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TEXAS INSTRUMENTS  LM3478MA/NOPB  PWM Controller Current Mode, 40V-2.97V supply, 1 MHz, 1A out, SOIC-8

TEXAS INSTRUMENTS LM3478MA/NOPB
Technical Data Sheet (10.14KB) EN See all Technical Docs

Image is for illustrative purposes only. Please refer to product description.

Product Overview

The LM3478MA/NOPB is a versatile Low-side N-channel MOSFET Controller for switching regulator. It is suitable for use in topologies requiring a low side MOSFET, such as boost, flyback, SEPIC, etc. Moreover, the LM3478 can be operated at extremely high switching frequency in order to reduce the overall solution size. The switching frequency of the controller can be adjusted to any value between 100kHz and 1MHz by using a single external resistor. Current mode control provides superior bandwidth and transient response, besides cycle-by-cycle current limiting. Output current can be programmed with a single external resistor. This N-channel controller has built in features such as thermal shut-down, short-circuit protection, over voltage protection, etc. Power saving shutdown mode reduces the total supply current to 5µA and allows power supply sequencing. Internal soft-start limits the inrush current at start-up.
  • Current limit and thermal shutdown
  • Frequency compensation optimized with a capacitor and a resistor
  • Internal soft-start
  • Current mode operation
  • Under-voltage lockout with hysteresis
  • Green product and no Sb/Br
This device has limited built-in ESD protection, leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

Product Information

Input Voltage:
-
Output Voltage:
-
Output Current:
1A
Supply Voltage Min:
2.97V
Supply Voltage Max:
40V
Controller IC Case Style:
SOIC
No. of Pins:
8Pins
Frequency:
1MHz
Operating Temperature Min:
-40°C
Operating Temperature Max:
125°C
Packaging:
Each
Product Range:
-
Automotive Qualification Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (15-Jun-2015)

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Applications

  • Power Management;
  • Communications & Networking;
  • Automotive

Legislation and Environmental

Moisture Sensitivity Level:
MSL 1 - Unlimited
Country of Origin:
Malaysia

Country in which last significant manufacturing process was carried out

RoHS Compliant:
Yes
Tariff No:
85423990
Weight (kg):
.002268

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