sc250wltrt Semtech Corporation, sc250wltrt Datasheet - Page 14

• Manufacturer Part Number: sc250wltrt
• Description: Sc250 Step-down Dc-dc Converter With Bias Ldo For Rf Power Amplifiers
• Manufacturer: Semtech Corporation

© 2006 Semtech Corp.
POWER MANAGEMENT
Typical Characteristics (Cont.)
1100
1050
1000
1280
1260
1240
1220
1200
1180
1160
1140
1120
950
900
850
800
750
700
650
600
550
500
1.6
1.4
1.2
0.8
0.6
0.4
0.2
1
0
-40
0
1
Oscillator Frequency vs. V
Maximum Output Current, V
0.1
PMOS Current Limit vs. Temperature
-20
1.1
0.2
0
V
0.3
IN
=5.0V
1.2
20
0.4
V
IN
=3.5V
0.5
V
I
OUT
40
T
DAC
1.3
J
(°C)
(A)
(V)
0.6
60
0.7
1.4
DAC
V
IN
V
80
V
=4.0V
0.8
, V
OUT
IN
IN
=2.7V
=3.0V
IN
= 1.5V
0.9
V
= 3.6V
100
1.5
IN
=4.5V
1
120
1.6
1.1
14
Oscillator Frequency vs. Temperature, V
1700
1650
1600
1550
1500
1450
1400
1080
1060
1040
1020
1000
980
960
940
50
45
40
35
30
25
20
15
10
5
0
-40
-40
0
Passthrough Current Limit vs. Temperature
Dropout Voltage vs. Bypass Load Current
-20
-20
0.1
0
0
0.2
20
20
0.3
40
T
I
40
OUT
J
T
J
(°C)
(°C)
(A)
60
0.4
60
80
PRELIMINARY
0.5
80
www.semtech.com
100
100
SC250
0.6
IN
120
= 3.6V
120
0.7
140