ETC2 N2596G-5 150 khz 3a step-down switching voltage regulator (svr)-preliminary Datasheet

150 KHz 3A Step-Down Switching
NIKO-SEM Voltage Regulator (SVR)-Preliminary
N2596G-5
TO-220, TO263
GENERAL DESCRIPTION
FEATURES
The N2596 Series switching voltage
regulators (SVR) are monolithic integrated
circuits that provide all the active functions
for a step-down (buck) switching regulator,
Both series are capable of driving
3 A load respectively with excellent line and
load regulation.
The N2596 Series SVR include a switching
regulator and compensation network all
within the same package. Just add a choke,
catch diode and two capacitors to obtain an
efficient DC-to-DC converter. The output
switch includes cycle-by-cycle current limit
-ing, as well as thermal shutdown for full
protection under fault conditions.
The N2596 Series SVR offer replacement
for popular 3 terminal linear regulators by
providing higher efficiency with reduced
heat sink size. In many applications a heat
sink will not be required.
z Pin compatible with industry products of
LM2596 Series
z Fixed 5V output version
z Wide output voltage range, 1.23V to 27V
for adjustable output version
z DC-to-DC buck converter requiring only 4
external parts
z150 KHz fixed frequency internal oscillator
z TTL shutdown capability, low power stand
-by mode
z High efficiency
z Uses readily available standard inductors
APPLICATIONS
z Simple high-efficiency step-down (buck)
regulator
z Positive to negative converter (Inverting
Buck-Boost)
z Isolated Fly back Converter using minimum number of external parts
z Powering portable instrument, Set-Top
Box, LCD Monitor, Scanner, I.A, Easy PC
z SMPS Post-Regulator
TYPICAL APPLICATION
8V - 27V
Unregulated
DC Input
1
4
N2596
2
+Vin
3
Gnd
Cin
100uF
On/Off
Feedback
Output
+5V, 3A
Regulated
Output
L1
47uH
5
+
D1
1N5822
1
+
Cout
1000uF
MAY-03-2004
150 KHz 3A Step-Down Switching
N2596G-5
NIKO-SEM Voltage Regulator (SVR)-Preliminary
TO-220, TO263
ABSOLUTE MAXIMUM RATINGS
z Maximum Supply Voltage
z Thermal Resistance
Junction to Ambient, θJA
TO-220
TO-263
z Operating Junction
Temperature Range
z Storage Temperature
Range
z Lead Temperature
(Soldering, 10 Seconds)
30V
z ON/OFF Pin Input Voltage
-0.3≤V≤+VI
z Output Voltage to Ground
(Stead State)
-1V
Internally
Limited
z Power Dissipation
z Thermal Resistance
Junction to Case, θJC
2.0°C/W
50°C/W
60°C/W
-40 to 125°C
-65 to 150°C
260°C
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, TA = 25°C.)
Parameter
Symbol
Test Conditions
Typical
Limits
Output Voltage
VOUT
VIN = 12V
ILOAD = 0.5A
5V
Output Voltage
VOUT
8V ≤ VIN ≤ 27V
0.5A ≤ ILOAD ≤ 3A
4.9VMin
5.1VMax
5V
4.8VMin
5.2VMax
Efficiency
Oscillator
Frequency
Saturation Voltage
Current Limit
ON/OFF Pin Logic
Input Level
ON/OFF Pin Logic
Input Current
η
VIN = 12V, VOUT = 5V
IOUT = 3A
FOSC
VSAT
ICL
VIH
VIL
IIH
IIL
IOUT = 3A
VOUT = 0V
VOUT = Nominal Output Voltage
ON/OFF Pin = 5V (OFF)
ON/OFF Pin = 0V (ON)
77%
127 KHz (Min)
150KHz 173 KHz (Max)
1.4V
1.8VMax
6.0A
4.0A ~ 7.0A
1.4V
2.2V (Min)
1.2V
1.0V (Max)
12µA
30µA (Max)
0µA
10µA (Max)
REMARK: Orders for parts with Lead-Free plating can be placed using the N2596XG-5 parts name.
2
MAY-03-2004
150 KHz 3A Step-Down Switching
NIKO-SEM Voltage Regulator (SVR)-Preliminary
N2596G-5
TO-220, TO263
DEVICE SELECTION GUIDE
Device
N2596SG-5
N2596TG-5
Voltage (V)
5
5
3
Current (A)
Package
TO-263
TO-220
Marking
N2596SG-5
N2596TG-5
PIN CONFIGURATIONS
5 -LEAD TO-220 (T)
Ground
5 - On/Off
4 - Feedback
3 - Ground
2 - Output
1 - Vin
5 -LEAD TO-263 (S)
Ground
5 - On/Off
4 - Feedback
3 - Ground
2 - Output
1 - Vin
3
MAY-03-2004
150 KHz 3A Step-Down Switching
NIKO-SEM Voltage Regulator (SVR)-Preliminary
N2596G-5
TO-220, TO263
TO-220 (5-Lead) MECHANICAL DATA
Dimension
mm
Dimension
Min.
Typ.
Max.
A
9.78
10.16
10.54
H
B
2.61
2.74
2.87
I
C
mm
Min.
Typ.
Max.
1.57
1.7
1.83
6.81
J
4.4
4.6
4.8
D
28.5
28.9
29.3
K
1.14
1.27
1.4
E
14.6
15.0
15.4
L
2.3
2.6
2.9
F
8.4
8.8
9.2
M
0.26
0.46
0.66
G
0.73
0.83
0.93
N
4
7°
MAY-03-2004
150 KHz 3A Step-Down Switching
NIKO-SEM Voltage Regulator (SVR)-Preliminary
N2596G-5
TO-220, TO263
TO-263 (D2PAK, 5-Lead) MECHANICAL DATA
Dimension
mm
Min.
Typ.
Max.
A
14.5
15
15.8
B
4.2
C
1.20
D
Dimension
Min.
Typ.
Max.
H
1.0
1.5
1.8
4.7
I
9.8
1.35
J
6.5
K
1.5
2.8
E
0.3
F
-0.102
G
8.5
0.4
9
mm
10.3
0.5
L
0.7
0.85
1.0
0.203
M
1.57
1.7
1.83
9.5
N
5
MAY-03-2004
Similar pages