sc171mltr Semtech Corporation, sc171mltr Datasheet - Page 9

• Manufacturer Part Number: sc171mltr
• Description: 1a Ecospeedtm Synchronous Step-down Regulator With Optional Ultrasonic Power Save
• Manufacturer: Semtech Corporation

Typical Characteristics
© 2010 Semtech Corporation
2.7
2.6
2.5
2.4
2.3
2.2
2.1
2.0
1.9
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
-0.0100
-0.0120
-0.0140
-0.0160
-0.0180
-0.0200
I
VIN
-50
-40
OCP Valley Threshold vs Temperature
Input Current In Shutdown vs Temperature
I
BST
-40
-25
-15
Leakage Current vs Temperature
V
Blue: V
Black: V
-15
IN
=5V
10
0
V
V
Temperature (°C)
IN
BST
Temperature (°C)
10
LX
LX
=5V
Temperature (°C)
=V
=V
=GND
25
35
IN
IN
35
V
DD
60
50
=3.0V
60
V
DD
75
85
=5.0V
85
100
110
110 135
125
135
Start up waveform
Load Transient Test
Load Transient Test
Forced Continuous Conduction Mode, L
Forced Continuous Conduction Mode, L
0.5V/Div, Channel 4: 0.5A/Div, Time: 0.5ms/Div
2:5V/Div,Channel 4: 0.5A/Div, Time:20µs/Div)
2:5V/Div,Channel 4: 0.5A/Div, Time:20µs/Div)
C
C
OUT
OUT
=2x22µF, Channel 1: 50mV/Div, Channel
=2x22µF, Channel 1: 50mV/Div, Channel
(
V
IN
(
(
=5V, V
V
V
IN
IN
=5V, V
=5V, V
OUT
=1.2V, I
OUT
OUT
=1.2V, I
=1.2V, I
OUT
=1A, Channel 1:
OUT
OUT
OUT
OUT
= 0A to 1A,
= 1A to 0A,
=1µH,
=1µH,
)
SC171
9