MAX1802 데이터 시트보기 (PDF) - Maxim Integrated
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MAX1802 Datasheet PDF : 28 Pages
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Digital Camera Step-Down
Power Supply
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, VVDDM = 6V, VVDDC = 3V, PGNDM = PGND = GND, DCON1 = REF, VONM = 3V, VONC = VON1 = VDCON2 =
VDCON3 = 0, TA = 0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
MAIN SOFT-START
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Soft-Start Interval
OSC falling edge
1024
OSC
cycles
MAIN DRIVERS (DHM, DLM)
Output Low Voltage
ISINK = 10mA
0.11
V
Output High Voltage
ISOURCE = 10mA
VVDDM -
0.11
V
Driver Resistance
Drive Current
CORE DC-DC CONVERTER (VONC = 3V)
Core Output Voltage Adjust
Range
VOUT
IDHM = 10mA, IDLM = 10mA
Sourcing or sinking,
VDHM or VVL = VVDDM / 2
Core Idle Mode Threshold
Core Current-Sense Amplifier
Transresistance
RCSC
VOSC = 0.625V
Core Slope Compensation Gain
AVSWC
CORE ERROR AMPLIFIER (VONC = 3V)
FBC Regulation Voltage
Unity gain configuration, FBC = COMPC
FBC to COMPC
Transconductance
FBC Input Leakage Current
COMPC Minimum Output
Voltage
GEA
Unity gain configuration, FBC = COMPC,
-5µA < ILOAD < 5µA
VFBC = 1.35V
VFBC = 1.35V, COMPC open
COMPC Maximum Output
Voltage
VCOMPM(MAX) VFBC = 1.15V, COMPC open
CORE SOFT-START (VONC = 3V)
Soft-Start Interval
CORE POWER SWITCHES (VONC = 3V)
LXC Leakage Current
Switch On-Resistance
P-Channel Current Limit
RDSN
RDSP
N-Channel Turn-Off Current
VLXC = 0, 5.5V
N-channel, ILXC = 0.75A
P-channel, ILXC = 0.75A
VOSC = 0.625V
4
11
Ω
400
mA
1.25
5.5
V
70
190 320
mA
0.7
1.0
1.3
V/A
0.16 0.20 0.24
V/V
1.233 1.248 1.263
V
70
100 160
µS
5
100
nA
0.3
V
2.00 2.14 2.27
V
1024
OSC
cycles
0.01
20
µA
150 350
mΩ
180 400
0.75
A
18
100 180
mA
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