LGGQ View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LGGQ' PDF : 24 Pages View PDF
Typical Performance Characteristics
LT8614
RT Programmed Switching
Frequency
250
225
200
175
150
125
100
75
50
25
0
0.2 0.6 1 1.4 1.8 2.2 2.6 3
SWITCHING FREQUENCY (kHz)
8614 G27
VIN UVLO
3.6
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
–55 –25
5 35 65 95
TEMPERATURE (°C)
125 155
8614 G29
Bias Pin Current
6.0
VBIAS = 5V
5.5
VOUT = 5V
ILOAD = 1A
fSW = 700kHz
5.0
4.5
4.0
3.5
3.0
2.5
5
10 15 20 25 30 35 40 45
INPUT VOLTAGE (V)
8614 G30
Bias Pin Current
14
VBIAS = 5V
12
VOUT = 5V
VIN = 12V
ILOAD = 1A
10
8
6
4
2
0
0.2 0.6 1 1.4 1.8 2.2 2.6 3
SWITCHING FREQUENCY (MHz)
8614 G31
Switching Waveforms
Switching Waveforms, Full
Frequency Continuous Operation
VSW
5V/DIV
IL
500mA/DIV
VOUT
5mV/DIV
500ns/DIV
FRONT PAGE APPLICATION
12VIN TO 5VOUT AT 1A
8614 G32
Transient Response; Load Current
Stepped from 1A to 2A
Switching Waveforms, Burst
Mode Operation
VSW
5V/DIV
IL
500mA/DIV
VOUT
10mV/DIV
5µs/DIV
FRONT PAGE APPLICATION
12VIN TO 5VOUT AT 10mA
VSYNC = 0V
8614 G33
Transient Response; Load Current
Stepped from 100mA (Burst Mode
Operation) to 1.1A
IL
500mA/DIV
VSW
5V/DIV
ILOAD
1A/DIV
VOUT
100mV/DIV
ILOAD
1A/DIV
VOUT
200mV/DIV
200ns/DIV
FRONT PAGE APPLICATION
36VIN TO 5VOUT AT 1A
8614 G34
50µs/DIV
FRONT PAGE APPLICATION
1A TO 2A TRANSIENT
12VIN, 5VOUT
COUT = 47µF
8614 G35
50µs/DIV
FRONT PAGE APPLICATION
100mA (Burst Mode OPERATION) TO
1.1A TRANSIENT
12VIN, 5VOUT
COUT = 47µF
8614 G36
For more information www.linear.com/LT8614
8614fb
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