参数资料
型号: MAX1640EVKIT
厂商: Maxim Integrated Products
文件页数: 3/12页
文件大小: 0K
描述: EVAL KIT MAX1640, MAX1641
标准包装: 1
系列: *
MAX1640/MAX1641
Adjustable-Output, Switch-Mode
Current Source with Synchronous Rectifier
ELECTRICAL CHARACTERISTICS (continued)
(V IN = +12V, V OUT = 6V, Circuit of Figure 1, 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
PWM Maximum Duty Cycle
100
%
Input Low Voltage
Input High Voltage
Input Leakage Current
V IL
V IH
I IN
D0, D1
D0, D1
D0, D1
2.4
0.8
± 1
V
V
μA
ELECTRICAL CHARACTERISTICS
(V IN = +12V, V OUT = 6V, Circuit of Figure 1, T A = -40°C to +85°C, unless otherwise noted.)
PARAMETER
Input Voltage Range
Linear-Regulator Output
Voltage, V IN Referenced
Linear-Regulator Output
Voltage, Ground Referenced
Full-Scale Current-Sense
Threshold
Quarter-Scale Current-Sense
Threshold
SYMBOL
V IN
V LDOH
V LDOL
CONDITIONS
V IN = 5.5V to 26V,
I LOAD = 0 to 20mA
V IN = 5.5V to 26V,
I LOAD = 0 to 20mA
MAX1640
MAX1641
MAX1640
MAX1641
MIN
5.5
V IN -
5.5
4.5
141
146
34
33
TYP
MAX
26
V IN -
4.5
5.5
159
154
48
42
UNITS
V
V
V
mV
mV
Output Current Compliance
Quiescent V IN Supply Current
Output Current in Off Mode
V LDOL Undervoltage Lockout
V OUT = 2V to 24V (MAX1640)
D0 or D1 = high
D0 = D1 = low
4.0
0.4
4
1
4.4
%/V
mA
μA
V
Reference Voltage
Reference Load Regulation
V SET Input Current
FET Drive Output Resistance
Off-Time Range
V REF
I REF = 0 to 50μA
1.94
1.5
2.06
10
1
12
8
V
mV
μA
Ω
μs
Off-Time Accuracy
Pulse-Trickle Mode Duty-Cycle
Period
PWM Maximum Duty Cycle
R TOFF = 62k Ω
D0 = low, D1 = high, R TOFF = 50k Ω
1.5
25
100
2.5
42
μs
ms
%
Input Low Voltage
Input High Voltage
Input Leakage Current
V IL
V IH
I IN
D0, D1
D0, D1
D0, D1
2.4
0.8
± 1
V
V
μA
Note 2: This ratio is generated by a 1:8 clock divider and is not an error source for current calculations.
Maxim Integrated
3
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