L5994 Просмотр технического описания (PDF) - STMicroelectronics
Номер в каталоге
Компоненты Описание
производитель
L5994 Datasheet PDF : 26 Pages
| |||
L5994 - L5994A
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
V5 Over voltage threshold ON
V1SNS
Under voltage threshold ON
V1SNS
SECTION 2 PWM CONTROLLER
V2out V2SNS feedback voltage
Vin = 5V to 20V
NOSKIP = REG5
Vi2sns-Vv2sns = 0 to 40mA
V19-V20 Overcurrent Threshold current
VSOFT2 = 3.1V
V19-V20 Pulse skipping mode threshold
voltage
Vin > 6.8V
V20 Over voltage threshold ON
V2SNS
Under voltage threshold ON
V2SNS
PWM CONTROLLERS CHARACTERISTICS
fOSC Switching frequency accuracy
OSC = 2.5V
OSC = GND OR 5V
V15 Voltage range for 300KHz
operation
Td Dead time
HS rise
LS rise
Tov Over voltage propagation time
V1SNS to PWROK or
V2SNS to PWROK
Tuv Under voltage propagation time V1SNS to PWROK or
V2SNS to PWROK
V5,V20 Output UVLO threshold latched Respect output voltage
I8,I17 Soft start current
V8,V17 Soft start clamp voltage
HIGH AND LOW SIDE GATE DRIVER (BOTH SECTIONS)
I25,I27 Source output peak current
I32,I30
Cload = 3.3nF
Sink output peak current
Cload = 3.3nF
RH RdsON resistance
Driver out high
RL RdsON resistance
Driver out low
VOH Output high voltage
HSTRAP = PREG5
Isource = 10mA;
HSOURCE = GND
Min. Typ. Max. Unit
2.09 2.15 2.21
V
1.66 1.71 1.76
V
1.566 1.64 1.714 V
37
50
63
mV
13
mV
1.843 1.9 1.957 V
1.451 1.496 1.541 V
255 300 345 KHz
170 200 230
2.4
2.6
V
50
ns
30
1.25
µs
1.5
µs
65
70
75
%
3.2
4
4.8
µA
3.1
V
1
A
1
A
2.1
4
Ohm
1.5
3
Ohm
4.4
5.3 5.61
V
4/26
Share Link: 