MAX840ISA+ Maxim Integrated Products, MAX840ISA+ Datasheet - Page 6
![IC BIAS GAASFET REG 8-SOIC](/photos/1/39/13902/8-soic_21-0042b_sml.jpg)
MAX840ISA+
Manufacturer Part Number
MAX840ISA+
Description
IC BIAS GAASFET REG 8-SOIC
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX844ISA.pdf
(10 pages)
Specifications of MAX840ISA+
Applications
Charge Pump, Cellular Telephone Transmitter
Voltage - Input
2.5 ~ 10 V
Number Of Outputs
1
Voltage - Output
-2V, -0.5 ~ -9.4 V
Operating Temperature
-25°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Function
Inverting
Output Voltage
- 2 V or - 0.5 V to - 9.4 V
Output Current
4 mA
Supply Current
750 uA
Maximum Operating Temperature
+ 85 C
Input Voltage
2.5 V to 10 V
Maximum Power Dissipation
471 mW
Minimum Operating Temperature
- 25 C
Mounting Style
SMD/SMT
Switching Frequency
100 KHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Low-Noise, Regulated, -2V GaAsFET Bias
(Circuit of Figure 2a, V
6
NOTE: dBµV = 20 LOG ______
____________________________Typical Operating Characteristics (continued)
_______________________________________________________________________________________
V
IN
= 3.6V, V
LOAD-TRANSIENT RESPONSE
IN
V
1µV
OUT
OUT
= 3.6V, T
= -2V
50
40
30
20
10
0
5ms/div
0.1
A
V
I
= +25°C, unless otherwise noted.)
OUT
IN
= 3.6V,
= 4mA
0V
0V
V
1
IN
(C1 = C2 = C3 = 0.22 F, C4 = 4.7 F)
MAX843/MAX844 NOISE SPECTRUM
= 3.6V, V
START-UP FROM SHUTDOWN
V
20mV/div
0.01mA
4mA
OUT
OUT
FREQUENCY (kHz)
= -2V, I
I
OUT
500 s/div
OUT
10
= 4mA
V
100
OUT
= -2V, I
LINE-TRANSIENT RESPONSE
V
1V/div
V
2V/div
OUT
OUT
SHDN
= 4mA, AC COUPLED
1000
5ms/div
V
10mV/div
3.3V
2.7V
OUT
V
IN