LT1977EFE#TR Linear Technology, LT1977EFE#TR Datasheet - Page 4

• Manufacturer Part Number: LT1977EFE#TR
• Description: IC REG SW 1.5A HV STPDWN 16TSSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT1977EFE#TR

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.2 ~ 54 V
• Current - Output: 1.5A
• Frequency - Switching: 500kHz
• Voltage - Input: 3.3 ~ 60 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -

LT1977
TYPICAL PERFOR A CE CHARACTERISTICS
4
1.30
1.29
1.28
1.27
1.26
1.25
1.24
1.23
1.22
1.21
1.20
200
180
160
140
120
100
5.5
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
80
60
40
20
0
0
–50
–50
0
FB Voltage
SHDN Pin Current
Bias Sleep Current
T
J
= 25°C
–25
–25
10
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
SHDN VOLTAGE (V)
20
25
25
30
50
50
40
75
75
W
100
50
100
1977 G01
1977 G04
1977 G07
U
125
125
60
1.20
1.18
1.16
1.14
1.12
1.10
1.08
1.06
1.04
1.02
1.00
550
540
530
520
510
500
490
480
470
460
450
25
20
15
10
5
0
–50
–50
–50
Oscillator Frequency
Shutdown Supply Current
PGFB Threshold
–25
–25
–25
V
IN
0
0
0
TEMPERATURE (°C)
= 42V
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
25
V
50
50
50
V
IN
IN
= 12V
= 60V
75
75
75
100
100
100
1977 G02
1977 G05
1977 G08
125
125
125
1.10
1.40
1.35
1.30
1.25
1.20
0.15
1.05
1.00
250
200
150
100
200
180
160
140
120
100
50
80
60
40
20
0
0
–50
–50
–50
PG Sink Current
SHDN Threshold
Sleep Mode Supply Current
–25
–25
–25
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
V
V
BIAS
BIAS
25
25
25
= 0V
= 5V
50
50
50
75
75
75
100
100
100
1977 G09
1977 G03
1977 G06
1977fa
125
125
125