E-L5991AD STMicroelectronics, E-L5991AD Datasheet - Page 7

• 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

Figure 15. Switching frequency vs. tempera-
fsw (KHz)
320
310
300
290
280
Figure 17. Dead time vs Ct.
1,500
1,200
Figure 19. Delay to output vs junction temperature.
42
40
38
36
34
32
30
28
Dead time [ns]
900
600
300
-50
-50
Delay to output (ns)
-25
-25
Rt =4.5Kohm
ture.
2
0
0
Timing capacitor Ct [nF]
25
25
4
Tj (°C)
Tj (°C)
50
50
Rt= 4.5Kohm, Ct = 1nF
Vcc = 15V, V15=Vref
6
75
75
PIN10 = OPEN
1V pulse
on PIN13
100
100
8
V15 = Vref
125
125
V15 = 0V
10
150
150
Figure 16. Switching frequency vs. temperature.
fsw (KHz)
320
310
300
290
280
Figure 18. Maximum Duty Cycle vs Vpin3.
Figure 20. E/A frequency response.
G [dB]
150
100
3.5
2.5
1.5
50
DC Control Voltage Vpin3 [V]
0.01
3
2
1
0
-50
0
-25
10
0.1
20
0
1
30
V15 = Vref
25
Duty Cycle [%]
40
10
f (KHz)
Tj (°C)
50
Rt= 4.5Kohm, Ct = 1nF
Vcc = 15V, V15= 0
50
100
Rt = 4.5Kohm,
Ct = 1nF
60
75
L5991 - L5991A
1000
70
100
V15 = 0V
80
10000 100000
125
90 100
Phase
7/23
150
140
120
100
80
60
40
20