l4962eh STMicroelectronics, l4962eh Datasheet - Page 3

• Manufacturer Part Number: l4962eh
• Description: 1.5a Power Switching Regulator
• Manufacturer: STMicroelectronics

PIN FUNCTIONS (cont’d)
ELECTRICAL CHARACTERISTICS (Refer to the test circuit, T
specified)
DYNAMIC CHARACTERISTICS
Symbol
HEPTAWATT
4
5
6
7
SVR
V
I
I
V
V
I
V
om
SH
V
2L
V
V
ref
o
T
d
i
ref
o
o
Output voltage range
Input voltage range
Line regulation
Load regulation
Internal reference voltage
(pin 10)
Average temperature
coefficient of refer. voltage
Dropout voltage
Maximum operating load
current
Current limiting threshold
(pin 2)
Input average current
Efficiency
Supply voltage ripple
rejection
POWERDIP
Parameter
4, 5, 12, 13
8, 9, 16
1, 3, 6,
14
15
2
NAME
GROUND
OSCILLATOR
SOFT START
OUTPUT
V
V
V
V
V
T
I
I
V
V
V
V
V
f = 100KHz
I
fripple
V
o
o
o
j
i
o
i
o
i
i
o
i
o
i
o
V
= 1A
= 1.5A
= 1A
= 0 C to 125 C
= 46V
= 10V to 40V
= 9V to 46V
= 9V to 46V
= 9V to 46V
= 46V;
= V
= V
= V
= V
= V
i
= 2V
= 100Hz
ref
ref
ref
ref
ref
to 36V
to 36V
to 36V
rms
Test Conditions
output short-circuit
V
o
= V
I
I
I
I
V
V
Io = 1A
o
o
o
o
Common ground terminal.
A parallel RC network connected to this terminal
determines the switching frequency. This pin must be
connected to pin 7 input when the internal oscillator is
used.
Soft start time constant. A capacitor is connected
between this terminal and ground to define the soft start
time constant. This capacitor also determines the
average short circuit output current.
Regulator output.
N.C.
o
o
ref
= 1A
= 1.5A
= 0.5A to 1.5A
= 1A
= V
= 12V
ref
I
o
= 1A
j
= 25 C, V
FUNCTION
Min.
V
1.5
50
9
5
2
ref
i
= 35V, unless otherwise
Typ.
5.1
0.4
1.5
15
15
70
80
56
8
Max.
5.2
3.3
40
46
50
20
30
2
L4962
mV/ C
Unit
mV
mV
mA
dB
%
%
V
V
V
V
A
A
3/16