LT1976EFE Linear Technology, LT1976EFE Datasheet - Page 6

• Manufacturer Part Number: LT1976EFE
• Description: IC REG SW STEP DWN 1.5A 16-TSSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT1976EFE

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.2 ~ 54 V
• Current - Output: 1.5A
• Frequency - Switching: 200kHz
• 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: -

LT1976/LT1976B
TYPICAL PERFOR A CE CHARACTERISTICS
6
1.08
1.06
1.20
1.18
1.16
1.14
1.12
1.10
1.04
1.02
1.00
150
125
100
50
45
40
35
30
25
20
15
75
10
50
25
5
0
0
–50
PGFB Threshold
0
0
Soft-Start Current Threshold
vs FB Voltage
LT1976 Supply Current
vs Input Voltage
T
J
–25
= 25°C
0.2
10
0
TEMPERATURE (°C)
INPUT VOLTAGE (V)
0.4
20
FB VOLTAGE (V)
25
50
0.6
30
75
0.8
40
SOFT-START
DEFEATED
100
V
W
OUT
T
A
1.0
50
125
= 25°C
= 3.3V
1976 G08
1976 G11
1976 F05
U
150
1.2
60
250
200
150
100
250
200
150
100
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.5
3.0
50
50
0
0
–50
0
0
Oscillator Frequency
vs FB Voltage
PG Sink Current
Minimum Input Voltage
T
3.3V START
5V START
J
–25
= 25°C
200
0.2
400
0
LOAD CURRENT (mA)
5V RUNNING
TEMPERATURE (°C)
3.3V RUNNING
0.4
FB VOLTAGE (V)
600
25
800
50
0.6
1000
75
0.8
1200
100
1.0
1400
125
1976 G19
1976 G12
1976 G08
150
1600
1.2
500
450
400
350
300
250
200
150
100
200
180
160
140
120
100
2.0
3.5
3.0
2.5
1.5
50
80
60
40
20
0
0
–50
0.5
5
Switch Peak Current Limit
Switch On Voltage (V
LT1976 Burst Mode Threshold
vs Input Voltage
V
L = 33μH
C
OUT
OUT
–25
7
= 3.3V
= 100μF
0.7
9
–0
11
TEMPERATURE (°C)
LOAD CURRENT (A)
INPUT VOLTAGE (V)
T
T
J
J
25
= 125°C
= 25°C
0.9
13
T
50
15
J
= –50°C
1.1
17 19
75
CESAT
100
1.3
)
21
125
23
1976 G10
1976 G13
1975 G20
1976bfg
150
1.5
25