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參數(shù)資料
| 型號： | LT3570EFE#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.1 A SWITCHING REGULATOR, 2750 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | 4.40 MM, LEAD FREE, PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 15/20頁 |
| 文件大?。?/td> | 283K |
| 代理商： | LT3570EFE#PBF |
LT3570
4
3570fb
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SW2
Error Amplier 2 Transconductance
195
μMho
Error Amplier 2 Voltage Gain
100
V/V
VC2 Pin Switching Threshold
700
mV
VC2 to SW2 Current Gain
5.4
A/V
SW2 Current Limit
(Note 7)
1.5
2.4
3.1
A
SW2 VCESAT
ISW2 = 1A (Note 7)
240
mV
SW2 Leakage Current
SW2 = 0V, VIN2 = 40V, VSHDN2 = 0V
0.2
5
μA
BOOST Pin Current
ISW2 = 0.5A
ISW2 = 1.5A
15
30
mA
LDO
LDO Maximum Output Current
VFB3 = 600mV
10
20
mA
ELECTRICAL CHARACTERISTICS The l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. VIN1,2,3 = 12V, VSHDN1,2,3 = 12V unless otherwise noted.
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 LT3570E is guaranteed to meet performance specications
from 0°C to 125°C junction temperature. Specications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3570I is guaranteed over the full –40°C to 125°C operating junction
temperature range.
Note 3: VIN2 supplies power for the part. VIN1 supplies power only to the
boost converter. VIN3 supplies power only to the LDO Controller.
Note 4: Shutdown current is for each individual input current.
Note 5: Current ows into the pin.
Note 6: Current ows out of the pin.
Note 7: Switch current limit and switch VCESAT guaranteed by design
and/or correlation to static test.
Note 8: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed the maximum operating junction temperature
range when overtemperature protection is active. Continuous operation
above the specied maximum operating junction temperature may impair
device reliability.
TYPICAL PERFORMANCE CHARACTERISTICS
Feedback Voltage vs Temperature
Frequency vs Temperature
Soft-Start Current vs Temperature
TEMPERATURE (°C)
–50
0.770
VOLTAGE
(V)
0.775
0.780
0.785
0.790
050
100
150
3570 G01
0.795
0.800
–25
25
75
125
TEMPERATURE (°C)
–50
FREQUENCY
(kHz)
1500
2000
2500
25
75
150
3570 G02
1000
500
0
–25
0
50
100 125
RT = 7.87k
RT = 20k
RT = 44.2k
TEMPERATURE (°C)
–50
CURRENT
(μA)
4.4
4.6
4.8
25
50
75
100 125
3570 G03
4.2
4.0
–25
0
150
3.8
3.6
5.0
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LT3570EFE-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1.5A Buck Converter, 1.5A Boost Converter and LDO Controller |
| LT3570EUF#PBF | 功能描述:IC REG TRPL BCK/BST/LINEAR 24QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標準包裝:2,500 系列:- 拓撲:降壓（降壓）同步（3），線性（LDO）（2） 功能:任何功能 輸出數(shù):5 頻率 - 開關:300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅動器:無 帶監(jiān)控器:無 帶序列發(fā)生器:是 電源電壓:5.6 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:* 供應商設備封裝:* 包裝:* |
| LT3570EUF#TRPBF | 功能描述:IC REG TRPL BCK/BST/LINEAR 24QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 + 切換式 系列:- 標準包裝:2,500 系列:- 拓撲:降壓（降壓）同步（3），線性（LDO）（2） 功能:任何功能 輸出數(shù):5 頻率 - 開關:300kHz 電壓/電流 - 輸出 1:控制器 電壓/電流 - 輸出 2:控制器 電壓/電流 - 輸出 3:控制器 帶 LED 驅動器:無 帶監(jiān)控器:無 帶序列發(fā)生器:是 電源電壓:5.6 V ~ 24 V 工作溫度:-40°C ~ 85°C 安裝類型:* 封裝/外殼:* 供應商設備封裝:* 包裝:* |
| LT3570EUF-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1.5A Buck Converter, 1.5A Boost Converter and LDO Controller |
| LT3570EUF-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1.5A Buck Converter, 1.5A Boost Converter and LDO Controller |
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