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L4946 数据表(PDF) 4 Page - STMicroelectronics

部件名 L4946
功能描述  QUAD VOLTAGE REGULATOR WITH INHIBIT AND RESET
PDF  9 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L4946 数据表(HTML) 4 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
Ripple rejection
fO =120-10KHz; 1VppAC ; VS =14V
IO1 = 90mA; IO2 = 125mA;
IO3 = 75mA; IO4 = 50mA;
50
dB
fO = 20-20KHz; 1VppAC ; VS =14V
IO1 = 90mA; IO2 = 125mA;
IO3 = 75mA; IO4 = 50mA;
50
dB
∆VO2
Line Regulation
∆VO2 across VS range
VS = 10.5V to 26V
40
mV
Output Noise (design only)
Check output for AC noise
using A weighted filter (20-
20KHz)
200
µV
Check output for AC noise
using 100kHz LP (20-100KHz)
400
µV
VO3
Output Voltage
IO3 =200mA; Tamb =25
°C;
all temps
4.85
4.75
5
5
5.15
5.25
V
V
∆VO3
Line Regulation
VS = 7V to 26V
40
mV
∆VO3
Load Regulation
IO3 = 5 to 200mA
100
mV
∆IQ
Quiescent Current (
∆IS)VS = 14V; IO3 = 5mA;
VS = 14V; IO3 = 200mA;
10
25
mA
mA
VS-VO3
Dropout Voltage
IO3 = 200mA
Tamb =25
°C;
all temps
400
600
mV
mV
IO3 = 5mA
set VS =VO3+0.3V; Tamb =25
°C;
set VS =VO3+0.4V;all
400
500
mV
mV
IL
Current Limit note 1
VO3 = 0V
240
480
mA
VO3
Max Bat.Trans.
RO = 100
Ω
Ramp VS from 14 to 60V in 3-5ms
6
V
Hold VS at 60V for 10ms
Ramp VS from60 to 14V in 3-5ms;
Tamb =25
°C;
all temps
4.85
4.75
5
5
2
5.15
5.25
V
V
V
VO3
Rev. Voltage Trans.
VS = -35V; t < 1ms; RO = 100
Ω
Check VO3, standard Tamb =25
°C;
all temps
4.85
4.75
5
5
5.15
5.25
V
V
VO3
Rev. Voltage .
VS = -15V; RO = 100
Ω
-0.4
1
V
Ripple rejection
fO =120-10KHz; 1VppAC ; VS =14V
IO1 = 90mA; IO2 = 125mA;
IO3 = 75mA; IO4 = 50mA;
50
dB
fO = 10KHz; 1VppAC ; VS =14V
50
dB
Output Noise
Check Output for AC noise
using a 100KHz LP filter
Check Output for AC noise
using an A weighted filter (20-
20KHz)
400
200
µV
µV
VO4
Output Voltage
IO4 = 100mA; Tamb =25
°C;
all temps
4.85
4.75
5
5
5.15
5.25
V
V
∆VO4
Line Regulation
VS = 7V to 26V
40
mV
∆VO4
Load Regulation
IO4 = 0.5 to 100mA
80
mV
∆IQ
Quiescent Current
VS = 14V; IO4 = 2mA;
VS = 14V; IO4 = 100mA;
500
20
µA
mA
VS-VO4
Dropout Voltage
IO4 = 100mA
Tamb =25
°C
all temps
400
600
mV
mV
ΙL
Current Limit (note 1)
VO4 = 0V
120
300
mA
L4946
4/9



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