Linear Technology LTC1736, Datasheet

Page: 6 / 28

6
LTC1736
TYPICAL PERFOR A CE CHARACTERISTICS
U W
Oscillator Frequency
vs Temperature
TEMPERATURE (
°
C)
–40 –15
250
FREQUENCY (kHz)
270
300
10 60 85
1736 G19
260
290
280
35
110
135
C
OSC
= 47pF
Dynamic VID Change,
Burst Mode Operation Defeated
V
OUT
100mV/DIV
I
L
5A/DIV
PGOOD
5V/DIV
1736 G20
Dynamic VID Change,
Burst Mode Operation Enabled
V
OUT
100mV/DIV
I
L
5A/DIV
PGOOD
5V/DIV
1736 G21
V
OUT(RIPPLE)
(Burst Mode Operation)
V
OUT
1V/DIV
V
RUN/SS
5V/DIV
I
L
5A/DIV
1736 G22
5ms/DIV V
IN
= 15V
V
OUT
= 1.6V
R
LOAD
= 0.16
Ω
V
OUT(RIPPLE)
(Synchronized)
V
OUT
10mV/DIV
I
L
5A/DIV
1736 G23
10
µ
s/DIV EXT SYNC (f = f
O
)
V
IN
= 15V
V
OUT
= 1.6V
V
OUT(RIPPLE)
(Burst Mode Operation)
V
OUT
20mV/DIV
1736 G24
50
µ
s/DIV FCB = 5V
V
IN
= 15V
V
OUT
= 1.6V
I
L
5A/DIV
Start-Up
Load Step
(Burst Mode Operation)
Load Step (Continuous Mode)
V
OUT
20mV/DIV
I
L
5A/DIV
1736 G25
5
µ
s/DIV
FCB = 5V
V
IN
= 15V
V
OUT
= 1.6V
V
OUT
50mV/DIV
I
L
5A/DIV
1736 G26
10
µ
s/DIV
10mA TO
11A LOAD STEP
FCB = 5V
V
IN
= 15V
V
OUT
= 1.6V
V
OUT
50mV/DIV
I
L
5A/DIV
1736 G27
10
µ
s/DIV
0A TO
11A LOAD STEP
FCB = 0V
V
IN
= 15V
V
OUT
= 1.6V
FCB = 0V
FCB = PGOOD
I
LOAD
= 10mA I
LOAD
= 50mA
I
LOAD
= 1.5A
20
µ
s/DIV 20
µ
s/DIV