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L6739 Datasheet(PDF) 9 Page - STMicroelectronics

No. de pieza L6739
Descripción Electrónicos  CPU and DSP power supply
PDF  30 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6739 Datasheet(HTML) 9 Page - STMicroelectronics

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L6739
Electrical specifications
30
3.2
Electrical characteristics
Table 6. Electrical characteristics
(VCC = 12 V; VCCDR = open; TA = 25 C unless otherwise specified)
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
Supply current and power-on
ICC
VCC supply current
EN = HIGH
7.5
mA
EN = GND
6.0
mA
EN = HIGH, VCCDR = VCC = 5 V
5.5
mA
EN = GND, VCCDR = VCC = 5 V
4
mA
ICCDR
VCCDR supply current
VCC = VCCDR = 5 V,
UGATE and LGATE = open,
EN = HIGH, UGATE ON,
LGATE OFF
0.4
mA
VCC = VCCDR = 5 V,
UGATE and LGATE = open,
EN = HIGH, UGATE OFF,
LGATE ON
0.4
mA
VCC = VCCDR = 5 V,
EN = GND
UGATE and LGATE = open
0.2
mA
UVLOVCC
Turn-ON threshold
VCC rising
4.1
V
Hysteresis
0.2
V
UVLOVCCDR
Turn-ON threshold
VCCDR rising
3.9
V
Hysteresis
0.15
V
LDO
Voltage
5.75
V
Turn-ON threshold
Measured at the VCC pin
6.1
V
Turn-OFF threshold
3.5
V
Oscillator enable and soft-start
FSW
Main oscillator accuracy
OSC = open
180
200
220
kHz
kOSC
Oscillator gain
Current sink/source from OSC
10
kHz/
A
tSS
Soft-start time
OSC = open
4.5
5.12
5.7
msec
tSSdelay
SS delay
OSC = open, before SS
4.5
5.12
5.7
msec
VOSC
PWM ramp amplitude
2
V
d
Duty cycle
0
100
%
ENABLE
EN
Input logic high
EN rising
1.1
V
Input logic low
EN falling
0.5
V



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