CM2593/P
2A Step Down VOLTAGE REGULATOR
ELECTRICAL CHARACTERISTICS(All
Output Voltage Versions)
Unless otherwise specified, V
IN
=12V for 3.3V, 5V, adjustable version and V
IN
=24V for the 12V version. I
LOAD
= 0.2A
Symbol
I
B
B
Parameter
Feedback bias current
Conditions
V
FB
=1.3V
(Adjustable version only)
T
J
=25℃
-40℃<=T
J
<=125℃
Min.
Typ.
-10
Max.
-50
-100
173
Unit
nA
127
110
150
150
30
F
OSC
oscillator frequency
Khz
173
60
1.4
1.15
1.5
V
Khz
Fscp
Oscillator frequency of short When current limit occurred
circuit protect
and V
FB
<0.55V
I
OUT
=1.5A
V
SAT
saturation voltage
no outside circuit
V
FB
=0V force driver on
DC
Max. Duty Cycle(ON)
Min. Duty cycle(OFF)
V
FB
=0V force driver on
V
FB
=12V force driver off
peak current
100
0
3.3
2.4
2.8
3.6
%
I
CL
current limit
no outside circuit
V
FB
=0 force driver on
A
I
L
Output = 0
Output = 1
no outside circuit
Output leakage
V
FB
=12 force driver off
current
V
IN
=24V
V
FB
=12 force driver off
ON/OFF pin=5V
V
IN
=24V
Low (regulator ON)
-
2.0
1.3
-200
-5
5
70
10
150
200
0.6
-
uA
mA
mA
uA
I
Q
I
STBY
V
IL
V
IH
Quiescent Current
Standby Quiescent
Current
ON/OFF pin logic input
threshold voltage
ON/OFF pin logic
input current
ON/OFF pin input current
Over temperature shutdown
threshold
High (regulator OFF)
V
I
H
I
L
Ts
V
LOGIC
=2.5V (OFF)
V
LOGIC
=0.5V (ON)
Tj increasing
Tj decreasing
-0.1
175
150
-0.01
-1
uA
o
C
2007/01/25
Rev. 1.4
Champion Microelectronic Corporation
Page 4
CHAMP [ CHAMPION MICROELECTRONIC CORP. ]
