Datasheet LTC3307A (Analog Devices) - 15
| Manufacturer | Analog Devices |
| Description | 5V, 3A Synchronous Step-Down Silent Switcher in 2mm × 2mm LQFN |
| Pages / Page | 26 / 15 — APPLICATIONS INFORMATION. Table 2. Recommended Inductors with Typical … |
| Revision | A |
| File Format / Size | PDF / 3.2 Mb |
| Document Language | English |
APPLICATIONS INFORMATION. Table 2. Recommended Inductors with Typical Specifications. INDUCTOR. MANUFACTURER. FAMILY
Model Line for this Datasheet
- LTC3307AEV#TRMPBF LTC3307AEV#TRPBF LTC3307AEV#WTRMPBF LTC3307AEV#WTRPBF LTC3307AHV#TRMPBF LTC3307AHV#TRPBF LTC3307AHV#WTRMPBF LTC3307AHV#WTRPBF LTC3307AIV#TRMPBF LTC3307AIV#TRPBF LTC3307AIV#WTRMPBF LTC3307AIV#WTRPBF LTC3307AJV#TRMPBF LTC3307AJV#TRPBF LTC3307AJV#WTRMPBF LTC3307AJV#WTRPBF LTC3307AMPV#TRMPBF LTC3307AMPV#TRPBF
Text Version of Document
LTC3307A
APPLICATIONS INFORMATION
In addition, ensure that the saturation current rating A more conservative choice would be to use an inductor (typically labeled ISAT) of the inductor is higher than the with an ISAT rating higher than the maximum current limit maximum expected load current plus half the inductor of the LTC3307A. ripple current: To keep the efficiency high, choose an inductor with 1 I the lowest series resistance (DCR). The core material SAT > I ΔIL (6) LOAD M ( AX ) + 2 should be intended for high frequency applications. where I Table 2 shows recommended inductors from several LOAD(MAX) is the maximum output load current for a given application and ΔI manufacturers. L is the inductor ripple current calculated as: V ⎛ V ⎞ ΔI OUT OUT L = • ⎜1– ⎟ (7) L • fSW ⎝ VIN ⎠
Table 2. Recommended Inductors with Typical Specifications INDUCTOR MANUFACTURER FAMILY INDUCTANCE (nH) ITEMP (A)* ISAT (A) DCR (mΩ) W × L × H (mm)
Murata DFE18SAN-E0 240 3.2 4.2 36 1.6 × 0.8 × 0.8 Murata DFE18SAN-G0 240 3.5 4.9 30 1.6 × 0.8 × 1.0 Murata DFE201210S 110, 470 6.3, 4.0 11, 5.3 8, 27 2.0 × 1.2 × 1.0 Murata DFE201610E 240 to 680 5.5 to 3.7 7.0 to 4.8 16 to 36 2.0 × 1.6 × 1.0 Murata DFE201612E 240 to 680 6.0 to 4.1 7.8 to 4.8 13 to 27 2.0 × 1.6 × 1.2 Murata DFE252010F 330 to 680 5.6 to 4.1 7.6 to 5.5 16 to 31 2.5 × 2.0 × 1.0 Murata DFE252012F 330 to 680 6.0 to 4.6 8.5 to 6.0 14 to 25 2.5 × 2.0 × 1.2 Vishay IHHP-0806AB-01 220 to 470 5.3 to 4.2 5.8 to 4.4 13 to 29 2.0 × 1.6 × 1.2 Vishay IHHP-1008AB-01 220 to 680 7.4 to 3.8 7.1 to 4.1 8.4 to 28 2.5 × 2.0 × 1.2 XFRMS XFHCL43LT 220 to 470 8.0 to 4.5 7.0 to 3.8 13 to 25 (max) 2.5 × 2.0 × 1.2 NIC NPIM26LP 240 to 680 6.5 to 4.2 7.5 to 5.1 15 to 36 2.0 × 1.6 × 1.0 NIC NPIM20LP 240 to 680 6.0 to 4.4 9.5 to 5.5 18 to 32 2.5 × 2.0 × 1.0 Sumida 201610CDMCC/DS 240, 470 5.2, 3.8 6.5, 4.2 19, 34 2.2 × 1.8 × 1.0 Sumida 252010CDMCC/DS 330 to 1000 5.2 to 3.2 6.8 to 3.8 16 to 46 2.7 × 2.2 × 1.0 Wurth Electronik WE-PMMI-0805LP 110 3 6 24 2.0 × 1.2 × 0.6 Wurth Electronik WE-PMMI-0806 240 to 470 3.5 to 3.0 4.0 to 3.4 15 to 20 2.0 × 1.6 × 0.6 Wurth Electronik WE-PMCI-0806 240, 470 3.6, 2.9 5.4, 4.2 19, 34 2.0 × 1.6 × 1.0 Wurth Electronik WE-PMCI-1008 470 3.3 5 25 2.5 × 2.0 × 1.0 Wurth Electronik WE-LQS-2512 160 3.7 6.4 16 2.5 × 2.0 × 1.2 *Strongly depends on the PCB thermal properties Rev. A For more information www.analog.com 15 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
