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參數(shù)資料
| 型號(hào)： | LTC3544EUD |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.8 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PQCC16 |
| 封裝： | 3 X 3 MM, LEAD FREE, PLASTIC, MO220WEED-2, QFN-16 |
| 文件頁(yè)數(shù)： | 11/16頁(yè) |
| 文件大?。?/td> | 295K |
| 代理商： | LTC3544EUD |
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LTC3544
4
3544fa
2
μs/DIV
VOUT300
50mV/DIV
AC
COUPLED
IL
100mA/DIV
SW300
5V/DIV
3544 G04
VIN = 3.6V
VOUT = 1.8V
TA = 25°C
ILOAD = 20mA
Burst Mode Operation
300mA Channel
Burst Mode Operation
200mA, A-B Channels
Burst Mode Operation
100mA Channel
VREF vs Temperature at 2.25V,
3.6V, 5.5V
Switching Frequency vs Supply
Voltage and Temperature
Efciency vs Load Current 300mA
Channel. All Other Channels at
50% Peak Current
TEMPERATURE (
°C)
–50
0.785
V
REF
(V)
0.790
0.795
0.800
0805
0.810
0.815
0
50
100
3544 G01
VIN = 2.25V
VIN = 3.6V
VIN = 5.5V
CHANNEL 200A
ILOAD = 100mA
ALL CHANNELS OPERATING
SUPPLY VOLTAGE (V)
2
1.5
SWITCHING
FREQUENCY
(MHz)
2.0
2.5
3.0
34
3544 G02
56
fOSC –40°C
fOSC 0°C
fOSC 25°C
fOSC 80°C
ILOAD CHANNEL 100 = 50mA
ALL CHANNELS OPERATING
LOAD CURRENT 300mA CHANNEL (A)
30
EFFICIENCY
(%)
90
100
20
10
80
50
70
60
40
0.0001
0.01
0.1
1
3544B G03
0
0.001
VIN = 3.6V
TA = 25°C
VOUT100 = 1.2V
VOUT200A = 0.8V
VOUT200B = 1.5V
VOUT300 = 1.8V
ALL OTHER CHANNELS LOADED 50%
2
μs/DIV
VOUT200B
50mV/DIV
AC
COUPLED
IL
50mA/DIV
SW2B
5V/DIV
3544 G05
VIN = 3.6V
VOUT = 1.5V
TA = 25°C
ILOAD = 15mA
2
μs/DIV
VOUT100
50mV/DIV
AC
COUPLED
IL
50mA/DIV
SW100
5V/DIV
3544 G06
VIN = 3.6V
VOUT = 1.2V
TA = 25°C
ILOAD = 12mA
TYPICAL PERFORMANCE CHARACTERISTICS
Note 3: TJ is calculated from the ambient temperature TA and power
dissipation PD according to the following formula:
TJ = TA + (PD)(68°C/W).
Note 4: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature is active. Continuous
operation above the specied maximum operating junction temperature
may impair device reliability.
Note 5: The LTC3544 is tested in a proprietary test mode that connects VFB
to the output of the error amplier.
Note 6: Load regulation is inferred by measuring the regulation loop gain.
Note 7: The QFN switch on-resistance is guaranteed by correlation to wafer
level measurements.
Note 8: Guaranteed by long-term current density limitations.
ELECTRICAL CHARACTERISTICS
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| LTC3544EUD#PBF | 功能描述:IC REG BUCK SYNC ADJ QUAD 16QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開(kāi)關(guān):2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁(yè)面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LTC3544EUD#TRPBF | 功能描述:IC REG BUCK SYNC ADJ QUAD 16QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開(kāi)關(guān):- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:10-MSOP 裸露焊盤 |
| LTC3544EUDPBF | 制造商:Linear Technology 功能描述:2.25MHz Sync Step-Down Converter LTC3544 |
| LTC3544EUD-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Quad Synchronous Step-Down Regulator: 2.25MHz, 300mA, 200mA, 200mA, 100mA |
| LTC3544EUD-TR | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Quad Synchronous Step-Down Regulator: 2.25MHz, 300mA, 200mA, 200mA, 100mA |
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