LT1185CQ#TR Linear Technology, LT1185CQ#TR Datasheet - Page 11

• Manufacturer Part Number: LT1185CQ#TR
• Description: IC REG LDO ADJUSTABLE 3A DDPAK-5
• Manufacturer: Linear Technology

Specifications of LT1185CQ#TR

• Regulator Topology: Negative Adjustable
• Voltage - Output: -2.5 ~ -25 V
• Voltage - Input: -4.2 ~ -35 V
• Voltage - Dropout (typical): 0.67V @ 3A
• Number Of Regulators: 1
• Current - Output: 3A
• Current - Limit (min): Adjustable
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: TO-263-5, D²Pak (5 leads + Tab), TO-263BA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

TYPICAL APPLICATIO S
V
–
+
IN
+
2µF
TANT
V
IN
GND
LT1185
*DIODE CONNECTION INDICATES A FLYBACK
SWITCHING TOPOLOGY, BUT FORWARD
CONVERTERS MAY ALSO BE USED
PRIMARY
REF
LT1185 • TA03a
Auxiliary + 12V Low Dropout Regulator for Switching Supply
2N3906
U
V
R3
15k
OUT
FB
Q1
R4
5.36k
*
*
R1
2.37k
R2
2.61k
+
+
Foldback Current Limiting
+
2µF
TANT
V
IN
REF
V
R
+
OUT
–
LIM
LT1185
CONTROL
GND
5V
V
OUT
FB
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
R1
2.37k
R2
9.76k
+
LT1185 • TA04
12V
REGULATED
AUXILIARY
5V
MAIN
OUTPUT
I
SHORT-CIRCUIT
I
FULL LOAD
I
OUT
= 15k
R3
= 15k
R3
+
LT1185
10.8k
R4
LT1185 • TA03b
11
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