L5972D STMicroelectronics, L5972D Datasheet - Page 5

• Manufacturer Part Number: L5972D
• Description: IC REG SW 2A STEP-DOWN 8-SOIC
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L5972D

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.24 ~ 35 V
• Current - Output: 2A
• Frequency - Switching: 250kHz
• Voltage - Input: 4.4 ~ 36 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Power - Output: 1.2W
• Output Voltage: 35 V
• Output Current: 2 A
• Input Voltage: 4.4 V to 36 V
• Switching Frequency: 212 KHz to 280 KHz
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Duty Cycle (max): 100 %
• Low Dropout Operation: 100% duty cycle
• For Use With: 497-4741 - BOARD EVAL FOR L5972D SW REG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

L5972D
3
Electrical characteristics
Table 4.
1. Specification Referred to T
Dynamic characteristics (see test circuit ).
DC characteristics
Error amplfier
are assured by design, characterization and statistical correlation.
Symbol
R
I
o source
I
V
V
DS(on)
o sink
I
V
gm
V
qop
f
I
I
h
OH
CC
I
OL
s
q
b
l
5
Electrical characteristics ( T
Operating input
voltage range
Mosfet on
Resistance
Maximum limiting
current
Switching frequency
Duty cycle
Voltage feedback
Efficiency
Total operating
quiescent current
Quiescent current
High level output
voltage
Low level output
voltage
Source output
current
Sink output current
Source bias current
DC open loop gain
Transconductance
Parameter
J
from -40 to 125°C. Specification over the -40 to +125 T
V
V
4.4V < V
20mA < I
V
Duty cycle = 0;
V
V
V
V
V
V
V
R
I
0.1mA
V
comp
o
CC
O
FB
FB
FB
COMP
FB
COMP
FB
COMP
L
= 1.235V; I
= ∞
= 5V, V
= 1V
= 1.5V
= 1.5V
= 1V
= 1.5V
= 4.4V to 36V
= -0.1mA to
Test condition
= 1.9V;
= 1.9V;
= 1.9V
J
CC
O
= 25°C, V
CC
< 2A
< 36V,
o
= 12V
= 2A
CC
= 12V, unless otherwise specified)
(1)
(1)
(1)
(1)
(1)
1.220 1.235
1.198 1.235 1.272
Min
212
225
200
4.4
3.5
50
Electrical characteristics
2
0
1
J
0.250
Typ
250
250
300
Temperature range
2.5
1.5
2.5
2.3
90
65
3
Max
1.25
280
275
100
0.5
2.5
0.4
36
3
5
4
Unit
kHz
kHz
mA
mA
mA
mS
µA
µA
dB
%
%
Ω
V
A
V
V
V
V
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