LM3485MM/NOPB National Semiconductor, LM3485MM/NOPB Datasheet - Page 4

• Manufacturer Part Number: LM3485MM/NOPB
• Description: IC CONTROLLER PFET 8-MSOP
• Manufacturer: National Semiconductor
• Type: Step-Down (Buck)r

Specifications of LM3485MM/NOPB

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.24 ~ 35 V
• Current - Output: 4A
• Voltage - Input: 4.5 ~ 35 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Power - Output: 417mW
• Dc To Dc Converter Type: Buck Controller
• Pin Count: 8
• Input Voltage: 4.5 to 35V
• Output Voltage: 1.242 to 35V
• Output Current: 4A
• Package Type: MSOP
• Mounting: Surface Mount
• Operating Temperature Classification: Automotive
• Operating Temperature (min): -40C
• Operating Temperature (max): 125C
• For Use With: LM3485LED EVAL - BOARD EVALUATION LM3485LEDLM3485EVAL - BOARD EVALUATION LM3485
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency - Switching: -
• Lead Free Status / Rohs Status: Compliant
• Other names: LM3485MM; LM3485MMTR

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Note 1: Absolute maximum ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the device is intended
to be functional, but device parameter specifications may not be guaranteed. For guaranteed specifications and test conditions, see the Electrical Characteristics.
Note 2: The maximum allowable power dissipation is a function of the maximum junction temperature, T
240°C/W, and the ambient temperature, T
P
Note 3: The human body model is a 100 pF capacitor discharged through a 1.5kΩ resistor 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: Typical numbers are at 25°C and represent the most likely norm.
Note 6: The V
Note 7: V
Note 8: Bias current flows out from the FB pin.
Note 9: A 1000pF capacitor is connected between V
Typical Performance Characteristics
D_MAX
= (T
CL
J_MAX
= I
FB
CL_ADJ
Hysteresis Voltage vs Input Voltage
Quiescent Current vs Input Voltage
is the trip voltage at the FB pin when PGATE switches from high to low.
- T
A
)/θ
* R
JA
ADJ
. Exceeding the maximum allowable power dissipation will cause excessive die temperature.
(FB = 1.5V)
A
. The maximum allowable power dissipation at any ambient temperature is calculated using:
IN
and PGATE.
20034601
20034605
4
Unless otherwise specified, T
Hysteresis Voltage vs Temperature
Feedback Voltage vs Temperature
J_MAX
, the junction-to-ambient thermal resistance, θ
J
= 25°C
20034606
20034607
JA
=