参数资料
| 型号： | LT3029IDE#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 4/20页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .5A 16DFN |
| 产品培训模块： | LT3029 - 500mA, Dual Output, 1.2 ~ 19.5V, Linear Regulator |
| 标准包装： | 91 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.215 V ~ 19.5 V |
| 输入电压： | 1.8 V ~ 20 V |
| 电压 - 压降（标准）： | 0.3V @ 500mA |
| 稳压器数量： | 2 |
| 电流 - 输出： | 500mA |
| 电流 - 限制（最小）： | 520mA |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFDFN 裸露焊盘 |
| 供应商设备封装： | 16-DFN（4x3） |
| 包装： | 管件 |
LT3029
ELECTRICAL CHARACTERISTICS
Note 7: GND pin current is tested with V IN = 2.437V and a current source
load. This means the device is tested while operating in its dropout region
or at the minimum input voltage speci?cation. This is the worst-case
GND pin current. The GND pin current decreases slightly at higher input
voltages. Total GND pin current equals the sum of output 1 and output 2
GND pin currents.
Note 8: ADJ1/ADJ2 pin bias current ?ows into the pin.
Note 9: The LT3029 contains current limit foldback circuitry. See the
Typical Performance Characteristics for current limit as a function of the
V IN – V OUT differential voltage.
Note 10: SHDN1 / SHDN2 pin current ?ows into the pin.
Note 11: The LT3029 minimum input voltage speci?cation limits dropout
voltage under some output voltage/load conditions. See the curve of
Minimum Input Voltage in the Typical Performance Characteristics.
Note 12: The LT3029 includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature exceeds 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
T J = 25°C, unless otherwise noted.
Typical Dropout Voltage
Guaranteed Dropout Voltage
500
500
= TEST POINTS
450
400
350
300
250
200
150
100
50
T J = 150°C
T J = 125°C
T J = 25°C
T J = –55°C
450
400
350
300
250
200
150
100
50
T J = 150°C
T J = 25°C
0
0
50 100 150 200 250 300 350 400 450 500
0
0
50 100 150 200 250 300 350 400 450 500
OUTPUT CURRENT (mA)
3029 G01
Dropout Voltage vs Temperature
OUTPUT CURRENT (mA)
3029 G02
Quiescent Current (per Channel)
500
450
400
350
300
250
I L = 500mA
I L = 250mA
I L = 100mA
150
125
100
75
V IN = 6V
R L = 243k, I L = 5μA
V SHDN = V IN
200
150
100
I L = 10mA
50
25
50
I L = 1mA
I L = 50mA
0
–75 –50 –25 0
25 50 75 100 125 150 175
0
–75 –50 –25 0
25 50 75 100 125 150 175
TEMPERATURE (°C)
3029 G03
TEMPERATURE (°C)
3029 G04
3029fa
4
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