SP6648 Datasheet, PDF (10/16 Pages) Sipex Corporation – Ultra-low Quiescent Current, High Efficiency Boost Regulator

APPLICATIONS INFORMATION: Continued
INDUCTORS - SURFACE MOUNT
Inductance
(µH)
10
10
10
Manufacturer/Part No.
Sumida CDRH5D28-100
TDK RLF5018T-100MR94
Sumida CD43-100
Series R
Ω
0.065
0.067
0.180
Inductor Specification
I_SAT
Size LxWxH Intuctor Type
(A)
(mm)
1.30
5.7x5.5x3.0 Shielded Ferrite Core
0.94
5.6x5.2x2.0 Shielded Ferrite Core
1.04
4.0x4.5x3.5 Unshileded Ferrite Core
Manufacturer
Website
www.sumida.com
www.tdk.com
www.sumida.com
22
Sumida CDRH5D28-220 0.122
0.90
5.7x5.5x3 Shileded Ferrite Core
www.sumida.com
22
TDK RLF5018T-220MR63 0.067
0.63
5.6x5.2x2.0 Shielded Ferrite Core
www.tdk.com
22
Sumida CD43-220
0.378
0.68
4.0x4.5x3.5 Unshielded Ferrite Core
CAPACITORS - SURFACE MOUNT & LEADED
www.sumida.com
Capacitor Specification
Capacitance Manufacturer Part No.
(µF)
ESR Ripple Current Size LxWxH Voltage
Ω(max) (A) @ 85°C
(mm)
(V)
47
Kemet T494C476K010AS 0.300
1.06
6.0x3.2x2.5 10
Capacitor
Type
SMT Tantalum
Manufacturer
Website
www.kemet.com
47
Kemet T494V476K010AS 0.300
0.99
7.3x4.3x2.0 10
SMT Tantalum
www.kemet.com
100
Sanyo 25MV100AX
0.220
0.30
6.3DX11L
25 Radial Al Electrolytic www.sanyovideo.com
Note: Components highlighted in bold are those used on the SP6648EB Evaluation Board.
Component Selection Table
V_BATT
L1 10µH
R₃
549K
C1
+
47µF
R₄ LBON
249K
R₅ 1.0M
U1 SP6648
1 _VBATT
2
LBI
3
LBON
4
R_LIM
5 _SHDN
V_OUT ¹⁰
9
LX
8
P_GND
7
GND
FB ⁶
R_LIM
1.87K
3.3V_OUT
C4
1µF
R₁
205K
C3 ⁺ C2
47pF 47µF
R₂
124K
SP6648EB Evaluation Board Schematic
Date: 7/19/04
SP6648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
10
© Copyright 2004 Sipex Corporation