MAX881 Maxim, MAX881 Datasheet - Page 2

• Manufacturer Part Number: MAX881
• Description: Low-Noise Bias Supply in MAX with Power-OK for GaAsFET PA
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
IN to GND .................................................................-0.3V to +6V
SHDN to GND...........................................................-0.3V to +6V
POK to GND ...........................................................-0.3V to +12V
C1+ to GND .................................................-0.3V to (V
C1-, NEGOUT, OUT, FB to GND ....................-6V to (V
Continuous Power Dissipation (T
Low-Noise Bias Supply in µMAX
with Power-OK for GaAsFET PA
Note 1: The output may be shorted to NEGOUT or GND if the package power dissipation is not exceeded. Typical short-circuit
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
(Circuit of Figure 3, V
T
2
Note 2: Specifications to -40°C are guaranteed by design, not production tested.
Supply Voltage Range
Preset Output Voltage
Adjustable Output Voltage
Range
FB Voltage
FB Input Current
Supply Current
Shutdown Supply Current
Output Load Regulation
Output Ripple
Oscillator Frequency
POK Threshold
POK Output Level
POK Off Leakage Current
SHDN Input High Voltage
SHDN Input Low Voltage
SHDN Input Current
SHDN Input Capacitance
Start-Up Time
A
10-Pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW
= +25°C.) (Note 2)
_______________________________________________________________________________________
current is 35mA.
PARAMETER
IN
= +3.6V, FB = GND, R
A
= +70°C)
SYMBOL
t
I
I
V
V
START
f
SHDN
SHUT
V
C
V
OSC
V
V
OUT
OUT
I
FB
Q
IN
IH
IN
IL
L
V
V
V
I
V
SHDN = GND
V
I
FB = OUT
V
V
V
V
Connected to IN or GND
V
POK goes low
OUT
OUT
= ∞, SHDN = IN, T
IN
IN
IN
FB
IN
IN
IN
IN
IN
POK
≥ 2.7V, I
≥ 2.7V, I
≥ 2.5V, I
≥ 2.5V,
≥ 2.5V, sinking 1mA
= 5.5V
= 2.5V
= 3V, R
= -0.5V
= 0 to 4mA
= 4mA, circuit of Figure 3b
IN
IN
= 11V
+ 0.3V)
+ 0.3V)
L
OUT
OUT
OUT
= 500Ω, V
CONDITIONS
= 0 to 4mA
= 0 to 4mA
= 0 to 4mA
A
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +165°C
Lead Temperature (soldering, 10sec) .............................+300°C
= -40°C to +85°C, unless otherwise noted. Typical values are at
T
T
T
SHDN
A
A
A
= +25°C
= 0°C to +85°C
= -40°C to +85°C
= 0 to V
IN
,
-(V
-0.515
-0.525
-0.535
MIN
-2.1
2.5
2.2
80
90
IN
- 0.6)
TYP
0.05
92.5
-2.0
-0.5
500
100
-10
10
2
1
-0.485
-0.475
-0.465
MAX
-100
0.35
-1.9
-0.5
950
120
100
5.5
±1
95
1
6
1
1
mV/mA
UNITS
mVp-p
V
% of
kHz
mV
ms
nA
µA
µA
µA
µA
pF
OUT
V
V
V
V
V
V