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LT1764EFE-3.3#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
7
LT1764 Series
1764fb
TYPICAL PERFOR A CE CHARACTERISTICS
UW
SHDN Pin Input Current ADJ Pin Bias Current Current Limit
TEMPERATURE (°C)
–50
0
SHDN PIN THRESHOLD (V)
0.1
0.3
0.4
0.5
1.0
0.7
0
50
75
1764 G22
0.2
0.8
0.9
0.6
–25
25
100
125
I
L
= 1mA
TEMPERATURE (°C)
–50
0
SHDN PIN THRESHOLD (V)
0.1
0.3
0.4
0.5
1.0
0.7
0
50
75
1764 G23
0.2
0.8
0.9
0.6
–25
25
100
125
I
L
= 3A
I
L
= 1mA
SHDN PIN VOLTAGE (V)
0
SHDN PIN INPUT CURRENT (µA)
6
8
10
16
1764 G24
4
2
5
7
9
3
1
0
4
8
12
218
6
10
14
20
TEMPERATURE (°C)
–50
0
SHDN PIN INPUT CURRENT (µA)
1
3
4
5
10
7
0
50
75
1764 G25
2
8
9
6
–25
25
100
125
V
SHDN
= 20V
TEMPERATURE (°C)
–50
ADJ PIN BIAS CURRENT (µA)
25
1756 G26
–25 0 50
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
75 100 125
INPUT/OUTPUT DIFFERENTIAL (V)
0
CURRENT LIMIT (A)
2
4
6
1
3
5
4 8 12 16
1764 G27
2020 6 10 14 18
T
J
= –50°C
T
J
= 125°C
T
J
= 25°C
LT1764-3.3 GND Pin Current LT1764 GND Pin Current GND Pin Current vs I
LOAD
INPUT VOLTAGE (V)
0
GND PIN CURRENT (mA)
120
160
200
8
1764 G19
80
40
0
2
4
6
19
3
5
7
10
R
L
= 1.1Ω
I
L
= 3A*
R
L
= 2.2Ω
I
L
= 1.5A*
T
J
= 25°C
V
SHDN
= V
IN
*FOR V
OUT
= 3.3V
R
L
= 4.71Ω
I
L
= 0.7A*
INPUT VOLTAGE (V)
0
GND PIN CURRENT (mA)
90
120
150
8
1764 G20
60
30
0
2
4
6
19
3
5
7
10
R
L
= 0.4Ω
I
L
= 3A*
R
L
= 0.81Ω
I
L
= 1.5A*
T
J
= 25°C
V
SHDN
= V
IN
*FOR V
OUT
= 1.21V
R
L
= 1.73Ω
I
L
= 0.7A*
OUTPUT CURRENT (A)
0
GND PIN CURRENT (mA)
60
80
100
1.5
2.5
1764 G21
40
20
0
0.5 1.0 2.0
120
140
160
3.0
V
IN
= V
OUT(NOM)
+ 1V
SHDN Pin Threshold
(Off-to-On)
SHDN Pin Input Current
SHDN Pin Threshold
(On-to-Off)
8
LT1764 Series
1764fb
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Ripple Rejection
Ripple Rejection LT1764 Minimum Input Voltage
FREQUENCY (Hz)
20
RIPPLE REJECTION (dB)
30
50
70
80
10 1k 10k 1M
1764 G31
10
100
100k
60
40
0
C
OUT
= 100µF
TANTALUM +
10 × 1µF
CERAMIC
C
OUT
= 10µF
TANTALUM
I
L
= 1.5A
V
IN
= V
OUT(NOM)
+ 1V
+ 50mV
RMS
RIPPLE
TEMPERATURE (°C)
–50 –25
50
RIPPLE REJECTION (dB)
60
75
0
50
75
1764 G32
55
70
65
25
100
125
I
L
= 1.5A
V
IN
= V
OUT(NOM)
+ 1V
+ 0.5V
P-P
RIPPLE
AT f = 120Hz
TEMPERATURE (°C)
–50
MINIMUM INPUT VOLTAGE (V)
2.0
2.5
3.0
25 75
1764 G33
1.5
1.0
–25 0
50 100 125
0.5
