参数资料
| 型号： | LT1581CT7 |
| 厂商： | Linear Technology |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC LDO REGULATOR 10A ADJ TO220-7 |
| 标准包装： | 50 |
| 应用： | 转换器，Intel Pentium? |
| 输入电压： | 1.68 V ~ 6 V |
| 输出数： | 1 |
| 输出电压： | 1.25 V ~ 4.65 V |
| 工作温度： | 0°C ~ 125°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-220-7 成形引线 |
| 供应商设备封装： | TO-220-7 |
| 包装： | 管件 |
LT1581/LT1581-2.5
ABSOLUTE M AXI M U M RATINGS
(Note 1)
PACKAGE/ORDER I N FOR M ATIO N
V POWER Input Voltage ................................................ 6V
V CONTROL Input Voltage ........................................... 13V
Operating Junction Temperature Range
Control Section ...................................... 0 ° C to 125 ° C
Power Transistor ................................... 0 ° C to 150 ° C
Storage Temperature ............................ – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec).................. 300 ° C
TAB IS
OUTPUT
FRONT VIEW
7
6
5
4
3
2
1
T7 PACKAGE
7-LEAD PLASTIC TO-220
NC
V CONTROL
V POWER
OUTPUT
SENSE
NC/GND*
ADJUST
ORDER PART
NUMBER
LT1581CT7
LT1581CT7-2.5
θ JA = 50 ° C/ W
PRECO N DITIO N I N G
100% Thermal Limit Functional Test
*PIN2 = NC FOR LT1581CT7, GND FOR LT1581CT7-2.5
Consult factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS The q denotes specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25 ° C. (Note 2)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Output Voltage:
LT1581-2.5
V CONTROL = 5V, V POWER = 3.3V, I LOAD = 0mA
V CONTROL = 4V to 12V, V POWER = 3V to 5.5V, I LOAD = 0mA to 4A
V CONTROL = 4V to 12V, V POWER = 3.3V to 5.5V, I LOAD = 0mA to 10A
q
q
2.485
2.475
2.475
2.500
2.500
2.500
2.515
2.525
2.525
V
V
V
Reference Voltage: LT1581
V CONTROL = 2.75V, V POWER = 2V, I LOAD = 10mA
1.243
1.250
1.257
V
(V ADJ = 0V)
Line Regulation: LT1581-2.5
LT1581
Load Regulation: LT1581-2.5
LT1581 (V ADJ = 0V)
Minimum Load Current: LT1581
Control Pin Current: LT1581-2.5
(Note 5)
Control Pin Current: LT1581
(Note 5)
Ground Pin Current: LT1581-2.5
V CONTROL = 2.7V to 12V, V POWER = 1.75V to 5.5V, I LOAD = 0mA to 4A
V CONTROL = 2.7V to 12V, V POWER = 2.05V to 5.5V, I LOAD = 0mA to 10A
V CONTROL = 3.65V to 12V, V POWER = 3V to 5.5V, I LOAD = 10mA
V CONTROL = 2.5V to 12V, V POWER = 1.75V to 5.5V, I LOAD = 10mA
V CONTROL = 5V, V POWER = 3.3V, I LOAD = 0mA to 10A
V CONTROL = 2.75V, V POWER = 2.1V, I LOAD = 10mA to 10A
V CONTROL = 5V, V POWER = 3.3V, V ADJ = 0V (Note 4)
V CONTROL = 5V, V POWER = 3.3V, I LOAD = 100mA
V CONTROL = 5V, V POWER = 3.3V, I LOAD = 4A
V CONTROL = 5V, V POWER = 3.3V, I LOAD = 7A
V CONTROL = 5V, V POWER = 3.3V, I LOAD = 10A
V CONTROL = 2.75V, V POWER = 2.05V, I LOAD = 100mA
V CONTROL = 2.75V, V POWER = 2.05V, I LOAD = 4A
V CONTROL = 2.75V, V POWER = 2.05V, I LOAD = 7A
V CONTROL = 2.75V, V POWER = 2.05V, I LOAD = 10A
V CONTROL = 5V, V POWER = 3.3V, I LOAD = 0mA
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
q
1.237
1.237
1.250
1.250
1
1
1
1
3
5
20
40
70
5
20
40
70
6
1.263
1.263
3
3
10
5
10
10
50
100
170
10
50
100
170
10
V
V
mV
mV
mV
mV
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
Adjust Pin Current: LT1581 (V ADJ = 0V) V CONTROL = 2.75V, V POWER = 2.05V, I LOAD = 10mA
q
60
120
μ A
Current Limit:
LT1581-2.5
LT1581 (V ADJ = 0V)
V CONTROL = 5V, V POWER = 3.3V, ? V OUT = 100mV
V CONTROL = 2.75V, V POWER = 2.05V, ? V OUT = 100mV
q
q
10.1
10.1
11
11
A
A
Ripple Rejection: LT1581-2.5
LT1581
V CONTROL = V POWER = 5V Avg, V RIPPLE = 1V P-P , f RIPPLE = 120Hz,
I OUT = 4A, T J = 25 ° C
V CONTROL = V POWER = 3.75V Avg, V RIPPLE = 1V P-P , f RIPPLE = 120Hz,
V ADJ = 0V, I OUT = 4A, T J = 25 ° C
55
60
80
80
dB
dB
Thermal Regulation
Thermal Resistance, Junction-to-Case
30ms Pulse
Control Circuitry/Power Transistor
0.004
0.65/2.50
0.020
%/W
° C/W
2
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