参数资料
型号: LT3800EFE#TRPBF
厂商: Linear Technology
文件页数: 4/24页
文件大小: 0K
描述: IC REG CTRLR INV PWM CM 16-TSSOP
标准包装: 2,500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 220kHz
占空比: 95%
电源电压: 4 V ~ 60 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 125°C
封装/外壳: 16-TSSOP(0.173",4.40mm)裸露焊盘
包装: 带卷 (TR)

LT3800
ELECTRICAL CHARACTERISTICS
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: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the speci?ed maximum operating junction
temperature may impair device reliability.
Note 3: The LT3800E is guaranteed to meet performance speci?cations
from 0°C to 125°C junction temperature. Speci?cations over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3800I is guaranteed over the full –40°C to 125°C operating junction
temperature range.
Note 4: V IN voltages below the start-up threshold (7.5V) are only
supported when V CC is externally driven above 6.5V.
Note 5: Operating range dictated by MOSFET absolute maximum gate-
source voltage ratings.
Note 6: Supply current speci?cation does not include switch drive
currents. Actual supply currents will be higher.
Note 7: DC measurement of gate drive output “ON” voltage is typically
8.6V. Internal dynamic bootstrap operation yields typical gate “ON”
voltages of 9.8V during standard switching operation. Standard operation
gate “ON” voltage is not tested but guaranteed by design.
TYPICAL PERFORMANCE CHARACTERISTICS
Shutdown Threshold (Rising)
Shutdown Threshold (Falling)
1.37
1.36
1.35
1.34
vs Temperature
1.240
1.235
1.230
1.225
vs Temperature
8.1
8.0
7.9
V CC vs Temperature
I CC = 0mA
I CC = 20mA
1.33
–50
–25
0
25
50
75
100
125
1.220
–50
–25
0
25
50
75
100
125
7.8
–50
–25
0
25
50
75
100
125
TEMPERATURE (°C)
V CC vs I CC(LOAD)
3800 G01
TEMPERATURE (°C)
V CC vs V IN
3800 G02
TEMPERATURE (°C)
3800 G03
I CC Current Limit vs Temperature
8.05
T A = 25°C
8
I CC = 20mA
T A = 25°C
200
7
175
8.00
150
6
7.95
5
125
100
7.90
4
75
7.85
0
5
10
15
20
25
30
35
40
3
4
5
6
7
8
9
10
11
12
50
–50
–25
0
25
50
75
100
125
I CC(LOAD) (mA)
3800 G04
V IN (V)
3800 G05
TEMPERATURE (°C)
3800 G06
3800fc
4
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