L5970 STMICROELECTRONICS [STMicroelectronics], L5970 Datasheet - Page 3

• Manufacturer Part Number: L5970
• Description: UP TO 1A STEP DOWN SWITCHING REGULATOR
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

ELECTRICAL CHARACTERISTCS (Tj = 25°C, V
(*) Specification Referred to T
Note (1): Specification over the -40 to +125 Tj Temperature range are assured by design, characterization and statistical correlation.
Note (2): Guaranteed by design.
DYNAMIC CHARACTERISTICS (see test circuit fig. xx note 1).
DC CHARACTERISTICS
INHIBIT
ERROR AMPLIFIER
SYNC FUNCTION
REFERENCE SECTION
Symbol
I
o source
I
I
V
V
qst-by
o sink
V
I
gm
V
V
qop
fs
I
I
CC
I
OH
OL
q
b
l
d
5
Operating input voltage
range
Dropout voltage
Maximum limiting current
Switching frequency
Duty cycle
Voltage feedback
Efficiency
Total operating quiescent
current
Quiescent current
Total stand-by quiescent
current
INH Threshold voltage
High level output voltage
Low level output voltage
Source output current
Sink output current
Source bias current
DC open loop gain
Transconductance
High Input Voltage
Low Input Voltage
Slave Sink Current
Master Output Amplitude
Output Pulse Width
Reference Voltage
Line Regulation
Load Regulation
Short Circuit Current
Parameter
j
from -40 to +125°C (1).
V
V
V
4.4V < V
20mA < I
V
Duty Cycle = 0; VFB = 1.5V
V
V
Device ON
Device OFF
V
V
V
V
R
I
V
V
V
V
V
I
no load, V
I
V
I
V
I
comp
source
REF
REF
REF
o
CC
CC
O
inh
CC
FB
FB
COMP
comp
comp
CC
CC
sync
sync
CC
CC
L
= 1.235V; I
=
= 5V, V
= 1V
= 1.5V
> 2.2V
= 4.4V; I
= 4.4V to 36V
= 36V; V
= 4.4V to 36V
= 4.4V to 36V
= 0 to 5mA
= 4.4V to 36V
= 0mA
= 4.4V to 36V
= 0 to 5mA
= -0.1mA to 0.1mA
= 0.74V
= 2.33V
= 1.9V; V
= 1.9V
= 3mA
Test Condition
= 1.9V; V
CC
O
sync
CC
< 1A
< 36V,
o
inh
CC
= 12V
o
(2)
= 1.65V
= 1A
= 1A
FB
> 2.2V
FB
= 12V, unless otherwise specified.)
= 1.5V
= 1V
*
*
*
*
*
*
*
*
*
1.220
1.198
3.234
Min.
0.21
2.75
0.20
0.11
212
225
200
4.4
1.5
2.2
3.5
2.5
3.2
50
10
0
1
1.235
1.235
Typ.
0.25
1.87
0.35
250
250
300
1.5
2.5
2.3
3.3
3.3
90
50
80
65
3
3
5
8
8
1.272
3.366
3.399
Max.
V
2.25
1.25
0.74
0.25
0.45
280
275
100
100
150
0.5
0.8
0.4
2.5
36
10
15
30
REF
5
4
L5970D
Unit
KHz
KHz
mA
mA
mA
mS
mA
mA
mV
mV
mA
dB
%
%
V
V
A
V
V
V
V
V
V
V
V
V
V
V
A
A
A
A
s
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