Datasheet

LM2592HV
SNVS075C –MAY 2001–REVISED APRIL 2013 www.ti.com
ELECTRICAL CHARACTERISTICS ALL OUTPUT VOLTAGE VERSIONS
Specifications with standard type face are for T
J
= 25°C, and those with boldface type apply over full Operating
Temperature Range. Unless otherwise specified, V
IN
= 12V for the 3.3V, 5V, and Adjustable version. I
LOAD
= 500 mA
Symbol Parameter Conditions LM2592HV-XX Units
(Limits)
Typ
(1)
Limit
(2)
DEVICE PARAMETERS
I
b
Feedback Bias Current Adjustable Version Only, V
FB
= 1.3V 10 nA
50/100 nA (max)
f
O
Oscillator Frequency See
(3)
150 kHz
127/110 kHz(min)
173/173 kHz(max)
V
SAT
Saturation Voltage I
OUT
= 2A
(4)(5)
1.10 V
1.3/1.4 V(max)
DC Max Duty Cycle (ON) See
(5)(6)
100 %
Min Duty Cycle (OFF) 0
I
CLIM
Switch current Limit Peak Current
(4)(5)
3.0 A
2.4/2.3 A(min)
3.7/4.0 A(max)
I
L
Output Leakage Current Output = 0V 50 μA(max)
Output = −1V
(4)(6)(7)
5 mA
30 mA(max)
I
Q
Operating Quiescent SD /SS Pin Open
(6)
5 mA
Current 10 mA(max)
I
STBY
Standby Quiescent SD /SS pin = 0V
(7)
90 μA
Current 200/250 μA(max)
θ
JC
Thermal Resistance TO-220 or DDPAK Package, Junction to Case 2 °C/W
θ
JA
TO-220 Package, Junction to Ambient
(8)
50 °C/W
θ
JA
DDPAK Package, Junction to Ambient
(9)
50 °C/W
θ
JA
DDPAK Package, Junction to Ambient
(10)
30 °C/W
θ
JA
DDPAK Package, Junction to Ambient
(11)
20 °C/W
ON/OFF CONTROL Test Circuit and Layout Guidelines
ON /OFF Pin Logic Input 1.3 V
V
IH
Threshold Voltage Low (Regulator ON) 0.6 V(max)
V
IL
High (Regulator OFF) 2.0 V(min)
I
H
ON /OFF Pin Input Current V
LOGIC
= 2.5V (Regulator OFF) 5 μA
15 μA(max)
I
L
V
LOGIC
= 0.5V (Regulator ON) 0.02 μA
5 μA(max)
(1) Typical numbers are at 25°C and represent the most likely norm.
(2) All limits ensured 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 ensured via correlation using standard Statistical Quality Control
(SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
(3) The switching frequency is reduced when the second stage current limit is activated. The amount of reduction is determined by the
severity of current overload.
(4) No diode, inductor or capacitor connected to output pin.
(5) Feedback pin removed from output and connected to 0V to force the output transistor switch ON.
(6) Feedback pin removed from output and connected to 12V for the 3.3V, 5V, and the ADJ. version to force the output transistor switch
OFF.
(7) V
IN
= 60V.
(8) Junction to ambient thermal resistance (no external heat sink) for the package mounted TO-220 package mounted vertically, with the
leads soldered to a printed circuit board with (1 oz.) copper area of approximately 1 in
2
.
(9) Junction to ambient thermal resistance with the DDPAK package tab soldered to a single sided printed circuit board with 0.5 in
2
of (1
oz.) copper area.
(10) Junction to ambient thermal resistance with the DDPAK package tab soldered to a single sided printed circuit board with 2.5 in
2
of (1
oz.) copper area.
(11) Junction to ambient thermal resistance with the DDPAK package tab soldered to a double sided printed circuit board with 3 in
2
of (1 oz.)
copper area on the LM2592HVS side of the board, and approximately 16 in
2
of copper on the other side of the p-c board. See
application hints in this data sheet and the thermal model in Switchers Made Simple available at
http://www.ti.com/lsds/ti/analog/powermanagement/power_portal.page
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