SC196A Datasheet, PDF (12/17 Pages) Semtech Corporation – 1.5A Synchronous Buck Converter with Integrated Power Devices

POWER MANAGEMENT
Typical Characteristics (Cont.)
V_OUT vs. V_IN
1.84
1.83
1.82
1.81
VOUT=1.8V PSAVE
IOUT=50mA
VOUT=1.8V PWM
IOUT=500mA
1.80
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
VIN (V)
V_OUT vs. Temperature
V_OUT=1.8V, PWM
1.8090
1.8085
1.8080
1.8075
1.8070
1.8065
1.8060
1.8055
1.8050
1.8045
1.8040
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TA(^°C)
Quiescent Current vs. Input Voltage
6 ^{PWM Mode}
5.5
5
TA = 85 °C
TA = -40 °C
TA = 25 °C
4.5
4
3.5
3
2.5
3
3.5
4
4.5
5
5.5
6
VIN (V)
SC196A
PRELIMINARY
1.8025
1.8020
1.8015
1.8010
1.8005
1.8000
1.7995
1.7990
1.7985
1.7980
1.7975
0
V_OUT vs. I_OUT, V_OUT=1.8V, PWM
0.2
0.4
0.6
0.8
IOUT (A)
1
1.2
Quiescent Current vs. Input Voltage
22 ^{PSAVE Mode}
21
20
TA = 85 °C
19
18
17
TA = 25 °C
16
15
14
TA = 40 °C
13
12
2.5
3
3.5
4
4.5
5
5.5
6
VIN (V)
P-Channel R_DSON vs. Input Voltage
0.40
0.35
0.30
0.25
0.20
TA = 85 °C
TA = 25 °C
TA = -40 °C
0.15
0.10
2.7
3.2
3.7
4.2
4.7
5.2
VIN (V)
 2006 Semtech Corp.
12
www.semtech.com