay can be added in series with the current sense to prevent false triggering on high in-rush loads such as capacitors and incandescent lamps. The LTC1155 operates off to 18V supply input and safely drives the gates of virtually all FETs. The LTC1155 is well suited for low voltage (battery-powered) applications, particularly where micropower "sleep" operation is required. The LTC1155 is available in both 8-pin PDIP and 8-pin SO packages.

Laptop Power Bus Switching SCSI Termination Power Switching Cellular Phone Power Management P-Channel Switch Replacement Relay and Solenoid Drivers Low Frequency Half H-Bridge Motor Speed and Torque Control

Laptop Computer Power Bus Switch with Short Circuit Protection

Supply Voltage........................................................ 22V Input Voltage...................... (VS +0.3V) to (GND 0.3V) Gate Voltage......................... (VS +24V) to (GND 0.3V) Current (Any Pin).................................................. 50mA Storage Temperature Range................. to 150C

Operating Temperature Range to 125C Lead Temperature Range (Soldering, 10 sec.)...... 300C

The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are to 18V, unless otherwise noted.

SYMBOL VS IQ PARAMETER Supply Voltage Quiescent Current OFF Quiescent Current ON Quiescent Current ON VINH VINL IIN CIN VSEN ISEN VGATE-VS Input High Voltage Input Low Voltage Input Current Input Capacitance Drain Sense Threshold Voltage

Drain Sense Input Current Gate Voltage Above Supply

0V < VSEN = 5V, CGATE = 1000pF Time for VGATE + 2V Time for VGATE = 12V, CGATE = 1000pF Time for VGATE + 5V Time for VGATE + 10V

The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are to 18V, unless otherwise noted.

SYMBOL tOFF PARAMETER Turn OFF Time CONDITIONS = 5V, CGATE = 1000pF Time for VGATE = 12V, CGATE = 1000pF Time for VGATE < 1V tSC Short-Circuit Turn OFF Time = 5V, CGATE = 1000pF Time for VGATE = 12V, CGATE = 1000pF Time for VGATE < 1V Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. MIN LTC1155M TYP MAX LTC1155C/LTC1155I MIN TYP MAX UNITS s

Note 2: Quiescent current OFF is for both channels in OFF condition. Note 3: Quiescent current ON is per driver and is measured independently.

SUPPLY CURRENT (A) SUPPLY CURRENT (A)
INPUT THRESHOLD VOLTAGE (V) DRAIN SENSE THRESHOLD VOLTAGE (V)

 

Related products with the same datasheet
LTC1155CJ8
LTC1155CS8
LTC1155IN8
LTC1155IS8
LTC1155M
LTC1155MJ8
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