参数资料
型号: LT3471EDD#TRPBF
厂商: Linear Technology
文件页数: 3/16页
文件大小: 0K
描述: IC REG MULTI CONFIG ADJ DL 10DFN
标准包装: 2,500
类型: 升压(升压),反相,回扫,Sepic
输出类型: 可调式
输出数: 2
输出电压: 1 V ~ 40 V
输入电压: 2.4 V ~ 16 V
PWM 型: 电流模式
频率 - 开关: 1.2MHz
电流 - 输出: 1.3A
同步整流器:
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)
LT3471
ELECTRICAL CHARACTERISTICS The ● denotes speci?cations which apply over the full operating
temperature range, otherwise speci?cations are T A = 25°C. V IN = V SHDN = 3V unless otherwise noted.
PARAMETER
SHDN Input Voltage Low
SHDN Pin Bias Current
CONDITIONS
Quiescent Current ≤ 1μA
V SHDN = 3V, V IN = 4V
V SHDN = 0V
MIN
TYP
22
0
MAX
0.3
36
0.1
UNITS
V
μA
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 LT3471E is guaranteed to meet performance speci?cations
from 0°C to 70°C. Speci?cations over the –40°C to 85°C operating
temperature range are assured by design, characterization and
correlation with statistical process controls.
Note 3: Current ?ows out of the pin.
Note 4: See Typical Performance Characteristics for guaranteed current
limit vs duty cycle.
Note 5: V CESAT is 100% tested at wafer level only.
TYPICAL PERFORMANCE CHARACTERISTICS
Quiescent Current
2.6
2.4
vs Temperature
1.010
1.005
V REF Voltage vs Temperature
V REF
V REF Voltage vs V REF Current
2.2
2.0
1.000
VOLTAGE
100mV/DIV
1.8
0.995
V REF CURRENT 200μA/DIV
3471 G03
1.6
–50
–25
0
25
50
75
100
125
0.990
–50
–25
0
25
50
75
100
125
TEMPERATURE (°C)
3471 G01
TEMPERATURE (°C)
3471 G02
SHDN /SS Current
vs SHDN /SS Voltage
Current Limit vs Duty Cycle
Switch Saturation Voltage
vs Switch Current
V IN = 3.3V
2.2
2.0
1.8
TYPICAL
T A = 25°C
800
700
SHDN /SS
CURRENT
20μV/DIV
V IN > V SHDN /SS
1.6
1.4
1.2
1.0
GUARANTEED
600
500
400
90°C
25°C
0.8
300
SHDN /SS VOLTAGE 1V/DIV
3471 G04
0.6
0.4
0.2
200
100
0
0
20
40
60
80
100
0
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
DUTY CYCLE (%)
3471 G05
SW CURRENT (A)
3471 G06
3471fb
3
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