參數(shù)資料
型號： MAX843ISA
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： Low-Noise, Regulated, -2V GaAsFET Bias
中文描述： SWITCHED CAPACITOR REGULATOR, 100 kHz SWITCHING FREQ-MAX, PDSO8
封裝： SOP-8
文件頁數(shù)： 2/10頁
文件大小： 161K
代理商： MAX843ISA
M
Low-Noise, Regulated, -2V GaAsFET Bias
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
IN
to GND ..................................-0.3V to 10.5V
V
NEGOUT
to GND...................................................-10.5V to 0.3V
V
IN
to V
NEGOUT
.........................................................-0.3V to 21V
V
OUT
to GND (Note 1).......................................V
NEGOUT
to 0.3V
V
SHDN
to GND ............................................-0.3V to (V
IN
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
SO (derate 5.88mW/°C above +70°C).........................471mW
ELECTRICAL CHARACTERISTICS
(Figures 2a and 2c, 2.5V
≤
V
IN
≤
10V, V
OUT
= -2V, GND = 0V, R
L
=
∞
, SHDN = V
IN
, T
A
= T
MIN
to T
MAX
, unless otherwise noted.
Typical values are measured at V
IN
= 3.6V and T
A
= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1:
The output may be shorted to NEGOUT or GND if the package power dissipation is not exceeded. Typical short-circuit
current from 4V to GND is 40mA.
Operating Temperature Ranges
MAX84_I_ _A ...................................................-25°C to +85°C
MAX84_E_ _A ..................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
C4 = 10μF
V
IN
= 3.6V,
R
L
=
∞
or 500
MAX844, V
IN
≤
3.6V, SHDN = 0V
MAX844, V
IN
= 10V, SHDN = 0V
MAX840/MAX843, V
IN
= 10V, SHDN = 0V
MAX843/MAX844, V
CONT
= 0V
No load, V
IN
≤
3.6V
MAX843/MAX844,
V
CTRL
= 2V
MAX840, V
FB
= 0V
MAX840, V
FB
= -0.5V
MAX840, no load
CONDITIONS
mVp-p
1
V
OUT
Ripple
mV/mA
2
8
V
OUT
Load Regulation
3
8
μA
175
300
I
SHUT
Shutdown Supply Current
940
1
nA
μA
±1
750
±100
1300
I
CONT
I
Q
CONT Leakage Current
Supply Current
nA
±1
±100
I
FB
FB Leakage Current
V
-0.516
-0.5
-0.484
V
FB
FB Voltage
-2.1
-2.0
-1.9
V
2.5
10
V
IN
Supply Voltage Range
-0.5 to
(V
IN
- 0.6)
V
OUT
Output Voltage Adjust Range
V
-2.05
-2.0
-1.95
V
OUT
Output Voltage
-2.1
-2.0
-1.9
-2.05
-2.0
-1.95
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
80
100
120
Oscillator Frequency
F
OSC
V
IN
= 3.6V,
T
A
= +25°C
14
2.2
20
26
kHz
Input High Voltage
Input Low Voltage
Input Current
Input Capacitance
V
IH
V
IL
I
IN
C
IN
SHDN
SHDN
SHDN
SHDN
V
V
V
IN
≥
2.7V,
I
OUT
= 0mA to 4mA
V
IN
≥
2.5V,
I
OUT
= 0mA to 3mA
V
IN
≥
2.5V,
I
OUT
= 0mA to 3mA
V
IN
≥
2.7V,
I
OUT
= 0mA to 4mA
V
MAX840, V
FB
= 0V
MAX843/MAX844,
V
CTRL
= 2V
0.35
1
-1
μA
pF
10
MAX840/MAX843/
MAX844
MAX844, SHDN = 0V
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