LM3401MM/NOPB National Semiconductor, LM3401MM/NOPB Datasheet - Page 15
![IC LED DRIVER HIGH BRIGHT 8-MSOP](/photos/6/57/65756/pkg_mua08a_sml.jpg)
LM3401MM/NOPB
Manufacturer Part Number
LM3401MM/NOPB
Description
IC LED DRIVER HIGH BRIGHT 8-MSOP
Manufacturer
National Semiconductor
Series
PowerWise®r
Type
HBLED Driverr
Datasheet
1.LM3401MMNOPB.pdf
(18 pages)
Specifications of LM3401MM/NOPB
Constant Current
Yes
Topology
PWM, Step-Down (Buck)
Number Of Outputs
1
Internal Driver
No
Type - Primary
General Purpose
Type - Secondary
High Brightness LED (HBLED)
Frequency
1.5MHz
Voltage - Supply
4.5 V ~ 35 V
Mounting Type
Surface Mount
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Operating Temperature
-40°C ~ 125°C
Current - Output / Channel
1A
Internal Switch(s)
Yes
Efficiency
92%
Operating Supply Voltage (typ)
5/9/12/15/18/24V
Number Of Segments
1
Operating Temperature (min)
-40C
Operating Temperature (max)
125C
Operating Temperature Classification
Automotive
Package Type
MSOP
Pin Count
8
Mounting
Surface Mount
Power Dissipation
660mW
Operating Supply Voltage (min)
4.5V
Operating Supply Voltage (max)
35V
For Use With
LM3401EVAL - BOARD EVALUATION FOR LM3401
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Lead Free Status / Rohs Status
Compliant
Other names
LM3401MMTR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LM3401MM/NOPB
Manufacturer:
NS/国半
Quantity:
20 000
This is the estimated amount of LED current variation over the
input voltage range. If the minimum input voltage was below
Parameter
Regulation
Accuracy
Ta_max
I
PFET
LED_PK
I
ripple
R1
R2
f
R3
C1
D1
C2
L1
sw
2.2 µF, 50V ceramic
40V, 1.8A, 130 mΩ
33 µH, >804 mA
1.0 µF, 50V
290 mΩ
40V, 1A
5.6 kΩ
±6.1%
108°C
Value
46 kΩ
1.6%
-
-
-
TABLE 1. Design Example Summary
0.95A minimum peak current limit
±42 mA max variation
±22.4 mV hysteresis
LED ripple reduction
15
11 mA variation
>345 mA rms
1MHz typical
690 mA DC
227 mA p-p
17V, the LED current variation would be calculated using the
100% duty cycle equation.
804 mA
Result
V
HYS
= 112 mV(adjustable)
219 kHz min
part-to-part
worst case
worst case
worst case
Comment
adjustable
Schottky
optional
vs VIN
1%
www.national.com