lt1913 Linear Technology Corporation, lt1913 Datasheet - Page 6

• Manufacturer Part Number: lt1913
• Description: 25v, 3.5a, 2.4mhz Step-down Switching Regulator
• Manufacturer: Linear Technology Corporation

LT1913
TYPICAL PERFOR A CE CHARACTERISTICS
6
6.5
6.0
5.5
5.0
4.5
4.0
Minimum Input Voltage
1
V
T
L = 4.7μH
f = 600kHz
OUT
A
= 25 °C
= 5V
10
10mV/DIV
LOAD CURRENT (mA)
0.2A/DIV
5V/DIV
V
V
OUT
SW
I
L
100
Switching Waveforms;
Discontinuous Operation
V
V
I
LOAD
IN
OUT
= 12V
= 3.3V
= 110mA
1000
W
1913 G21
U
1μs/DIV
10000
2.50
2.00
1.50
1.00
0.50
0
–50
V
C
1913 G25
Voltages
–25
CURRENT LIMIT CLAMP
SWITCHING THRESHOLD
0
TEMPERATURE (°C)
25
50
75
10mV/DIV
0.5A/DIV
100
5V/DIV
V
V
OUT
SW
I
125
L
1913 G22
T
Switching Waveforms;
Continuous Operation
V
V
I
LOAD
A
IN
OUT
150
= 25°C unless otherwise noted.
= 12V
= 3.3V
= 1A
95
90
85
80
75
–50
1μs/DIV
Power Good Threshold
–25
0
TEMPERATURE (°C)
25
1913 G26
50
75
100
125
1913 G23
1913f
150