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参数资料
| 型号： | LT3509HMSE#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.2 A DUAL SWITCHING CONTROLLER, 2500 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | LEAD FREE, PLASTIC, MSOP-16 |
| 文件页数： | 18/24页 |
| 文件大小： | 271K |
| 代理商： | LT3509HMSE#TRPBF |
LT3509
3
3509fc
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.
Note 2. Absolute Maximum Voltage at the VIN pin is 60V for non-repetitive
1 second transients and 36V for continuous operation.
Note 3. The LT3509E is guaranteed to meet performance specications from
0°C to 125°C junction temperature. Specications over the –40°C to 125°C
operating junction temperature range are assured by design, characterization
and correlation with statistical process controls. The LT3509I is guaranteed
over the full –40°C to 125°C temperature range. The LT3509H is guaranteed
The
l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C, VIN = 12V. (Note 3)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VIN Undervoltage Lockout
3.3
3.6
V
VIN Overvoltage Lockout
37
38.5
40
V
Input Quiescent Current
Not Switching VFB > 0.8V
1.9
2.2
mA
Input Shutdown Current
V(RUN/SS[1,2]) < 0.3V
9
15
μA
Feedback Pin Voltage
l
0.784
0.8
0.816
V
Reference Voltage Line Regulation
3.6V < VIN < 36V
0.01
%/V
RUN/SS Shutdown Threshold
0.4
0.6
0.8
V
RUN/SS Voltage for Full IOUT
2V
RUN/SS Pin Pull-up Current
0.7
1
1.3
μA
Feedback Pin Bias Current (Note 4)
VFB = 0.8V
l
90
500
nA
Switch Current Limit
l
1.05
1.4
1.9
A
DA Comparator Current Threshold
0.7
0.95
1.2
A
Boost Pin Current
ISW = 0.9A
22
36
mA
Switch Leakage Current
0.01
1.0
μA
Switch Saturation Voltage
ISW = 0.9A (Note 5)
0.32
V
Minumum Boost Voltage above Switch
ISW = 0.9A
1.5
2.2
V
Boost Diode Forward Voltage
IBD= 20mA
0.7
0.9
V
Boost Diode Leakage
VR = 30V
0.1
5
μA
Switching Frequency
RT = 40.2kΩ
RT = 180kΩ
RT = 14.1kΩ
l
0.92
237
2.0
1.0
260
2.15
1.08
290
2.5
MHz
kHz
MHz
Sync Pin Input Threshold
1.0
V
Switch Minimum Off-Time
l
80
150
ns
over the full –40°C to 150°C operating junction temperature range. High
junction temperatures degrade operating lifetimes. Operating lifetime is
derated at junction temperatures greater than 125°C.
Note 4. Current ows out of pin.
Note 5. Switch Saturation Voltage is guaranteed by design.
Note 6. This IC includes overtemperature protection that is intended to protect
the device during momentary overload conditions. Junction temperature will
exceed the maximum operating temperature when overtemperature protection
is active. Continuous operation above the specied maximum operating
junction temperature may impair device reliability.
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相关代理商/技术参数 |
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|---|---|
| LT3509IDE#PBF | 功能描述:IC REG BUCK ADJ 0.7A DL 14DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LT3509IDE#PBF | 制造商:Linear Technology 功能描述:DC-DC CONVERTER BUCK 2.2MHZ 制造商:Linear Technology 功能描述:DC-DC CONVERTER, BUCK, 2.2MHZ, DFN-14 |
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| LT3509IDE-PBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 36V, 700mA Step-Down Regulator |
| LT3509IDE-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 36V, 700mA Step-Down Regulator |
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