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参数资料
| 型号： | LM25119PSQX |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 稳压器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, QCC32 |
| 封装： | 5 X 5 MM, LLP-32 |
| 文件页数： | 20/24页 |
| 文件大小： | 694K |
| 代理商： | LM25119PSQX |
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
VIN to AGND
-0.3 to 45V
SW1, SW2 to AGND
-3.0 to 45V
HB1 to SW1, HB2 to SW2
-0.3 to 15V
VCC1, VCC2 to AGND
-0.3 to 15V
FB1, FB2, DEMB, RES,
VCCDIS, UVLO to AGND
-0.3 to 15V
HO1 to SW1, HO2 to SW2
-0.3 to HB+0.3V
LO1, LO2 to AGND
-0.3 to VCC+0.3V
SS1, SS2 to AGND
-0.3 to 7V
EN2, RT to AGND
-0.3 to 7V
CS1, CS2, CSG1, CSG2 to
AGND
-0.3V to 0.3V
PGND to AGND
-0.3V to 0.3V
ESD Rating HBM (Note 3)
2kV
Storage Temperature
-55°C to +150°C
Junction Temperature
+150°C
Operating Ratings (Note 1)
VIN
4.5V to 42V
VCC
4.5V to 14V
HB to SW
4.5V to 14V
Junction Temperature
-40°C to +125°C
Note: COMP1, COMP2, RAMP1, and RAMP2 are output pins. As such they
are not specified to have an external voltage applied.
Electrical Characteristics Limits in standard type are for T
J = 25°C only; limits in boldface type apply over the
junction temperature range of -40°C to +125°C. Unless otherwise specified, the following conditions apply: VIN = 12V, VCC = 8V,
VCCDIS = 0V, EN2 = 5V, R
T = 25k, no load on LO and HO. Electrical characteristics are per channel where applicable. See
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VIN Supply
I
BIAS
VIN Operating Current
SS1 = SS2 = 0V
6
7.3
mA
VCCDIS = 2V, SS1 = SS2 = 0V
340
500
A
I
VCC
VCC1 Operating Current
VCCDIS = 2V, SS1 = SS2 = 0V
3.9
4.5
mA
VCC2 Operating Current
VCCDIS = 2V, SS1 = SS2 = 0V
1.4
2.0
mA
I
SHUTDOWN
VIN Shutdown Current
UVLO = 0V, SS1 = SS2 = 0V
15
33
A
VCC Regulator
V
CC(REG)
VCC Regulation
6.77
7.6
8.34
V
VCC Regulation
VIN = 4.5V, No external load
4.4
4.46
V
VCC Sourcing Current Limit
VCC = 0V
25
40
mA
VCCDIS Switch Threshold
VCCDIS Rising
1.19
1.25
1.29
V
VCCDIS Switch Hysteresis
0.07
V
VCCDIS Input Current
VCCDIS = 0V
-20
nA
VCC Under-voltage Threshold
Positive going VCC
3.8
4.0
4.2
V
VCC Under-voltage Hysteresis
0.2
V
EN2 Input
V
IL
EN2 Input Low Threshold
2.0
1.5
V
IH
EN2 Input High Threshold
2.9
2.5
V
EN2 Input pull-up resistor
50
k
UVLO
UVLO Threshold
UVLO Rising
1.20
1.25
1.29
V
UVLO Hysterisis Current
UVLO = 1.4V
15
20
25
A
UVLO Shutdown Threshold
0.4
V
UVLO Shutdown Hysterisis Voltage
0.1
V
Soft Start
SS Current Source
SS = 0V
7
10
13
A
SS Pull Down R
DSON
10
5
www.national.com
LM25119
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