MAX868CSLASHD datasheet(2/12 Pages) MAXIM

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Regulated, Adjustable -2x

Inverting Charge Pump

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VIN = +3.3V, SHDN = IN, C1 = C2 = 0.22µF, CIN = 1µF, COUT = 10µF, TA = 0°C to +85°C, unless otherwise noted. Typical values

are at TA = +25°C.)

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.

IN to GND .................................................................-0.3V to +6V

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

IN to OUT.................................................................-0.3V to -17V

C1+ to GND ........................................(VIN - 12V) to (VIN + 0.3V)

C1- to GND.............................................................+0.3V to -12V

C2+ to GND ....................................................(VIN + 0.3V) to -6V

C2- to GND...............................................................+0.3V to -6V

SHDN, FB to GND .......................................-0.3V to (VIN + 0.3V)

PGND to GND .......................................................-0.3V to +0.3V

Output Current ....................................................................35mA

Short-Circuit Duration.................................................Continuous

Continuous Power Dissipation (TA = +70°C)

10-pin µMAX (derate 5.6mW/°C above +70°C) ...........444mW

Operating Temperature Range

MAX868EUB ....................................................-40°C to +85°C

Storage Temperature Range .............................-65°C to +160°C

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

FB = IN

No load, VFB = -50mV

RL = 3kΩ to GND

VIN = 5.5V, SHDN = IN or GND

VIN = 1.8V to 5.5V

SHDN = GND (OUT pulls to GND)

VIN = 1.8V to 5.5V, TA = +25°C

IOUT = 5mA, FB = IN

No load, SHDN = GND

VFB = 50mV

Closed loop

VOUT = -5V

CONDITIONS

-100

100

SHDN Input Bias Current

0.7VIN

VIH

SHDN Input Threshold

0.3VIN

VIL

-50

FB Input Bias Current

IOUT

Output Current

IIN

Supply Current

µA

1.8

5.5

VIN

Supply-Voltage Range

-30

ROUT

Open-Loop Output

Resistance

Ω

125

100

µA

0.1

IIN,SHDN

Shutdown Current

kHz

293

450

607

Oscillator Frequency

270

630

fOSC

Ω

0.2

ROUT,CL

Closed-Loop Output

Resistance

UNITS

MIN

TYP

MAX

SYMBOL

PARAMETER

TA = +25°C

TA = 0°C to +85°C

TA = +25°C

TA = 0°C to +85°C

VIN = 3.3V, VOUT = -5V

VIN = 5V, VOUT = -3.3V

VIN = 1.8V to 5.5V

-40

FB Trip Point

TA = 0°C to +85°C

TA = +25°C

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