ltc3717-1 Linear Technology Corporation, ltc3717-1 Datasheet - Page 5

• Manufacturer Part Number: ltc3717-1
• Description: Wide Operating Range, No Rsense Step-down Controller For Ddr/qdr Memory Termination
• Manufacturer: Linear Technology Corporation

TYPICAL PERFOR A CE CHARACTERISTICS
100
10k
3.5
160
140
120
100
5.0
4.5
4.0
3.0
1k
10
80
60
40
20
0
–50
2.0
1
On-Time vs I
RUN/SS Latchoff Thresholds
vs Temperature
Maximum Current Sense Threshold
vs RUN/SS Voltage, V
2.2
–25
2.4
0
LATCHOFF THRESHOLD
TEMPERATURE ( C)
I
ON
2.6
ON
LATCHOFF ENABLE
RUN/SS (V)
CURRENT ( A)
25
Current
10
2.8
50
3.0 3.2
RNG
75
V
W
= 1V
VON
100
37171 G09
3.4
37171 G12
37171 G15
= 0V
U
100
125
3.6
–0.1
–0.3
–0.4
–0.5
–0.2
180
160
140
120
100
3.5
2.5
2.0
4.0
3.0
80
60
40
20
0
0
–50
–50
0
INTV
Maximum Current Sense Threshold
vs Temperature, V
Undervoltage Lockout Threshold
vs Temperature
–30 –10 10
–25
CC
10
INTV
Load Regulation
0
TEMPERATURE ( C)
CC
TEMPERATURE (C)
LOAD CURRENT (mA)
20
25
30
50
RNG
50
30
70
= 1V
75
90 110
40
100
37171 G10
37171 G13
37171 G16
125
130
50
1.50
1.40
1.30
1.20
1.10
1.00
0.90
0.80
0.70
300
250
200
150
100
–2
–1
50
1
3
2
0
0
–50 –25
0.50
–50
RUN/SS Latchoff Thresholds
vs Temperature
Maximum Current Sense Threshold
vs V
Error Amplifier gm
vs Temperature
–30 –10 10
RNG
0.75
Voltage
PULL-DOWN CURRENT
0
TEMPERATURE ( C)
TEMPERATURE ( C)
1.00
PULL-UP CURRENT
LTC3717-1
25
V
30
RNG
1.25
50
50
(V)
1.50
70
75
sn37171 37171fs
90 110
1.75
100
37171 G11
37171 G14
37171 G17
5
125
2.00
130