MAX1958 데이터 시트보기 (PDF) - Maxim Integrated
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MAX1958 Datasheet PDF : 24 Pages
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W-CDMA/N-CDMA Cellular Phone HBT PA
Management ICs
(TA = +25°C, unless otherwise noted.)
DROPOUT VOLTAGE ACROSS P-CHANNEL
MOSFET vs. LOAD CURRENT
300
250
200
150
100
50
0
0 100 200 300 400 500 600 700 800
LOAD CURRENT (mA)
Typical Operating Characteristics (continued)
SUPPLY CURRENT vs. INPUT VOLTAGE
SKIP MODE
250
230
PWM = AGND
VOUT = 1.5V
210 MAX1958
190
170
150
130
110
90
70
50
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
SUPPLY CURRENT vs. INPUT VOLTAGE
FORCED PWM
6
VOUT = 0.75V
5
PWM = IN
MAX1958
4
3
2
1
0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE (V)
HEAVY-LOAD SWITCHING WAVEFORMS
(ILOAD = 600mA)
MAX1958/59 toc07
LX
5V/div
MEDIUM-LOAD SWITCHING WAVEFORMS
(ILOAD = 300mA)
MAX1958/59 toc08
LX
5V/div
ILX
100mA/div
ILX
100mA/div
VOUT
AC-COUPLED
10mV/div
VOUT
AC-COUPLED
10mV/div
400ns/div
400ns/div
LIGHT-LOAD SWITCHING WAVEFORMS
(PWM = IN, ILOAD = 30mA)
MAX1958/59 toc09
LX
5V/div
LIGHT-LOAD SWITCHING WAVEFORMS
(PWM = AGND, ILOAD = 30mA)
MAX1958/59 toc10
LX
5V/div
ILX
100mA/div
ILX
100mA/div
VOUT
AC-COUPLED
10mV/div
VOUT
AC-COUPLED
10mV/div
400ns/div
400ms/div
10 ______________________________________________________________________________________
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