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| 型号： | LT3570EUF#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 3.1 A SWITCHING REGULATOR, 2750 kHz SWITCHING FREQ-MAX, PQCC24 |
| 封装： | 4 X 4 MM, LEAD FREE, PLASTIC, MO-220WGGD, QFN-24 |
| 文件页数： | 15/20页 |
| 文件大小： | 283K |
| 代理商： | LT3570EUF#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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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3570EUF-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.5A Buck Converter, 1.5A Boost Converter and LDO Controller |
| LT3570FE | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.5A Buck Converter, 1.5A Boost Converter and LDO Controller |
| LT3570IFE#PBF | 功能描述:IC REG BUCK/BST/LINEAR 20TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| LT3570IFE#TRPBF | 功能描述:IC REG BUCK/BST/LINEAR 20TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| LT3570IFE-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.5A Buck Converter, 1.5A Boost Converter and LDO Controller |
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