L4970 STMicroelectronics, L4970 Datasheet - Page 8

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

L4970A
ELECTRICAL CHARACTERISTICS (continued)
RESET AND POWER FAIL FUNCTIONS
Figure 5: Test and Evaluation Board Circuit
TYPICAL PERFORMANCES (using evaluation board) :
n = 83% (V
V
Line regulation = 5mV (V
Load regulation = 15mV (I
For component values, refer to test circuit part list.
8/21
o RIPPLE
Symbol
–I
V
V
V
V
V
V
V
I
5SI
I
I
11R
11F
5SO
5H
5L
4S
4
3R
3H
3
= 30mV (at 10A) with output filter capacitor ESR
i
= 35V ; V
Rising Threshold Voltage
(pin 11)
Falling Threshold Voltage
(pin 11)
Delay High Threshold
Voltage
Delay Low Threshold
Voltage
Delay Source Current
Delay Sink Current
Out Saturation Voltage
Output Leak Current
Rising Threshold Voltage
Hysteresys
Input Bias Current
Parameter
o
= V
i
= 15 to 50V)
o
REF
= 2 to 10A)
; I
o
= 10A ; f
V
V
Vi = 15 to 50V
V
V
V
Vi = 15 to 50V
V
V
V
I
V
V
V
V
4
i
3
3
i
14
14
3
3
3
4
3
11
= 15mA; S1 = B
= 15 to 50V
= 15 to 50V
= 5.3V
= 5.3V
= 5.3V; V
= 4.7V; V
= 4.7V
= 50V; S1 = A
= 5.3V
= V
= V
= V
Test Condition
SW
14
11
11
= 200KHz)
5
5
= 3V
= 3V
V
V
3
3
= 5.3V
= 5.3V
60m
–120
Min.
4.77
4.95
4.95
V
0.4
40
10
1
ref
Typ.
–100
–200
V
V
5.1
1.1
5.1
0.5
60
1
ref
ref
Max.
–160
5.25
5.25
V
–80
V
100
1.2
0.4
0.6
80
3
ref
ref
Unit
mV
mV
mA
V
V
V
V
V
V
V
A
A
A
Fig.
7D
7D
7D
7D
7D
7D
7D
7D
7D
7D
7D