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参数资料
| 型号： | LT3463EDD#TR |
| 厂商： | Linear Technology |
| 文件页数： | 3/8页 |
| 文件大小： | 0K |
| 描述： | IC REG INV ADJ 0.25A DL 10DFN |
| 标准包装： | 2,500 |
| 类型： | 反相 |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 1.25 V ~ 40 V |
| 输入电压： | 2.4 V ~ 15 V |
| 电流 - 输出： | 250mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-DFN（3x3） |
LT3463/LT3463A
TYPICAL PERFOR A CE CHARACTERISTICS
V CESAT and V DIODE Voltage
V REF and V FB1 Voltage
V FB2 Voltage
900
FOR BOTH SWITCHERS
1.27
10
800
700
I DIODE = 150mA
1.26
8
600
500
400
1.25
1.24
V FB1
V REF
6
4
300
200
100
0
I SWITCH = 150mA
1.23
1.22
2
0
–50 –25
0
25
50
75
100
125
–50 –25
0
25
50
75
100
125
–50 –25
0
25
50
75
100
125
400
TEMPERATURE ( ° C)
Switch Off Time
3463 G01
450
TEMPERATURE ( ° C)
Switch Current Limit
3463 G02
60
TEMPERATURE ( ° C)
Quiescent Current
3463 G03
350
300
250
400
350
300
LT3463A SW2
50
40
250
200
150
200
150
LT3463 SW1, SW2
LT3463A SW1
30
20
100
50
100
50
10
NOT SWITCHING
V FB1 = 1.3V
0
–50 –25
0
25
50
75
100
125
0
–50 –25
0
25
50
75
100
125
V FB2 = –0.1V
0
–50 –25 0
25
50
75
100
125
TEMPERATURE ( ° C)
PI FU CTIO S
3463 G04
TEMPERATURE ( ° C)
3463 G05
TEMPERATURE ( ° C)
3463 G06
V OUT1 (Pin 1): Output Voltage Switcher 1. This is the
cathode of an internal Schottky diode whose anode is
connected to the SW1 pin.
SW1 (Pin 2): Switch Pin for Switcher 1. This is the
collector of the internal NPN switch. Minimize the metal
trace area connected to this pin to minimize EMI.
V IN (Pin 3): Input Supply Pin. Bypass this pin with a
capacitor as close to the device as possible.
SW2 (Pin 4): Switch Pin for Switcher 2. This is the
collector of the internal NPN switch. Minimize the metal
trace area connected to this pin to minimize EMI.
D2 (Pin 5): Diode for Switcher 2. This is the anode of an
internal Schottky diode whose cathode connected to the
GND pin.
FB2 (Pin 6): Feedback Pin for Switcher 2. Set the output
voltage by selecting values for R3 and R4.
V REF (Pin 7): Voltage Reference Pin (1.25V). This pin is
used along with FB2 to set the negative output voltage for
Switcher 2.
SHDN2 (Pin 8): Shutdown Pin for Switcher 2. Pull this pin
above 1.5V to enable Switcher 2. Pull below 0.3V to turn
it off. Do not leave this pin floating.
3463f
3
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