MAX1958 查看數據表（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
ELECTRICAL CHARACTERISTICS (STEP-DOWN CONVERTER)
(VINP = VIN = VVCC = V SHDN1 = 3.6V, VPWM = VPGND = VAGND = V SHDN2 = V SHDN3 = 0, VADJ = 1.25V, COMP = IN- = IN+ =
AOUT = TOUT = unconnected, CREF = 0.1µF, TA = -40°C to +85°C, VOUT for MAX1958 = 2.2V, VOUT for MAX1959 = 1.7V, unless
otherwise noted.) (Note 5)
PARAMETER
Supply Voltage Range
Undervoltage Lockout Threshold
Quiescent Current
Quiescent Current in Dropout
Shutdown Supply Current
ERROR AMPLIFIER
OUT Voltage Accuracy
(MAX1958)
OUT Voltage Accuracy
(MAX1959)
OUT Input Current (MAX1958)
OUT Input Current (MAX1959)
ADJ Input Current (MAX1958)
ADJ Input Current (MAX1959)
Positive COMP Output Current
(MAX1958)
Positive COMP Output Current
(MAX1959)
Negative COMP Output Current
(MAX1958)
Negative COMP Output Current
(MAX1959)
REFERENCE
REF Output Voltage
REF Load Regulation
Undervoltage Lockout Threshold
Supply Rejection
CONDITIONS
Rising or falling, hysteresis is 1%
PWM = AGND (MAX1958)
PWM = AGND (MAX1959)
MAX1958
MAX1959
V SHDN1 = 0
VADJ = 1.932V, ILOAD = 0 to 600mA, VPWM = VIN = 3.8V
VADJ = 0.426V, ILOAD = 0 to 30mA, VPWM = 0
VADJ = 0.426V, ILOAD = 0 to 30mA, VPWM = VIN = 4.2V
VADJ = 2.2V, ILOAD = 0 to 600mA, VPWM = VIN = 4V
VADJ = 0.9V, ILOAD = 0 to 30mA, VPWM = 0
VADJ = 0.9V, ILOAD = 0 to 30mA, VPWM = VIN = 4.2V
VOUT = 0.75V
VOUT = 3.4V
VOUT = 1V
VOUT = 3.6V
VADJ = 0.426V to 1.932V
VADJ = 0.9V to 2.2V
VADJ = 1V, VOUT = 1.5V, VCOMP = 1.25V
VADJ = 1V, VOUT =1V, VCOMP = 1.25V
VADJ = 1V, VOUT = 2V, VCOMP = 1.25V
VADJ = 1V, VOUT = 1.4V, VCOMP =1.25V
10µA < IREF < 100µA
Rising or falling, 1% hysteresis
2.6V < VIN < 5.5V
MIN
2.6
2.20
3.36
0.739
0.739
3.570
0.98
0.98
2
11
2.5
10.0
-150
-150
-27.0
-27.0
6.5
6.5
1.226
0.85
TYP
MAX
5.5
2.55
300
450
550
600
6
UNITS
V
V
µA
µA
µA
3.44
0.761
V
0.761
3.625
1.02
V
1.02
6
µA
25
6.5
µA
23.0
+150
nA
+150
nA
-6.5
µA
-6.5
µA
27.0
µA
27.0
µA
1.275
6.25
1.10
1.7
V
mV
V
mV/V
6 _______________________________________________________________________________________
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