LTC1735 Linear Technology, LTC1735 Datasheet - Page 6

• Manufacturer Part Number: LTC1735
• Description: High Efficiency Synchronous Step-Down Switching Regulator
• Manufacturer: Linear Technology

20mV/DIV
LTC1735
TYPICAL PERFOR A CE CHARACTERISTICS
6
V
5A/DIV
280
250
1V/DIV
5V/DIV
5A/DIV
300
290
270
260
RUN/SS
V
V
OUT
OUT
–40 –15
I
I
Oscillator Frequency
vs Temperature
L
L
C
OSC
V
V
R
V
(Burst Mode Operation)
FCB = 5V
V
V
Start-Up
IN
OUT
I
IN
OUT
LOAD
OUT(RIPPLE)
LOAD
= 15V
= 15V
= 47pF
= 1.6V
= 1.6V
= 0.16
= 1.5A
10
TEMPERATURE ( C)
35
5ms/DIV
5 s/DIV
60
85
W
110
FIGURE 1
1735 G19
U
1735 G27
1735 G22
135
10mV/DIV
50mV/DIV
5A/DIV
5A/DIV
–2
–1
–3
–4
–5
V
V
OUT
OUT
0
–40 –15
I
I
L
L
RUN/SS Pin Current
vs Temperature
V
V
EXT SYNC f = f
V
V
10mA TO
9A LOAD STEP
FCB = 5V
V
V
Load Step (Burst Mode Operation)
RUN/SS
IN
OUT
IN
OUT
OUT(RIPPLE)
I
LOAD
= 15V
= 15V
= 1.6V
= 1.6V
= 10mA
= 0V
10
TEMPERATURE ( C)
O
35
(Synchronized)
10 s/DIV
10 s/DIV
60
85
FIGURE 1
FIGURE 1
110
1735 G20
1735 G26
1735 G23
135
50mV/DIV
20mV/DIV
5A/DIV
5A/DIV
–0.2
–0.4
–0.6
–0.8
–1.0
V
V
OUT
OUT
0
–40 –15
I
I
L
L
FCB Pin Current vs Temperature
V
V
(Burst Mode Operation)
Load Step (Continuous Mode)
0A TO
9A LOAD STEP
FCB = 0V
V
V
FCB = 5V
V
V
FCB
IN
OUT
IN
OUT
OUT(RIPPLE)
I
LOAD
= 15V
= 15V
= 0.85V
= 1.6V
= 1.6V
= 50mA
10
TEMPERATURE ( C)
35
10 s/DIV
50 s/DIV
60
85
FIGURE 1
FIGURE 1
110
1735 G21
1735 G24
1735 G25
135