参数资料
型号: LTC1700EMS#TR
厂商: Linear Technology
文件页数: 3/16页
文件大小: 0K
描述: IC REG CTRLR BST PWM CM 10-MSOP
标准包装: 2,500
PWM 型: 电流模式
输出数: 1
频率 - 最大: 680kHz
占空比: 92%
电源电压: 0.9 V ~ 6 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 10-TFSOP,10-MSOP(0.118",3.00mm 宽)
包装: 带卷 (TR)
其它名称: LTC1700EMSTR
LTC1700
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. V OUT = 3V unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
TG Transition Time
TG t r
TG t f
TG Gate Drive Rise Time
TG Gate Drive Fall Time
C LOAD = 3000pF, 10% to 90%
C LOAD = 3000pF, 90% to 10%
60
60
100
100
ns
ns
BG Transition Time
BG t r
BG t f
BG Gate Drive Rise Time
BG Gate Drive Fall Time
C LOAD = 3000pF, 10% to 90%
C LOAD = 3000pF, 90% to 10%
80
50
100
70
ns
ns
Dead Time
t dll
t dhh
BG and TG Gates Go Low
BG and TG Gates Go High
C LOAD = 3000pF on BG and TG
C LOAD = 3000pF on TG and BG
88
66
110
90
ns
ns
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC1700E is 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: T J is calculated from the ambient temperature T A and power
dissipation P D according to the following formula:
T J = T A + (P D ? 150 ° C/W)
Note 4 : At an input supply less than 2.3V, only the start-up circuitry of the
LTC1700 is active. This test ensures the start-up circuitry is working.
Note 5: An input supply at or above this minimum operating voltage
activates the main control loop. Start-up circuitry of the LTC1700 is
shut off.
Note 6: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
Note 7: The LTC1700 is tested in a feedback loop that servos V FB to the
feedback point for the error amplifier (V ITH = 0.6V)
TYPICAL PERFOR M A N CE CHARACTERISTICS
1.210
1.208
1.206
1.204
1.202
1.200
1.198
1.196
1.194
1.192
Reference Voltage vs
Temperature
20
18
16
14
12
10
8
6
4
2
Shutdown Current vs Supply
Voltage
250
200
150
100
50
Quiescent Current vs Supply
Voltage
1.190
– 55 –35 –15
5
25
45
65
85 105 125
0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
TEMPERATURE ( ° C)
1700 G01
SUPPLY VOLTAGE (V)
1700 G02
SUPPLY VOLTAGE (V)
1700 G03
1700fa
3
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