LM3405XMK/NOPB National Semiconductor, LM3405XMK/NOPB Datasheet - Page 15

• Manufacturer Part Number: LM3405XMK/NOPB
• Description: IC LED DRVR HP CONST CURR TSOT-6
• Manufacturer: National Semiconductor
• Series: PowerWise®r
• Type: High Power, Constant Currentr

Specifications of LM3405XMK/NOPB

• Constant Current: Yes
• Topology: PWM, Step-Down (Buck)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Flash/Torch
• Type - Secondary: High Brightness LED (HBLED), White LED
• Frequency: 1.2MHz ~ 1.9MHz
• Voltage - Supply: 3 V ~ 15 V
• Mounting Type: Surface Mount
• Package / Case: TSOT-23-6, TSOT-6
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 1A
• Internal Switch(s): Yes
• Efficiency: 92%
• For Use With: LM3405XEVAL - BOARD EVALUATION LM3405X
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Other names: LM3405XMKTR

Part ID
U1
C1, Input Cap
C2, Output Cap
C3, Boost Cap
C4, Feedforward Cap
C5, Shunt Cap
D1, Catch Diode
D2, Boost Diode
D3, Zener Diode
L1
R1
R2
LED1
FIGURE 17. V
Part Value
1A LED Driver
10µF, 25V, X5R
1µF, 10V, X7R
0.01µF, 16V, X7R
1µF, 10V, X7R
0.1µF, 16V, X7R
Schottky, 0.5V at 1A, V
Schottky, 0.36V at 15mA
4.7V, 350mW, SOT-23
6.8µH, 1.5A
0.2Ω, 0.5W, 1%
1.91kΩ, 1%
1A, White LED
BOOST
derived from V
Bill of Materials for Figure 17
( V
R
IN
= 30V SS13
= 15V, I
15
IN
Part Number
LM3405
ECJ-3YB1E106K
GRM319R71A105KC01D
0805YC103KAT2A
GRM319R71A105KC01D
GRM219R71C104KA01D
CMDSH-3
BZX84C4V7
SLF6028T-6R8M1R5
WSL2010R2000FEA
CRCW08051K91FKEA
LXHL-PW09
through a Shunt Zener Diode (D3)
F
= 1A )
Manufacturer
National Semiconductor
Panasonic
Murata
AVX
Murata
Murata
Vishay
Central Semiconductor
Fairchild
TDK
Vishay
Vishay
Lumileds
20178944
www.national.com