L5991A STMicroelectronics, L5991A Datasheet - Page 4

• Manufacturer Part Number: L5991A
• Description: IC CTRLR PRIMARY BCD 16-DIP
• Manufacturer: STMicroelectronics

Specifications of L5991A

• 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-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
• 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: 497-5722

L5991 - L5991A
ELECTRICAL CHARACTERISTICS (continued.)
Figure 1. L5991 - Quiescent current vs. input
4/23
0 .2
0 .1 5
0 .1
0 .0 5
0
V
OUTPUT SECTION
SUPPLY SECTION
STANDBY FUNCTION
SYNCHRONIZATION SECTION
OVER CURRENT PROTECTION
DISABLE SECTION
3 0
2 0
4
REF
8
6
Symbol
V
V
CCOFF
V
I
CCON
V
I
V
V
V
qSH
-V
0
I
V
I
I
I
op
hys
S
q
T1
1
1
Z
1
1
t
Iq [m A ]
ST-BY
voltage.
(X = 7.6V and Y= 8.4V for L5991A)
4
Fall Time
Rise Time
UVLO Saturation
Startup voltage
Minimum Operating
Voltage
UVLO Hysteresis
Start Up Current
Operating Current
Quiescent Current
Zener Voltage
Standby Threshold
Clock Amplitude
Clock Source Current
Sync Pulse
Sync Pulse Current
Fault Threshold Voltage
Shutdown threshold
Input Bias Current
Quiescent current After
Disable
V 1 4 = 0 , P in 2 = o p e n
T j = 2 5 °C
8
Parameter
X
1 2
V c c [V ]
1 6
Y
2 0
C
C
C
C
V
Before Turn-on at:
V
C
(After turn on), CT = 1nF,
R
I
I
V
V
I
Vclock = 3.5V
Low Level
High Level
VSYNC = 3.5V
V
V
8
ST-BY
SOURCE
CC
CC
comp
comp
pin14
CC
O
O
O
O
T
T
= 20mA
2 4
= 13.3k , C
= 1nF, R
= 1nF
= 2.5nF
= 1nF
= 2.5nF
= V
= V
= 15V
Master Operation
= 2mA
Falling
Rising
= 0 to 3V
Slave Operation
C
C
= 0.8mA
2 8
= 0 to V
= V
Test Condition
T
= 13.3k , C
CCON
O
=0nF
CCON;
Figure 2. L5991 - Quiescent current vs. input
3 5 0
3 0 0
2 5 0
2 0 0
1 5 0
1 0 0
-0.5V
5 0
0
I
0
sink
O
I q [ µ A ]
=1nF
= 10mA
L5991A
L5991A
L5991A
voltage (after disable).
(X = 7.6V and Y= 8.4V for L5991A)
L5991
L5991
L5991
4
8
Min.
7.8
4.5
0.5
3.5
0.5
1.1
2.4
14
40
21
-1
9
7
4
3
X
V c c [ V ]
1 2
Typ.
330
8.4
7.6
0.8
7.0
2.5
4.0
1.2
2.5
20
35
50
70
15
10
75
25
45
5
9
7
Y
1 6
V 1 4 = V r e f
T j = 2 5 ° C
Max.
100
120
1.0
8.2
1.3
2.6
60
16
11
13
10
30
9
1
1
2 0
Unit
mA
mA
mV
mA
mA
ns
ns
ns
ns
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
A
A
A
2 4