参数资料
型号: MAX1802EHJ+
厂商: Maxim Integrated Products
文件页数: 5/28页
文件大小: 0K
描述: IC PWR SPLY STEP DOWN 32-TQFP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 360
应用: 控制器,数字式相机
输入电压: 2.5 V ~ 11 V
输出数: 5
输出电压: 1.25 V ~ 5.5 V
工作温度: 0°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 32-TQFP
供应商设备封装: 32-TQFP(5x5)
包装: 托盘
Digital Camera Step-Down
Power Supply
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V VDDM = 6V, V VDDC = 3V, PGNDM = PGND = GND, DCON1 = REF, V ONM = 3V, V ONC = V ON1 = V DCON2 =
V DCON3 = 0, T A = 0 ° C to +85 ° C , unless otherwise noted. Typical values are at T A = +25 ° C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
AUXILIARY DC-DC CONTROLLERS 1, 2, 3 (V ON1 = V CON _ = 3V)
INTERNAL CLOCK
OSC Clock Low Trip Level
OSC Clock High Trip Level
OSC falling edge
V DCON _ = 0.625V
V DCON _ = 1.25V to V VL
0.2
0.575
1.00
0.25
0.625
1.05
0.3
0.675
1.10
V
V
Maximum Duty Cycle
Adjustment Range
Maximum Duty Cycle
Default Maximum Duty Cycle
V DCON _ = 0.625V
V DCON _ = 1.25V to V VL
40
43
76
90
%
%
%
DCON_ Input Leakage Current
V DCON _ = 0V to 3V
0.01
1
μA
DCON_ Input Sleep-Mode
Threshold
V DCON _ rising, 50mV hysteresis
0.35
0.4
0.45
V
AUXILIARY ERROR AMPLIFIER
FB_ Regulation Voltage
Unity gain configuration, FB_ = COMP_
1.233
1.248
1.263
V
FB_ to COMP_
Transconductance
FB_ Input Leakage Current
G EA
Unity gain configuration, FB_ = COMP_,
-5μA < ILOAD < 5μA
V FB _ = 1.35V
70
100
5
160
100
μs
nA
AUXILIARY DRIVERS (DL1, DL2 , DL3)
DL_ Driver Resistance
DL_ Drive Current
Output high or low
Sourcing or sinking, V DL _ = V VDDC / 2
4
400
11
?
mA
AUXILIARY SOFT-START
Soft-Start Interval
AUXILIARY SHORT-CIRCUIT PROTECTION
Fault Interval
1024
1024
OSC
cycles
OSC
cycles
_______________________________________________________________________________________
5
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