L4970 STMicroelectronics, L4970 Datasheet - Page 6

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

L4970A
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, T
C
DYNAMIC CHARACTERISTICS
V
V
6/21
9
ref
START
Symbol
Symbol
Symbol
I
I
= 2.2nF, f
14 short
15 short
SVR
f
SECTION (pin 14)
V
V
V
V
I
max
V
V
V
V
V
T
V
V
7L
V
f
14
15
V
T
o
d
i
j
14
14
15
15
f
f
o
o
14
i
SECTION (pin 15)
SW
input Voltage Range (pin 9)
Output Votage
Line Regulation
Load Regulation
Dropout Voltage Between
Pin 9 and 7
Max. Limiting Current
Efficiency
Supply Voltage Ripple
Reject.
Switching Frequency
Voltage Stability of
Swiching Frequency
Temperature Stability of
Swiching Frequency
Maximum Operating
Switching Frequency
Reference Voltage
Line Regulation
Load Regulation
Average Temperature
Coefficient Reference
Voltage
Short Circuit Current Limit
Reference Voltage
Line Regulation
Load Regulation
Short Circuit Current Limit
= 200KHz typ, unless otherwise specified)
Parameter
Parameter
Parameter
V
I
V
I
V
I
V
I
I
I
I
V
I
V
V
I
V
V
V
f = 100Hz; V
V
T
V
I
V
I
T
V
V
I
V
o
o
o
o
o
o
o
o
o
o
14
15
j
j
o
i
i
o
i
o
o
o
o
i
i
o
i
14
i
15
= 10A
= 5A; V
= 5A; V
= 3A to 6A
= 2A to 10A
= 5A
= 10A
= 5A
= 10A
= 10A; C
= 0 to 125 C
= 0 C to 125 C
= 15V to 50V
= 15V to 50V
= 15 to 50V
= 2VRMS; I
= 15V to 45V
= 15V to 50V
= 15 to 50V
= V
= V
= V
= 12V
= V
= 12V
= V
= 0 to 1mA
= 0 to 1mA
= 0
= 0V
Test Condition
Test Condition
Test Condition
ref
ref
ref
ref
ref
; R
to 40V
o
o
9
= V
= V
4
o
= 1nF
= 10K
o
= V
re
re
= 5A
f
f
ref
j
= 25 C, V
Min.
Min.
Min.
11.4
180
500
15
11
80
75
56
5
5
Typ.
Typ.
Typ.
0.55
200
5.1
1.1
5.1
0.4
0.6
12
10
20
13
85
92
80
87
60
10
20
70
12
50
80
i
2
1
= 35V, R
Max.
Max.
Max.
12.6
220
200
5.2
0.8
1.6
5.2
1.4
50
30
30
50
15
25
40
6
4
= 16K ,
mV/ C
Unit
Unit
Unit
KHz
KHz
mV
mV
mV
mV
mV
mA
mV
mA
dB
%
%
%
%
%
%
V
V
V
V
A
V
V
V
Fig.
Fig.
Fig.
5
5
5
5
5
5
5
5
5
5
5
5
5
7
7
7
7
7
7
7
7
7