LT1777 Linear Technology, LT1777 Datasheet - Page 5

• Manufacturer Part Number: LT1777
• Description: Low Noise Step-Down Switching Regulator
• Manufacturer: Linear Technology

TYPICAL PERFOR A CE CHARACTERISTICS
–100
–150
106
104
102
100
–50
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
100
98
96
94
50
–50
0
–50
1.0
Switching Frequency
vs Temperature
Output dI/dt Sense Voltage
vs Temperature
Feedback Amplifier Output
Current vs FB Pin Voltage
–25
–25
1.1
0
0
TEMPERATURE ( C)
TEMPERATURE ( C)
FB PIN VOLTAGE (V)
1.2
25
25
W
50
50
1.3
U
75
75
1.4
100
100
25 C
125 C
–55 C
1777 G09
1777 G07
1777 G11
125
125
1.5
2.25
2.00
1.75
1.50
1.25
1.00
0.75
750
700
650
600
550
500
450
400
2.2
2.0
1.8
1.6
1.4
1.2
1.0
0.8
–50
–50
–50
Minimum Synchronization
Voltage vs Temperature
V
Clamp Voltage vs Temperature
Error Amplifier Transconductance
vs Temperature
C
–25
–25
–25
Pin Switching Threshold,
0
0
0
TEMPERATURE ( C)
TEMPERATURE ( C)
TEMPERATURE ( C)
25
25
25
50
50
50
THRESHOLD
SWITCHING
VOLTAGE
CLAMP
75
75
75
100
100
100
1777 G12
1777 G08
1777 G10
125
125
125
LT1777
5