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参数资料
| 型号： | L5994A |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A DUAL SWITCHING CONTROLLER, 345 kHz SWITCHING FREQ-MAX, PQFP32 |
| 封装： | TQFP-32 |
| 文件页数： | 22/26页 |
| 文件大小： | 322K |
| 代理商： | L5994A |
Obsolete
Product(s)
- Obsolete
Product(s)
5/26
L5994 - L5994A
VOL
Output low voltage
HSTRAP = PREG5
Isource = 10mA;
HSOURCE = GND
0.5
V
LINEAR REGULATOR DRIVER SECTION
Imax
Driver current
VFBLIN < 2.5V
30
mA
Vref
VFBLIN threshold
VDRLIN = 15V
2.44
2.5
2.56
V
VDRLIN
Input voltage range
4.5
20
V
IFBLIN
Bias Current
2
A
VCP
Input voltage clamp
Iclamp = 100A16
V
“One Shot” activation
threshold (L5994A only)
VDRLIN falling
12.88
13.7
14.52
V
“One Shot” Pulse (L5994A only)
1.5
s
INTERNAL REGULATOR DRIVER SECTION
V29
VREG5 output voltage
Vin = 7 to 25V
5.0
5.3
5.5
V
I29
Totale current capability
VPREG5 = 5.3V
Vin = 7V
25
70
mA
V5SW
Swith-over threshold voltage
Vin > 7V, V5SW fall
4.2
4.53
4.8
V
V12
Reference voltage
Iload = 1mA
Vin = 5 to 20V
Iload = 1 to 5mA
2.45
2.425
2.5
2.55
2.575
V
I12
Source current at reference
voltage
V12 = Vref-0.3V
15
mA
POWER GOOD AND ENABLE FUNCTION
V16,V11
RUN1, RUN2, enable voltage
High level
2.4
V
V16,V11
RUN1, RUN2, disable voltage
Low level
0.8
V
T10
Power good delay
CRST=100nF
115
147
180
ms
T27,T30
Shutdown delay time before LS
activation (except for over voltage
fault)
CRST=100nF
115
147
180
ms
CRST timing rate
V12 = Vref-0.3V
1.47
ms/nF
Power good high level
IPOWEROK = 40A
4.1
V
Power good low level
IPOWEROK = 320A
0.4
V
SYNCHRONIZATION
V15
Synchronization pulse width
Fsw = 1MHz
400
ns
Synchronization input voltage
(falling edge)
IPOWEROK = 320A5
V
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
ELECTRICAL CHARACTERISTICS (continued)
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