LTC1710 Linear Technology, LTC1710 Datasheet

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LTC1710

Manufacturer Part Number
LTC1710
Description
SMBus Dual Monolithic High Side Switch
Manufacturer
Linear Technology
Datasheet

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APPLICATIONS
FEATURES
TYPICAL
Two 0.4 /300mA N-Channel Switches
Available in MS8 and SO-8 Packages
SMBus and I
0.6V V
Low Standby Current: 14 A
Separate Drain Connection to SW0
Three Addresses from One Three-State Address Pin
Independent Control of Up to Six Switches
Built-In Power-On Reset Timer
Built-In Undervoltage Lockout
Handheld Computer Power Management
Computer Peripheral Control
Laptop Computer Power Plane Switching
Portable Equipment Power Control
Industrial Control Systems
ACPI SMBus Interface
IL
and 1.4V V
FROM SMBus
APPLICATION
(PROGRAMMABLE)
2
C Compatible
U
10 F
IH
CLOCK
DATA
2.7V TO 5.5V
AD1
for DATA and CLK
5
6
3
V
CC
CHARGE
8
SW0
PUMP
SW1
U
LTC1710
4
SW0D
0V TO V
1
CC
2
7
LOAD 1
LOAD 2
10 F
1710 TA01
The LTC
300mA switches that are controlled by a 2-wire SMBus
interface. With a low standby current of 14 A (3.3V), the
LTC1710 operates over an input voltage range of 2.7V to
5.5V while maintaining the SMBus specified 0.6V V
1.4V V
Using the 2-wire interface, CLK and DATA, the LTC1710
follows SMBus’s Send Byte Protocol to independently
control the two 0.4 internal N-channel power switches,
which are fully enhanced by onboard charge pumps.
The LTC1710 has one three-state programmable
address pin that allows three different addresses for a total
of six available switches on the same bus. The LTC1710
also features a separate user-controlled drain supply
(SW0D) to Switch 0 so that it can be used to control
SMBus peripherials using a different power supply.
DESCRIPTION
, LTC and LT are registered trademarks of Linear Technology Corporation.
IH
®
input thresholds.
1710 SMBus dual switch has two built-in 0.4 /
500
400
300
200
100
SMBus Dual Monolithic
0
0
T
A
= 25 C
U
Switch Voltage Drop
100
vs Load Current
LOAD CURRENT (mA)
High Side Switch
200
V
V
CC
CC
300
= 2.7V
= 5V
V
CC
= 3.3V
1710 TA02
LTC1710
400
IL
and
1

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LTC1710 Summary of contents

Page 1

... The LTC1710 has one three-state programmable address pin that allows three different addresses for a total of six available switches on the same bus. The LTC1710 also features a separate user-controlled drain supply (SW0D) to Switch 0 so that it can be used to control SMBus peripherials using a different power supply ...

Page 2

... OSC (Note RATINGS Operating Temperature Range LTC1710C................................................ LTC1710I ............................................ – Junction Temperature** ...................................... 125 C + 0.3V Storage Temperature Range .................. – 150 C CC Lead Temperature (Soldering, 10 sec)................... 300 C *Supply rails to DATA and CLK are independent of V **Although the LTC1710 can sustain T ...

Page 3

... Note 4: The oscillator frequency is not tested directly but is inferred from turn-on time. Note 5: SMBus timing specifications are guaranteed but not tested. Note enabled upon receiving the Stop condition from the SMBus master. Note 7: OFF is enabled upon receiving the Stop condition from the SMBus master. LTC1710 MIN TYP MAX ) 200 CC ...

Page 4

... LTC1710 W U TYPICAL PERFOR A CE CHARACTERISTICS Standby Current vs Temperature 3. 2. – 100 0 TEMPERATURE ( C) 1710 G01 Switch R vs Temperature DS(ON) (SO-8 Package) 1 300mA OUT 0.9 0.8 0 2. 3. 0.4 CC 0.3 0.2 0.1 0 – 100 TEMPERATURE ( C) 1710 G04 PIN FUNCTIONS SW0D (Pin 1): Drain Supply of Switch 0. User-program- mable from ...

Page 5

... SU:DAT HD:DAT The protocol that the LTC1710 uses is the Send Byte Pro- tocol. In this protocol, the master first sends out a Start signal by switching the DATA line from high to low while CLK is high. (Because there may be more than one master on the same bus, an arbitration process takes place if two masters attempt to take control of the DATA line simulta- neously ...

Page 6

... LTC1710, even if the address sent by the master matches that of the LTC1710. After reception of the first byte, the slave device (LTC1710) with the matching address then acknowledges the master by pulling the DATA line low before the next rising clock edge ...

Page 7

... The LTC1710 starts up with both gate drives low. An internal power-on reset (POR) signal inhibits operation U TYPICAL APPLICATIONS The LTC1710, when used with the LT switch a regulated 3.3V/300mA supply to a load (Figure 3). Also, with the help of the LT1304-5, the LTC1710 can ...

Page 8

... SMBus Dual High Side Switch Controller PowerPath is a trademark of Linear Technology Corporation. Linear Technology Corporation 8 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 www.linear-tech.com 3. SW0D CLK OUT0 LTC1710 6 DATA AD1 OUT1 100 F 3 GND 499k SENSE ...

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