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| 型号： | LT3971IMSE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/28页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 1.2A 10MSOP |
| 标准包装： | 2,500 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.19 V ~ 30 V |
| 输入电压： | 4.3 V ~ 38 V |
| PWM 型： | 电流模式，Burst Mode? |
| 频率 - 开关： | 200kHz ~ 2MHz |
| 电流 - 输出： | 1.2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-MSOP 裸露焊盘 |
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LT3971/LT3971-3.3/LT3971-5
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications a r e at T A = 25°C. V IN = 12V, V EN = 12V, V BD = 3.3V unless otherwise n oted. (Not e 2)
PG Leakage
V PG = 3V
0.02
1
μA
PG Sink Current
SYNC Threshold
V PG = 0.4V
l
300
0.6
570
0.8
1.0
μA
V
SYNC Pin Current
0.1
nA
SS Source Current
V SS = 1V
0.6
1
1.6
μA
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 LT3971E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization, and correlation with statistical process controls. The
LT3971I is guaranteed over the full –40°C to 125°C operating junction
temperature range. High junction temperatures degrade operating
lifetimes. Operating lifetime is derated at junction temperatures greater
than 125°C.
Note 3: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the switch.
Note 4: This is the minimum input voltage for operation with accurate FB
regulation. Minimum input voltage for output regulation depends on the
application circuit.
TYPICAL PERFORMANCE CHARACTERISTICS
T A = 25°C, unless otherwise noted.
80
V IN = 12V
100
90
80
Efficiency, V OUT = 5V
V IN = 12V
100
90
80
Efficiency, V OUT = 3.3V
V IN = 12V
Efficiency, V OUT = 5V
100
V OUT = 5V
90 R1 = 1M
R2 = 309k
70
70
60
V IN = 24V
V IN = 36V
70
60
V IN = 36V
V IN = 24V
60
50
V IN = 24V
V IN = 36V
50
50
40
40
30
20
V OUT = 5V
R1 = 1M
R2 = 309k
0 0.2
0.4 0.6 0.8
1
1.2
40
30
20
0
0.2
0.4 0.6 0.8
1
1.2
30
20
10
0
0.01
0.1
1 10
100
1000
LOAD CURRENT (A)
3971 G01
LOAD CURRENT (A)
3971 G02
LOAD CURRENT (mA)
3971 G03
90
80
70
60
50
40
Efficiency, V OUT = 3.3V
V IN = 12V
V IN = 24V
V IN = 36V
100
10
No Load Supply Current
DIODES, INC.
DFLS2100
4.0
3.5
3.0
2.5
No Load Supply Current
LT3971
V OUT = 3.3V
LT3971-5
30
20
10
2.0
1.5
LT3971-3.3
0
0.01
0.1
1 10
100
1000
1
–55
–25
5 35 65 95
125
155
1.0
5
10
15
20
25
30
35
LOAD CURRENT (mA)
3971 G04
TEMPERATURE (°C)
3971 G05
INPUT VOLTAGE (V)
3971 G06
3971fd
4
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| LT3972EDD#PBF | 功能描述:IC REG BUCK ADJ 3.5A 10DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
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