MAX881REUB-T Maxim Integrated Products, MAX881REUB-T Datasheet - Page 5

• Manufacturer Part Number: MAX881REUB-T
• Description: Charge Pumps Bias Supply w/Power OK for GaAsFET PA
• Manufacturer: Maxim Integrated Products

Specifications of MAX881REUB-T

• Function: Inverting
• Output Voltage: - 4.9 V to - 0.5 V
• Output Current: 4 mA
• Maximum Operating Temperature: + 85 C
• Package / Case: uMAX-10
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT

Dual Mode is a trademark of Maxim Integrated Products.
Figure 1. Functional Diagram
PIN
10
1
2
3
4
5
6
7
8
9
C1
C2
_______________________________________________________________________________________
NEGOUT
NAME
SHDN
GND
POK
OUT
N.C.
C1+
C1-
FB
IN
NEGOUT
C1+
C1-
0.5V
Positive Terminal for C1
Negative Terminal for C1
Negative Output Voltage (unregulated)
Active-Low, Open-Drain Power-OK Output. Goes low when OUT reaches 92.5% of its set
value.
Active-Low, Logic-Level Shutdown Input. Connect to IN for normal operation. Do not leave this
pin unconnected.
Dual-Mode™ Feedback Input. When FB is connected to GND, the output is preset to -2V. To
select other voltages, connect FB to an external resistor-divider (Figure 4). Do not leave this pin
unconnected.
Regulated Negative Output Voltage
Ground
No Connection. Not internally connected.
Positive Power-Supply Input
CHARGE PUMP
0.4625V
Low-Noise Bias Supply in µMAX
with Power-OK for GaAsFET PA
SHDN
GND
FUNCTION
MAX881R
Pin Description
OUT
POK
FB
IN
C3
C4
5