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Cx Family Common Mode Chokes
0402CT Low Profile Chip Inductors
XAL7050 High-inductance Shielded Power Inductors
XGL4020 Ultra-low DCR Power Inductors

7 Watt PoE Transformers

for TI LM5070

RoHS compliant
  • Developed for Texas Instruments LM5070 PoE Interface
  • IEEE 802.3af compliant for 7 W PoE applications
  • Industry standard EP10 surface mount package
  • Three different output current and voltages
  • Designed to operate in continuous mode at 250 kHz with input voltage of 36 – 72 Vdc

Buy Now:
Count Unit price
1 $3.32
250 $2.86
500 $2.49
1000 $1.93
2500 $1.67
5000 $1.53

For high volume or non-stock items, request a quote.

. in stock, ready to ship today.
Request a Sample:

Typical Application

Works with Texas Instruments LM5070

Part number Input Voltage Output 1 Power Fsw
Sec Bias
C1587-AL_ 36 V 72 V 3.3 V , 2.12 A 12 V , 0.02 A 7 W 250 kHz
C1588-AL_ 36 V 72 V 5 V , 1.4 A 12 V , 0.02 A 7 W 250 kHz
C1589-AL_ 36 V 72 V 12 V , 0.6 A 12 V , 0.02 A 7 W 250 kHz

Specifications

Electrical specifications at 25°C.

Part number 2
(Hover for schematics)
Inductance
at 0A (µH) 3
(Tolerance: ±10%)
Inductance
min at   0.65 A (µH)
DCR max (Ω) 4 Leakage
Inductance
max (µH) 5
Turns Ratio 6 Isolation
Voltage (Vrms) 7
Pri Sec Bias Pri : Sec : Bias
C1587-AL_ 155.0 139.5 0.414 0.036 0.822 4.0 1 : 0.19 : 0.667 1500
C1588-AL_ 155.0 139.5 0.414 0.060 0.822 3.6 1 : 0.262 : 0.667 1500
C1589-AL_ 155.0 139.5 0.414 0.343 0.822 3.3 1 : 0.667 : 0.667 1500
Notes
  1. Output of the secondary is with the windings connected in parallel. Bias winding output is 12 V, 20 mA.
  2. When ordering, please specify packaging code: e.g. C1589-ALD
  3. Inductance is for the primary, measured at 10 kHz, 0.1 Vrms, 0 Adc.
  4. DCR for the secondary is per winding.
  5. Leakage inductance measured between pins 3 and 4 with all other pins shorted.
  6. Turns ratio is with the secondary windings connected in parallel.
  7. 1500 Vrms isolation from primary and bias to secondary.

Termination:

  • RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations. Other terminations available at additional cost.

Packaging:

  • D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
  • B = Less than full reel. In an effort to simplify our part numbering system, Coilcraft is eliminating the need for multiple packaging codes. When ordering, simply change the last letter of your part number from B to D.
Environmental
Environmental:
RoHS compliant
Ambient temperature range:
–40°C to +85°C
Storage temperature range:
Component: –40°C to +85°C
Tape and reel packaging: –40°C to +80°C
Failures in Time (FIT) / Mean Time Between Failures (MTBF):

Schematics

lm5070_ep7s.gif
Secondary windings to be connected in parallel on PC board

Physical characteristics

lm5070_ep10d.gif

Tape and Reel specification

tapereel_pl.gif

 
Parts per reel Reel dimensions (mm) Tape dimensions (mm) Orientation
13" (330 mm) A B C D E W P Po P1 H T part_or_f.gif
200 (C1588/1589-AL) 330 100 13 38,4 32,4 32 24 4 2 11,2 0,5
250 (C1587-AL) 330 100 13 38,4 32,4 32 20 4 2 11,2 0,5

General specification

Core Material:
Ferrite
Weight:
3.85 g
Packaging:
C1587-AL : 250 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick, 20 mm pocket spacing, 11.2 mm pocket depth
C1588/C1589-AL : 200 per 13″ reel Plastic tape: 32 mm wide, 0.5 mm thick, 24 mm pocket spacing, 11.2 mm pocket depth

Soldering/Washing

Moisture Sensitivity Level (MSL):
1 (unlimited floor life at <30°C / 85% relative humidity)
Resistance to soldering heat:
Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles
Refer to Soldering Coilcraft Components before soldering.
PCB Washing:
Tested with pure water or alcohol only. More info.

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