LT1764AEQ-3.3#PBF Linear Technology, LT1764AEQ-3.3#PBF Datasheet - Page 8

• Manufacturer Part Number: LT1764AEQ-3.3#PBF
• Description: IC LDO LOW NOISE 3A 3.3V DDPAK-5
• Manufacturer: Linear Technology

Specifications of LT1764AEQ-3.3#PBF

• Regulator Topology: Positive Fixed
• Voltage - Output: 3.3V
• Voltage - Input: Up to 20V
• Voltage - Dropout (typical): 0.34V @ 3A
• Number Of Regulators: 1
• Current - Output: 3A
• Current - Limit (min): 3.1A
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: TO-263-5, D²Pak (5 leads + Tab), TO-263BA
• Primary Input Voltage: 20V
• Output Voltage Fixed: 3.3V
• Dropout Voltage Vdo: 340mV
• No. Of Pins: 5
• Output Current: 3A
• Operating Temperature Range: -40°C To +125°C
• Msl: MSL 1 - Unlimited
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TYPICAL PERFOR A CE CHARACTERISTICS
LT1764A Series
8
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
3.0
2.5
1.5
1.0
0.5
2.0
6
5
4
3
2
1
0
0
0
–50
–50
0
Current Limit
LT1764A Minimum Input Voltage
Reverse Output Current
V
V
V
V
V
OUT
OUT
OUT
OUT
OUT
2
–25
–25
INPUT/OUTPUT DIFFERENTIAL (V)
= 1.21V (LT1764A)
= 1.5V (LT1764A-1.5)
= 1.8V (LT1764A-1.8)
= 2.5V (LT1764A-2.5)
= 3.3V (LT1764A-3.3)
4
T
I
L
J
0
0
= 500mA
= 125°C
TEMPERATURE (°C)
6
TEMPERATURE (°C)
LT1764A-1.5/1.8/-2.5/-3.3
T
J
= 25°C
8
25
25
10
LT1764A
50
50
12
T
J
14
= –50°C
I
75
75
L
I
I
= 100mA
W
L
L
16
= 3A
= 1.5A
V
100
100
IN
1764 G33
18
1764 G27
= 0V
1764 G30
U
125
125
20
–10
–15
–20
–25
–30
80
70
60
50
40
30
20
10
–5
10
0
6
5
2
0
5
0
4
3
1
– 50
–50
10
Load Regulation
Current Limit
Ripple Rejection
I
V
L
∆I
V
V
(LT1764A-1.8/-2.5/-3.3)
IN
IN
IN
= 1.5A
L
– 25
–25
= V
= 1mA TO 3A
= 2.7V (LT1764A/LT1764A-1.5)
= V
+ 50mV
100
OUT(NOM)
OUT(NOM)
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
RMS
LT1764A-1.5
FREQUENCY (Hz)
+ 1V
1k
LT1764A-1.8
+ 1V
25
RIPPLE
25
LT1764A-2.5
50
50
10k
LT1764A-3.3
LT1764A
C
TANTALUM
OUT
C
TANTALUM +
75
75
OUT
CERAMIC
10 × 1µF
= 10µF
100k
V
V
= 100µF
IN
OUT
100
100
= 7V
1764 G28
= 0V
1764 G31
1764 G34
125
125
1M
0.01
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.1
65
50
75
70
60
55
0
1
–50 –25
10
0
Reverse Output Current
Ripple Rejection
Output Noise Spectral Density
LT1764A-3.3
LT1764A-3.3
LT1764A-2.5
C
I
LOAD
LT1764A-1.5
LT1764A-1.8
OUT
LT1764A
LT1764A
1
= 10µF
= 3A
2
100
OUTPUT VOLTAGE (V)
0
TEMPERATURE (°C)
3
FREQUENCY (Hz)
4
(LT1764A-1.5/1.8/-2.5/-3.3)
25
LT1764A-2.5
LT1764A-1.8
LT1764A-1.5
1k
V
5
OUT
I
V
+ 0.5V
AT f = 120Hz
L
50
IN
= 1.5A
INTO OUTPUT PIN
6
CURRENT FLOWS
= V
= V
P-P
ADJ
OUT(NOM)
7
75
10k
V
RIPPLE
(LT1764A)
OUT
T
8
V
J
100
IN
= 25°C
= V
1764 G32
1764 G35
1764afb
= 0V
1764 G29
+ 1V
9
FB
100k
125
10