LM3478MMX/NOPB National Semiconductor, LM3478MMX/NOPB Datasheet - Page 2
![IC CTRLR SW REG N-CH 8MSOP](/photos/6/57/65756/pkg_mua08a_sml.jpg)
LM3478MMX/NOPB
Manufacturer Part Number
LM3478MMX/NOPB
Description
IC CTRLR SW REG N-CH 8MSOP
Manufacturer
National Semiconductor
Type
Step-Up (Boost), Flyback, Sepicr
Datasheet
1.LM3478MMNOPB.pdf
(24 pages)
Specifications of LM3478MMX/NOPB
Internal Switch(s)
No
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
Adjustable
Current - Output
1A
Frequency - Switching
100kHz ~ 1MHz
Voltage - Input
2.97 ~ 40 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Dc To Dc Converter Type
Step Up
Pin Count
8
Input Voltage
2.97 to 40V
Output Voltage
1.26V
Output Current
1A
Package Type
MSOP
Mounting
Surface Mount
Operating Temperature Classification
Automotive
Operating Temperature (min)
-40C
Operating Temperature (max)
125C
For Use With
LM3478EVAL - BOARD EVALUATION LM3478
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
Compliant
Other names
*LM3478MMX
*LM3478MMX/NOPB
LM3478MMX
*LM3478MMX/NOPB
LM3478MMX
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM3478MMX/NOPB
Manufacturer:
ALLEN BRADLEY
Quantity:
1 000
Part Number:
LM3478MMX/NOPB
Manufacturer:
TI
Quantity:
20 000
www.national.com
Order Number
LM3478QMMX
Connection Diagram
Package Marking and Ordering Information
* Automotive Grade (Q) product incorporates enhanced manufacturing and support processes for the automotive market, including defect detection methodologies.
Reliability qualification is compliant with the requirements and temperature grades defined in the AEC-Q100 standard. Automotive grade products are identified
with the letter Q. For more information go to http://www.national.com/automotive.
Pin Descriptions
LM3478QMM
LM3478MMX
LM3478MM
Pin Name
COMP
AGND
PGND
FA/SD
I
DR
V
Package Type
SEN
FB
IN
MSOP-8
MSOP-8
Pin Number
Package Marking
1
2
3
4
5
6
7
8
8 Lead Mini SO8 Package (MSOP-8 Package)
SSUB
S14B
Current sense input pin. Voltage generated across an external sense
resistor is fed into this pin.
Compensation pin. A resistor, capacitor combination connected to this
pin provides compensation for the control loop.
Feedback pin. The output voltage should be adjusted using a resistor
divider to provide 1.26V at this pin.
Analog ground pin.
Power ground pin.
Drive pin. The gate of the external MOSFET should be connected to
this pin.
Frequency adjust and Shutdown pin. A resistor connected to this pin
sets the oscillator frequency. A high level on this pin for longer than
30 µs will turn the device off. The device will then draw less than 10µA
from the supply.
Power Supply Input pin.
1000 units on Tape and Reel
3500 units on Tape and Reel
1000 units on Tape and Reel
3500 units on Tape and Reel
2
Supplied As
Description
10135502
Automotive Grade Production Flow*
AEC-Q100 (Grade 1) qualified.
Feature