MAX1958 Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Lista de partido
MAX1958 Datasheet PDF : 24 Pages
| |||
W-CDMA/N-CDMA Cellular Phone HBT PA
Management ICs
ABSOLUTE MAXIMUM RATINGS
IN, INP, OUT, ADJ, SHDN1, SHDN2,
SHDN3, PWM, VCC to PGND ...................................-0.3V to +6V
AGND to PGND .....................................................-0.3V to +0.3V
COMP, REF to AGND ....................................-0.3 to (VIN + 0.3V)
IN+, IN-, AOUT, TOUT to AGND ................-0.3 to (VVCC + 0.3V)
LX Current (Note 1).............................................................±1.6A
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (TA = +70°C)
20-Pin Thin QFN 5mm x 5mm
(derate 20.8mW/°C above +70°C) .............................1670mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: LX has internal clamp diodes to PGND and INP. Applications that forward bias these diodes should take care not to exceed
the IC’s package power dissipation limits.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
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 = 0°C to +85°C, VOUT for MAX1958 = 2.2V, VOUT for MAX1959 = 1.7V, unless otherwise
noted. Typical values are at TA = +25°C.)
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)
CONDITIONS
Rising or falling, hysteresis is 1%
MAX1958, PWM = AGND
MAX1959, PWM = AGND
VPWM = VIN
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
MIN
2.6
2.20
3.38
0.739
0.739
3.58
0.985
0.985
2
11
2.5
10
-150
-150
-27
TYP
2.35
190
280
3
295
330
0.1
3.40
0.750
0.750
3.60
1.00
1.00
4
17
4.0
16
+1
+1
-14
MAX
5.5
2.55
300
450
550
600
6
3.42
0.761
0.761
3.62
1.015
1.015
6
25
6.5
23
+150
+150
-7
UNITS
V
V
µA
mA
µA
µA
V
V
µA
µA
nA
nA
µA
Positive COMP Output Current
(MAX1959)
VADJ = 1V, VOUT = 1V, VCOMP = 1.25V
-27
-14
-7
µA
2 _______________________________________________________________________________________
Share Link: 