LPR6235_13 Datasheet, PDF (1/2 Pages) Coilcraft lnc. – For Step-Up, Resonant & Flyback Applications

Document 752-1
Coupled Inductors –
LPR6235
For Step-Up, Resonant
& Flyback Applications
• Can be used as step-up or flyback transformers in DC-DC
converters or as autotransformers
• Perfect for low voltage step-up in energy harvesting applications
• Selected by Linear Technology for the LTC3108 and LTC3109
Ultralow Voltage Step-Up Converter and Power Managers
These shielded parts are only 3.5 mm high and 6 mm
square. The excellent coupling coefficient (k = 0.95)
makes them ideal for use in a variety of applications.
They can be used as flyback transformers and step-up
pulse transformers.
The high Isat and low DCR ratings of these parts provide
high efficiency and excellent current handling in a rug-
ged, low cost design.
Custom inductance values and turn ratios may be avail-
able upon request.
Primary (L1) ^{DCR max}
Part
Turns ^  inductance^{2 (Ohms)}
  _number1
ratio ±20% (µH) L1  L2
LPR6235-253LML_ 1 : 10
25
0.74 13.7
LPR6235-253PML_ 1 : 20
25
0.20 72
LPR6235-123QML_ 1 : 50
12.5 0.085 200
LPR6235-752RML_ 1 : 90
7.5 0.085 275
LPR6235-752SML_ 1 : 100
7.5 0.085 316
SRF
  _typ3   _Isat4
(kHz) (A)
1300 1.3
580 0.7
360 0.9
257 1.6
230 1.6
1. When ordering, please specify packaging code:
LPR6235-253PMLC
Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic tape
(350 parts per full reel).
B = Less than full reel. In tape, but not machine ready. To
have a leader and trailer added ($25 charge), use code
letter D instead.
D = 13″ machine-ready reel. EIA-481 embossed plastic
tape. Factory order only, not stocked (1500 parts per full
reel).
2. Inductance is measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP
4284A LCR meter or equivalent.
3. SRF measured using an Agilent/HP 4191A or equivalent.
4. DC current applied to L1, at which the inductance drops 10% from its value
without current.
5. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
V_IN
C
+
V_IN
–
C
D
L1
L2
C
D
Sync
Rectifier
Typical Step-Up Converter
L1
C
PWM
D
L2
C
Typical Flyback Converter
V_OUT
+
V_OUT
–
US [phone] [e-mail]
UK [phone] [e-mail]
Taiwan [phone] [e-mail]
China [phone] [e-mail]
Singapore + 65-6484 8412 [e-mail]
Document 752-1  Revised 09/24/13
© Coilcraft Inc. 2013
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.