Datasheet

LM2675
www.ti.com SNVS129E –MAY 2004–REVISED JUNE 2005
Absolute Maximum Ratings
(1)(2)
Supply Voltage 45V
ON/OFF Pin Voltage −0.1V ≤ V
SH
≤ 6V
Switch Voltage to Ground −1V
Boost Pin Voltage V
SW
+ 8V
Feedback Pin Voltage −0.3V ≤ V
FB
≤ 14V
ESD Susceptibility
Human Body Model
(3)
2 kV
Power Dissipation Internally Limited
Storage Temperature Range −65°C to +150°C
Lead Temperature
D Package Vapor Phase (60s) +215°C
Infrared (15s) +220°C
P Package (Soldering, 10s) +260°C
WSON Package (See AN-1187 - SNOA401)
Maximum Junction Temperature +150°C
(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 device parameter specifications may not be ensured under these conditions. For
ensured specifications and test conditions, see the Electrical Characteristics.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(3) The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin.
Operating Ratings
Supply Voltage 6.5V to 40V
Junction Temperature Range −40°C ≤ T
J
≤ +125°C
LM2675-3.3 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.
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 3.3 3.251/3.201 3.350/3.399 V
V
OUT
Output Voltage V
IN
= 6.5V to 40V, I
LOAD
= 20 mA to 500 mA 3.3 3.251/3.201 3.350/3.399 V
η Efficiency V
IN
= 12V, I
LOAD
= 1A 86 %
(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.
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