L5993D STMicroelectronics, L5993D Datasheet - Page 2

• 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
ABSOLUTE MAXIMUM RATINGS
(*) maximum package power dissipation limits must be observed
PIN CONNECTION
THERMAL DATA
PIN FUNCTIONS
2/22
N.
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Symbol
Symbol
R
th j-amb
V
I
T
P
OUT
T
CC
stg
tot
j
C-POWER
DC-LIM
COMP
SYNC
PGND
SGND
Name
VREF
ISEN
RCT
OUT
VFB
V
DIS
DC
SS
V
CC
C
Supply Voltage (I
Output Peak Pulse Current
Analog Inputs & Outputs (6,7)
Analog Inputs & Outputs (1,2,3,4,5,15,14, 13, 16)
Power Dissipation @ T
Junction Temperature, Operating Range
Storage Temperature, Operating Range
Thermal Resistance Junction -Ambient (DIP16)
Thermal Resistance Junction -Ambient (SO16)
Synchronization. A synchronization pulse terminates the PWM cycle and discharges Ct
Oscillator pin for external C
Duty Cycle control
5.0V +/-1.5% reference voltage at 25 C
Error Amplifier Inverting input
Error Amplifier Output
Soft start pin for external capacitor Css
Supply for internal ”Signal” circuitry
Supply for Power section
High current totem pole output
Power ground
Signal ground
Current sense
Disable. It must never be left floating. Tie to SGND if not used.
Connecting this pin to Vref, DC is limited to 50%. If it is left floating or grounded no limitation is
imposed
Constant Power vs. Switching Frequency. Connect a capacitor to SGND. The pin must be
connected to VREF if not used.
CC
@ T
COMP
SYNC
VREF
< 50mA) (*)
RCT
VFB
V
DC
amb
SS
amb
CC
Parameter
Parameter
= 50 C (SO16)
= 70 C (DIP16)
1
2
3
4
5
6
7
8
t
, R
D97IN783
t
components
16
15
14
13
12
11
10
9
Function
C-POWER
DC-LIM
DIS
ISEN
SGND
PGND
OUT
V
C
-40 to 150
-55 to 150
-0.3 to 8
-0.3 to 6
selflimit
Value
Value
0.83
120
1.5
80
1
Unit
Unit
C/W
C/W
W
W
V
A
V
V
C
C