Figure 4-1 shows the UCC33010, UCC33010-Q1, UCC33020, UCC33020-Q1, UCC33410, UCC33410-Q1, UCC33420,
UCC33420-Q1 pin diagram for the VSON-12 package. For a detailed description of the device pins, see
the Pin Configuration and Functions section in the UCC33010, UCC33010-Q1, UCC33020, UCC33020-Q1, UCC33410, UCC33410-Q1, UCC33420,
UCC33420-Q1 data sheets.
Figure 4-1 Pin Diagram (VSON-12) Package
Table 4-2 Pin FMA for Device Pins
Short-Circuited to Ground
Pin Name
Pin No.
Description of Potential Failure Effects
Failure Effect Class
EN/FLT
1
Device is disabled. No output.
B
VINP
2
Device has no input. No output.
B
GNDP
3
No effect. Normal operation.
D
GNDP
4
No effect. Normal operation.
D
GNDP
5
No effect. Normal operation.
D
GNDP
6
No effect. Normal operation.
D
SEL
7
Output is set to 5.5V.
C
VCC
8
Output is shorted. No output.
B
GNDS
9
No effect. Normal operation.
D
GNDS
10
No effect. Normal operation.
D
GNDS
11
No effect. Normal operation.
D
GNDS
12
No effect. Normal operation.
D
Table 4-3 Pin FMA for Device Pins
Open-Circuited
Pin Name
Pin
No.
Description of Potential Failure Effects
Failure
Effect Class
EN/FLT
1
EN/FLT is an undetermined state. Output can be random.
B
VINP
2
Device has no input. No output.
B
GNDP
3
No effect. Normal operation.
D
GNDP
4
No effect. Normal operation.
D
GNDP
5
No effect. Normal operation.
D
GNDP
6
No effect. Normal operation.
D
SEL
7
SEL pin is at an undetermined state. Output voltage can change
between 5V and 5.5V randomly.
C
VCC
8
Output OVP is triggered. No output.
B
GNDS
9
No effect. Normal operation.
D
GNDS
10
No effect. Normal operation.
D
GNDS
11
No effect. Normal operation.
D
GNDS
12
No effect. Normal operation.
D
Table 4-4 Pin FMA for Device Pins
Short-Circuited to Adjacent Pin
Pin Name
Pin No.
Shorted to
Description of Potential Failure Effects
Failure Effect Class
EN/FLT
1
VINP
Device is always enabled and cannot be turned off.
C
VINP
2
GNDP
Device has no input. No output.
B
GNDP
3
GNDP
No effect. Normal operation.
D
GNDP
4
GNDP
No effect. Normal operation.
D
GNDP
5
GNDP
No effect. Normal operation.
D
GNDP
6
N/A
Not considered. Corner pin.
D
SEL
7
VCC
Output is set to 5V only.
C
VCC
8
GNDS
Output is shorted. No output.
B
GNDS
9
GNDS
No effect. Normal operation.
D
GNDS
10
GNDS
No effect. Normal operation.
D
GNDS
11
GNDS
No effect. Normal operation.
D
GNDS
12
N/A
Not considered. Corner pin.
D
Table 4-5 Pin FMA for Device Pins Short-Circuited to
Supply
Pin Name
Pin
No.
Description of Potential Failure Effects
Failure
Effect Class
EN/FLT
1
Device is always enabled and cannot be turned off.