L5993 STMicroelectronics, L5993 Datasheet - Page 18

• Manufacturer Part Number: L5993
• Description: Switching Converters, Regulators & Controllers Prog Current Mode
• Manufacturer: STMicroelectronics

Specifications of L5993

• Mounting Style: Through Hole
• Package / Case: PDIP-16
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

L5993
Figure 38. Protection against overvoltage/feedback disconnection (latched)
Figure 39. Protection against overvol-
Figure 41. Constant power in pulse-by-pulse current limitation (flyback discontinuous)
Figure 42. Voltage mode operation.
18/22
tage/feedback disconnection (not
latched)
DIS
VREF
DC
14
R
12
START
V
CC
L5993
SGND
4
3
R
START
12
8
V
CC
L5993
PGND
80 ÷ 400V
11
8
PGND
V
D97IN774
11
11
IN
L5993
OUT
D97IN775A
SGND
DC
10
12
13
10K
COMP
DC
ISEN
SGND
3
6
R
L5993
FF
12
R
Figure 40. Device shutdown on overcurrent
PGND
D97IN778A
L p
13
L5993
11
ISEN
V
R SENSE
SGND
Z
R
FF
2.2K
= 6·10
12
DIS
14
13
D97IN777
4
OPTIONAL
6
14
R SENSE
R
VREF
DIS
ISEN
12
START
R·L p
V
CC
L5993
SGND
8
R
1
11
D97IN776A
PGND
D98IN906
I
pk max
R
2
R
R
I
SENSE
SENSE
2.5
•
I
1-
pk
R
R
2
1