SC33063A ONSEMI [ON Semiconductor], SC33063A Datasheet - Page 6

• Manufacturer Part Number: SC33063A
• Description: 1.5 A, Step−Up/Down/ Inverting Switching Regulators
• Manufacturer: ONSEMI [ON Semiconductor]

8. If the output switch is driven into hard saturation (non−Darlington configuration) at low switch currents (≤ 300 mA) and high driver currents
V
in
(≥ 30 mA), it may take up to 2.0 ms to come out of saturation. This condition will shorten the off time at frequencies ≥ 30 kHz, and is magnified
at high temperatures. This condition does not occur with a Darlington configuration, since the output switch cannot saturate. If a
non−Darlington configuration is used, the following output drive condition is recommended.
R
sc
8
7
6
9a. External NPN Switch
Figure 10. External Current Boost Connections for I
1
2
http://onsemi.com
V
out
6
V
in
R
sc
9b. External NPN Saturated Switch
8
7
6
C
Peak Greater than 1.5 A
(See Note 8)
1
2
R
R ³ 0 for
constant V
in
V
out