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参数资料
| 型号： | LT3480EDD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/24页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 2A 10DFN |
| 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： | 0.79 V ~ 20 V |
| 输入电压： | 3.6 V ~ 36 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 200kHz ~ 2.4MHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-DFN（3x3） |
LT3480
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature
range, otherwise specifications are at T A = 25°C. V IN = 10V, V RUN/SS = 10V, V BOOST = 15V, V BD = 3.3V u nles s otherwise noted. (Note 2)
PARAMETER
Minimum Input Voltage
CONDITIONS
l
MIN
TYP
3
MAX
3.6
UNITS
V
V IN Overvoltage Lockout
l
36
38
40
V
Quiescent Current from V IN
Quiescent Current from BD
Minimum Bias Voltage (BD Pin)
V RUN/SS = 0.2V
V BD = 3V, Not Switching
V BD = 0, Not Switching
V RUN/SS = 0.2V
V BD = 3V, Not Switching
V BD = 0, Not Switching
l
l
0.01
30
105
0.01
80
1
2.7
0.5
100
160
0.5
120
5
3
μA
μA
μA
μA
μA
μA
V
Feedback Voltage
l
780
775
790
790
800
805
mV
mV
FB Pin Bias Current (Note 3)
FB Voltage Line Regulation
V FB = 0.8V, V C = 0.4V
4V < V IN < 36V
l
7
0.002
30
0.01
nA
%/V
Error Amp g m
Error Amp Gain
V C Source Current
V C Sink Current
V C Pin to Switch Current Gain
V C Clamp Voltage
400
1000
45
45
3.5
2
μMho
μA
μA
A/V
V
Switching Frequency
Minimum Switch Off-Time
Switch Current Limit
Switch V CESAT
R T = 8.66k
R T = 29.4k
R T = 187k
Duty Cycle = 5%
I SW = 2A
l
2.1
0.9
160
3
2.4
1
200
60
3.5
500
2.7
1.15
240
150
4
MHz
MHz
kHz
nS
A
mV
Boost Schottky Reverse Leakage
Minimum Boost Voltage (Note 4)
BOOST Pin Current
RUN/SS Pin Current
V BD = 0V
I SW = 1A
V RUN/SS = 2.5V
l
0.02
1.5
22
5
2
2.1
35
10
μA
V
mA
μA
RUN/SS Input Voltage High
RUN/SS Input Voltage Low
0.2
2.5
V
V
PG Threshold Offset from Feedback Voltage
PG Hysteresis
V FB Rising
100
12
mV
mV
PG Leakage
V PG = 5V
0.1
1
μA
PG Sink Current
V PG = 0.4V
l
100
600
μA
SYNC Low Threshold
SYNC High Threshold
0.5
0.7
V
V
SYNC Pin Bias Current
V SYNC = 0V
0.1
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 LT3480E is guaranteed to meet performance specifications
from 0°C to 125°C. Specifications over the –40°C to 125°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LT3480I specifications are
3480fe
For more information www.linear.com/LT3480
3
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| LT3480EMSE#TRPBF | 功能描述:IC REG BUCK ADJ 2A 10MSOP 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:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 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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