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参数资料
| 型号： | LTC1771EMS8 |
| 厂商： | Linear Technology |
| 文件页数： | 3/16页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 8-MSOP |
| 标准包装： | 50 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 占空比： | 100% |
| 电源电压： | 2.8 V ~ 18 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 包装： | 管件 |
| 其它名称： | Q1164777 |
LTC1771
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25 ° C.
V IN = 10V, V RUN = open unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V RUN/SS
I RUN
RUN/SS Pin Threshold
Source Current
V RUN/SS Rising
V RUN = 0V, V IN = 2.8V to 18V
q
0.5
0.3
1.0
1
2
3
V
μ A
PGATE t r , t f
PGATE Transition Time (Note 7)
Rise Time
Fall Time
C LOAD = 2000pF
C LOAD = 2000pF
70
70
140
140
ns
ns
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: T J is calculated from the ambient temperature T A and power
dissipation P D according to the following formulas:
LTC1771S8: T J = T A + (P D )(110 ° C/W)
LTC1771MS8: T J = T A + (P D )(150 ° C/W)
Note 3: The LTC1771E is guaranteed to meet performance specifications
from 0 ° C to 70 ° C. Specifications over the – 40 ° C to 85 ° C operating
Note 4: Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency. See Applications Information.
Note 5: The LTC1771 is tested in a feedback loop that servos V FB to the
balance point for the error amplifier (V ITH = 1.23V).
Note 6: No-load supply current consists of sleep mode current (9 μ A
typical) plus a small switching component necessary to overcome
Schottky diode leakage and feedback resistor current.
Note 7: t r and t f are measured at 10% to 90% levels.
temperature range are assured by design, characterization and correlation
with statistical process controls. The LTC1771I is guaranteed and tested
over the – 40 ° C to 85 ° C operating temperature range.
TYPICAL PERFOR A CE CHARACTERISTICS
Efficiency vs Input Voltage
Efficiency vs Load Current
Line Regulation
100
FIGURE 1 CIRCUIT
100
90
Burst Mode OPERATION
ENABLED
0.4
0.3
FIGURE 1 CIRCUIT
80
90
I LOAD = 1A
70
0.2
80
I LOAD = 50mA
I LOAD = 1mA
60
50
40
30
Burst Mode OPERATION
DISABLED
0.1
0
– 0.1
I LOAD = 100mA
I LOAD = 1A
70
20
– 0.2
10
V IN = 10V
– 0.3
60
2
4
6
8 10
12 14 16
18
20
0
0.1
1
10
FIGURE 1 CIRCUIT
100 1000
– 0.4
0
5
10
15
20
INPUT VOLTAGE (V)
1771 G01
LOAD CURRENT (mA)
1771 G02
INPUT VOLTAGE (V)
1771 G03
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1771EMS8#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 8-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 特色产品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 标准包装:1 系列:PowerWise® PWM 型:电压模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.5 V ~ 18 V 降压:是 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-5°C ~ 125°C 封装/外壳:32-WFQFN 裸露焊盘 包装:Digi-Reel® 产品目录页面:1303 (CN2011-ZH PDF) 其它名称:LM3754SQDKR |
| LTC1771EMS8#PBF | 制造商:Linear Technology 功能描述:IC STEP-DOWN DC/DC CONTROLLER MSOP-8 制造商:Linear Technology 功能描述:IC, STEP-DOWN DC/DC CONTROLLER, MSOP-8 |
| LTC1771EMS8#TR | 功能描述:IC REG CTRLR BUCK PWM CM 8-MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC1771EMS8#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 8-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:500kHz 占空比:96% 电源电压:4 V ~ 36 V 降压:无 升压:是 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:-40°C ~ 125°C 封装/外壳:24-WQFN 裸露焊盘 包装:带卷 (TR) |
| LTC1771EMS8PBF | 制造商:Linear Technology 功能描述:PWM Controller Current 1.23-18V 5A MSOP8 |
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