4

SP782/SP784 DS/08

SP782/784 Programmable Charge Pump

© Copyright 2000 Sipex Corporation

AC CHARACTERISTICS*

(Typical @ 25

°C and nominal supply voltages unless otherwise noted)

PARAMETER

MIN.

TYP.

MAX.

UNITS

CONDITIONS

SP782 POWER-UP DELAY TIME

±10V OUTPUT

t

1000

µsR

t

1000

µsR

±5V OUTPUT

t

10

µsR

t

150

µsR

SP782 OUTPUT DELAY TIME

t

1000

µsR

from

±10V to ±5V

t

500

µsR

from

±5V to ±10V

SP784 POWER-UP DELAY TIME

±10V OUTPUT

t

5

ms

R

t

5

ms

R

±5V OUTPUT

t

10

µsR

t

1000

µsR

SP784 OUTPUT DELAY TIME

t

10

ms

R

from

±10V to ±5V

t

2

ms

R

from

±5V to ±10V

* - Using the charge pump capacitor values specified in the previous pages for each device.

Figure 1. Charge Pump Waveforms

–10V

+10V

C

2

+

C

2

–

(a)

(b)

C

2

+

+5V

GND

GND

C

2

–

–5V

GND

GND