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PDF LTC1623IS8 Data sheet ( Hoja de datos )
| Número de pieza | LTC1623IS8 | |
| Descripción | SMBus Dual High Side Switch Controller | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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LTC1623
SMBus Dual High Side
Switch Controller
FEATURES
s SMBus and I2C Compatible
s Built-In Charge Pumps Drive N-Channel Switches
s 16 Available Switches on the Same Bus
s 0.6V VIL and 1.4V VIH for DATA and CLK
s Available in 8-Lead MSOP and S0 Packages
s Low Standby Current: 14µA
s Eight Addresses from Two Three-State Address Pins
s Internal Power-On Reset Timer
s Internal Undervoltage Lockout
s No Need for External Pull-Up Resistors at Output
s No Need for Secondary Power Source
U
APPLICATIONS
s Computer Peripheral Control
s Laptop Computer Power Plane Switching
s Portable Equipment Power Control
s Industrial Control Systems
s Handheld Equipment
DESCRIPTION
The LTC®1623 SMBus switch controller is a slave device
that controls two high-side N-channel MOSFETs on either
the SMBus or the I2C bus. The LTC1623 operates with an
input voltage from 2.7V to 5.5V with a low standby current
of 14µA (at 3.3V). In accordance with the SMBus specifi-
cation, the LTC1623 maintains the 0.6V VIL and 1.4V VIH
input thresholds throughout the supply voltage range.
Using the 2-wire interface, CLK and DATA, the LTC1623
monitors the bus for a start condition (DATA going from
high to low while CLK is high). Once detected, the LTC1623
compares its address with the first (address) byte sent
over the bus from the master. If matched, the LTC1623 will
execute the second (command) byte from the master and
independently control the built-in charge pumps to drive
two external switches.
The LTC1623 has two three-state programmable address
pins, thus allowing eight different addresses and a total of
sixteen available switches on the same bus.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
(FROM
SMBus)
10µF
(PROGRAMMABLE)
* SILICONIX Si69260Q
VCC
2.7V TO 5.5V
VCC
CLK GA
DATA
GB
LTC1623
AD0
AD1
GND
Q1
LOAD1
*
Q2
LOAD2
1623 TA01
Gate Drive Voltage
14
TJ = 25°C
12
10
8
6
4
2
0
012
34
56
SUPPLY VOLTAGE (V)
1623 G01
1
1 page  
LTC1623
TYPICAL PERFORMANCE CHARACTERISTICS
GA, GB Output Voltage
16
VCC = 5V
14
12
10
8
6
4
2
0
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
1623 G08
DATA VOL vs Temperature
500
450 VCC = 5V
I PULLUP = 350µA
400
350
300
250
200
150
100
50
0
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
1623 G09
VGS vs Temperature
7
6 VCC = 5.5V
5
VCC = 3.3V
4
VCC = 2.7V
3
2
1
0
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
1623 G10
Gate Drive Current
100
VCC = 6V
10
VCC = 3.3V
VCC = 2.7V
1
VCC = 5V
0.1
0
12 345 67
GATE VOLTAGE ABOVE SUPPLY (VGS)
1623 G11
5
5 Page 
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
LTC1623
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
0.189 – 0.197*
(4.801 – 5.004)
8 765
0.228 – 0.244
(5.791 – 6.197)
0.150 – 0.157**
(3.810 – 3.988)
0.010
(0.254
–
–
0.020
0.508)
×
45°
0.008 – 0.010
(0.203 – 0.254)
1
0°– 8° TYP
0.053 – 0.069
(1.346 – 1.752)
2
0.016 – 0.050
0.406 – 1.270
0.014 – 0.019
(0.355 – 0.483)
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
34
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
TYP
SO8 0996
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LTC1623IS8.PDF ] | |
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