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参数资料
| 型号： | MAX844ISA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/10页 |
| 文件大小： | 0K |
| 描述： | IC BIAS GAASFET REG 8-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 充电泵，手机发射器 |
| 输入电压： | 2.5 V ~ 10 V |
| 输出数： | 1 |
| 输出电压： | -2V |
| 工作温度： | -25°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
Low-Noise, Regulated, -2V GaAsFET Bias
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
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
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.
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.
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.)
PARAMETER
Supply Voltage Range
SYMBOL
V IN
CONDITIONS
MIN
2.5
TYP
MAX
10
UNITS
V
Output Voltage
V OUT
MAX840, V FB = 0V
MAX843/MAX844,
V IN ≥ 2.5V,
I OUT = 0mA to 3mA
V IN ≥ 2.7V,
I OUT = 0mA to 4mA
V IN ≥ 2.5V,
I OUT = 0mA to 3mA
-2.1
-2.1
-2.05
-2.0
-2.0
-2.0
-1.9
-1.9
-1.95
V
Output Voltage Adjust Range
V OUT
V CTRL = 2V
V IN ≥ 2.7V,
I OUT = 0mA to 4mA
-2.05
-2.0
-0.5 to
(V IN - 0.6)
-1.95
V
FB Voltage
FB Leakage Current
CONT Leakage Current
Supply Current
V FB
I FB
I CONT
I Q
MAX840, no load
MAX840, V FB = -0.5V
MAX843/MAX844, V CONT = 0V
No load, V IN ≤ 3.6V
-0.516
-0.5
±1
±1
750
-0.484
±100
±100
1300
V
nA
nA
μA
MAX840/MAX843, V IN = 10V, SHDN = 0V
1
Shutdown Supply Current
I SHUT
MAX844, V IN = 10V, SHDN = 0V
MAX844, V IN ≤ 3.6V, SHDN = 0V
940
175
300
μA
V OUT Load Regulation
V OUT Ripple
V IN = 3.6V,
R L = ∞ or 500 ?
C4 = 10μF
MAX840, V FB = 0V
MAX843/MAX844,
V CTRL = 2V
3
2
1
8
8
mV/mA
mVp-p
Oscillator Frequency
F OSC
V IN = 3.6V,
T A = +25°C
MAX840/MAX843/
MAX844
MAX844, SHDN = 0V
80
14
100
20
120
26
kHz
Input High Voltage
Input Low Voltage
V IH
V IL
SHDN
SHDN
2.2
0.35
V
V
Input Current
Input Capacitance
I IN
C IN
SHDN
SHDN
-1
10
1
μA
pF
2
_______________________________________________________________________________________
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