LT1082IQ#TRPBF Linear Technology, LT1082IQ#TRPBF Datasheet - Page 5

• Manufacturer Part Number: LT1082IQ#TRPBF
• Description: IC SWTCHNG REG HI-V/EFF 1A 5-DD
• Manufacturer: Linear Technology
• Type: Step-Down (Buck), Step-Up (Boost), Inverting, Flyback, Forward Converterr

Specifications of LT1082IQ#TRPBF

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Current - Output: 1A
• Frequency - Switching: 60kHz
• Voltage - Input: 3 ~ 75 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: D²Pak, TO-263 (5 leads + tab)
• Power - Output: 20W
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -

TYPICAL PERFOR
800
700
600
500
400
300
200
100
200
160
120
25
24
23
22
21
20
19
18
17
16
15
80
40
0
0
–75 –50
–75 –50
Feedback Bias Current vs
Temperature
Isolated Mode Flyback
Reference Voltage
Supply Current vs Supply Voltage
(Shutdown Mode)
0
10
–25 0
–25 0
20
SUPPLY VOLTAGE (V)
TEMPERATURE ( C)
TEMPERATURE ( C)
V
C
30
V
25
25
= 50mV
C
R
R
R
FB
= 0V
FB
FB
50
40
50
= 10k
= 3k
= 6k
75
75
50
100
100
W
60
125
125
A
70
150 175
150 175
1082 G09
1082 G12
1082 G15
U
80
CE
750
725
700
675
650
625
600
575
550
525
500
C
70
65
60
55
50
45
100
–75 –50
–75 –50
90
80
70
60
50
40
30
20
10
* AVERAGE SUPPLY CURRENT
HARA TERISTICS
Reference Voltage and Switching
Frequency vs Temperature
0
Normal/Feedback Mode
Threshold on Feedback Pin
= I
I
I
Q
SW
FEEDBACK PIN VOLTAGE
FEEDBACK PIN CURRENT
0
Driver Current* vs Switch Current
Q
= QUIESCENT CURRENT, DC = DUTY CYCLE,
+ DC(2.9 + 10
= SWITCH CURRENT
(AT THRESHOLD)
(AT THRESHOLD)
0.2
–25 0
–25 0
0.4 0.6
C
TEMPERATURE ( C)
TEMPERATURE ( C)
SWITCH CURRENT (A)
FREQ
V
25
25
–2
REF
0.8
I
SW
50
50
1.0
+ 10
75
75
1.2
–5
100
I
100
SW
1.4
2
125
)
125
1.6
150 175
1082 G11
150 175
1082 G16
1.8 2.0
1082 G13
1.250
1.245
1.240
1.235
1.230
1.225
–24
–22
–20
–18
–16
–14
–12
–10
–8
–6
–4
**UNDER VERY LOW OUTPUT CURRENT CONDITIONS,
14
13
12
11
10
DUTY CYCLE FOR MOST CIRCUITS WILL APPROACH
10% OR LESS.
9
8
7
6
5
4
3
2
200
180
160
140
120
100
Supply Current vs Input Voltage**
–1
–2
–3
–4
–5
0
80
60
40
20
5
4
3
2
1
0
0
Line Regulation
0
Shutdown Mode Supply Current
0
10
T
J
10
10
= –55 C
20
T
T
20 30
J
J
20
INPUT VOLTAGE (V)
= 150 C
= 25 C
V
30
INPUT VOLTAGE (V)
C
PIN VOLTAGE (mV)
30
40
–55 C T
40
40
90% DUTY CYCLE
50% DUTY CYCLE
10% DUTY CYCLE
50
0% DUTY CYCLE
50
60
50
J
T
LT1082
J
60
70
= 150 C
125 C
60
sn1082 1082fas
80
70
70
1082 G10
90 100
1082 G17
1082 G14
5
80
80