LM3410XMFE/NOPB National Semiconductor, LM3410XMFE/NOPB Datasheet
LM3410XMFE/NOPB
Specifications of LM3410XMFE/NOPB
Available stocks
Related parts for LM3410XMFE/NOPB
LM3410XMFE/NOPB Summary of contents
Page 1
... Space Saving SOT23-5 & 6-LLP Package ■ Input voltage range of 2.7V to 5.5V ■ Output voltage range 24V Typical Boost Application Circuit © 2010 National Semiconductor Corporation LM3410/LM3410Q ■ 2.8A Typical Switch Current ■ High Switching Frequency — 525 KHz (LM3410-Y) — ...
Page 2
Connection Diagrams Top View 30038503 5–Pin SOT23 Ordering Information Order Number Frequency LM3410YMF LM3410YMFX LM3410YMFE LM3410YQMF LM3410YQMFX 525 kHz LM3410YSD LM3410YSDX LM3410YSDE LM3410YMY LM3410YMYX LM3410YMYE LM3410XMF LM3410XMFX LM3410XMFE LM3410XQMF LM3410XQMFX 1.6 MHz LM3410XSD LM3410XSDX LM3410XSDE LM3410XMY LM3410XMYX LM3410XMYE *Automotive Grade ...
Page 3
Pin Descriptions - 5-Pin SOT23 Pin Name Function 1 SW Output switch. Connect to the inductor, output diode. Signal and power ground pin. Place the bottom resistor of the feedback network as close as possible to this 2 GND pin. ...
Page 4
... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications Voltage FB Voltage DIM Voltage ESD Susceptibility (Note 4) Human Body Model Junction Temperature (Note 2) Electrical Characteristics junction temperature (T ) range of -40°C to 125°C. Minimum and Maximum limits are guaranteed through test, design, or statistical J correlation ...
Page 5
Typical Performance Characteristics application circuit shown in Application Information section of this datasheet. T LM3410-X Efficiency 3.3V LEDs 500 Hz DIM FREQ D = 50% Current Limit vs Temperature All curves taken ...
Page 6
Oscillator Frequency vs Temperature - "X" Temperature FB www.national.com Oscillator Frequency vs Temperature - "Y" 30038512 30038580 6 30038513 ...
Page 7
Simplified Internal Block Diagram Application Information THEORY OF OPERATION The LM3410 is a constant frequency PWM, boost regulator IC. It delivers a minimum of 2.1A peak switch current. The device operates very similar to a voltage regulated boost con- verter ...
Page 8
FIGURE 2. Simplified Boost Topology Schematic FIGURE 3. Typical Waveforms CURRENT LIMIT The LM3410 uses cycle-by-cycle current limiting to protect the internal NMOS switch important to note that this cur- rent limit will not protect the output from ...
Page 9
The Duty Cycle (D) for a Boost converter can be approximat using the ratio of output voltage ( Therefore: Power losses due to the diode (D1) forward voltage drop, the voltage drop across the internal ...
Page 10
The ESL of an input capacitor is usually determined by the effective cross sec- tional area of the current path. At the operating frequencies of the LM3410, certain capacitors may have an ESL so large ...
Page 11
... FIGURE 7. Boost PCB Layout Guidelines This is very similar to our LM3410 demonstration boards that are obtainable via the National Semiconductor website. The demonstration board consists of a two layer PCB with a com- mon input and output voltage application. Most of the routing is on the top layer, with the bottom layer consisting of a large ground plane ...
Page 12
The datasheet values for these symbols are given so that one might compare the thermal performance of one package against another. To achieve a comparison between pack- ages, all other variables must be held constant in the com- parison (PCB ...
Page 13
FIGURE 10. Associated Thermal Model 13 30038535 www.national.com ...
Page 14
Calculating Efficiency, and Junction Temperature We will talk more about calculating proper junction tempera- ture with relative certainty in a moment. For now we need to describe how to calculate the junction temperature and clarify some common misconceptions. A common ...
Page 15
IND IN DCR or The LM3410 conduction loss is mainly associated with the internal power switch COND-NFET SW-rms DSON FIGURE 11. LM3410 Switch Current (small ripple approximation ...
