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參數(shù)資料
| 型號： | UC3836QTR |
| 英文描述： | Rad-hard 8 bit shift register with output latches (3 state) |
| 中文描述： | 積極可調(diào)電壓穩(wěn)壓器 |
| 文件頁數(shù)： | 3/5頁 |
| 文件大?。?/td> | 501K |
| 代理商： | UC3836QTR |
UC1835 UC1836
UC2835 UC2836
UC3835 UC3836
PARAMETER
TEST CONDITIONS
MIN.
TYP.
MAX. UNITS
Regulating Voltage and Error Amplifier
(UC1836 Family Only)
Regulating Level at V
OUT
Sense (V
REG
)
Driver Current = 10mA, T
J
= 25°C
Over Temperature
+V
IN
= 5.2V to 35V
Driver Current = 0 to 250mA
V
OUT
Sense =2.5V
±
100
μ
A at Compensation/Shutdown Pin
Sink or Source, Driver Source Open
2.47
2.45
2.5
2.53
2.55
20
15
V
V
Line Regulation
Load Regulation
Bias Current at V
OUT
Sense
Error Amp Transconductance
Maximum Compensation Output Current
Driver
Maximum Current
Saturation Voltage
Pull-Up Current at Driver Sink
Driver Sink Leakage
6.0
3.0
-0.2
1.3
200
mV
mV
μ
A
mS
μ
A
-1.0
0.8
90
2.0
260
250
500
2.0
250
mA
V
μ
A
μ
A
μ
A
°C
Driver Current = 250mA, Driver Sink
Compensation/Shutdown=0.45V
In UVLO
In Reverse Voltage (UC1835 Family Only)
2.8
300
10
10
140
Thermal Shutdown
Foldback Current Limit
Current Limit Levels at Sense Resistor Out
165
V
OUT
Sense = (0.99) V
REG
V
OUT
Sense = (0.5) V
REG
V
OUT
Sense = 0V
±
100
μ
A at Compensation/Shutdown,
V
OUT
Sense = (0.9) V
REG
V
OUT
Sense = (0.9) V
REG
Volts Below +V
IN
, T
J
= 25°C
V
OUT
Sense = (0.9) V
REG,
I
OUT
= I
A
, T
J
= 25°C
2.2
1.3
0.25
12
2.5
1.5
0.4
24
2.8
1.7
0.55
42
A
A
A
Current Limit Amp Tansconductance
mS
Limiting Voltage at Current Limit (-)
(Note 2)
Sense Resistor Value (Note 3)
80
100
140
mV
40
m
Note 2: This voltage has a positive temperature coefficient of approximately 3500ppm/°C.
Note 3: This resistance has a positive temperature coefficient of approximately 3500ppm/°C.
The total resistance from Pin 1 to Pin 8 will include an additional 60 to 100m
of package resistance.
ELECTRICAL CHARACTERISTICS:
Unless otherwise stated, specifications hold for T
A
= 0°C to + 70°C for the
UC3835/6, –25°C to + 85°C for the UC2835/6, and –55°C to +125°C for the
UC1835/6, +V
IN
= 6V, Driver Source= 0V, Driver Sink = 5V, T
A
= T
J
.
UC 1835
Typical configurations for a 2A,
Low Dropout 5V Regulator
UC1836
Typical Configuration for a 2A,
Low Dropout Adjustable Regulator
Note 4: Suggested Pass devices are TIP 32B. (Dropout Voltage
≤
0.75V) or, D45H, (Dropout Voltage
≤
0.5V), or equivalents.
APPLICATION AND OPERATION INFORMATION
3
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