5.0A, 150kHz, Step-down Switching Regulator
Electrical Characteristics
LM1501A
Unless otherwise specified, T
J
=25℃ V
IN
= 12V for the 3.3V, 5V, and Adjustable version and V
IN
= 24V for the 12V
version. I
LOAD
= 500mA.
Characteristic
Symbol
Test Condition
LM1501A -ADJ
Min
Typ
73
73
80
90
Max
Unit
V
oUT
= 3V, I
LOAD
= 5A
V
IN
= 12V, I
LOAD
= 5A
V
IN
= 12V, I
LOAD
= 5A
V
IN
= 25V, I
LOAD
= 5A
4.75V
≤
V
IN
≤
40V
0.2A
≤
I
LOAD
≤
5A
7V
≤
V
IN
≤
40V
0.2A
≤
I
LOAD
≤
5A
15V
≤
V
IN
≤
40V
0.2A
≤
I
LOAD
≤
5A
4.5V
≤
V
IN
≤
40V
0.2A
≤
I
LOAD
≤
5A
V
OUT
programmed for 3V
3.20
4.85
11.64
Efficiency
η
LM1501A-3.3
LM1501A-5
LM1501A-12
LM1501A-3.3
%
3.3
5.0
12.0
3.40
5.15
12.36
V
Output Voltage
V
OUT
LM1501A-5
LM1501A-12
Feedback Voltage
Oscillator Frequency
Feedback
Current
Bias
V
FB
f
O
I
D
V
SAT
DC
LM1501A-ADJ
1.180
127
1.215
150
15
1.250
173
50
1.4
V
kHz
LM1501A-ADJ; V
FB
=1.215V
I
OUT
= 5A (Note 2,3)
(Note 3)
(Note 4)
Peak Current (Note 2,3)
Output = 0V
Output = -1V, V
IN
=40V
(Note 4)
ON/OFF pin = 5V(OFF), V
IN
= 40V
Saturation Voltage
Max Duty Cycle (ON)
Max Duty Cycle (OFF)
Current Limit
Output
Leakage Current
Quiescent Current
Standby
Quiescent Current
ON/OFF Pin
Logic Input
Threshold voltage
ON/OFF Pin
Logic Input current
V
%
100
0
6.5
50
2
4.5
80
1.3
30
10
200
I
CL
A
μA
mA
mA
μA
I
L
I
Q
I
STBY
V
IH
V
IL
I
H
I
L
Low(Regulator ON)
High (Regulator OFF)
V
LOGIC
= 2.5V (regulator OFF)
V
LOGIC
= 0.5V (regulator ON)
2.0
5
0.6
V
15
5
uA
Note 2. No elements connected to output pin
Note 3. Feedback pin removed from output and connected to 0V to force the output transistor switch ON.
Note 4. Feedback pin removed from output and connected to 12V for the 3.3V, 5V, and the A version, and 15V for the 12V version. To force the
output transistor switch OFF
Mar. 2011 – Ver. 1.3
3
HTC
HTC [ HTC KOREA TAEJIN TECHNOLOGY CO. ]
