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參數(shù)資料
| 型號(hào)： | LTC3521EFE#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, 1350 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | 4.40 MM, LEAD FREE, PLASTIC, TSSOP-20 |
| 文件頁(yè)數(shù)： | 17/22頁(yè) |
| 文件大小： | 1476K |
| 代理商： | LTC3521EFE#PBF |
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LTC3521
4
3521fa
TYPICAL PERFORMANCE CHARACTERISTICS
Buck-Boost Efficiency vs Load
Current, Li-Ion to 3.3V
Buck Efficiency vs Load Current,
Li-Ion to 2.5V
Buck Efficiency vs Load Current,
Li-Ion to 1.8V
Buck Burst Mode Current
Threshold vs VIN
0.1
1
10
100
1000
LOAD CURRENT (mA)
EFFICIENCY
(%)
POWER
LOSS
(mW)
3521 G01
0
20
40
60
80
100
120
140
0
20
30
40
50
60
70
80
90
100
10
Burst Mode
OPERATION
Burst Mode
POWER LOSS
VIN = 2.7V
VIN = 4.2V
PWM MODE
0.1
1
10
100
1000
LOAD CURRENT (mA)
0
EFFICIENCY
(%)
POWER
LOSS
(mW)
20
30
40
50
60
70
3521 G02
80
90
100
0
20
40
60
80
100
120
140
10
Burst Mode
OPERATION
Burst Mode
POWER LOSS
VIN = 3.6V
VIN = 4.2V
PWM MODE
0.1
1
10
100
1000
LOAD CURRENT (mA)
0
EFFICIENCY
(%)
POWER
LOSS
(mW)
20
30
40
50
60
70
3521 G03
80
90
100
0
20
40
60
80
100
120
140
10
Burst Mode
OPERATION
Burst Mode
POWER LOSS
PWM MODE
VIN = 2.7V
VIN = 4.2V
TA = 25°C, unless otherwise noted.
VIN (V)
1.5
LOAD
CURRENT
(mA) 40
50
5
30
20
2.5
3.5
2
3
4
4.5
5.5
10
0
60
3521 G04
VOUT = 2.5V
VOUT = 1.8V
VOUT = 1.2V
ELECTRICAL CHARACTERISTICS
Note 3: Current measurements are performed when the LTC3521 is not
switching. The current limit values in operation will be somewhat higher
due to the propagation delay of the comparators.
Note 4: The LTC3521 is tested in a proprietary test mode that connects
each FB pin to the output of the respective error amplifier.
Note 5: 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 specified maximum operating junction
temperature may impair device reliability.
Note 6: Shutdown current is measured on the VIN pin and does not include
PMOS switch leakage.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3521EFE-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Wide VIN, 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters |
| LTC3521EUF#PBF | 功能描述:IC REG BUCK BOOST SYNC ADJ 24QFN 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(pán) 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:10-MSOP 裸露焊盤(pán) |
| LTC3521EUF#TRPBF | 功能描述:IC REG BUCK BOOST SYNC ADJ 24QFN 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(pán) 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:10-MSOP 裸露焊盤(pán) |
| LTC3521EUF-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Wide VIN, 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters |
| LTC3521EUF-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Wide VIN, 1A Buck-Boost DC/DC and Dual 600mA Buck DC/DC Converters |
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