Page 16
Total Power Losses are: TABLE 2. Power Loss Tabulation V 3. 16.7V OUT I 50mA P LED 0.45V 1.6MHz f SW 10nS 10nS t P RISE 3mA 225mΩ ...
Page 17
LM3410 Boost Converter is applicable to the LM3410 SEPIC Converter. SEPIC Design Guide: SEPIC Conversion ratio without loss elements: Therefore: Small ripple approximation well-designed SEPIC converter, the output voltage, and input voltage ripple, the inductor ...
Page 18
Steady State Analysis with Loss Elements Using inductor volt-second balance & capacitor charge bal- ance, the following equations are derived LED and (D/D') L1 LED Therefore: One can see that ...
Page 19
LM3410X SOT23-5 Design Example 1206 Series LED String Application LM3410X (1.6MHz): V Part ID U1 2.8A I C1, Input Cap C2 Output Cap D1, Catch Diode 0. LED's SMD-1206, 50mA 2.7V ...
Page 20
LM3410Y SOT23-5 Design Example 1206 Series LED String Application LM3410Y (525kHz): V Part ID U1 C1, Input Cap C2 Output Cap D1, Catch Diode 0. LED's SMD-1206, 50mA, V www.national.com = 2.7V to 5.5V, ...
Page 21
LM3410X LLP-6 Design Example 3: 7 LEDs x 5 LED String Backlighting Application LM3410X (1.6MHz): V Part ID U1 2.8A I C1, Input Cap C2 Output Cap D1, Catch Diode 0. LED's SMD-1206, 50mA ...
Page 22
LM3410X LLP-6 Design Example LED String Application LM3410X (1.6MHz): V Part ID U1 C1, Input Cap C2 Output Cap D1, Catch Diode 0. LED's www.national.com = 2.7V to 5.5V, 3 ...
Page 23
LM3410Y SOT23-5 Design Example 1206 Series LED String Application with OVP LM3410Y (525kHz): V Part Input Cap C2 Output Cap D1, Catch Diode 0. LED’s SMD-1206, 50mA, ...
Page 24
LM3410X SEPIC LLP-6 Design Example 6: HB/OLED Illumination Application LM3410X (1.6MHz): V Part Input Cap C2 Output Cap C3 Cap D1, Catch Diode L1 & LED’s www.national.com = 2.7V to 5.5V, (V ...
Page 25
LM3410X LLP-6 Design Example 7: Boost Flash Application LM3410X (1.6MHz): V Part Input Cap C2 Output Cap D1, Catch Diode 0. LED’s 500mA, V ≊ = 2.7V to 5.5V, (V 8V) I ...
Page 26
LM3410X SOT23-5 Design Example 1206 Series LED String Application with VIN > 5.5V LM3410X (1.6MHz): V Part Input V Cap PWR C2 Output Cap C2 Input V Cap IN D1, Catch Diode 0.43V L1 ...
Page 27
LM3410X LLP-6 Design Example 9: Camera Flash or Strobe Circuit Application LM3410X (1.6MHz): V Part Input V Cap PWR C2 Output Cap 220µF, 10V, Tanatalum C3 Cap D1, Catch Diode 0.43V Q1, ...
Page 28
LM3410X SOT23-5 Design Example 10 1206 Series LED String Application with V LM3410X (1.6MHz): V Part Input V Cap PWR C2 V Cap OUT C3 Input V Cap IN D1, Catch Diode 0.43V L1 R1 ...
Page 29
LM3410X LLP-6 Design Example 11: Boot-Strap Circuit to Extend Battery Life LM3410X (1.6MHz): V Part Input V Cap PWR C2 V Cap OUT C3 Input V Cap IN D1, Catch Diode 0.43V D2, D3 Dual ...
Page 30
Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 6-Lead LLP Package NS Package Number SDE06A 5-Lead SOT23-5 Package NS Package Number MF05A 30 ...
Page 31
Package NS Package Number MUY08A 31 www.national.com ...
Page 32
... For more National Semiconductor product information and proven design tools, visit the following Web sites at: www.national.com Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock and Timing www.national.com/timing Data Converters www.national.com/adc Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www.national.com/ldo LED Lighting www ...