Datasheet

LM2675
SNVS129E –MAY 2004–REVISED JUNE 2005 www.ti.com
LM2675-5.0 Electrical Characteristics
Symbol Parameter Conditions Typ
(1)
Min
(2)
Max
(2)
Units
SYSTEM PARAMETERS Test Circuit Figure 22
(3)
V
OUT
Output Voltage V
IN
= 8V to 40V, I
LOAD
= 20 mA to 1A 5.0 4.925/4.850 5.075/5.150 V
V
OUT
Output Voltage V
IN
= 6.5V to 40V, I
LOAD
= 20 mA to 500 mA 5.0 4.925/4.850 5.075/5.150 V
η Efficiency V
IN
= 12V, I
LOAD
= 1A 90 %
(1) Typical numbers are at 25°C and represent the most likely norm.
(2) All limits specified 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 specified via correlation using standard Statistical Quality Control
(SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
(3) External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect
switching regulator performance. When the LM2675 is used as shown in Figure 22 and Figure 23 test circuits, system performance will
be as specified by the system parameters section of the Electrical Characteristics.
LM2675-12 Electrical Characteristics
Symbol Parameter Conditions Typ
(1)
Min
(2)
Max
(2)
Units
SYSTEM PARAMETERS Test Circuit Figure 22
(3)
V
OUT
Output Voltage V
IN
= 15V to 40V, I
LOAD
= 20 mA to 1A 12 11.82/11.64 12.18/12.36 V
η Efficiency V
IN
= 24V, I
LOAD
= 1A 94 %
(1) Typical numbers are at 25°C and represent the most likely norm.
(2) All limits specified 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 specified via correlation using standard Statistical Quality Control
(SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
(3) External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect
switching regulator performance. When the LM2675 is used as shown in Figure 22 and Figure 23 test circuits, system performance will
be as specified by the system parameters section of the Electrical Characteristics.
LM2675-ADJ Electrical Characteristics
Symbol Parameter Conditions Typ
(1)
Min
(2)
Max
(2)
Units
SYSTEM PARAMETERS Test Circuit Figure 23
(3)
V
FB
Feedback Voltage V
IN
= 8V to 40V, I
LOAD
= 20 mA to 1A
V
OUT
Programmed for 5V 1.210 1.192/1.174 1.228/1.246 V
(see Circuit of Figure 23)
V
FB
Feedback Voltage V
IN
= 6.5V to 40V, I
LOAD
= 20 mA to 500 mA
V
OUT
Programmed for 5V 1.210 1.192/1.174 1.228/1.246 V
(see Circuit of Figure 23)
η Efficiency V
IN
= 12V, I
LOAD
= 1A 90 %
(1) Typical numbers are at 25°C and represent the most likely norm.
(2) All limits specified 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 specified via correlation using standard Statistical Quality Control
(SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
(3) External components such as the catch diode, inductor, input and output capacitors, and voltage programming resistors can affect
switching regulator performance. When the LM2675 is used as shown in Figure 22 and Figure 23 test circuits, system performance will
be as specified by the system parameters section of the Electrical Characteristics.
All Output Voltage Versions Electrical Characteristics
Specifications with standard type face are for T
J
= 25°C, and those with bold type face apply over full Operating
Temperature Range. Unless otherwise specified, V
IN
= 12V for the 3.3V, 5V, and Adjustable versions and V
IN
= 24V for the
12V version, and I
LOAD
= 100 mA.
Symbol Parameters Conditions Typ Min Max Units
DEVICE PARAMETERS
I
Q
Quiescent Current V
FEEDBACK
= 8V 2.5 3.6 mA
For 3.3V, 5.0V, and ADJ Versions
V
FEEDBACK
= 15V 2.5 mA
For 12V Versions
I
STBY
Standby Quiescent Current ON/OFF Pin = 0V 50 100/150 μA
I
CL
Current Limit 1.55 1.25/1.2 2.1/2.2 A
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