Datasheet

LTC4300-1/LTC4300-2
18
430012fb
For more information www.linear.com/LTC4300-1
LINEAR TECHNOLOGY CORPORATION 2004
LT 0414 REV B • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
FAX: (408) 434-0507
www.linear.com/LTC4300-1
relaTeD parTs
Typical applicaTion
PART NUMBER DESCRIPTION COMMENTS
LTC1380/LTC1393 Single-Ended 8-Channel/Differential 4-Channel
Analog Mux with SMBus Interface
Low R
ON
: 35Ω Single-Ended/70Ω Differential, Expandable to 32 Single
or 16 Differential Channels
LTC
1427-50 Micropower, 10-Bit Current Output DAC with
SMBus Interface
Precision
50µA ± 2.5% Tolerance Over Temperature, 4 Selectable SMBus
Addresses, DAC Powers Up at Zero or Mid-Scale
LTC1623 Dual HIGH Side Switch Controller with SMBus
Interface
8 Selectable Addresses/16-Channel Capability
LTC1663 SMBus Interface 10-Bit Rail-to-Rail Micropower DAC DNL < 0.75LSB Max, 5-Lead SOT-23 Package
LTC1694/LTC1694-1 SMBus Accelerator Improved SMBus/I
2
C Rise time, Ensures Data Integrity with Multiple
SMBus/I
2
C Devices
LT1786F SMBus Controlled CCFL Switching Regulator 1.25A, 200kHz, Floating or Grounded Lamp Configurations
LTC1695 SMBus/I
2
C Fan Speed Controller in ThinSOT 0.75Ω PMOS 180mA Regulator, 6-Bit DAC
LTC1840 Dual I
2
C Fan Speed Controller Tw o 100µA 8-Bit DACs, Tw o Tach Inputs, Four GPIOs
Figure 11. 5V to 3.3V Level Translator
V
CC2
GND
SDAOUT
SCLOUT
SDAIN
SCLIN
ACC
V
CC
R2
10k
R3
10k
CARD_V
CC
, 3V
CARD_SCL
CARD_SDA
C2
0.01µF
C1
0.01µF
R1
10k
V
CC
5V
R4
10k
LTC4300-2
U1
SCL
SCL
430012 F11
NOTE: APPLICATION ASSUMES BUS CAPACITANCES WITHIN “PROPER OPERATION” REGION OF FIGURES 3 AND 4
Figure 10. System with Disparate V
CC
Voltages
R1
10k
V
CC
R2
10k
R
DROP
V
CC_LOW
SDA
SCL
430012 F10
R4
10k
R5
10k
R3
10k
SDAIN
ENABLE
SCLIN
LTC4300-1
U1
V
CC
GND
SCL2
SDA2
SDAOUT
SCLOUT
READY
C2
0.01µF
NOTE: APPLICATION ASSUMES BUS CAPACITANCES WITHIN “PROPER OPERATION” REGION OF FIGURES 3 AND 4