MFG:Linear Technology Category:Integrated Circuits (ICs) Package Cooled:SOP D/C:0512+
LTC1824CGW, LTC1840CG, LTC1840CGN Datasheet download
Category: Integrated Circuits (ICs)
MFG: Linear Technology
Package Cooled: SOP
D/C: 0512+
Description: IC DUAL FAN CONTROLLER 16-SSOP
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PDF/DataSheet Download
Datasheet: LTC0157
File Size: 163926 KB
Manufacturer: ETC [ETC]
Download : Click here to Download
PDF/DataSheet Download
Datasheet: LTC1840CGN
File Size: 208142 KB
Manufacturer: LINER [Linear Technology]
Download : Click here to Download
PDF/DataSheet Download
Datasheet: LTC1840CGN
File Size: 208142 KB
Manufacturer: LINER [Linear Technology]
Download : Click here to Download
| Technical/Catalog Information | LTC1840CGN |
| Vendor | Linear Technology |
| Category | Integrated Circuits (ICs) |
| Applications | Fan Controller |
| Number of Outputs | 2 |
| Voltage - Supply | 2.7 V ~ 5.75 V |
| Voltage - Load | - |
| Current - Output | 10mA |
| Operating Temperature | 0°C ~ 70°C |
| Package / Case | 16-SSOP |
| Packaging | Tube |
| Drawing Number | 161; 05-08-1641; GN; 16. 28 |
| Lead Free Status | Contains Lead |
| RoHS Status | RoHS Non-Compliant |
| Other Names | LTC1840CGN LTC1840CGN |
The LTC®1840 is a fan controller with two 8-bit current output DACs, two tachometer interfaces, and four general purpose I/O (GPIO) pins. It operates from a single supply with a range of 2.7V to 5.75V. A current output DAC is used to control an external switching regulator, which controls the fan speed. A current output DAC and tachometer allow a controller to form a closed control loop on fan velocity. The GPIO pins can be used as digital inputs or open drain pull-down outputs.
The part features a simple 2-wire I2C and SMBus compatible serial interface that allows communication between many devices. The interface includes a fault status register that reflects the state of the part and which can be polled to find the cause of a fault condition. Other operational characteristics of the part, such as DAC output currents, GPIO modes, and tachometer frequency, are also programmed through the serial interface. Two address pins provide nine possible device addresses.
The BLAST pin is provided to force the DAC output currents to program the maximum regulator output voltages through a single pin and gate the operation of the serial access timer.
VCC to GND .................................................... 0.3 to 6V
A0, A1 ............................................. 0.3 to (VCC + 0.3V)
IDACOUTA, IDACOUTB ................... 0.3 to (VCC + 0.75V)
All other pins ................................................. 0.3 to 6V
Operating Temperature
LTC1840C ............................................... 0°C to 70°C
LTC1840I.............................................40°C to 85°C
Storage Temperature Range ..............65°C to 125°C
Lead Temperature (Soldering, 10 sec).................. 300°C
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