E-L5991D STMicroelectronics, E-L5991D Datasheet - Page 6

• Manufacturer Part Number: E-L5991D
• Description: Current Mode PWM Controllers Prog Current Mode
• Manufacturer: STMicroelectronics

Specifications of E-L5991D

• Number Of Outputs: 1
• Duty Cycle (max): 93 %
• Output Voltage: 5.075 V
• Output Current: 1500 mA
• Mounting Style: SMD/SMT
• Package / Case: SO-16
• 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

Figure 11. Output saturation.
L5991 - L5991A
Figure 9. Vref vs. junction temperature.
Vref [V]
5.05
4.95
16
14
12
10
Figure 13. UVLO Saturation
6/23
50
40
30
20
10
Ipin10 [mA]
5.1
4.9
8
6
0
5
-50
0
Vsat = V
0
-25
200
before turn-on
Vcc < Vccon
0.2
10
[V]
Vcc = 15V
Iref= 20mA
0
400
0.4
25
Vpin10 [mV]
600
Isource [A]
Tj (°C)
0.6
50
Vcc = Vc = 15V
Tj = 25°C
800
75
0.8
1,000 1,200 1,400
100
1
125
150
1.2
Figure 10. Vref SVRR vs. switching frequency.
Figure 12. Output saturation.
Figure 14. Timing resistor vs. switching frequency.
2.5
1.5
0.5
SVRR (dB)
120
5000
2000
1000
fsw (KHz)
80
40
2
1
0
500
200
100
0
50
20
10
1
0
V sat = V
0.2
Vc c = Vc = 15V
10
T j = 25°C
10
10
[V]
5.6nF
0.4
100
Rt (kohm)
Isink [A ]
fsw (Hz)
Vcc
Tj = 25°C
0.6
20
2.2nF
= 15V, V15 =0V
1000
0.8
30
Vcc=15V
Vp-p=1V
10000
1
100pF
220pF
470pF
1nF
1.2
40