參數(shù)資料
型號(hào): MAX1982
廠商: Maxim Integrated Products, Inc.
英文描述: Low-Voltage, Low-Dropout Linear Regulators with External Bias Supply
中文描述: 低電壓、低壓差線性穩(wěn)壓器,外部偏置電源
文件頁(yè)數(shù): 3/12頁(yè)
文件大?。?/td> 383K
代理商: MAX1982
M
Low-Voltage, Low-Dropout Linear Regulators
with External Bias Supply
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 3, V
IN
= 1.8V, I
LOAD
= 1mA, C
LOAD
= 10μF,
T
A
= 0
°
C to +85
°
C
, unless otherwise noted. Typical values are at
T
A
= +25
°
C.) (Note 1)
PARAMETER
SYM B O L
CONDITIONS
LOGIC AND I/O
SHDN
Input High Voltage
V
IH
SHDN
Input Low Voltage
V
IL
SHDN
Input Current
PGOOD Output Low Voltage
PGOOD sinking 1mA
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 3, V
IN
= 1.8V, I
LOAD
= 1mA, C
LOAD
= 10μF,
T
A
= -40
°
C to +85
°
C
, unless otherwise noted.) (Note 1)
PARAMETER
SYM B O L
Input Voltage
V
IN
BIAS Voltage
V
BIAS
V
OUT
Voltage Range
V
OUT
MAX1983
BIAS Input Undervoltage Lockout
Shutdown Supply Current
I
IN
1.25V < V
IN
< 5.5V
Quiescent BIAS Current
I
Q
4.5V < V
BIAS
< 5.5V
Shutdown BIAS Current
I
SHDN
4.5V < V
BIAS
< 5.5V
MAX1982: V
IN
= open, V
OUT
= 1.20V
V
OUT
Input Bias Current
MAX1983: V
IN
= open, 0.8V < V
OUT
< 2.0V
REGULATOR CHARACTERISTICS
MIN
TYP
MAX
UNITS
2.4
V
V
0.8
+1
0.1
-1
μA
V
PGOOD Output
High Leakage Current
0 < V
PGOOD
< V
IN
-1
+1
μA
DYNAMICS
Positive Load Step
Negative Load Step
t
RISE
t
FALL
I
LOAD
= 1mA to full load, C
LOAD
= 10μF
I
LOAD
= full load to 1mA, C
LOAD
= 10μF
10Hz < f < 10kHz, I
LOAD
= 300mA,
C
LOAD
= 10μF
10
50
μs
μs
Ripple Rejection at V
IN
-60
dB
Startup Response Time
t
ON
I
LOAD
= 300mA, C
LOAD
= 10μF, 0% to 90%
of nominal output voltage
100
μs
Startup Overshoot
I
LOAD
= 300mA, C
LOAD
= 10μF
Falling edge, 3mV under trip threshold
Rising edge within 5% of regulation level
0.5
10
%
μs
ms
PGOOD Propagation Delay
t
PD
1
4
CONDITIONS
MIN
1.25
4.5
0.8
3.8
MAX
5.5
5.5
2.0
4.2
5
250
5
30
2
UNITS
V
V
V
V
μA
μA
μA
μA
Line Regulation
V
OUT
/
V
IN
I
LOAD
= 10mA, 1.5V < V
IN
< 5.5V
-0.15
+0.15
%/V
MAX1982 1.20V
Output Voltage Accuracy
V
OUT
I
OUT
= 1mA to 300mA,
V
OUT
+ 0.5V < V
IN
< 5.5V
-3
+3
%
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