L5994A STMicroelectronics, L5994A Datasheet - Page 4

• Manufacturer Part Number: L5994A
• Description: IC CTRLR PS ADJ TRPL-OUT 32-TQFP
• Manufacturer: STMicroelectronics

Specifications of L5994A

• Pwm Type: Current Mode
• Number Of Outputs: 3
• Frequency - Max: 345kHz
• Duty Cycle: 96%
• Voltage - Supply: 4.75 V ~ 25 V
• Buck: Yes
• Boost: No
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: No
• Operating Temperature: -40°C ~ 140°C
• Package / Case: 32-TQFP, 32-VQFP
• Frequency-max: 345kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-5340; L5994A

ELECTRICAL CHARACTERISTICS (continued)
L5994 - L5994A
4/26
SECTION 2 PWM CONTROLLER
PWM CONTROLLERS CHARACTERISTICS
HIGH AND LOW SIDE GATE DRIVER (BOTH SECTIONS)
Symbol
V
V
V
V
I
I
V
19
19
I
25
32
f
V
5
8
8
V
V
Tuv
OSC
T
R
V
R
T
2out
,V
,I
,V
OH
-V
-V
ov
,I
,I
20
15
5
d
H
L
17
27
30
20
17
20
20
Over voltage threshold ON
V1SNS
Under voltage threshold ON
V1SNS
V2SNS feedback voltage
Overcurrent Threshold current
Pulse skipping mode threshold
voltage
Over voltage threshold ON
V2SNS
Under voltage threshold ON
V2SNS
Switching frequency accuracy
Voltage range for 300KHz
operation
Dead time
Over voltage propagation time
Under voltage propagation time
Output UVLO threshold latched
Soft start current
Soft start clamp voltage
Source output peak current
Sink output peak current
Rds
Rds
Output high voltage
ON
ON
resistance
resistance
Parameter
Vin = 5V to 20V
V1SNS to PWROK or
Respect output voltage
C
NOSKIP = REG5
V
V
V
OSC = 2.5V
OSC = GND OR 5V
HS rise
LS rise
V1SNS to PWROK or
V2SNS to PWROK
V2SNS to PWROK
C
Driver out high
Driver out low
HSTRAP = PREG5
I
HSOURCE = GND
source
i2sns
SOFT2
in
load
load
> 6.8V
-V
= 3.3nF
= 3.3nF
= 10mA;
v2sns
= 3.1V
Test Condition
= 0 to 40mA
1.566
1.843
1.451
Min.
2.09
1.66
255
170
2.4
3.2
4.4
65
37
1.496
Typ.
2.15
1.71
1.64
300
200
1.9
3.1
2.1
1.5
5.3
50
13
50
30
70
4
1
1
1.714
1.957
1.541
Max.
2.21
1.76
1.25
5.61
345
230
2.6
1.5
4.8
63
75
4
3
Ohm
Ohm
Unit
KHz
mV
mV
ns
%
V
V
V
V
V
V
V
A
A
V
A
s
s