MAX840ISA

MAX840ISA, charge-pump power supply, 10.5V, 471mW, 100kHz, SOIC

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Price:: US $1.38~1.38 / piece [Get Latest Price]

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1 ~ 1673 :	1.38 / Piece

PartNumber:: MAX840ISA

Brand:: Maxim Integrated Products - Maxim | Pack: SOIC | D/C: 97+

Availability:: Supply Ability: 100/Month Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

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Products Upload time: 2013-07-04

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Part Number:MAX840ISA
US $1.38 - 1.38
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piece

Product Summary

The max840isa low-noise, inverting charge-pump power supply is ideal for biasing GaAsFETs in cellular telephone transmitter amplifiers. The max840isa operates with inputs down to 2.5V. The MAX840 offers both a -2V preset output and a -0.5V to -9.4V adjustable output. The max840isa uses an external positive control voltage to set the negative output voltage. Applications are (1)Cellular Phones; (2)GaAsFET Power Amplifier Modules; (3)Personal Communicators, PDAs; (4)Wireless Data Loggers; (5)Continuously Adjustable GaAsFET Bias; (6)LCD-Bias Contrast Control; (7)Regulated Negative Power Supplies.

Parametrics

max840isa absolute maximum ratings: (1)Supply Voltage, VIN to GND : -0.3V to 10.5V; (2)VNEGOUT to GND: -10.5V to 0.3V; (3)VIN to VNEGOUT: -0.3V to 21V; (4)VOUT to GND (Note 1): VNEGOUT to 0.3V; (5)V SHDN to GND : -0.3V to (VIN + 0.3V); (6)Continuous Power Dissipation (TA = +70°C); (7)SO (derate 5.88mW/°C above +70°C): 471mW; (8)Operating Temperature Ranges: -25°C to +85°C; (9)Storage Temperature Range : -65°C to +150°C; (10)Lead Temperature (soldering, 10sec): +300°C.

Features

max840isa features: (1)Fixed -2V or Adjustable -0.5V to -9.4V Output at 4mA (MAX840); (2)2.5V to 10V Input Voltage Range; (3)Operate with Small Capacitors (as low as 0.22μF); (4)1mVp-p Output Voltage Ripple; (5)Charge-Pump Switching Frequency: 100kHz in Normal Operation, 20kHz in Shutdown Mode (MAX844); (6)1μA Max Logic-Level Shutdown Over Temp.; (7)Small 8-Pin SO Package.