Document 313-1
For Maxim
Flat Wire Power Inductor MAX5051 Controller IC
Designed specifically for Maxim’s MAX5051 Power Supply
Controller, the A9860-B offers unmatched electrical perfor-
mance in an extremely robust, space saving package.
Withitsflatwirewindings,thisinductorhasextremelylowDC
resistance and offers very high saturation current ratings.
The flat core provides exceptional heat dissipation.
To request evaluation samples, contact Coilcraft or visit
www.coilcraft.com.
Part
number
L @ 0 A1
±20% (µH)
L @ 15.0 A1
±20% (µH)
DCR max
(mOhm)
SRF typ2
(MHz)
Isat3
(A)
Irms4
(A)
A9860-B
2.70
2.70
3.0
63.0
20.0
15.0
1. Inductance measured at 100 kHz, 0.1 Vrms, 0 Adc using a Coilcraft
SMD-D fixture in an Agilent/HP 4284A impedance analyzer.
4. Average current for a 45°C rise above 25°C ambient.
5. Electrical specifications at 25°C.
2. SRF measured using an Agilent/HP 8753D network analyzer and a
Coilcraft SMD-D test fixture.
See Qualification Standards section for environmental and test data.
3. DC current at which the inductance drops 10% (typ) from its value
without current.
A max
0.91
B max
0.85
C max
0.39
D
E
F
G
A
0.08
2,0
0.30
7,5
0.10 0.57
2,5 14,5
J
3
23,0
21,5
10,0
M
H
I
J
K
L
M
N
O
L
B
N
0.098 0.08
2,5 2,0
0.129
3,27
0.25
6,23
0.486 0.168 0.039 0.216
12,35 4,27 0,98 5,48
K
O
2
J
1
J
D
E
D
1
Recommended
Land Pattern
2
3
Terminal 3 is for mounting stability only.
Do not connect to ground or other circuits.
C
0.003/0,076
F
G
I
H
Specifications subject to change without notice. Document 313-1 Revised 09/19/03