MAX848 データシートの表示（PDF） - Maxim Integrated
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MAX848 Datasheet PDF : 16 Pages
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1-Cell to 3-Cell, High-Power,
Low-Noise, Step-Up DC-DC Converters
ELECTRICAL CHARACTERISTICS (continued)
(VOUT = 3.6V, GND = PGND = CLK/SEL = ON1 = ON2 = AINSEL = AIN1 = AIN2 = FB = POKIN, POUT = OUT, TA = 0°C to +85°C,
unless otherwise noted.)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Operating Current in Low-Power
Mode (Note 6)
Current into OUT pin, CLK/SEL = GND
35
90
µA
Operating Current in Low-Noise
Mode (Note 6)
Current into OUT pin, CLK/SEL = OUT,
does not include switching losses
150
300
µA
DC-DC SWITCHES
POUT Leakage Current
LX Leakage Current
Switch On-Resistance
N-Channel Current Limit
ADC
Data Output Voltage Low
Data Output Voltage High
AIN1 Input Voltage Range
AIN2 Input Voltage Range
AIN1, AIN2 Input Current
Accuracy
POWER-GOOD
Internal Trip Level
External Trip Level
POK Low Voltage
POK High Leakage Current
POKIN Leakage Current
LOGIC AND CONTROL INPUTS
Input Low Voltage
Input High Voltage
Logic Input Current
Internal Oscillator Frequency
Oscillator Maximum Duty Cycle
External Clock Frequency Range
CLK/SEL Pulse Width
CLK/SEL Rise/Fall Time
VLX = 0V, V ON2 = VOUT = 5.5V
0.1
20
µA
VLX = V ON2 = VOUT = 5.5V
0.1
20
µA
N-channel
CLK/SEL = GND
CLK/SEL = OUT
0.3
0.6
0.13
0.25
Ω
P-channel
CLK/SEL = OUT
0.25
0.5
CLK/SEL = OUT
VCLK/SEL = 0V (Note 7)
MAX848
MAX849
MAX848
MAX849
600
800
1000
1100
1350 1600
mA
120
200
300
250
400
550
ISINK = 1mA
ISOURCE = 1mA
AINSEL = GND
AINSEL = OUT
fCLK = 400kHz, VAIN1 = VAIN2 = 2.5V
fCLK = 400kHz, 5ms conversion,
monotonic to 8 bits
VOUT - 0.4
0.625
0
1
0.4
1.875
2.5
2
±4
V
V
V
V
µA
% FSR
Rising VOUT, VPOKIN < 0.1V
Rising VPOKIN
ISINK = 1mA, VOUT = 3.6V or
ISINK = 20µA, VOUT = 1V
VOUT = VPOK = 5.5V
VPOKIN = 1.5V
2.95
1.225
3.10
V
1.275
V
0.4
V
0.01
1
µA
50
nA
1.2V < VOUT < 5.5V, ON1 and ON2 (Note 8)
VOUT = 2.7V, AINSEL and CLK/SEL
1.2V < VOUT < 5.5V, ON1 and ON2 (Note 8)
VOUT = 5.5V, AINSEL and CLK/SEL
ON1, ON2, AINSEL and CLK/SEL
0.8VOUT
0.8VOUT
0.2VOUT
V
0.2VOUT
V
1
µA
CLK/SEL = OUT
260
300
340
kHz
80
85
90
%
200
400
kHz
Not tested
200
ns
Not tested
100
ns
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