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SP6644 Datasheet(PDF) 9 Page - Sipex Corporation

Part # SP6644
Description  Single/Dual Alkaline Cell, High Efficiency Boost DC-DC Regulator
PDF  15 Pages
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Manufacturer  SIPEX [Sipex Corporation]
Direct Link  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP6644 Datasheet(HTML) 9 Page - Sipex Corporation

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Date: 11/30/04
SP6644/6645 High Efficiency Boost Regulator
© Copyright 2004 Sipex Corporation
Figure 27. Internal Block Diagram of the SP6644/6645
SHDN
LOGIC
DRV-P
DRV-N
FB
VBATT
PDISCHARGE
VOUT
LX
+1.0V (SP6644)
+2.0V (SP6645)
VREF
BATTLO
START
UP
OSC
NCHARGE
N
SP6644
SP6645
N
Inductor
Damping
Switch
I-Discharge
I-Charge
REFREADY
+1.0V (SP6644)
+2.0V (SP6645)
VLPK
GND
+1.25V
RLIM
RLIM
BLOCK DIAGRAM



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