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| 型号： | LT3509IDE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 3/24页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 0.7A DL 14DFN |
| 标准包装： | 91 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 0.8 V ~ 35.3 V |
| 输入电压： | 3.6 V ~ 36 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 260kHz ~ 2.15MHz |
| 电流 - 输出： | 700mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-WFDFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 14-DFN-EP（4x3） |
LT3509
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 = 12V. (Note 3)
PARAMETER
V IN Undervoltage Lockout
CONDITIONS
MIN
TYP
3.3
MAX
3.6
UNITS
V
V IN Overvoltage Lockout
Input Quiescent Current
Input Shutdown Current
Not Switching V FB > 0.8V
V(RUN/SS[1,2]) < 0.3V
37
38.5
1.9
9
40
2.2
15
V
mA
μA
Feedback Pin Voltage
Reference Voltage Line Regulation
RUN/SS Shutdown Threshold
3.6V < V IN < 36V
l
0.784
0.4
0.8
0.01
0.6
0.816
0.8
V
%/V
V
RUN/SS Voltage for Full I OUT
2
V
RUN/SS Pin Pull-up Current
0.7
1
1.3
μA
Feedback Pin Bias Current (Note 4)
V FB = 0.8V
l
90
500
nA
Switch Current Limit
l
1.05
1.4
1.9
A
DA Comparator Current Threshold
Boost Pin Current
Switch Leakage Current
Switch Saturation Voltage
Minumum Boost Voltage above Switch
Boost Diode Forward Voltage
Boost Diode Leakage
I SW = 0.9A
I SW = 0.9A (Note 5)
I SW = 0.9A
I BD = 20mA
V R = 30V
0.7
0.95
22
0.01
0.32
1.5
0.7
0.1
1.2
36
1.0
2.2
0.9
5
A
mA
μA
V
V
V
μA
Switching Frequency
R T = 40.2kΩ
R T = 180kΩ
R T = 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
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 V IN pin is 60V for non-repetitive
1 second transients and 36V for continuous operation.
Note 3. The LT3509E is guaranteed to meet performance speci?cations from
0°C to 125°C junction temperature. Speci?cations 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 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 speci?ed maximum operating
junction temperature may impair device reliability.
over the full –40°C to 125°C temperature range. The LT3509H is guaranteed
3509fc
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3509IDE-TRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual 36V, 700mA Step-Down Regulator |
| LT3509IMSE#PBF | 功能描述:IC REG BUCK ADJ 0.7A DL 16MSOP 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:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LT3509IMSE#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, MSOP-16 |
| LT3509IMSE#TRPBF | 功能描述:IC REG BUCK ADJ 0.7A DL 16MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
| LT3509IMSE-PBF | 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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