MAX864 Ver la hoja de datos (PDF) - Maxim Integrated

Número de pieza

componentes Descripción

Fabricante

MAX864

Dual-Output Charge Pump with Shutdown

Maxim Integrated 

Dual-Output Charge Pump with Shutdown

____________________________Typical Operating Characteristics (continued)

(VIN = 5.0V, capacitor values in Table 1, TA = +25°C, unless otherwise noted.)

TIME TO EXIT SHUTDOWN

+5V

0V

+10V

FC0 = FC1 = IN (185kHz), C1–C4 = 1µF

FC0 = FC1 = GND (7kHz), C1–C4 = 33µF

0V

-10V

1ms/div

_____________________Pin Description

PIN

1

2

3, 11

4

5

6

7

8

9, 10,

13, 14

12

15

16

NAME

C1-

C2+

GND

C2-

V-

SHDN

FC1

FC0

N.C.

IN

V+

C1+

FUNCTION

Negative Terminal of the Flying Boost

Capacitor

Positive Terminal of the Flying

Inverting Capacitor

Ground (connect pins 3 and 11 together)

Negative Terminal of the Flying

Inverting Capacitor

Output of the Inverting Charge Pump

Active-Low Shutdown Input. With

SHDN low, the part is in shutdown

mode and its supply current is less

than 1µA. In shutdown mode, V+

connects to IN through a 22Ω switch,

and V- connects to GND through a

6Ω switch.

Frequency Select, MSB (see Table 1)

Frequency Select, LSB (see Table 1)

No Connect—no internal connection.

Connect these to ground to improve

thermal dissipation.

Positive Power-Supply Input

Output of the Boost Charge Pump

Positive Terminal of the Flying Boost

Capacitor

VCC IN

C1

C2

+5V

MAX864

1 C1-

C1+ 16

2 C2+

3

GND

V+ 15

N.C. 14

4 C2-

N.C. 13

5 V-

6 SHDN

7 FC1

IN 12

GND 11

N.C. 10

8 FC0

N.C. 9

SEE TABLE 1 FOR CAPACITOR VALUES.

C3

IL+

V+ OUT

RL+

C4

RL-

IL-

V- OUT

Figure 1. Test Circuit

_______________________________________________________________________________________ 5

Share Link: