L6590 STMicroelectronics, L6590 Datasheet - Page 3

• Manufacturer Part Number: L6590
• Description: FULLY INTEGRATED POWER SUPPLY FIPS
• Manufacturer: STMicroelectronics

ELECTRICAL CHARACTERISTICS (continued)
Error Amp Section
Oscillator Section
Device Operation Section
Soft Start
Circuit Protections
Stand by Section
(*) Parameter not tested in production.
PN/OFF/BROWN -OUT
THERMAL SHUTDOWN (*)
Symbol
Dmax
I
Dmin
V
V
V
SVR
V
OVP
I
source
F
I
I
V
F
pknor
V
V
I
V
I
pksb
Hyst
I
I
V
ddon
ddoff
t
th on
psc
ccss
I
B
lim
I
osc
op
off
m
stb
CL
b
oh
p
fb
ol
z
Input Voltage
Input Bias Current
Avol
Unity Gain Bandwidth
Supply Voltage Rejection
Output Source Current
V
V
Oscillator Frequency
Min. Duty Cycle
Max. Duty Cycle
Operating Supply Current
Peak Start up Current
Zener Voltage
Start Threshold Voltage
Min Operating Voltage After
Turn on
Soft Start Threshold Voltage
Pulse by Pulse Current Limit
Over Voltage Protection
Internal Masking Time
Current Threshold for Stand-By
Operation
Stand by Frequency
Current Threshold for Normal
Operation
Stand by current
Threshold Voltage (Device on)
Source Current
Supply Current in Off Condition
Source Current
On/Off Clamp Pull-Up Voltage
Thermal Shutdown
Hysteresis
out
out
High
Low
Parameter
Tj = 25 C
Tj = 125 C
Vcomp = 3.5V
I
I
Tj = 25 C
Vcomp = 1V
V
dI/dt = 0.2A/ s
Transition from 65KHz to
22KHz
Tj = 25 C
Transition from 22KHz to
65KHz
f
V
V
V
I
source
sink
SW
sink
cc
pin
pin
pin
= 0V
= fstand-by
= 1mA V
= 0.5mA
= 3V
= 2V
= 2V
= 0.5mA V
Test Condition
fb
= 3V
fb
= 2V
2.425
Min.
2.45
2.43
500
150
0.7
0.5
3.8
60
58
56
66
17
14
12
15
19
30
5
7
5
Typ.
17.5
14.5
12.5
15.5
-0.3
625
120
170
165
2.5
2.5
4.5
7.5
2.5
0.5
5.5
70
65
65
70
10
70
23
50
40
1
1
6
5
5
2.575
Max.
2.55
2.57
700
1.0
7.5
72
74
74
15
18
15
13
16
27
70
-1
0
8
8
6
L6590
MHz
Unit
KHz
KHz
KHz
mA
mA
mA
mA
mA
mA
mA
mA
mA
dB
dB
ns
%
%
V
V
V
V
V
V
V
V
V
V
V
C
C
A
A
3/8