参数资料
| 型号： | LT1185IT#30PBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/16页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO NEG ADJ 3A TO220-5 |
| 标准包装： | 50 |
| 稳压器拓扑结构： | 负，可调式 |
| 输出电压： | -2.5 V ~ -25 V |
| 输入电压： | -4.2 V ~ -35 V |
| 电压 - 压降（标准）： | 0.67V @ 3A |
| 稳压器数量： | 1 |
| 电流 - 输出： | 3A |
| 电流 - 限制（最小）： | 可调式 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-220-5 成形引线 |
| 供应商设备封装： | TO-220-5 |
| 包装： | 管件 |
LT1185
ABSOLUTE
AXI U
RATI GS
(Note 1)
Input Voltage .......................................................... 35V
Input-Output Differential ......................................... 30V
FB Voltage ................................................................ 7V
REF Voltage .............................................................. 7V
Output Voltage ........................................................ 30V
Output Reverse Voltage ............................................ 2V
Operating Ambient Temperature Range
LT1185C ............................................... 0 ° C to 70 ° C
LT1185I ............................................. – 40 ° C to 85 ° C
LT1185M (OBSOLETE) .................... – 55 ° C to 125 ° C
*See Application Section for details on calculating Operation Junction Temperature
PACKAGE/ORDER I FOR ATIO
BOTTOM VIEW
Operating Junction Temperature Range*
Control Section
LT1185C ............................................. 0 ° C to 125 ° C
LT1185I .......................................... – 40 ° C to 125 ° C
LT1185M (OBSOLETE) ................... – 55 ° C to 150 ° C
Power Transistor Section
LT1185C ............................................. 0 ° C to 150 ° C
LT1185I .......................................... – 40 ° C to 150 ° C
LT1185M (OBSOLETE) ................... – 55 ° C to 175 ° C
Storage Temperature Range ................ – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec)................ 300 ° C
GND
FB
FRONT VIEW
FRONT VIEW
V OUT
1
4
2
3
REF
V IN (CASE)
TAB
IS
V IN
5
4
3
2
1
REF
V OUT
V IN
FB
GND
5
4
3
2
1
REF
V OUT
V IN
FB
GND
K PACKAGE
4-LEAD TO-3 METAL CAN
θ JC MAX = 2.5 ° C/ W, θ JA = 35 ° C/W
Q PACKAGE
5-LEAD PLASTIC DD
T JMAX = 150 ° C, θ JA = 30 ° C/W
TAB IS V IN
T PACKAGE
5-LEAD PLASTIC TO-220
θ JC MAX = 2.5 ° C/ W, θ JA = 50 ° C/W
OBSOLETE PACKAGE
ORDER PART
NUMBER
LT1185MK
ORDER PART
NUMBER
LT1185CQ
LT1185IQ
ORDER PART
NUMBER
LT1185CT
LT1185IT
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the operating temperature range, otherwise specifications are at T A = 25 ° C.
Adjustable version, V IN = 7.4V, V OUT = 5V, I OUT = 1mA, R LIM = 4.02k, unless otherwise noted.
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Reference Voltage (At FB Pin)
2.37
V
Reference Voltage Tolerance (At FB Pin) (Note 2)
V IN – V OUT = 5V, V OUT = V REF
0.3
± 1
%
1mA ≤ I OUT ≤ 3A
●
1
± 2.5
%
V IN – V OUT = 1.2V to V IN = 30V
P ≤ 25W (Note 6), V OUT = 5V
T MIN ≤ T J ≤ T MAX (Note 9)
Feedback Pin Bias Current
Droput Voltage (Note 3)
V OUT = V REF
I OUT = 0.5A, V OUT = 5V
I OUT = 3A, V OUT = 5V
●
0.7
0.20
0.67
2
0.37
1.00
μ A
V
V
1185ff
2
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