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参数资料
| 型号： | LT1938IDD#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 4 A SWITCHING REGULATOR, 3300 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | 3 X 3 MM, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10 |
| 文件页数： | 18/24页 |
| 文件大小： | 260K |
| 代理商： | LT1938IDD#PBF |
LT1938
3
1938fa
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Error Amp gm
330
Mho
Error Amp Gain
1000
VC Source Current
75
A
VC Sink Current
100
A
VC Pin to Switch Current Gain
3.5
A/V
VC Clamp Voltage
2
V
Switching Frequency
RT = 8.66k
RT = 29.4k
RT = 187k
2.7
1.25
250
3.0
1.4
300
3.3
1.55
350
MHz
kHz
Minimum Switch Off-Time
●
100
150
nS
Switch Current Limit
Duty Cycle = 5%
3.1
3.6
4.0
A
Switch VCESAT
ISW = 2A
360
mV
Boost Schottky Reverse Leakage
VSW = 10V, VBIAS = 0V
0.02
2
A
Minimum Boost Voltage (Note 4)
●
1.6
2.1
V
BOOST Pin Current
ISW = 1A
18
30
mA
RUN/SS Pin Current
VRUN/SS = 2.5V
5
10
A
RUN/SS Input Voltage High
2.5
V
RUN/SS Input Voltage Low
0.2
V
PG Threshold Offset from Feedback Voltage
VFB Rising
100
mV
PG Hysteresis
10
mV
PG Leakage
VPG = 5V
0.1
1
A
PG Sink Current
VPG = 0.4V
●
100
300
A
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 LT1938E is guaranteed to meet performance specifications
from 0°C to 125°C. Specifications over the –40°C to 125°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls. The LT1938I specifications are
guaranteed over the –40°C to 125°C temperature range.
Note 3: Bias current measured in regulation. Bias current flows into the FB
pin.
Note 4: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the switch.
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 10V, VRUN/SS = 10V VBOOST = 15V, VBIAS = 3.3V unless otherwise
noted. (Note 2)
ELECTRICAL ChARACTERISTICS
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1939 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller |
| LT1939EDD#PBF | 功能描述:IC REG DL BUCK/LINEAR 12DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| LT1939EDD#TRPBF | 功能描述:IC REG DL BUCK/LINEAR 12DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 + 切换式 系列:- 标准包装:2,500 系列:- 拓扑:降压（降压）同步（3），线性（LDO）（2） 功能:任何功能 输出数:5 频率 - 开关:300kHz 电压/电流 - 输出 1:控制器 电压/电流 - 输出 2:控制器 电压/电流 - 输出 3:控制器 带 LED 驱动器:无 带监控器:无 带序列发生器:是 电源电压:5.6 V ~ 24 V 工作温度:-40°C ~ 85°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| LT1939EDD-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller |
| LT1939EDD-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Monolithic 2A Step-Down Regulator Plus Linear Regulator/Controller |
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