APPLICATIONS INFORMATION
In addition, ensure that the saturation current rating A more conservative choice would be to use an inductor (typically labeled ISAT) of the inductor is higher than the with an ISAT rating higher than the maximum current limit maximum expected load current plus half the inductor of the LTC3307A. ripple current: To keep the efficiency high, choose an inductor with 1 I the lowest series resistance (DCR). The core material SAT > I ΔIL (6) LOAD M ( AX ) + 2 should be intended for high frequency applications. where I Table 2 shows recommended inductors from several LOAD(MAX) is the maximum output load current for a given application and ΔI manufacturers. L is the inductor ripple current calculated as: V ⎛ V ⎞ ΔI OUT OUT L = • ⎜1– ⎟ (7) L • fSW ⎝ VIN ⎠
Table 2. Recommended Inductors with Typical Specifications INDUCTOR MANUFACTURER FAMILY INDUCTANCE (nH) ITEMP (A)* ISAT (A) DCR (mΩ) W × L × H (mm)
Murata DFE18SAN-E0 240 3.2 4.2 36 1.6 × 0.8 × 0.8 Murata DFE18SAN-G0 240 3.5 4.9 30 1.6 × 0.8 × 1.0 Murata DFE201210S 110, 470 6.3, 4.0 11, 5.3 8, 27 2.0 × 1.2 × 1.0 Murata DFE201610E 240 to 680 5.5 to 3.7 7.0 to 4.8 16 to 36 2.0 × 1.6 × 1.0 Murata DFE201612E 240 to 680 6.0 to 4.1 7.8 to 4.8 13 to 27 2.0 × 1.6 × 1.2 Murata DFE252010F 330 to 680 5.6 to 4.1 7.6 to 5.5 16 to 31 2.5 × 2.0 × 1.0 Murata DFE252012F 330 to 680 6.0 to 4.6 8.5 to 6.0 14 to 25 2.5 × 2.0 × 1.2 Vishay IHHP-0806AB-01 220 to 470 5.3 to 4.2 5.8 to 4.4 13 to 29 2.0 × 1.6 × 1.2 Vishay IHHP-1008AB-01 220 to 680 7.4 to 3.8 7.1 to 4.1 8.4 to 28 2.5 × 2.0 × 1.2 XFRMS XFHCL43LT 220 to 470 8.0 to 4.5 7.0 to 3.8 13 to 25 (max) 2.5 × 2.0 × 1.2 NIC NPIM26LP 240 to 680 6.5 to 4.2 7.5 to 5.1 15 to 36 2.0 × 1.6 × 1.0 NIC NPIM20LP 240 to 680 6.0 to 4.4 9.5 to 5.5 18 to 32 2.5 × 2.0 × 1.0 Sumida 201610CDMCC/DS 240, 470 5.2, 3.8 6.5, 4.2 19, 34 2.2 × 1.8 × 1.0 Sumida 252010CDMCC/DS 330 to 1000 5.2 to 3.2 6.8 to 3.8 16 to 46 2.7 × 2.2 × 1.0 Wurth Electronik WE-PMMI-0805LP 110 3 6 24 2.0 × 1.2 × 0.6 Wurth Electronik WE-PMMI-0806 240 to 470 3.5 to 3.0 4.0 to 3.4 15 to 20 2.0 × 1.6 × 0.6 Wurth Electronik WE-PMCI-0806 240, 470 3.6, 2.9 5.4, 4.2 19, 34 2.0 × 1.6 × 1.0 Wurth Electronik WE-PMCI-1008 470 3.3 5 25 2.5 × 2.0 × 1.0 Wurth Electronik WE-LQS-2512 160 3.7 6.4 16 2.5 × 2.0 × 1.2 *Strongly depends on the PCB thermal properties Rev. A For more information www.analog.com 15 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
