SM600/SM601/SM602/SM610/SM611/SM612

4/90 Rev 1.1 2/94

Copyright

© 1994

11861 Western Avenue

∞

∞

∞

∞

∞ Garden Grove, CA 92841

3

(714) 898-8121

∞

∞

∞

∞

∞ FAX: (714) 893-2570

Current Delay Time

Current Rise Time

Voltage Rise Time

Voltage Storage Time

Voltage Fall Time

Current Fall Time

40

75

50

75

150

20

50

30

450

50

70

85

20

50

30

450

50

70

85

FIGURE 4 - NEGATIVE OUTPUT DOWN/UP (BUCK-BOOST) CONVERTER

FIGURE 3 - STEP DOWN (BUCK) CONVERTER

Test Conditions

Parameter

Units

SG610/611/612

SG600/601/602

Min.

Typ. Max.

SM60X

SM60X

APPLICATION CIRCUITS

Note 4. In switching an inductive load, the current will lead the voltage on turn-on and lag the voltage on turn-off (see Figure 2). Therefore, Voltage

Delay Time (t

Note 5. The efficiency is a measure of internal power losses and is equal to Output Power divided by Input Power. The switching speed circuit of Figure

1, in which the efficiency measured, is represenative of typical operating conditions for the SM600 series switching regulators.

Note 6. SM610/611/612 Test Circuit and waveforms are identical but of opposite polarity (V

IN

= -25V, V

OUT

= -5V, I

DRIVE

= +20mA).

SM600

SM601

SM602

FIGURE 1 - SM600/601/602 SWITCHING SPEED CIRCUIT

FIGURE 2 - SM600/601/602 SWITCHING WAVEFORMS

Min.

Typ. Max.

40

75

50

75

150

ns

ns

ns

ns

ns

ns

%