Copyright © 2005 ADD Microtech Corp.
4
AMC2596_A (LF) May 2005
AMC2596
RECOMMENDED OPERATING CONDITIONS
Temperature Range
-40°C≦TJ≦+125°C
Supply Voltage
4.5V to 40V
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, these specifications apply VIN = 12V, ILOAD = 0.5A and the operating ambient temperatures TJ = 25°C.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Output Voltage
VOUT
4.75V ≤ VIN ≤ 40V, 0.2A ≤ ILOAD ≤ 3A
3.168
3.3
3.342
V
Efficiency
AMC2596-3.3
η
VIN = 12V, ILOAD = 3A (Note 3)
73
%
Output Voltage
VOUT
7V ≤ VIN ≤ 40V, 0.2A ≤ ILOAD ≤ 3A
4.800
5.0
5.200
V
Efficiency
AMC2596-5.0
η
VIN = 12V, ILOAD = 3A (Note 3)
80
%
Feedback Voltage
VFB
4.5V ≤ VIN ≤ 40V, 0.2A ≤ ILOAD ≤ 3A
1.193 1.230 1.267
V
Efficiency
AMC2596-ADJ
η
VIN = 12V, ILOAD = 3A (Note 3)
73
%
Feedback Bias Current
Ib
Adjustable Version Only, VFB =1.3V
10
50
nA
Oscillator Frequency
fOSC
(Note 4)
127
150
173
KHz
Saturation Voltage
VSAT
IOUT = 3A (Note 5,6)
1.16
1.4
V
Max Duty Cycle (ON)
100
Min Duty Cycle (OFF)
DC
(Note 8,9)
0
%
Current Limit
ILIMIT
Peak Current (Note 5,6)
3.6
4.5
6.9
A
Output = 0V (Note 5,7)
50
µA
Output Leakage Current
ILEAK
Output = -1V (Note 8)
2
30
mA
Quiescent Current
IQ
(Note 9)
5
10
mA
Standby Current
ISTBY
ENABLE pin=5V (OFF) (Note 8)
80
200
µA
VIH
Low(Regulator ON)
0.6
V
ENABLE Pin Threshold Voltage
VIL
High(Regulator OFF)
2.0
IH
VLOGIC=2.5V(Regulator OFF)
5
15
µA
ENABLE Pin Input Current
IL
VLOGIC=0.5V(Regulator OFF)
0.02
5
µA
Note 1：Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which
the device is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions,
see the Electrical Characteristics.
Note 2：The human body model is a 100 pF capacitor discharged through a 1.5K resister into each pin.
Note 3：External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect switching
regulator system performance. When the AMC2596 is used as shown in the Figure 1 test circuit, system performance will be as shown in
system parameters section of Electrical Characteristics.
Note 4：The switching frequency is reduced when the second stage current limit is activated. The amount of reduction is determined by the severity of
current over-load.
Note 5：No diode, inductor or capacitor connected to output pin.
Note 6：Feedback pin removed from output and connected to 0V to force the output transistor switch ON.
Note 7：Feedback pin removed from output and connected to 12V for the 3.3V, 5V, and the ADJ. version, and 15Vfor the 12V version, to force the
output transistor switch OFF.
Note 8：VIN＝40V
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