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Maxim > Solutions > Cellular Handsets

GaAsFET Bias Supplies

DATA SHEETS
Display Title/Parts Key Advantages
QV  PDF 60mA, SOT23 Inverting Charge Pump with Shutdown
MAX1697

EMI-Friendly Ultra-Small Charge Pump
QV  PDF SOT23, Switched-Capacitor Voltage Inverters with Shutdown
MAX1719, MAX1720, MAX1721

Smallest, High-Efficiency Bias for Small LCD/GaAsFET PA Bias: Small Cap Size, No Inductors and Low Supply Current
QV  PDF Low-Noise Bias Supply in µMAX with Power OK for GaAsFET PA
MAX881R

1mVP-P Output Voltage Ripple
QV  PDF Switched-Capacitor Voltage Inverters
MAX870, MAX871

Compact, Inductorless, Low-Profile Inverter Fits 0.025 Sq. Inch , Biases GaAsFET PA
QV  PDF Low-Noise, Dual-Output, Regulated Charge Pump for GaAsFET, LCD, and VCO Supplies
MAX768

Low Output Ripple and Synchronizable Switching Frequency
QV  PDF Switched-Capacitor Voltage Inverters
MAX828, MAX829

Inductorless Power Supply for Pager LCD
QV  PDF Low-Noise, Regulated, -2V GaAsFET Bias
MAX840, MAX843, MAX844

Operates with Small Capacitors, as Low as 0.22 µF
QV  PDF Low-Noise, Regulated, Negative Charge Pump Power Supplies for GaAsFET Bias
MAX850, MAX851, MAX852, MAX853

1mVP-P Output Voltage Ripple (MAX853)



Key Specifications:  Charge Pumps
Part Number Topology VIN
(V)
VIN
(V)
ICC
(mA)
Unadj. VOUT
(V)
Adj. VOUT
(V)
Adj. VOUT
(V)
IOUT
(A)
Oper. Freq.
(kHz)
Features Oper. Temp.
(°C)
Package/Pins Smallest Available Pckg.
(mm2)
min max max min max typ max w/pins
MAX828 
Inverter
Unregulated
1.5 5.5 0.09 -VIN - - 0.025 12 -
-40 to +85
0 to +70
SOT/5
9
MAX829 
Inverter
Unregulated
1.5 5.5 0.26 -VIN - - 0.025 35 -
-40 to +85
0 to +70
SOT/5
9
MAX1697 
Inverter
Unregulated
1.25 5.5 0.3 -VIN - - 0.06 250 Shutdown -40 to +85
SOT/6
9
MAX1719 
Inverter
Unregulated
1.5 5.5 0.65 -VIN - - 0.025 125 Shutdown -40 to +85
SOT/6
9
MAX1720 
Inverter
Unregulated
1.5 5.5 0.09 -VIN - - 0.025 12 Shutdown -40 to +85
SOT/6
9
MAX1721 
Inverter
Unregulated
1.5 5.5 0.65 -VIN - - 0.025 125 Shutdown -40 to +85
SOT/6
9
MAX840 
Inverter
Regulated
2.5 10 1.3 -2 -VIN-0.6 -0.5 0.01 100 Shutdown
-40 to +85
-20 to +85
SOIC(N)/8
30.9
MAX843 
Inverter
Regulated
2.5 10 1.3 -2 -VIN-0.6 -0.5 0.01 100 Shutdown
-40 to +85
-20 to +85
SOIC(N)/8
30.9
MAX844  Regulated 2.5 10 1.3 -2 -VIN-0.6 -0.5 0.01 100 Shutdown
-40 to +85
-20 to +85
SOIC(N)/8
30.9
MAX850 
Inverter
Regulated
4.5 10 3 -4.1 -VIN-0.6 -0.5 0.005 100 Shutdown
-40 to +85
-20 to +85
SOIC(N)/8
30.9
MAX851 
Inverter
Regulated
4.5 10 3 -4.1 -VIN-0.6 -0.5 0.005 100 Shutdown
-40 to +85
-20 to +85
SOIC(N)/8
30.9
MAX853 
Inverter
Regulated
4.5 10 3 -9 -VIN-0.6 -0.5 0.005 100 Shutdown
-40 to +85
-20 to +85
SOIC(N)/8
30.9
MAX768 
Dual Output
Inverter
Regulated
2.5 5.5 0.8
-5
5
-11 11 0.005 240
Adjustable Freq.
External Sync.
Shutdown
-40 to +85
QSOP/16
30.9
MAX870 
Inverter
Unregulated
1.4 5.5 1 -VIN - - 0.025 125 - -40 to +85
SOT/5
9
MAX871 
Inverter
Unregulated
1.4 5.5 3.8 -VIN - - 0.025 500 - -40 to +85
SOT/5
9
MAX881R 
Inverter
Regulated
2.5 5.5 0.95 -2 -VIN-0.6 -0.5 0.01 100 Shutdown -40 to +85
µMAX/10
15.4
See All Charge Pumps (48)



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