L5993D STMicroelectronics, L5993D Datasheet - Page 18

• Manufacturer Part Number: L5993D
• Description: IC PWM CONTROLLER 16 SOIC
• Manufacturer: STMicroelectronics

Specifications of L5993D

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 1MHz
• Duty Cycle: 85%
• Voltage - Supply: 11 V ~ 20 V
• Buck: No
• Boost: No
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: 0°C ~ 105°C
• Package / Case: 16-SOIC (3.9mm Width)
• Frequency-max: 1MHz
• Lead Free Status / RoHS Status: Contains lead / Request inventory verification
• Other names: 497-2387-5

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
4
3
L5993
SGND
R
START
12
8
V
CC
L5993
PGND
11
80 400V
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
Z
SGND
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
SENSE
I
SENSE
2.5
I
1-
pk
R
R
2
1