S5ELM2596 Datasheet, PDF (4/8 Pages) SeCoS Halbleitertechnologie GmbH – Simple Switcher Power Converter 150KHz 3A Step-Down Voltage Regulator

Elektronische Bauelemente
S5ELM2596
Simple Switcher Power Converter
150KHz 3A Step-Down Voltage Regulator
All Output Voltage Version Electrical Characteristics
Specifications with standard type face are for TJ=25 к, and those with boldface type apply over full operating temperature range.
Unless otherwise specified, VIN=12V for the 3.3V, 5.0V and Adjustable versions, VIN=24V for 12V version. ILOAD=0.5A
Parameter
Symbol
Conditions
Min
(Note4)
Typ
(Note3)
Max
(Note4)
Feedback bias current
Ib VFB=1.3V (adjustable version only)
-
10
50/00
Unit
nA
Oscillator frequency
fO (Note 6)
127/110 150 173/173 kHz
Saturation voltage
VSAT ILOAD=3A (Note 7, 8)
-
1.16 1.4/1.5
V
Maximum duty cycle (ON)
(OFF)
DC
(Note 8)
(Note 9)
-
100
0
-
%
Current limit
ICL Peak Current (Note 7, 8)
3.6/3.4
4.5
6.9/7.5
A
Output leakage current
IL
Output=0V(Note 7, 9)
Output=-1V (Note 10)
-
-
50
uA
-
2
30
mA
Quiescent current
IQ (Note 9)
-
5
10
mA
Standby quiescent
current
ISTBY ON/OFF pin=5V (OFF)(Note 10)
-
80
200/250 uA
Thermal Resistance
JC Junction to Case
JA Junction to Ambient (Note 11)
-
2
-
к/W
-
50
-
ON/OFF Control Test Circuit Figure 2
ON/OFF pin logic input
Threshold Voltage
VIH Low (Regulator ON)
VIL High (Regulator OFF)
-
1.3
-
-
0.6
V
2.0
-
-
ON/OFF pin input
current
IH VLOGIC=2.5V ( Regulator OFF)
IL VLOGIC=0.5V ( Regulator ON)
-
5
15
uA
-
0.02
5
Note 1: Absolute Maximum Rating indicate limits beyond which damage to the device may occur. Operating Rating indicate conditions for
which the device is intended to be functional, but do not guaranteed specific performance limits. For guaranteed specifications and
test conditions, see the Electrical Characteristics.
Note 2: The human body mode is a 100pF capacitor discharged through a 1.5k resistor into each pin.
Note 3: Typical number are at 25к and represent the most likely norm.
Note 4: All limits guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature
limits are 100% production tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical
Quality Control (SQC) method. All limits are used to calculate Average Outgoing Quality Level (AOQL).
Note 5: External component such as the catch diode, inductor, input and output capacitors, and voltage programming resistor can affect
switching regulator system performance. When the G5ELM2596 is used as shutdown in the Figure 1 test circuit, system
performance will be as shown in system parameters section of Electrical Characteristics.
Note 6: 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 7: No diode, inductor or capacitor connected to output pin.
Note 8: Feedback pin removed from output and connected to 0V to force the output transistor switch ON.
Note 9: Feedback pin removed from output and connected to 12V for the Adjustable, 3.3V and 5V versions, and 15V for the 12V version,
to force the output transistor switch OFF.
Note 10: VIN=40V.
Note 11: Junction to ambient thermal resistance (no external heat sink) for To-220 package mounted vertically, with the leads soldered to a
printed circuit board with (1 oz.) copper area of approximately 1 in².
http://www.SeCoSGmbH.com/
01-Jun-2002 Rev. A
Any changing of specification will not be informed individual
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