参数资料
型号: LT3473AEDE#TRPBF
厂商: Linear Technology
文件页数: 3/12页
文件大小: 0K
描述: IC REG BOOST ADJ 1A 12DFN
标准包装: 2,500
类型: 升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 可调至 34V
输入电压: 2.2 V ~ 16 V
PWM 型: 电流模式,混合
频率 - 开关: 1.2MHz
电流 - 输出: 1A
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: 12-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 12-DFN(4x3)
LT3473/LT3473A
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are T A = 25 ° C.
V IN = 3V, SHDN = 3V, CTRL = 2V, unless otherwise specified.
PARAMETER
Switching Frequency
Maximum Duty Cycle
CONDITIONS
MIN
0.9
88
TYP
1.2
92
MAX
1.4
UNITS
MHz
%
Switch Current Limit
Switch V CESAT
I SW = 100mA
1.2
45
A
mV
Switch Leakage Current
V SW = 5V
0.1
5
μ A
Schottky Forward Drop
Schottky Leakage Current
Disconnect PNP Voltage Drop
Disconnect PNP Quiescent Current
I D = 100mA
CAP = 36V, SW = 0V
I OUT = 100 μ A, CAP = 20V
I OUT = 50mA, CAP = 20V
CAP = 20V
0.45
80
250
1.2
4
V
μ A
mV
mV
μ A
Disconnect PNP Leakage Current
SHDN = OUT = 0V, CAP = 20V
0.01
0.1
μ A
LTC3473A Only
NPN1 Voltage Drop
NPN1 Beta
NPN2 Voltage Drop
NPN2 Beta
INE1 = 1mA
INE1 = 1mA
INE2 = 1mA
INE2 = 1mA
60
60
0.8
0.8
V
V
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LT3473EDD and LT3473AEDE are guaranteed to meet
performance specifications from 0 ° C to 70 ° C. Specifications over the
–40 ° C to 85 ° C operating temperature range are assured by design,
characterization and correlation with statistical process controls.
Note 3: Failure to correctly solder the Exposed Pad of the package to the
PC board will result in a thermal resistance much higher than 40 ° C.
TYPICAL PERFOR A CE CHARACTERISTICS
Load Regulation (Feedback Taken
T A = 25 ° C unless otherwise noted.
from CAP)
Feedback Voltage
PGOOD Threshold Voltage
20.20
20.00
V IN = 3.6V
1.4
1.2
1.4
1.2
CAP
19.80
19.60
19.40
19.20
OUT
1.0
0.8
0.6
0.4
0.2
1.0
0.8
0.6
0.4
0.2
19.00
0
20
40 60 80
100
0
0
0.2 0.4 0.6 0.8
1
1.2 1.4 1.6 1.8
2
0
0
0.5
1
1.5
2
LOAD CURRENT (mA)
3473 G01
CTRL VOLTAGE (V)
3473 G02
CTRL VOLTAGE (V)
3473 G03
3473f
3
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