MAX870CSLASHD datasheet(2/8 Pages) MAXIM

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Switched-Capacitor Voltage Inverters

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ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VIN = +5V, C1 = C2 = 1µF (MAX870), C1 = C2 = 0.33µF (MAX871), TA = 0°C to +85°C, unless otherwise noted. Typical values

are at TA = +25°C.)

ELECTRICAL CHARACTERISTICS

(VIN = +5V, C1 = C2 = 1µF (MAX870), C1 = C2 = 0.33µF (MAX871), TA = -40°C to +85°C, unless otherwise noted.) (Note 2)

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.

Note 1: Capacitor contribution is approximately 20% of the output impedance [ESR + 1 / (pump frequency x capacitance)].

Note 2: All -40°C to +85°C specifications are guaranteed by design.

IN to GND ..............................................................+6.0V to -0.3V

OUT to GND ..........................................................-6.0V to +0.3V

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

C1-............................................................(VOUT - 0.3V) to +0.3V

OUT Output Current ...........................................................50mA

OUT Short Circuit to GND .............................................Indefinite

Continuous Power Dissipation (TA = +70°C)

SOT23-5 (derate 7.1mW/°C above +70°C)...................571mW

Operating Temperature Range

MAX870EUK/MAX871EUK ...............................-40°C to +85°C

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

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

MAX871

MAX870

RLOAD = 500kΩ,

TA =+25°C

RLOAD = 10kΩ

TA = +25°C

CONDITIONS

2.7

3.8

0.7

1.0

Supply Current

Power Efficiency

kHz

325

500

675

1.4

1.0

1.5

Minimum Supply Voltage

5.5

Maximum Supply Voltage

125

169

UNITS

MIN

TYP

MAX

PARAMETER

TA = +25°C

TA = 0°C to + 85°C

MAX871

MAX870

IOUT = 5mA

MAX871

RLOAD = 10kΩ

MAX870

CONDITIONS

4.4

1.3

Supply Current

Ω

Output Resistance

kHz

225

775

Oscillator Frequency

1.6

Minimum Supply-Voltage Range

194

UNITS

MIN

TYP

MAX

PARAMETER

TA = +25°C

Oscillator Frequency

C1 = C2 = 0.47µF

IOUT =

5mA

C1 = C2 = 1µF

Ω

Output Resistance (Note 1)

MAX870

TA = +25°C

C1 = C2 = 0.33µF

C1 = C2 = 0.22µF

MAX871

C1 = C2 = 0.1µF

TA = 0°C to + 85°C

MAX870

MAX871

MAX870

MAX871

RLOAD = ∞, TA =+25°C

99.3

Voltage Conversion Efficiency

MAX870

MAX871

RLOAD = ∞

Voltage Conversion Efficiency

MAX870

MAX871

RLOAD = 10kΩ

5.5

Maximum Supply-Voltage Range

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