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參數(shù)資料
| 型號： | UC286Q |
| 英文描述： | Door actuator driver |
| 中文描述： | 模擬IC |
| 文件頁數(shù)： | 1/13頁 |
| 文件大小： | 265K |
| 代理商： | UC286Q |
SLUS212E NOVEMBER 1999 REVISED FEBRUARY 2004
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Fast Transient Response
10-mA to 5-A Load Current
Short Circuit Protection
Maximum Dropout of 500-mV at 5-A Load
Current
Separate Bias (VB) and VIN Pins
Available in Adjustable or Fixed Output
Voltages
5-Pin Package Allows Kelvin Sensing of
Load Voltage
Reverse Current Protection
description
The UC385 is a low dropout linear regulator providing a quick response to fast load changes. Combined with
its precision onboard reference, the UC385 excels at driving GTL and BTL buses. Due to its fast response to
load transients, the total capacitance required to decouple the regulator’s output can be significantly decreased
when compared to standard LDO linear regulators.
Dropout voltage (VIN to VOUT) is only 490 mV maximum and 350 mV typical at 5-A load (0
°
C to 100
°
C).
The onboard bandgap reference is stable with temperature and scaled for a 1.2 V input to the internal power
amplifier. The UC385 is available in fixed output voltages of 1.5 V, 2.1 V, or 2.5 V. The output voltage of the
adjustable version can be set with two external resistors. If the external resistors are omitted, the output voltage
defaults to 1.2 V.
block diagram
+
THERMAL
SHUTDOWN
1.2 V
BANDGAP
REFERENCE
R2
R1
3
5
SHORT
CIRCUIT
SENSE
2
1
4
UC382ADJ
UC3821 (1.5 V)
UC3822 (2.1 V)
UC3823 (2.5 V)
OPEN
2 k
2 k
2 k
0
500
1.5 k
2.16 k
R1
R2
ADJ
GND
VOUT
VIN
VB
UDG-00084
Copyright
19982004, Texas Instruments Incorporated
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
5-PIN TO-263
TD PACKAGE
(TOP VIEW)
5-PIN TO-220
T PACKAGE (TOP VIEW)
Note: Tab = Ground
All trademarks are the property of their respective owners.
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