L4970 STMicroelectronics, L4970 Datasheet - Page 7

• Manufacturer Part Number: L4970
• Description: 10A SWITCHING REGULATOR
• Manufacturer: STMicroelectronics

ELECTRICAL CHARACTERISTICS (continued)
DC CHARACTERISTICS
SOFT START
ERROR AMPLIFIER
RAMP GENERATOR (pin 2)
SYNC FUNCTION (pin 13)
Symbol
Symbol
Symbol
Symbol
Symbol
V
SVR
V
V
V
I
V
V
I
I
V
V
I
I
V
9 Hyst
I
9OQ
G
I
I
10 H
I
V
V
13 H
10L
13L
t
9Q
I
I
10H
9o n
7L
12
10 L
11
OS
W
12
2
2
13
13
13
2
2
V
Turn-on Threshold
Turn-off Hysteresys
Quiescent Current
Operating Supply Current
Out Leak Current
Soft Start Source Current
Output Saturation Voltage
High Level Out Voltage
Low Level Out Voltage
Source Output Current
Sink Output Current
Input Bias Current
DC Open Loop Gain
Supply Voltage Rejection
Input Offset Voltage
Ramp Valley
Ramp Peak
Min. Ramp Current
Max. Ramp Current
Low Input Voltage
High Input voltage
Sync Input Current with
Low Input Voltage
Input Current with High
Input Voltage
Output Amplitude
Output Pulse Width
Parameter
Parameter
Parameter
Parameter
Parameter
V
V
V
V
I
I
I
V
I
V
V
V
V
V
R
V
R
15 < V
R
R
S1 = C; S2 = B
S1 = C;
S2 = B;
S1 = A; I
S1 = A; I1 = 1mA
V
S1 = C; S2 = B; S4 = B
V
S1 = C; S2 = B; S4 = B
V
S1 = C; S2 = B
V
S1 = C; S2 = B
V
12
12
10
10
12
12
i
12
11
11
10
11
10
11
VCM
i
12
13
13
thr
S
S
S
S
= 55V; S3 = A; V
= 15V to 50V; V
= 20mA; V
= 200 A; V
= -100 A; S1 = C
= +100 A; S1 = C
= 10K
= 10
= 10
= 50
= 0; S1 = D
= 0; S1 = C; S2 = B
= 3V; V
= 4.7V
= 5.3V;
= 1V; S1 = E
= 4.7V
= 6V; S1 = D
= 5.3V
= 0;
= V
= 3.5V; S4 = A;
= 2.5V
Test Condition
Test Condition
Test Condition
Test Condition
Test Condition
= 4V;
i
< 50V;
2
1
= 0.9V; S4 = A;
= 100 A
11
9
9
= 0V
= 10V
= 10V
V
V
12
i
i
= 15V
12
= 45V
= 0;
= 0
Min.
Min.
Min.
Min.
Min.
–0.3
100
100
1.2
2.4
3.5
0.3
10
70
60
60
6
4
Typ.
Typ.
Typ.
Typ.
Typ.
100
150
150
270
0.4
1.5
2.5
5.5
2.7
0.5
11
13
16
80
1
2
5
Max.
Max.
Max.
Max.
Max.
130
300
0.7
1.2
0.9
5.5
0.4
0.8
12
19
23
10
2
1
3
2
Unit
Unit
Unit
Unit
Unit
mA
mA
mA
mV
mA
mA
mA
dB
dB
V
V
V
V
V
V
V
V
V
V
V
V
A
A
A
A
A
s
L4970A
Fig.
Fig.
Fig.
Fig.
Fig.
7A
7A
7A
7A
7A
7B
7B
7B
7C
7C
7C
7C
7A
7A
7A
7A
7A
7A
7A
7A
7A
–
–
–
–
–
–
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