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參數(shù)資料
| 型號(hào)： | LTC1843IS8#TRPBF |
| 廠商： | Linear Technology |
| 文件頁(yè)數(shù)： | 10/12頁(yè) |
| 文件大小： | 0K |
| 描述： | IC COMP ULTLOPWR W/REF DL 8SOIC |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 帶電壓基準(zhǔn) |
| 元件數(shù)： | 2 |
| 輸出類型： | 開(kāi)路漏極 |
| 電壓 - 電源，單路/雙路(±)： | 2.5 V ~ 11 V，±1.25 V ~ 5.5 V |
| 電壓 - 輸入偏移（最小值）： | 10mV @ 5V |
| 電流 - 靜態(tài)（最大值）： | 5.7µA |
| CMRR, PSRR（標(biāo)準(zhǔn)）： | 80dB CMRR，80dB PSRR |
| 傳輸延遲（最大）： | 12µs |
| 磁滯： | 50mV |
| 工作溫度： | -40°C ~ 85°C |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 安裝類型： | 表面貼裝 |
| 包裝： | 帶卷 (TR) |
7
LTC1841/LTC1842/LTC1843
APPLICATIONS INFORMATION
WU
U
The LTC1841/LTC1842/LTC1843 are dual micropower
comparators with a built-in 1.182V reference (LTC1842/
LTC1843). Features include programmable hysteresis,
wide supply voltage range (2V to 11V) and the ability for
the reference to drive up to a 0.01
F capacitor without
oscillation. The comparators’ open-drain outputs can typi-
cally sink greater than 20mA and the supply current
glitches that normally occur when switching logic states
have been eliminated.
Power Supplies
The comparators operate from a single 2V to 11V (2.5V to
11V for LTC1842/LTC1843) or dual
±1V to ±5.5V supply
(
±1.25V to ±5.5V for LTC1842/LTC1843). If the reference
output is required to source more than 1mA or the supply
source impedance is high, V + should be bypassed with a
0.1
F capacitor.
Comparator Inputs
The comparators’ input can swing from the negative
supply V – to within 1.3V (max) of the positive supply V +.
The input can be forced 300mV below V – or above V +
without damage and the typical input leakage current is
only
±10pA.
Comparator Outputs
Each comparator output is an open-drain pull-down to V–
typically capable of sinking greater than 20mA. The low
output leakage current while in three-state mode allows a
high value pull-up resistor to be used. The open-drain
outputs can be wire OR-ed or used in level shifting
applications.
Voltage Reference
The internal bandgap reference has an output voltage of
1.182V referenced to V –. The reference accuracy is 1.5%
from – 40
°C to 85°C. It can typically source greater than
1mA and sink up to 10
A with a 5V supply. The reference
can drive a bypass capacitor of up to 0.01
F without
oscillation. By inserting a series resistor, capacitance
values up to 100
F can be used (Figure 1).
Figure 1. Damping the Reference Output
Figure 3 shows the bypassed reference output with a
square wave applied to the V + pin. Resistors R2 and R3 set
a 10mV hysteresis voltage band while R1 damps the
reference response. Note that the comparator output
doesn’t trip.
CAPACITOR VALUE (
F)
0.001
0.1
RESISTOR
VALUE
(k
)
10
0.01
0.1
10
1
1841/43 F02
1
100
Figure 2. Damping Resistance vs Bypass Capacitor Value
LTC1843
V –
REF
R1
C1
REFERENCE
OUTPUT
1841/43 F01
Figure 2 shows the resistor value required for different
capacitor values to achieve critical damping. Bypassing
the reference can help prevent false tripping of the com-
parators by preventing glitches on V + or reference load
transients from disturbing the reference output voltage.
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| LTC1844ES5-1.5#PBF | 制造商:Linear Technology 功能描述:LDO Regulator Pos 1.5V 0.15A 5-Pin TSOT-23 制造商:Linear Technology 功能描述:LDO 0.35VDO 0.15A 1.5V 5TSOT23 制造商:Linear Technology 功能描述:LDO, 0.35VDO, 0.15A, 1.5V, 5TSOT23 制造商:Linear Technology 功能描述:DP-LINREG, CUT TAPE 1.5V, Micropower, Low Noise VLDO 制造商:Linear Technology 功能描述:LDO, FIXED, 1.5V, 150mA, TSOT-23-5, Input Voltage Min:1.6V, Input Voltage Max:6.5V, Output Current:150mA, Dropout Voltage Vdo:350mV, No. of Pins:5, Operating Temperature Min:-40C, Operating Temperature Max:125C , RoHS Compliant: Yes |
| LTC1844ES5-1.5#TR | 功能描述:IC REG LDO 1.5V .15A TSOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:3.3V 輸入電壓:2.5 V ~ 5.5 V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.1V @ 200mA 穩(wěn)壓器數(shù)量:2 電流 - 輸出:300mA 電流 - 限制（最?。?350mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-UFQFN 供應(yīng)商設(shè)備封裝:8-MLPQ-UT（1.5x1.5） 包裝:剪切帶 (CT) 產(chǎn)品目錄頁(yè)面:1358 (CN2011-ZH PDF) 其它名稱:SC560HULCT |
| LTC1844ES5-1.5#TRM | 功能描述:IC REG LDO 1.5V .15A TSOT23-5 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:1 系列:anyCAP® 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:3.3V 輸入電壓:最高 6V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.23V @ 1.5A 穩(wěn)壓器數(shù)量:1 電流 - 輸出:1.5A 電流 - 限制（最?。?- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:TO-261-4，TO-261AA 供應(yīng)商設(shè)備封裝:SOT-223-3 包裝:Digi-Reel® 其它名稱:ADP3339AKCZ-3.3-RLDKR |
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