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| 型号： | LT3500IDD#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/28页 |
| 文件大小： | 322K |
| 描述： | IC REG DL BUCK/LINEAR 12-DFN |
| 标准包装： | 2,500 |
| 拓扑： | 降压（降压）（1），线性（LDO）（1） |
| 功能： | 任何功能 |
| 输出数： | 2 |
| 频率 - 开关： | 500kHz ~ 2.4MHz |
| 电压/电流 - 输出 1： | 0.8 V ~ 38.9 V，2A |
| 电压/电流 - 输出 2： | 可调式，13mA |
| 带 LED 驱动器： | 无 |
| 带监控器： | 无 |
| 带序列发生器： | 无 |
| 电源电压： | 3 V ~ 36 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 12-WFDFN 裸露焊盘 |
| 供应商设备封装： | 12-DFN |
| 包装： | 带卷 (TR) |
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LT3500
4
3500fc
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
LFB Voltage
V
LDRV
= V
LFB
l
0.784 0.8 0.816 V
LFB Line/Load Regulation
V
VIN
= 3V to 40V, V
LDRV
= V
LFB
l 0.776 0.8 0.824 V
SS to LFB Offset (V
SS
V
LFB
)
V
SS
= 0.8V, V
LDRV
= V
LFB
90 115 140 mV
LFB Bias Current
V
LFB
= 0.8V
115 300 nA
LDRV Dropout (V
VIN
V
LDRV
)
V
LDRV
= 3V, I
LDRV
= 5mA
l
0.8 1.2 1.6
V
LDRV Maximum Current
V
LDRV
= 0V
l 9 13 18 mA
ELECTRICAL CHARACTERISTICS
The l denotes the speci cations which apply over the full operating
temperature range, otherwise speci cations are at T
J
= 25癈. V
VIN
= 15V, V
RT/SYNC
= 2V, unless otherwise speci ed.
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.
Note2: The LT3500EDD/LT3500EMSE is guaranteed to meet performance
speci cations from 0癈 to 125癈 junction temperature. Speci cations over
the 40癈 to 125癈 operating junction temperature range are assured by
design, characterization and correlation with statistical process controls.
The LT3500IDD/LT3500IMSE is guaranteed over the full 40癈 to 125癈
operating junction temperature range. The LT3500HDD/LT3500HMSE is
guaranteed over the full 40癈 to 150癈 operating junction temperature
range. High junction temperatures degrade operating lifetimes. Operating
lifetime is derated at junction temperatures greater than 125癈.
Note 3: Minimum input voltage is de ned as the voltage where internal
bias lines are regulated so that the reference voltage and oscillator remain
constant. Actual minimum input voltage to maintain a regulated output
will depend upon output voltage and load current. See Applications
Information.
Note 4: An internal power-on reset (POR) latch is set on the positive
transition of the SHDN pin through its threshold. The output of the latch
activates a current source on the SS pin which typically sinks 600糀,
discharging the SS capacitor. The latch is reset when the SS pin is driven
below the soft-start POR threshold or the SHDN pin is taken below its
threshold.
Note 5: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the internal power switch.
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 junction temperature
when overtemperature protection is active. Continuous operation above
the speci ed maximum operating junction temperature may impair device
reliability.
TYPICAL PERFORMANCE CHARACTERISTICS
Feedback Voltage vs Temperature
R
T
/SYNC Voltage vs Temperature
Shutdown Threshold and Minimum
Input Voltage vs Temperature
TEMPERATURE (癈)
50
0.800
FB
LFB
0.810
150
3500 G01
0.790
0.780
0
50
100
25
25
75
125
0.820
0.795
0.805
0.785
0.815
TEMPERATURE (癈)
50
0.90
0.92
0.96
0.98
1.00
1.10
1.04
0
50 75
3500 G02
0.94
1.06
1.08
1.02
25
25
100 125 150
R
RT/SYNC
= 90.9k
R
RT/SYNC
= 15k
TEMPERATURE (癈)
50
2.0
2.5
3.0
25
75
3500 G03
1.5
1.0
25 0
50
100 150
125
0.5
0
MINIMUM INPUT VOLTAGE
SHUTDOWN THRESHOLD
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT3500IMSE#PBF | 功能描述:IC REG DL BUCK/LINEAR 16-MSOP 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:* |
| LT3500IMSE#TRPBF | 功能描述:IC REG DL BUCK/LINEAR 16-MSOP 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:* |
| LT3500IMSE-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 |
| LT3500IMSE-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 |
| LT3500T | 制造商:Eaton Corporation 功能描述:TYPE LT TRIP UNIT ONLY 3P 500A 600VAC MAX |
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