LM3488QMM National Semiconductor, LM3488QMM Datasheet - Page 5

• Manufacturer Part Number: LM3488QMM
• Description: LM3488/LM3488Q High Efficiency Low-Side N-Channel Controller for Switching Regulators; Package: MINI SOIC; No of Pins: 8; Container: Reel
• Manufacturer: National Semiconductor

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 human body model is a 100 pF capacitor discharged through a 1.5kΩ resistor into each pin.
Note 3: 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 4: Typical numbers are at 25°C and represent the most likely norm.
Note 5: The FA/SYNC/SD pin should be pulled to V
Note 6: The voltage on the drive pin, V
than or equal to 7.2V.
Note 7: The limits for the maximum duty cycle can not be specified since the part does not permit less than 100% maximum duty cycle operation.
Note 8: The over-voltage protection is specified with respect to the feedback voltage. This is because the over-voltage protection tracks the feedback voltage.
The over-voltage thresold can be calculated by adding the feedback voltage, V
Note 9: For this test, the FA/SYNC/SD Pin is pulled to ground using a 40K resistor .
Note 10: For this test, the FA/SYNC/SD Pin is pulled to 5V using a 40K resistor.
Typical Performance Characteristics
I
Q
vs Temperature & Input Voltage
I
Supply
DR
vs V
is equal to the input voltage when input voltage is less than 7.2V. V
IN
IN
through a resistor to turn the regulator off.
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FB
5
Unless otherwise specified, V
to the over-voltage protection specification.
I
Supply
Switching Frequency vs RFA
vs Input Voltage (Non-Switching)
DR
is equal to 7.2V when the input voltage is greater
IN
= 12V, T
J
= 25°C.
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