L5994A STMicroelectronics, L5994A Datasheet - Page 5

• 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)
LINEAR REGULATOR DRIVER SECTION
INTERNAL REGULATOR DRIVER SECTION
POWER GOOD AND ENABLE FUNCTION
SYNCHRONIZATION
Symbol
V
V
T
V
I
V
16
16
27
FBLIN
I
DRLIN
V
V
V
V
V
T
V
max
I
I
5SW
29
12
OL
CP
,V
,V
10
,T
ref
29
12
15
30
11
11
Output low voltage
Driver current
VFBLIN threshold
Input voltage range
Bias Current
Input voltage clamp
“One Shot” activation
threshold (L5994A only)
“One Shot” Pulse (L5994A only)
VREG5 output voltage
Totale current capability
Swith-over threshold voltage
Reference voltage
Source current at reference
voltage
RUN1, RUN2, enable voltage
RUN1, RUN2, disable voltage
Power good delay
Shutdown delay time before LS
activation (except for over voltage
fault)
CRST timing rate
Power good high level
Power good low level
Synchronization pulse width
Synchronization input voltage
(falling edge)
Parameter
V
I
High level
I
Fsw = 1MHz
HSTRAP = PREG5
I
HSOURCE = GND
VFBLIN < 2.5V
VDRLIN = 15V
I
VDRLIN falling
V
V
V
V
I
V
Low level
CRST=100nF
CRST=100nF
V
I
I
source
clamp
load
load
POWEROK
POWEROK
POWEROK
in
PREG5
in
in
in
12
12
= 7 to 25V
= 7V
> 7V, V
= 5 to 20V
= Vref-0.3V
= Vref-0.3V
= 1mA
= 1 to 5mA
= 100 A
= 10mA;
= 5.3V
Test Condition
= 40 A
= 320 A
= 320 A
5SW
fall
12.88
2.425
Min.
2.44
2.45
115
115
400
4.5
5.0
4.2
2.4
4.1
16
25
70
5
Typ.
13.7
4.53
1.47
147
147
2.5
5.3
2.5
2.5
L5994 - L5994A
14.52
2.575
Max.
2.56
2.55
180
180
0.5
1.5
5.5
4.8
0.8
0.4
30
20
15
2
ms/nF
Unit
mA
mA
mA
ms
ms
ns
V
V
V
V
V
V
V
V
V
V
V
V
V
A
s
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