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参数资料
| 型号： | LT3740EDHC#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 16-DFN |
| 标准包装： | 2,500 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 330kHz |
| 占空比： | 90% |
| 电源电压： | 2.2 V ~ 22 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： | 16-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
LT3740
ELECTRICAL CHARACTERISTICS The l denotes the speci?cations which apply over the full operating
temperature range, otherwise speci?cations are at T A = 25°C, V IN = 5V unless otherwise noted. (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SHDN Voltage to Enable Device
SHDN Voltage to Disable Device
TGATE On Voltage
TGATE Off Voltage
BGATE On Voltage
BGATE Off Voltage
TGATE Rise Time
TGATE Fall Time
BGATE Rise Time
BGATE Fall Time
C LOAD = 3300pF
C LOAD = 3300pF
C LOAD = 3300pF
C LOAD = 3300pF
●
●
1.1
5.5
0.2
5.5
0.2
30
30
50
50
0.5
V
V
V
V
V
V
ns
ns
ns
ns
PGOOD Threshold
PGOOD Low Voltage
I PGOOD = 100μA
●
●
720
740
765
0.2
mV
V
PGOOD Current Capacity
500
μA
Internal Boost Switching Frequency
Internal Boost Switch Current Limit
(BIAS – V IN ) in Operation
(BIAS – V IN ) to Start Controller
0.8
360
1
440
7.8
7.2
1.2
520
MHz
mA
V
V
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 LT3740E is guaranteed to meet performance speci?cations
from 0°C to 85°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: The minimum off time of the LT3740 application consists of the
minimum BGATE on time, the delay from TGATE OFF to BGATE ON (80ns)
and the delay from BGATE OFF to TGATE ON (80ns).
TYPICAL PERFORMANCE CHARACTERISTICS
(T A = 25°C, unless otherwise noted)
Transient Response
Transient Response
Shutdown Pin Start-Up
V OUT
50mV/DIV
LOAD STEP 0A TO 10A
LOAD STEP 0A TO 10A
V IN = 5V, V OUT = 1.8V
PAGE 17 CIRCUIT
V OUT
50mV/DIV
SHDN
2V/DIV
I L
2A/DIV
V IN = 10V, V OUT = 2.5V
FIGURE 4 CIRCUIT
V O
2V/DIV
I L
5A/DIV
I L
5A/DIV
V IN = 10V, V OUT = 2.5V
I LOAD = 3A
20μs/DIV
3740 G01
10μs/DIV
3740 G02
2ms/DIV
3740 G03
3740fc
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3741 | 制造商:LINER 制造商全称:Linear Technology 功能描述:High Voltage, Current Mode Switching Regulator Controller Thermal Shutdown |
| LT3741EFE#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 20TSSOP 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 |
| LT3741EFE#PBF | 制造商:Linear Technology 功能描述:DC-DC CONTROLLER BUCK 1MHZ 制造商:Linear Technology 功能描述:DC-DC CONTROLLER, BUCK, 1MHZ, TSSOP-20 |
| LT3741EFE#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 20TSSOP 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:4,500 系列:PowerWise® PWM 型:控制器 输出数:1 频率 - 最大:1MHz 占空比:95% 电源电压:2.8 V ~ 5.5 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 ~ 125°C 封装/外壳:6-WDFN 裸露焊盘 包装:带卷 (TR) 配用:LM1771EVAL-ND - BOARD EVALUATION LM1771 其它名称:LM1771SSDX |
| LT3741EFEPBF | 制造商:Linear Technology 功能描述:Step-Down Controller TSSOP20EP |
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