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SC250 Datasheet(PDF) 15 Page - Semtech Corporation

Part # SC250
Description  Step-Down DC-DC Converter with Bias LDO for RF Power Amplifi ers
PDF  18 Pages
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Manufacturer  SEMTECH [Semtech Corporation]
Direct Link  http://www.semtech.com
Logo SEMTECH - Semtech Corporation

SC250 Datasheet(HTML) 15 Page - Semtech Corporation

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© 2006 Semtech Corp.
www.semtech.com
SC250
PRELIMINARY
POWER MANAGEMENT
V
DAC Step Response (100% duty)
V
DAC Step Response
V
DAC Step Response (Pass-through)
Typical Characteristics (Cont.)
Time (40μs/div)
Condition V
IN=3.6V, Load=15Ω, VDAC=0.7 to 1.7V
V
OUT (1V/div)
V
DAC (1V/div)
V
LX (2V/div)
V
OUT (1V/div)
V
DAC (500mV/div)
V
LX (2V/div)
Time (40μs/div)
Condition V
IN=4.2V, Load=15Ω, VDAC=0.5 to 1.1V
Time (40μs/div)
Condition V
IN=3V, Load=15Ω, VDAC=0.7 to 1V
V
OUT (1V/div)
V
DAC (500mV/div)
V
LX (2V/div)
Enable Transient
V
OUT (1V/div)
V
LX (2V/div)
V
EN (2V/div)
Time (40μs/div)
Condition V
IN=3.6V, Load=15Ω, VDAC=0.7V
0
50
100
150
200
250
300
350
400
450
-45
5
55
105
155
TJ (°C)
PASS
PMOS
NMOS
R
DSON vs. Temperature, VIN = 3.6V
0
50
100
150
200
250
300
350
400
2.5
3.0
3.5
4.0
4.5
5.0
5.5
VIN(V)
PMOS
NMOS
PASS
R
DSON vs. VIN



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