L5991 STMicroelectronics, L5991 Datasheet - Page 5

• Manufacturer Part Number: L5991
• Description: IC PRIMARY CTRLR W/STANDBY 16DIP
• Manufacturer: STMicroelectronics

Specifications of L5991

• 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: 11 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-DIP (0.300", 7.62mm)
• Frequency-max: 1MHz
• Duty Cycle (max): 93 %
• Output Voltage: 5.075 V
• Output Current: 1500 mA
• Mounting Style: Through Hole
• 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
• Package: DIP16 AND SO16
• For Use With: 497-8226 - BOARD EVAL L5991/STP12NK80Z497-6416 - BOARD EVAL L5991/STP10NK60Z497-5083 - EVAL BOARD 3PH PWR SUPPLY W/ESBT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-7251-5; L5991

Figure 3. Quiescent current vs. input voltage.
9 .0
8 .5
8 .0
7 .5
7 .0
Figure 5. Quiescent current vs. input voltage
Iq [mA]
36
30
24
18
12
Figure 7. Reference voltage vs. load current.
Vref [V]
5.05
4.95
Iq [m A ]
5.1
4.9
6
0
8
5
8
0
10
1 0
Co = 1nF, Tj = 25°C
DC = 100%
and switching frequency.
5
1 2
12
V 14 = 0, V 5 = V ref
R t = 4.5Koh m ,T j = 25 °C
1 4
10
14
Iref [mA]
Vcc [V]
V c c
1 6
Vcc=15V
Tj = 25°C
[V ]
16
1 00K hz
1 M hz
15
1 8
18
2 0
5 00K hz
3 00K hz
20
20
2 2
100KHz
500KHz
300KHz
1MHz
2 4
25
22
Figure 4. Quiescent current vs. input voltage
Figure 6. IC Consumption vs. Temperature.
Figure 8. Vref vs. junction temperature.
Vref [V])
5.05
4.95
Iq [m A ]
3 6
3 0
2 4
1 8
1 2
0.01
100
5.1
4.9
0.1
6
0
10
[mA]
1
5
-50
-50
8
-25
-25
1 0
C o = 1 nF, T j = 25°C
D C = 0%
Vcc =15V, after turn-on
RT=13.3 k , CT=1nF
and switching frequency.
Quiescent current
Vcc = 15V
Iref = 1mA
0
0
1 2
Junction temperature [˚C]
Vc=Vcc= Vccon-0.5V, before turn-on
DC = 0
25
25
Start-up current
1 4
V cc [V ]
Tj (°C)
50
50
1 6
75
75
L5991 - L5991A
Vcc =15V, after turn-on
RT=13.3k , CT=1nF
DC=75%, Co=1nF
Operating current
1 8
100
100
2 0
125
125
1 00 K H z
3 00 K H z
5 00 K H z
1 M Hz
5/23
150
150
2 2