參數(shù)資料
型號(hào)： LTC3547BEDDB
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 0.7 A DUAL SWITCHING CONTROLLER, 2700 kHz SWITCHING FREQ-MAX, PDSO8
封裝： 3 X 2 MM, 0.75 MM HEIGHT, PLASTIC, M0-229WECD-1, DFN-8
文件頁(yè)數(shù)： 10/16頁(yè)
文件大?。?/td> 270K
代理商： LTC3547BEDDB
LTC3547B
3
3547bfa
VIN (V)
2.5
100
90
80
70
60
50
40
10
20
30
45
3547b G02
3
3.5
4.5
5.5
EFFICIENCY
(%)
VOUT = 1.8V
IOUT = 0.1mA
IOUT = 1mA
IOUT = 10mA
IOUT = 100mA
IOUT = 300mA
10
s/DIV
VOUT
50mV/DIV
IL
50mA/DIV
SW,
AC-COUPLED
5V/DIV
3547b G01
VIN = 3.6V
VOUT = 1.8V
ILOAD = 1mA
TEMPERATURE (C)
–50
400
350
300
250
200
150
100
25
75
3547b G03
–25
0
50
100
SUPPLY
CURRENT
(
A)
ILOAD = 0A
VIN = 5.5V
VIN = 2.7V
TEMPERATURE (
°C)
–50
FREQUENCY
(MHz)
2.5
25
3547b G04
2.2
2.0
–25
0
50
1.9
1.8
2.6
2.4
2.3
2.1
75
100
125
VIN = 4.2V
VIN = 3.6V
VIN = 2.7V
TEMPERATURE (
°C)
–50
LEAKAGE
CURRENT
(nA)
25
3547b G05
40
20
–25
0
50
10
0
50
30
75
100
125
SYNCHRONOUS
SWITCH
MAIN SWITCH
VIN (V)
2.5
LEAKAGE
CURRENT
(pA)
4
3547b G06
400
200
3
3.5
4.5
100
0
500
300
5
5.5
6
SYNCHRONOUS
SWITCH
MAIN SWITCH
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ISW(LKG)
Switch Leakage Current
VIN = 5V, VRUN = 0V
0.01
1
A
tSOFTSTART
Soft-Start Time
VFB From 10% to 90% Full-Scale
0.450
0.650
0.850
ms
VRUN
RUN Threshold High
●
0.4
1
1.2
V
IRUN
RUN Leakage Current
●
0.01
1
A
The ● denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VCC = 3.6V, unless otherwise noted.
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 LTC3547BE is guaranteed to meet specied performance
from 0°C to 85°C. Specications over the –40°C and 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3: The DFN switch on-resistance is guaranteed by correlation to
wafer level measurements.
Note 4: Dynamic supply current is higher due to the internal gate charge
being delivered at the switching frequency.
Note 5: Guaranteed by long-term current density limitations.
Note 6: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specied maximum operating junction
temperature may impair device reliability.
Pulse Skip Mode Operation
Efciency vs Input Voltage
Supply Current vs Temperature
Oscillator Frequency
vs Temperature
Switch Leakage vs Temperature
Switch Leakage vs Input Voltage
TYPICAL PERFOR A CE CHARACTERISTICS
UW
TA = 25°C unless otherwise specied.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC3547BEDDB#PBF 制造商:Linear Technology 功能描述:BUCK 2.5 - 5.5V 0.3A 2.25MH
LTC3547BEDDB#TRMPBF 功能描述:IC REG BUCK SYNC ADJ .3A DL 8DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無(wú) 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC
LTC3547BEDDB#TRPBF 功能描述:IC REG BUCK SYNC ADJ .3A DL 8DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無(wú) 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC
LTC3547BEDDB-1#PBF 制造商:Linear Technology 功能描述:Conv DC-DC Dual Step Down 2.5V to 5.5V 8-Pin DFN EP
LTC3547BEDDB-1#TRMPBF 功能描述:IC REG BUCK SYNC ADJ .3A DL 8DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無(wú) 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC
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