Low-Noise, Dual-Output, Regulated Charge Pump

for GaAsFET, LCD, and VCO Supplies

2

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

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.

VIN, C1-, SYNC,

PSHDN, NSHDN to GND...............-0.3V to +6V

V+, C1+, C2+,

RDY to GND...................................-0.3V to +12V

SETP to GND .......................................................... -0.3V to +3V

SETN to GND............................................................-3V to +0.3V

V-, C2- to GND ...................................................... -12V to +0.3V

OUTP, OUTN Short Circuited to GND .......................Continuous

NOUT to V- ........................................................... -0.3V to +12V

POUT to V+ ........................................................... -12V to +0.3V

QSOP (derate 8.70mW/°C above +70°C) ......................696mW

Operating Temperature Range

MAX768EEE.......................................................-40°C to +85°C

Maximum Junction Temperature .....................................+150°C

Storage Temperature Range .............................-65°C to +165°C

Lead Temperature (soldering, 10sec) .............................+300°C

NSHDN = PSHDN = SYNC = GND

NSHDN = GND

(Note 2)

(Note 3)

CONDITIONS

µA

0.1

10

Shutdown Supply Current

µA

0.1

2

SHDN Input Bias Current

V

2.0

Shutdown/SYNC Logic-High Input Threshold

V

0.4

Shutdown/SYNC Logic-Low Input Threshold

%/mA

0.06

0.12

Load Regulation

V

-5.10

-5.00

-4.82

Negative Output Voltage

V

2.5

V

3.0

5.5

Input Voltage Range

Minimum Input Start-Up Voltage

%/V

-0.12

0.0

0.12

Line Regulation

mA

0.3

No-Load Supply Current at 100kHz

(negative regulator off)

V

1.25

11

Positive Output Voltage Adjustable Range

V

-11

-1.25

Negative Output Voltage Adjustable Range

mA

5

Maximum POUT, NOUT Output Currents

mA

0.8

1.4

No-Load Supply Current at 100kHz

(both regulators active)

UNITS

MIN

TYP

MAX

PARAMETER

mA

0.45

0.80

No-Load Supply Current at 25kHz

(both regulators active)

mV

420

900

20

1.5

V

4.81

5.00

5.14

Positive Output Voltage

10kHz < f < 1MHz

1.7

POUT

NOUT

mVp-p

1.2

Output Voltage Noise

SHUTDOWN