参数资料
| 型号： | LT1185IT#30PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/16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
Low Dropout Regulator
FEATURES
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■
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■
■
■
■
■
■
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Low Resistance Pass Transistor: 0.25 ?
Dropout Voltage: 0.75V at 3A
± 1% Reference Voltage
Accurate Programmable Current Limit
Shutdown Capability
Internal Reference Available
Full Remote Sense
Low Quiescent Current: 2.5mA
Good High Frequency Ripple Rejection
Available in 5-Lead TO-220 and DD Packages
The LT1185 uses a saturation-limited NPN transistor as
the pass element. This device gives the linear dropout
characteristics of a FET pass element with significantly
less die area. High efficiency is maintained by using special
anti-saturation circuitry that adjusts base drive to track
load current. The “on resistance” is typically 0.25 ? .
Accurate current limit is programmed with a single 1/8W
external resistor, with a range of zero to three amperes. A
second, fixed internal limit circuit prevents destructive
currents if the programming current is accidentally over-
DESCRIPTIO
The LT ? 1185 is a 3A low dropout regulator with adjustable
current limit and remote sense capability. It can be used as
a positive output regulator with floating input or as a
standard negative regulator with grounded input. The
output voltage range is 2.5V to 25V, with ± 1% accuracy on
the internal reference voltage.
TYPICAL APPLICATIO
5V, 3A Regulator with 3.5A Current Limit
ranged. Shutdown of the regulator output is guaranteed
when the program current is less than 1 μ A, allowing
external logic control of output voltage.
The LT1185 has all the protection features of previous
LTC regulators, including power limiting and thermal
shutdown.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Dropout Voltage
+
+
2 μ F
TANT
R LIM *
4.3k
2.37k
+
1.6
1.4
V IN
1.2
6V TO 16V
REF
GND
FB
+
2 μ F
TANT
V OUT
5V AT 3A
1.0
T J = 25 ° C
–
V IN
LT1185
V OUT
2.67k
LT1185 ? TA01
–
0.8
0.6
0.4
T J = 125 ° C
T J = –55 ° C
0.2
*CURRENT LIMIT = 15k/R LIM = 3.5A
0
0
1
2
3
4
LOAD CURRENT (A)
LT1185 ? TA02
1185ff
1
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| LT1186FCS#PBF | 功能描述:IC SWTCH REG CCFL DAC PROG16SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 照明，镇流器控制器 系列:Bits-to-Nits™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:CCFL 控制器 频率:40 ~ 80 kHz 电流 - 电源:5mA 电流 - 输出:- 电源电压:4.5 V ~ 5.5 V 工作温度:-40°C ~ 85°C 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) 其它名称:90-3991V+V01 |
| LT1186FCS#TR | 功能描述:IC REG SW CCFL DAC PROG 16SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 照明，镇流器控制器 系列:Bits-to-Nits™ 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:CCFL 控制器 频率:40 ~ 80 kHz 电流 - 电源:5mA 电流 - 输出:- 电源电压:4.5 V ~ 5.5 V 工作温度:-40°C ~ 85°C 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:带卷 (TR) 其它名称:90-3991V+V01 |
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