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参数资料
| 型号： | LT3740EDHC |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.14 A SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | 5 X 3 MM, PLASTIC, MO-229WJED-1, DFN-16 |
| 文件页数： | 14/20页 |
| 文件大小： | 234K |
| 代理商： | LT3740EDHC |
LT3740
3
3740fc
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.
The
l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C, VIN = 5V unless otherwise noted. (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
SHDN Voltage to Enable Device
●
1.1
V
SHDN Voltage to Disable Device
●
0.5
V
TGATE On Voltage
5.5
V
TGATE Off Voltage
0.2
V
BGATE On Voltage
5.5
V
BGATE Off Voltage
0.2
V
TGATE Rise Time
CLOAD = 3300pF
30
ns
TGATE Fall Time
CLOAD = 3300pF
30
ns
BGATE Rise Time
CLOAD = 3300pF
50
ns
BGATE Fall Time
CLOAD = 3300pF
50
ns
PGOOD Threshold
●
720
740
765
mV
PGOOD Low Voltage
IPGOOD = 100μA
●
0.2
V
PGOOD Current Capacity
500
μA
Internal Boost Switching Frequency
0.8
1
1.2
MHz
Internal Boost Switch Current Limit
360
440
520
mA
(BIAS – VIN) in Operation
7.8
V
(BIAS – VIN) to Start Controller
7.2
V
Note 2: The LT3740E is guaranteed to meet performance specications
from 0°C to 85°C. Specications 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
Transient Response
Shutdown Pin Start-Up
(TA = 25°C, unless otherwise noted)
LOAD STEP 0A TO 10A
VIN = 10V, VOUT = 2.5V
FIGURE 4 CIRCUIT
VOUT
50mV/DIV
IL
5A/DIV
3740 G01
20μs/DIV
LOAD STEP 0A TO 10A
VIN = 5V, VOUT = 1.8V
PAGE 17 CIRCUIT
VOUT
50mV/DIV
IL
5A/DIV
3740 G02
10μs/DIV
3740 G03
VIN = 10V, VOUT = 2.5V
ILOAD = 3A
SHDN
2V/DIV
VO
2V/DIV
IL
2A/DIV
2ms/DIV
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相关代理商/技术参数 |
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|---|---|
| LT3740EDHC#PBF | 功能描述:IC REG CTRLR BUCK PWM CM 16-DFN 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 |
| LT3740EDHC#TRPBF | 功能描述:IC REG CTRLR BUCK PWM CM 16-DFN 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) |
| LT3740EDHC-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Wide Operating Range, Valley Mode, No RSENSE? Synchronous Step-Down Controller |
| LT3740EDHC-TR | 制造商:LINER 制造商全称:Linear Technology 功能描述:Wide Operating Range, Valley Mode, No RSENSE? Synchronous Step-Down Controller |
| LT3740EDHC-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Wide Operating Range, Valley Mode, No RSENSE? Synchronous Step-Down Controller |
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