0
I
L
= 3A
I
L
= 1.5A
I
L
= 100mA
I
L
= 500mA
Current Limit Reverse Output Current
Reverse Output Current
TEMPERATURE (°C)
–50
CURRENT LIMIT (A)
4
5
6
25 75
1764 G28
3
2
–25 0
50 100 125
1
0
V
IN
= 7V
V
OUT
= 0V
OUTPUT VOLTAGE (V)
0
REVERSE OUTPUT CURRENT (mA)
3.0
4.0
5.0
8
1764 G29
2.0
1.0
2.5
3.5
4.5
1.5
0.5
0
2
4
6
19
3
5
7
10
T
J
= 25°C
V
IN
= 0V
CURRENT FLOWS
INTO OUTPUT PIN
V
OUT
= V
ADJ
(LT1764)
V
OUT
= V
FB
(LT1764-1.8/-2.5/-3.3)
LT1764
LT1764-1.8
LT1764-2.5
LT1764-3.3
TEMPERATURE (°C)
–50
0
REVERSE OUTPUT CURRENT (mA)
0.1
0.3
0.4
0.5
1.0
0.7
0
50
75
1764 G30
0.2
0.8
0.9
0.6
–25
25
100
125
V
IN
= 0V
V
OUT
= 1.21V (LT1764)
V
OUT
= 1.8V (LT1764-1.8)
V
OUT
= 2.5V (LT1764-2.5)
V
OUT
= 3.3V (LT1764-3.3)
LT1764-1.8/-2.5/-3.3
LT1764
9
LT1764 Series
1764fb
LT1764-3.3 10Hz to 100kHz
Output Noise
LT1764-3.3 Transient Response
TEMPERATURE (°C)
–50
LOAD REGULATION (mV)
25
1764 G34
–25 0 50
10
5
0
–5
–10
–15
–20
–25
–30
75 100 125
LT1764
LT1764-3.3
LT1764-2.5
LT1764-1.8
∆I
L
= 1mA TO 3A
V
IN
= 2.7V (LT1764)
V
IN
= V
OUT(NOM)
+ 1V
(LT1764-1.8/-2.5/-3.3)
FREQUENCY (Hz)
10
0.01
OUTPUT NOISE SPECTRAL DENSITY (µV/√Hz)
0.1
1
100 1k 10k 100k
1764 G35
LT1764-3.3 LT1764-2.5
LT1764-1.8
LT1764
C
OUT
= 10µF
I
LOAD
= 3A
LOAD CURRENT (A)
10
OUTPUT NOISE (µV
RMS
)
15
25
35
40
0.0001 0.01 0.1 10
1764 G36
5
0.001
1
30
20
0
LT1764-3.3
LT1764-2.5
LT1764-1.8
LT1764
C
OUT
= 10µF
V
OUT
100µV/
DIV
C
OUT
= 10µF 1ms/DIV 1764 G37
I
L
= 3A
TIME (µs)
0
OUTPUT VOLTAGE
DEVIATION (V)
LOAD CURRENT (A)
–0.1
0.1
–0.2
0
0.2
16
1764 G38
1.00
0.50
0.75
0.25
0
462
8
12 14 18
10
20
V
IN
= 4.3V
C
IN
= 3.3µF TANTALUM
C
OUT
= 10µF TANTALUM
LT1764-3.3 Transient Response
TIME (µs)
0
OUTPUT VOLTAGE
DEVIATION (V)
LOAD CURRENT (A)
–0.1
0.1
–0.2
0
0.2
16
1764 G39
2
3
1
0
462
8
12 14 18
10
20
V
IN
= 4.3V
C
IN
= 33µF
C
OUT
= 100µF TANTALUM
+ 10 × 1µF CERAMIC
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Load Regulation
Output Noise Spectral Density
RMS Output Noise vs Load Current
(10Hz to 100kHz)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LT1764EFE-3.3#PBF

Mfr. #:
Buy LT1764EFE-3.3#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
LDO Voltage Regulators 3A, Fast Tran Resp, L N, LDO Regs
Lifecycle:
New from this manufacturer.
Delivery:
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