E-L5991AD STMicroelectronics, E-L5991AD Datasheet - Page 18

• Manufacturer Part Number: E-L5991AD
• Description: IC CTRLR PRIMARY W/STDBY 16-SOIC
• Manufacturer: STMicroelectronics

Specifications of E-L5991AD

• Mfg Application Notes: 25W Off-Line Battery Charger with L5991A AppNote 300W Forward Converter with L5991A AppNote 45W AC-DC Adapter with Standby AppNote 60W Power Supply using the L5991 AppNote 80W Adapter using L6561/L5991A AppNote 90W SMPS for Monitors with Standby AppNote Trick Enhances L5991s Standby Function AppNote L5991-Based Converter, Temp Extra Power AppNote Auxiliary Power Supply Design AppNote Minimize Power Losses AppNote
• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 1MHz
• Duty Cycle: 93%
• Voltage - Supply: 8.2 V ~ 20 V
• Buck: No
• Boost: Yes
• 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
• Duty Cycle (max): 93 %
• Output Voltage: 5.075 V
• Output Current: 1500 mA
• Mounting Style: SMD/SMT
• Switching Frequency: 1000 KHz
• Operating Supply Voltage: 12 V to 20 V
• Maximum Operating Temperature: + 150 C
• Fall Time: 35 ns
• Minimum Operating Temperature: - 40 C
• Rise Time: 70 ns
• Synchronous Pin: Yes
• Topology: Boost, Flyback
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-5288-5

L5991 - L5991A
Figure 39. Typical E/A compensation networks.
Figure 40. Feedback with optocoupler.
Figure 41. Slope compensation techniques.
I
18/23
R
SENSE
R
SLOPE
R
B
OPTIONAL
ST-BY
R
C
ISEN
V
RCT
C
A
T
Error Amp compensation circuit for stabilizing any current-mode topology except
for boost and flyback converters operating with continuous inductor current.
Error Amp compensation circuit for stabilizing current-mode boost and flyback
topologies operating with continuous inductor current.
REF
R
P
From V
P
From V
16
4
2
13
O
R
L5991
12
R
i
R
R
O
d
d
i
SGND
L5991
C
f
C
f
5
I
VFB
R
6
COMP
COMP
SENSE
VFB
VFB
R
R
R
SLOPE
COMP
f
f
5
6
5
6
R
2.5V
2.5V
B
OPTIONAL
+
+
-
-
EA
EA
ST-BY
R
C
ISEN
V
RCT
A
T
REF
+
+
D97IN759
TL431
16
4
2
13
1.3mA
1.3mA
L5991
12
SGND
2R
2R
12
12
D97IN760A
R
R
SGND
V
OUT
SGND
SGND
L5991
12
10
13
D97IN507
OPTIONAL
OUT
ISEN
R
R
SLOPE
C
R
SLOPE
SENSE