ap3421 BCD Semiconductor Manufacturing Limited, ap3421 Datasheet - Page 10

• Manufacturer Part Number: ap3421
• Description: 1.3mhz, Dual 1.0a Synchronous Step-down Converters
• Manufacturer: BCD Semiconductor Manufacturing Limited

Typical Performance Characteristics (Continued)
V
otherwise specified.
20mA/div
Aug. 2010 Rev. 1.2
Induction
Induction
Induction
Output 1
Output 1
Output 2
1.3MHz, Dual 1.0A Synchronous Step-down Converters
Current
Current
Current
IN
1A/div
1A/div
2V/div
2V/div
2V/div
5V/div
V
V
=V
V
V
O1
O2
IN
IN
E/S
=5V, V
Figure 16. Short Protection for Output 1
Figure 18. Output 1 Short Recovery
O1
=2.5V, V
Time 40µs/div
Time 10ms/div
O2
=1.2V, L1=L2=3.3µH, C1=C3=10µF, C2=C2’=10µF, T
10
Induction
Induction
Output 2
Output 1
Current
Current
Induction
Output 2
1A/div
1A/div
5V/div
Current
1A/div
2V/div
2V/div
2V/div
V
V
V
V
IN
O1
O2
IN
Figure 17. Short Protection for Output 2
BCD Semiconductor Manufacturing Limited
Figure 19. Output 2 Short Recovery
Preliminary Datasheet
Time 40µs/div
Time 10ms/div
AP3421/A
A
=25°C, unless