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L4955 数据表(PDF) 4 Page - STMicroelectronics

部件名 L4955
功能描述  5A ULDO LINEAR REGULATORS FAMILY
PDF  14 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L4955 数据表(HTML) 4 Page - STMicroelectronics

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L4955V5.1 - ELECTRICAL CHARACTERISTICS (Tj =25
°C, Vin = 8V, unless otherwise specified)
• = Specificationsreferred to T
J from 0
°C to +125°C.
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VIN
Operating Input Voltage
VO+VD
22
V
VO
Output Voltage
6.75V < VIN < 15V; 0.1A < IO < 5A
5.000
5.100
5.200
V
6.75V < VIN < 15V; 0.1A < IO <5A
• 4.950 5.100 5.250
V
VD
Drop-out Voltage
IO = 5A
0.75
1.1
V
•
1.1
1.5
V
IO =2A
•
0.55
0.75
V
∆VO
Line regulation
6.5V < VIN <15V; IO = 10mA
2
10
mV
∆VO
Load regulation
0.1A < IO < 5A
5
20
mV
IO
Current Limiting
•
5.1
6.3
7.5
A
Short Circuit Current
VO =0V
•
1.8
A
IQ
Quiescent Current
0.1A < IO <5A
2
3
mA
Ripple Rejection
f = 120Hz, IO =5A
VIN =8V
∆VIN =2VPP
55
65
dB
L4955V3.3 - ELECTRICAL CHARACTERISTICS (Tj =25
°C, Vin = 5V, unless otherwise specified)
• = Specificationsreferred to TJ from 0°C to +125°C.
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
VIN
Operating Input Voltage
4.5
22
V
VO
Output Voltage
4.75V < VIN < 12V; 0.1A < IO < 5A
3.234
3.300
3.366
V
4.75V < VIN < 12V; 0.1A < IO <5A
• 3.201 3.300 3.399
V
∆VO
Line regulation
4.5V < VIN <12V; IO = 10mA
2
10
mV
∆VO
Load regulation
0.1A < IO < 5A
3
15
mV
IO
Current Limiting
•
5.1
6.3
7.5
A
Short Circuit Current
VO =0V
•
1.8
A
IQ
Quiescent Current
0.1A < IO <5A
2
3
mA
Ripple Rejection
f = 120Hz, IO =5A
VIN =6V
∆VIN =2VPP
57
70
dB
L4955
4/14



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