LT1085CM-3.3#PBF Linear Technology, LT1085CM-3.3#PBF Datasheet - Page 8

• Manufacturer Part Number: LT1085CM-3.3#PBF
• Description: IC LDO REG FIXED 3.3V 3A DDPAK-3
• Manufacturer: Linear Technology

Specifications of LT1085CM-3.3#PBF

• Regulator Topology: Positive Fixed
• Voltage - Output: 3.3V
• Voltage - Input: Up to 25V
• Voltage - Dropout (typical): 1.3V @ 3A
• Number Of Regulators: 1
• Current - Output: 3A
• Current - Limit (min): 3.2A
• Operating Temperature: 0°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: TO-263-2, D⊃2Pak (2 leads + Tab), TO-263AB
• Primary Input Voltage: 20V
• Output Voltage Fixed: 3.3V
• Dropout Voltage Vdo: 1.3V
• No. Of Pins: 3
• Output Current: 3A
• Operating Temperature Range: 0°C To +125°C
• Msl: MSL 1 - Unlimited
• Rohs Compliant: Yes
• Voltage Regulator Type: Linear
• Topology: LDO
• Regulator Output Type: Fixed
• Polarity Type: Positive
• Number Of Outputs: Single
• Input Voltage (min): 4.3V
• Input Voltage (max): 25V
• Output Voltage: 3.3V
• Package Type: DDPAK
• Power Dissipation: 30W
• Load Regulation: 0.1%
• Line Regulation: 0.015%
• Output Voltage Accuracy: ±1%
• Operating Temp Range: 0C to 150C
• Operating Temperature Classification: Commercial
• Dropout Voltage@current (max): 1.5@3A
• Dropout Voltage@current (typ): 1.3@3A
• Pin Count: 3 +Tab
• Mounting: Surface Mount
• Quiescent Current (max): 10mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LT1083/LT1084/LT1085
TYPICAL PERFORMANCE CHARACTERISTICS
8
100
–100
–150
90
80
70
60
50
40
30
20
10
–0.2
–0.4
150
100
–50
0
0.6
0.4
0.2
50
14
13
12
10
LT1085
Ripple Rejection
0
8
6
4
2
0
0
0
0
C
C
I
LT1083
Load Transient Response
LT1083
Line Transient Response
OUT
ADJ
ADJ
(V
= 3A
= 200μF AT FREQUENCIES < 60Hz
= 25μF AT FREQUENCIES > 60Hz
IN
C
V
ADJ
RIPPLE
100
– V
OUT
= 0
FREQUENCY (Hz)
C
C
≤ 3V
) ≥ V
IN
OUT
C
= 1μF
ADJ
TIME (μs)
TIME (μs)
P-P
= 10μF TANTALUM
V
I
C
C
DROPOUT
1k
IN
OUT
IN
OUT
100
= 0
50
= 0.2A
= 1μF TANTALUM
= 10V
= 10μF TANTALUM
(V
V
V
PRELOAD=100mA
IN
OUT
IN
=13V
V
≤ 0.5V
– V
10k
C
=10V
RIPPLE
ADJ
C
1083/4/5 ADJ G19
OUT
ADJ
1083/4/5 ADJ G22
1083/4/5 ADJ G25
= 1μF
P-P
) ≥ 3V
= 1μF
100k
200
100
100
–0.2
–0.4
–0.6
90
80
70
60
50
40
30
20
10
–20
–40
–60
0.6
0.4
0.2
0
60
40
20
14
13
12
0
6
4
2
0
0
LT1085
Ripple Rejection vs Current
0
0
0
LT1084
Load Transient Response
LT1084
Line Transient Response
f
V
f
V
V
C
C
R
R
RIPPLE
RIPPLE
OUT
ADJ
OUT
= 120Hz
= 20kHz
0.5
C
= 25μF
= 5V
= 25μF
ADJ
≤ 3V
≤ 0.5V
OUTPUT CURRENT (A)
C
C
= 0
IN
OUT
1.0
P-P
= 1μF
P-P
C
C
= 10μF TANTALUM
ADJ
ADJ
TIME (μs)
TIME (μs)
V
I
C
C
IN
1.5
OUT
IN
OUT
= 1μF
= 0
100
50
= 0.2A
= 1μF TANTALUM
= 10V
= 10μF TANTALUM
V
V
PRELOAD=100mA
2.0
OUT
IN
=13V
=10V
C
1083/4/5 ADJ G20
ADJ
2.5
1083/4/5 ADJ G23
1083/4/5 ADJ G26
= 1μF
3.0
100
200
* AS LIMITED BY MAXIMUM JUNCTION TEMPERATURE
–0.1
–0.2
–0.3
–20
–40
–60
50
40
30
20
10
0.3
0.2
0.1
60
40
20
14
13
12
0
0
3
2
1
0
0
50
LT1085
Maximum Power Dissipation*
0
LT1085
Load Transient Response
LT1085
Line Transient Response
0
60 70 80 90 100 110 120 130 140 150
C
ADJ
CASE TEMPERATURE (°C)
C
C
= 0
IN
OUT
= 1μF
LT1085MK
C
= 10μF TANTALUM
ADJ
LT1085CK
TIME (μs)
TIME (μs)
V
I
C
C
IN
OUT
IN
OUT
= 0
100
50
= 0.2A
= 1μF TANTALUM
= 10V
= 10μF TANTALUM
LT1085CT
V
V
PRELOAD=100mA
OUT
IN
=13V
=10V
C
C
ADJ
ADJ
1083/4/5 ADJ G24
1083/4/5 ADJ G27
LT1083/4/5 ADJ G21
= 1μF
= 1μF
108345fg
100
200