MAX888ECJ(1999) 查看數據表（PDF） - Maxim Integrated
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MAX888ECJ Datasheet PDF : 20 Pages
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Wireless and Satellite Handset
Power-Management ICs
ELECTRICAL CHARACTERISTICS (continued)
(VBATT = VIN0 = VIN1 = +5.5V, GND = PGND = DGND, V OFF = VSYNC = 2.8V, VIN2 = VIN3 = VIN4 = VIN5 = +3.8V, VOUT4 = +5.5V,
TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
Output Load Regulation
Line Regulation
Maximum Duty Cycle
LX Leakage Current
Internal Switch On-Resistance
RON
PFM to PWM Threshold
Internal Switch Current Limit
ILIMIT
OSCILLATOR FREQUENCY (OUT0, OUT4)
Oscillator Frequency Accuracy
fOSC
CONDITIONS
IOUT0 = 0.1mA to 500mA
3V < VIN0 < 12V
VLX = 12V
VLX = 12V
VIN0 = 3.8V
IOUT0
Table 4
TA = 0°C to +85°C
TA = -40°C to +85°C
SYNC Range
LDO REGULATOR 1 (IN1, OUT1)
Input Voltage Range
Output Accuracy
Nominal Output Adjustment
Range
Dropout Voltage
Output Load Regulation
Line Regulation
Current Limit
LDO REGULATOR 2 (IN2, OUT2)
Input Voltage Range
Output Accuracy
Nominal Output Adjustment
Range
VIN1
VOUT1
VIN2
VOUT2
IOUT1 = 0.1mA to 100mA
MAX886
MAX888
IOUT1 = 1mA
IOUT1 = 100mA
IOUT1 = 0.1mA to 100mA
3V < VIN1 < 12V, 0h code
IOUT2 = 0.1mA to 200mA
MAX886
MAX888
MIN TYP MAX UNITS
-1.5
%
-0.3
0
0.3
%
100
%
0.1
10
µA
0.4
1
Ω
63
98
180
mA
0.6
0.9
1.2
A
-20
20
%
-23
23
0.8 ·
fOSC
fOSC
1.2 ·
fOSC
kHz
2.7
-3
2.70
1.25
1
90
-0.01
-0.1
0
100 250
12
V
3
%
4.95
V
3.5
mV
200
0.01 %/mA
0.1
%/V
mA
2.7
-3
2.175
1.527
5.5
V
3
%
3.30
V
3.027
Output Ready Threshold
Dropout Voltage
Output Load Regulation
Line Regulation
Current Limit
LDO REGULATOR 3 (IN3, OUT3)
Input Voltage Range
Output Accuracy
VRDY2
VIN3
VOUT2 = 3.3V (MAX886),
VOUT2 = 1.527V (MAX888)
IOUT2 = 1mA
IOUT2 = 200mA
IOUT2 = 0.1mA to 200mA
2.7V < VIN2 < 3.8V, 0h code
IOUT3 = 0.1mA to 20mA
-7.5
-5
1
90
-0.005
-0.3
200 500
-3
% of
VOUT2
200
0.002
0.3
mV
%/mA
%/V
mA
2.7
5.5
V
-3
3
%
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