參數(shù)資料
型號(hào)： MAX853
廠(chǎng)商： Maxim Integrated Products, Inc.
英文描述： Charge-Pump Power Supplies for GaAsFET Bias(可調(diào),砷化鎵場(chǎng)效應(yīng)管偏置電壓源)
中文描述： 低噪聲、穩(wěn)壓型、負(fù)輸出電荷泵，用于GaAsFET偏置電源
文件頁(yè)數(shù)： 2/8頁(yè)
文件大?。?/td> 137K
代理商： MAX853
M
Low-Noise, Regulated, Negative
Charge-Pump Power Supplies for 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
to GND (Note 1)........................................V
NEGOUT
to 0.3V
SHDN or OSC (pin 4) Voltage 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
(+5V
≤
V
IN
≤
+10V, GND = 0V, V
OUT
= -4.1V, R
L
=
∞
, T
A
= T
MIN
to T
MAX
, unless otherwise noted. A 100kHz, 50% duty cycle square
wave between GND and V
IN
is applied to OSC on the MAX852.)
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 to GND is 50mA.
Note 2:
The supply voltage can drop to 4.5V, but the output may no longer sink 5mA at -4.1V.
Note 3:
The MAX852 will operate with a 50kHz to 250kHz square wave of 40% to 60% duty cycle. For best performance, use an
80kHz to 120kHz square wave with 50% duty cycle.
Operating Temperature Ranges
MAX85_ISA......................................................-25°C to +85°C
MAX85_ESA.....................................................-40°C to +85°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec) .............................+300°C
Pin 4
Pin 4
Pin 4
MAX850–MAX852, V
FB
= 0V,
R
L
=
∞
or 820
, Figure 2a
Pin 4
MAX850/MAX851/MAX853, T
A
= +25°C
MAX853
MAX850–MAX852
MAX853, V
CTRL
= 4.1V,
R
L
=
∞
or 820
, Figure 2c
MAX850/MAX853, V
IN
= 10V, SHDN = 0V
MAX850–MAX852, V
FB
= 0V,
R
L
=
∞
or 820
, Figure 2a
MAX850–MAX852, no load, Figure 2b
MAX853, V
CTRL
= 4.1V,
R
L
=
∞
or 820
, Figure 2c
MAX852, OSC low
MAX851, SHDN = 2V
CONDITIONS
pF
10
C
IN
Input Capacitance
μA
±1
I
IN
Input Current
V
0.5
V
IL
Input Low Voltage
V
2.0
V
IH
Input High Voltage
kHz
80
100
120
f
OSC
Oscillator Frequency (Note 3)
mVp-p
1
V
OUT
Ripple
2
mV/mA
3
8
V
OUT
Load Regulation
4
8
μA
1
I
SHUT
Shutdown Supply Current
2
5
-4.3
-4.1 -3.9
V
5
10
V
IN
Supply Voltage Range (Note 2)
0.002
1
mA
2.0
3.0
I
Q
Supply Current
V
-1.32
-1.28
-1.24
V
FBset
Set Voltage
V
-0.5 to -(V
IN
- 1)
Output Voltage Range
V
-4.2
-4.0
V
OUT
Output Voltage
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
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