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L6590D Datasheet(PDF) 5 Page - STMicroelectronics

No. de pieza L6590D
Descripción Electrónicos  FULLY INTEGRATED POWER SUPPLY FIPS
PDF  23 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6590D Datasheet(HTML) 5 Page - STMicroelectronics

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L6590
(*) Parameters tracking one the other
(**) Parameter guaranteed by design, not tested in production
(***) Parameters guaranteed by design, functionality tested in production
CIRCUIT PROTECTIONS
Ipklim
Pulse-by-pulse Current Limit
di/dt = 120 mA/ µs
550
625
700
mA
OVP
Overvoltage Protection
Icc = 10 mA (*)
16
16.5
17
V
LEB
Masking Time
After MOSFET turn-on (**)
120
ns
STANDBY SECTION
FSB
Oscillator Frequency
19
22
25
kHz
Ipksb
Peak switch current for Standby
Operation
Transition from Fosc to FSB
80
mA
Ipkno
Peak switch current for Normal
Operation
Transition from FSB to Fosc
190
mA
BROWNOUT PROTECTION (L6590D only)
Vth
Threshold Voltage
Voltage either rising or falling
2.4
2.5
2.6
V
IHys
Current Hysteresis
Vpin = 3V
-30
-50
-70
µA
VCL
Clamp Voltage
Ipin = 0.5 mA
5.6
6.4
7.2
V
THERMAL SHUTDOWN (***)
Threshold
150
165
°C
Hysteresis
40
°C
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
ELECTRICAL CHARACTERISTICS (continued)
Figure 1. Start-up & UVLO Thresholds
Figure 2. Start-up Current Generator
Start-up
UVLO
-50
0
50
100
150
6
8
10
12
14
16
Tj [°C]
Vcc [V]
Vdrain = 40 V
024
68
10
12
3
3.5
4
4.5
5
5.5
Vcc [V]
Icc [mA]
Tj = -25 °C
Tj = 25 °C
Tj = 125 °C



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