MAX870CSLASHD datasheet(4/8 Pages) MAXIM

4 / 8 page

_____________________Pin Description

Switched-Capacitor Voltage Inverters

_______________________________________________________________________________________

____________________________Typical Operating Characteristics (continued)

(Circuit of Figure 1, VIN = +5V, C1 = C2 = C3, TA = +25°C, unless otherwise noted.)

100

10 15 20

25 30 35

MAX870

EFFICIENCY vs. OUTPUT CURRENT

OUTPUT CURRENT (mA)

VIN = 2.0V

VIN = 3.3V

VIN = 5.0V

MAX871

EFFICIENCY vs. OUTPUT CURRENT

OUTPUT CURRENT (mA)

VIN = 2.0V

VIN = 3.3V

VIN = 5.0V

100

250

200

150

300

350

400

450

500

550

600

-40

-15

PUMP FREQUENCY vs. TEMPERATURE

TEMPERATURE (°C)

VIN = 1.5V, MAX871

VIN = 1.5V, MAX870

VIN = 3.3V OR 5.0V, MAX870

VIN = 3.3V OR 5.0V, MAX871

MAX870

OUTPUT NOISE AND RIPPLE

µs/div

VIN = 3.3V, VOUT = -3.18V, IOUT = 5mA,

20mV/div, AC COUPLED

Flying Capacitor’s Positive Terminal

C1+

Ground

GND

Flying Capacitor’s Negative Terminal

C1-

Positive Power-Supply Input

Inverting Charge-Pump Output

OUT

FUNCTION

NAME

VOLTAGE INVERTER

OUT

C1+

VIN

0.33

µF*

µF

(MAX870)

0.33

µF*

0.33

µF*

VOUT

GND

C1-

MAX870

MAX871

Figure 1. Test Circuit

MAX871

OUTPUT NOISE AND RIPPLE

µs/div

VIN = 3.3V, VOUT = -3.14V, IOUT = 5mA,

20mV/div, AC COUPLED

MAX870C/D Datasheet(PDF) 4 Page - Maxim Integrated Products

MAX870C/D Datasheet(HTML) 4 Page - Maxim Integrated Products

Html Pages

1 2 3 4 5 6 7 8

Datasheet Download

Link URL