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L4960 数据表(PDF) 3 Page - STMicroelectronics

部件名 L4960
功能描述  2.5A POWER SWITCHING REGULATOR
PDF  16 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L4960 数据表(HTML) 3 Page - STMicroelectronics

  L4960 Datasheet HTML 1Page - STMicroelectronics L4960 Datasheet HTML 2Page - STMicroelectronics L4960 Datasheet HTML 3Page - STMicroelectronics L4960 Datasheet HTML 4Page - STMicroelectronics L4960 Datasheet HTML 5Page - STMicroelectronics L4960 Datasheet HTML 6Page - STMicroelectronics L4960 Datasheet HTML 7Page - STMicroelectronics L4960 Datasheet HTML 8Page - STMicroelectronics L4960 Datasheet HTML 9Page - STMicroelectronics Next Button
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Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
DYNAMIC CHARACTERISTICS
Vo
Output voltage range
Vi = 46V
Io =1A
Vref
40
V
Vi
Input voltage range
Vo =Vref to 36V
Io = 2.5A
9
46
V
∆ Vo
Line regulation
Vi = 10V to 40V
Vo =Vref
Io =1A
15
50
mV
∆ Vo
Load regulation
Vo =Vref
Io = 0.5A to 2A
10
30
mV
Vref
Internal reference voltage
(pin 2)
Vi = 9V to 46V
Io = 1A
5
5.1
5.2
V
∆ Vref
∆ T
Average temperature
coefficient of refer voltage
Tj =0
°C to 125°C
Io =1A
0.4
mV/
°C
Vd
Dropout voltage
Io = 2A
1.4
3
V
Iom
Maximum operating load
current
Vi = 9V to 46V
Vo =Vref to 36V
2.5
A
I7L
Current limiting threshold
(pin 7)
Vi = 9V to 46V
Vo =Vref to 36V
3
4.5
A
ISH
Input average current
Vi = 46V;
output short-circuit
30
60
mA
η
Efficiency
f = 100KHz
Vo =Vref
75
%
Io =2A
Vo = 12V
85
%
SVR
Supply voltage ripple
rejection
∆ Vi =2Vrms
fripple = 100Hz
Vo =Vref
Io = 1A
50
56
dB
f
Switching frequency
85
100
115
KHz
∆ f
∆ Vi
Voltage stability of
switching frequency
Vi = 9V to 46V
0.5
%
∆ f
∆ Tj
Temperature stability of
switching frequency
Tj =0
°C to 125°C1
%
fmax
Maximum operating
switching frequency
Vo =Vref
Io = 2A
120
150
KHz
Tsd
Thermal shutdown
junction temperature
150
°C
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, Tj =25
°C, Vi = 35V, unless otherwise
specified)
Symbol
Parameter
Value
Unit
Rth j-case
Thermal resistance junction-case
max
4
°C/W
Rth j-amb
Thermal resistance junction-ambient
max
50
°C/W
THERMAL DATA
3/16
L4960



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