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參數(shù)資料
| 型號(hào)： | LTC1840IGN |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Dual Fan Controller with 2-Wire Interface |
| 中文描述： | BRUSH DC MOTOR CONTROLLER, PDSO16 |
| 封裝： | 0.150 INCH, PLASTIC, SSOP-16 |
| 文件頁(yè)數(shù)： | 5/12頁(yè) |
| 文件大小： | 203K |
| 代理商： | LTC1840IGN |
LTC1840
5
1840f
fault conditions on the LTC1840. An external 10k pull-up
is recommended.
GPIO1, GPIO2, GPIO3, GPIO4 (Pins 6, 7, 9, 10):
General
Purpose Inputs/Outputs. These pins can be used as digital
inputs with CMOS logic thresholds or digital outputs/LED
drivers with open drain pull-downs that can be pro-
grammed to blink. GPIO pins can be programmed to
produce faults due to changes in their logic states, and
these faults can only be cleared by software or powering
the LTC1840 down. All GPIOs default to nonfaulting logic
inputs upon power-up and their functionality is changed
through the serial interface.
GND (Pin 8):
Ground. Connect to analog ground plane.
TACHA (Pin 11):
Tachometer Input A. This pin is a digital
input that is designed to interface to the tachometer output
from a 3-wire fan. Internal logic counts between rising
TACHA edges at serially programmable frequencies of
25kHz, 12.5kHz, 6.25kHz or 3.125kHz and the most re-
cently completed count is stored in a register accessible
through the serial interface. The maximum count is 255
and the LTC1840 is programmable to produce faults when
a count exceeds this number. This pin has CMOS thresh-
olds and the default conditions are to count at 3.125kHz
and to not produce faults.
TACHB (Pin 12):
Tachometer Input B. See TACHA
PIU
SCL (Pin 1):
Serial Clock Input. The 2-wire bus master
device clocks this pin at a frequency between 0kHz and
100kHz to enable serial bus communications. Data at the
SDA pin is shifted in or out on rising SCL edges. SCL has
a logic threshold of 1V and an external pull-up resistor or
current source is normally required.
SDA (Pin 2):
Serial Data Input. This is a bidirectional data
pin which normally has an external pull-up resistor or
current source and can be pulled down by the open drain
device on the LTC1840 or by external devices. The master
controls SDA during addressing, the writing of data, and
read acknowledgment, while the LTC1840 controls SDA
when data is being read back and during write acknowl-
edgment. SDA data is shifted in or out on rising SCL edges.
SDA has a logic threshold of 1V.
A1 (Pin 3):
Three State Address Programming Input. This
pin can cause three different logic states internally, de-
pending upon whether it is pulled to supply, pulled to
ground, or not connected (NC). Combined with the A0 pin,
this provides for nine different possible two-wire bus
addresses for the LTC1840 (see Table 1).
A0 (Pin 4):
Three State Address Programming Input. See
A1.
FAULT (Pin 5):
Fault Indicator Pull-Down Output. This pin
has an open drain pull-down that is used to signal various
TYPICAL PERFOR U
CODE
0
B
0.4
0.3
0.2
0.1
0
–0.1
–0.2
255
1840 G10
T
A
= 25
°
C
TEMPERATURE (
°
C)
–50
–25
25
75
B
50
1.011
1.010
1.009
1.008
1.007
1.006
1.005
1.004
1.003
1.002
1840 G11
0
100
BLAST Falling Threshold
at V
CC
= 3V
DAC INL at V
CC
= 3V
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| LTC1840IGN#PBF | 功能描述:IC DUAL FAN CONTROLLER 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器，驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:直流電機(jī)驅(qū)動(dòng)器，步進(jìn)電機(jī)驅(qū)動(dòng)器 評(píng)估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負(fù)載:10 V ~ 40 V 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-BFSOP（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOP 包裝:Digi-Reel® 其它名稱:MTS62C19A-HS105DKR |
| LTC1840IGN#TR | 功能描述:IC DUAL FAN CONTROLLER 16-SSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器，驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:直流電機(jī)驅(qū)動(dòng)器，步進(jìn)電機(jī)驅(qū)動(dòng)器 評(píng)估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負(fù)載:10 V ~ 40 V 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-BFSOP（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOP 包裝:Digi-Reel® 其它名稱:MTS62C19A-HS105DKR |
| LTC1840IGN#TRPBF | 功能描述:IC DUAL FAN CONTROLLER 16-SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器，驅(qū)動(dòng)器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:直流電機(jī)驅(qū)動(dòng)器，步進(jìn)電機(jī)驅(qū)動(dòng)器 評(píng)估套件:- 輸出數(shù):1 或 2 電流 - 輸出:750mA 電壓 - 負(fù)載:10 V ~ 40 V 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:24-BFSOP（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:24-SOP 包裝:Digi-Reel® 其它名稱:MTS62C19A-HS105DKR |
| LTC1841CS8 | 功能描述:IC COMP ULTLOPWR W/REF DUAL8SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 標(biāo)準(zhǔn)包裝:25 系列:- 類型:帶電壓基準(zhǔn) 元件數(shù):4 輸出類型:CMOS，開路漏極，TTL 電壓 - 電源，單路/雙路(±):2 V ~ 11 V，±1 V ~ 5.5 V 電壓 - 輸入偏移（最小值）:10mV @ 5V 電流 - 輸入偏壓（最小值）:- 電流 - 輸出（標(biāo)準(zhǔn)）:0.015mA @ 5V 電流 - 靜態(tài)（最大值）:8.5µA CMRR, PSRR（標(biāo)準(zhǔn)）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:12µs 磁滯:50mV 工作溫度:0°C ~ 70°C 封裝/外殼:16-DIP（0.300"，7.62mm） 安裝類型:通孔 包裝:管件 |
| LTC1841CS8#PBF | 功能描述:IC COMP ULTLOPWR W/REF DUAL8SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 比較器 系列:- 標(biāo)準(zhǔn)包裝:25 系列:- 類型:帶電壓基準(zhǔn) 元件數(shù):4 輸出類型:CMOS，開路漏極，TTL 電壓 - 電源，單路/雙路(±):2 V ~ 11 V，±1 V ~ 5.5 V 電壓 - 輸入偏移（最小值）:10mV @ 5V 電流 - 輸入偏壓（最小值）:- 電流 - 輸出（標(biāo)準(zhǔn)）:0.015mA @ 5V 電流 - 靜態(tài)（最大值）:8.5µA CMRR, PSRR（標(biāo)準(zhǔn)）:80dB CMRR，80dB PSRR 傳輸延遲（最大）:12µs 磁滯:50mV 工作溫度:0°C ~ 70°C 封裝/外殼:16-DIP（0.300"，7.62mm） 安裝類型:通孔 包裝:管件 |
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