LM3477EVAL National Semiconductor, LM3477EVAL Datasheet - Page 5

• Manufacturer Part Number: LM3477EVAL
• Description: BOARD EVALUATION LM3477
• Manufacturer: National Semiconductor

Specifications of LM3477EVAL

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 3.3V
• Current - Output: 1.6A
• Voltage - Input: 4.5 ~ 15V
• Regulator Topology: Buck
• Frequency - Switching: 500kHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM3477
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Power - Output: -

TSD
T
θ
Electrical Characteristics
Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device
is intended to be functional. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: The CB pin must not be higher than 8V above the V
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5kΩ resistor into each pin. The machine model is 200 pF capacitor discharged directly
into each pin.
Note 4: All limits are guaranteed at room temperature (standard type face) and at temperature extremes (bold type face). All room temperature limits are 100%
tested. All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate
Average Outgoing Quality Level (AOQL).
Note 5: For this test, the COMP/SD pin must be left floating.
Note 6: For this test, the COMP/SD pin must be pulled low.
Note 7: The over-voltage protection is specified with respect to the feedback voltage. This is because the over-voltage protection tracks the feedback voltage. The
overvoltage protection threshold is given by adding the feedback voltage, V
Note 8: The COMP/SD pin should be pulled to ground to turn the regulator off. The voltage on the COMP/SD pin must be below the limit for Output = Low to keep
the regulator off.
JA
SH
Specifications in Standard type face are for T
Range. Unless otherwise specified, V
Symbol
Thermal Shutdown
Thermal Shutdown Hysteresis
Thermal Resistance
Parameter
IN
= 12V.
(Note 4) (Continued)
J
= 25˚C, and in bold type face apply over the full Operating Temperature
SW
.
MM Package
FB
Conditions
to the over-voltage protection specification.
5
Typical
165
200
10
Limit
www.national.com
Units
˚C/W
˚C
˚C