參數(shù)資料
型號(hào)： LTC1871EMS-1#TR
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO10
封裝： PLASTIC, MSOP-10
文件頁(yè)數(shù)： 31/36頁(yè)
文件大?。?/td> 523K
代理商： LTC1871EMS-1#TR
LTC1871-1
4
18711fb
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC1871E-1 is guaranteed to meet performance specications
from 0°C to 85°C junction temperature. Specications over the – 40°C
to 85°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LTC1871I-1 is guaranteed over the full –40°C to 125°C operating junction
temperature range.
Note 3: TJ is calculated from the ambient temperature TA and power
dissipation PD according to the following formula:
TJ = TA + (PD 110°C/W)
Note 4: The dynamic input supply current is higher due to power MOSFET
gate charging (QG fOSC). See Applications Information.
Note 5: The LTC1871-1 is tested in a feedback loop which servos VFB to
the reference voltage with the ITH pin forced to the midpoint of its voltage
range (0.3V ≤ VITH ≤ 1.2V, midpoint = 0.75V).
Note 6: In a synchronized application, the internal slope compensation
gain is increased by 25%. Synchronizing to a signicantly higher ratio will
reduce the effective amount of slope compensation, which could result in
subharmonic oscillation for duty cycles greater than 50%.
Note 7: Rise and fall times are measured at 10% and 90% levels.
The
l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VIN = 5V, VRUN = 1.5V, RFREQ = 80k, VMODE/SYNC = 0V, unless otherwise specied.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Low Dropout Regulator
VINTVCC
INTVCC Regulator Output Voltage
VIN = 7.5V
5.0
5.2
5.4
V
VIN = 7.5V, I-Grade (Note 2)
●
5.0
5.2
5.4
V
ΔVINTVCC
ΔVIN1
INTVCC Regulator Line Regulation
7.5V ≤ VIN ≤ 15V
8
25
mV
ΔVINTVCC
ΔVIN2
INTVCC Regulator Line Regulation
15V ≤ VIN ≤ 30V
70
200
mV
VLDO(LOAD)
INTVCC Load Regulation
0 ≤ IINTVCC ≤ 20mA, VIN = 7.5V
– 2
–0.2
%
VDROPOUT
INTVCC Regulator Dropout Voltage
INTVCC Load = 20mA
280
mV
IINTVCC
Bootstrap Mode INTVCC Supply
RUN = 0V, SENSE = 5V
10
20
μA
I-Grade (Note 2)
●
30
μA
GATE Driver
tr
GATE Driver Output Rise Time
CL = 3300pF (Note 7)
17
100
ns
tf
GATE Driver Output Fall Time
CL = 3300pF (Note 7)
8
100
ns
TYPICAL PERFORMANCE CHARACTERISTICS
FB Voltage vs Temp
FB Voltage Line Regulation
FB Pin Current vs Temperature
TEMPERATURE (°C)
–50
FB
VOLTAGE
(V)
1.23
1.24
150
18711 G01
1.22
1.21
0
50
100
–25
25
75
125
1.25
VIN (V)
0
1.229
FB
VOLTAGE
(V)
1.230
1.231
510
15
20
18711 G02
25
30
35
TEMPERATURE (°C)
–50
0
FB
PIN
CURRENT
(nA)
10
20
30
40
60
–25
25
0
50
100
75
18711 G03
125 150
50
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC1871EMS7 制造商:Linear Technology 功能描述:
LTC1871EMS-7 功能描述:IC REG CTRLR BST FLYBK CM 10MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無(wú) 升壓:是 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤(pán) 包裝:帶卷 (TR)
LTC1871EMS-7#PBF 功能描述:IC REG CTRLR BST FLYBK CM 10MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 特色產(chǎn)品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 標(biāo)準(zhǔn)包裝:1 系列:PowerWise® PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1MHz 占空比:81% 電源電壓:4.5 V ~ 18 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-5°C ~ 125°C 封裝/外殼:32-WFQFN 裸露焊盤(pán) 包裝:Digi-Reel® 產(chǎn)品目錄頁(yè)面:1303 (CN2011-ZH PDF) 其它名稱:LM3754SQDKR
LTC1871EMS-7#TR 功能描述:IC REG CTRLR BST FLYBK CM 10MSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無(wú) 升壓:是 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤(pán) 包裝:帶卷 (TR)
LTC1871EMS-7#TRPBF 功能描述:IC REG CTRLR BST FLYBK CM 10MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- PWM 型:電流模式 輸出數(shù):1 頻率 - 最大:500kHz 占空比:96% 電源電壓:4 V ~ 36 V 降壓:無(wú) 升壓:是 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 125°C 封裝/外殼:24-WQFN 裸露焊盤(pán) 包裝:帶卷 (TR)
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