sp6645eu-tr Exar Corporation, sp6645eu-tr Datasheet - Page 9
sp6645eu-tr
Manufacturer Part Number
sp6645eu-tr
Description
Sp6645 -single/dual Alkaline Cell, High Efficiency Boost Dc-dc Regulator
Manufacturer
Exar Corporation
Datasheet
1.SP6645EU-TR.pdf
(15 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SP6645EU-TR
Manufacturer:
EPCOS
Quantity:
4 000
Date: 11/30/04
Figure 27. Internal Block Diagram of the SP6644/6645
SHDN
V
BATT
FB
+1.0V (SP6644)
+2.0V (SP6645)
V
REF
+1.25V
REFREADY
SP6644
SP6645
+1.0V (SP6644)
+2.0V (SP6645)
SP6644/6645 High Efficiency Boost Regulator
LOGIC DRV-P
DRV-N
START
OSC
UP
Damping
Inductor
9
Switch
N
N
GND
N
P
DISCHARGE
CHARGE
V
LPK
I-Discharge
I-Charge
© Copyright 2004 Sipex Corporation
BLOCK DIAGRAM
BATTLO
V
LX
OUT
R
LIM
R
LIM
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