SP6644EU SIPEX [Sipex Corporation], SP6644EU Datasheet - Page 7

• Manufacturer Part Number: SP6644EU
• Description: Single/Dual Alkaline Cell, High Efficiency Step-Up DC-DC Converter
• Manufacturer: SIPEX [Sipex Corporation]

Refer to the circuit in Figure 28, T
Figure 25. Shutdown Response and Inductor Current,
Vout=3.3V, Vbatt=1.3V, Rlim=2.5k, Rload=550 Ohms,
Li=22uH Sumida CD43
Rev:B Date 4/13/04
Table 1. SP6644/6645 Pin Descriptions
B
N
S
A
V
G
V
R
A
H
F
T
L
B
N
O
M
A
I L
D
B
X
T
U
T
M
D
T
L
T
N
E
O
B
R
F
P
O
2
g
A
e
o
C
C
h t
t l i f
V
o r
e
x
u
t a
o
e
c
o
o
p
e
e t
r e
e
p t
v i t
w
s
n
. l i
e
e t
u
f
d
- P
t s i
r o
n
- n
n r
r e
t u
n
e
b
c
y r
e
d
A
C
D
r o
L -
a
a
l a
t c
h t
o
O
n
p
k c
S
p
h
a r
O
p
e
a
e r
u
P
o r
o t
a
u
n i
r e
n i
t i c
W
p t
o r
n
p
n I
S
s
g
d
t a
n
AMB
p
h t
t s i
u
P
r o
a r
u
B
g
p
S
l e
. y l
. t
o i
6
e
t c
a r
u
t a
r o
m
h
= +25
6
c
. t
. n
y s
r o
u
o l
m
e t
F
4
o l
s
T
d t
v
w
e
5
m
n I
n
y r
s
h t
l o
h
s i
e
,
o
o
c
e
e
C, unless otherwise noted.
s i
a
p
d
a t
B
e
w
h
L
t s
c
b
u
b
o t
o r
o
A
o
p
n
g
e l
n i
f t
a
i c
w
n
n i
e
T
n
k c
V
d
n I
r o
n
c r
T
n I
o
u
d
O
O
t
e
p
L
u
e i
U
SP6644/6645 High Efficiency Boost Regulator
t c
v i
u
d
n i
a
c
u
u
O
- s
T
t i
u
s
d i
e t
.
r o
d
. t
p t
p
t c
e r
u j
p
u
o t
s
r e
d
SDN
2V/div
Li
0.5A/div
V
1V/div
u
r o
p
C
o
n i
f t
s
c
OUT
. t
f
e t
e
h t
a t
o r
i f i t
o
b
s k
r o
a
P
n
e
t n
, V
W
b
e
m
k
r e
e
n
w t
e l
c
x i f
a i
BATT
s
h
a
e
c
r u
V
o -
e
e
d
e
k
r u
t c
, l
e
F
n
e
B
a r
e r
n
d
u
y t
C
A
U
e r
n
s
o t
T
p t
n i
h t
n
r o
r u
p
T
3
N
t n
V
. t
t u
c i
3 .
V
o t
7
e
C
h t
e r
O
n i
a
B
w
U
V
I T
v
o r
A
o
n
T
y l l
h t
p
l o
h
T
p
. t
o
O
T
a
Figure 26. Pinout for the SP6644/6645
t u
u
e
e
a t
r e
p
n
g
f
g
N
e r
r o
C
r e
N
d
BATTLO
f o
g
o r
PERFORMANCE CHARACTERISTICS
t a
h
e
o
-
t a
G
o i
u
h t
I
n
C
h t
n
SHDN
PEAK
d
n
r o
o i
N
h
n
. n
s i
RLIM
e
o r
. d
a
V
e
. D
n
m
t c
n
i p
B
p
BATT
=
C
a
l a
n
s
A
. n
n i
n
o
l e
C
T
b
g
o
d
n
o
T
e
p
n
M
a
n
C I
L
o l
r e
e
2
1400
n
O
1
3
4
O
R
e r
t c
w
t a
e
p
S
LIM
t c
s
c
o
1
o i
h t
F
s i
o
w
V
E
. n
o t
s i
m
o t
r e
T
SP6644
SP6645
f
p
r o
f r
n i
G
a
s
n i
p
N
o r
w
a r
h t
p
t u
© Copyright 2004 Sipex Corporation
D
c t i
m
u
o t
e
PIN DESCRIPTION
. t
p
f
h
. r
S
r o
h t
n i
P
d
C
s i
x i f
a r
o t
6
o
6
p
n
n i
e
a
4
n i
n
- d
n
4
e
a
8
7
6
5
o t
t c
n
r o
d
V
GND
FB
LX
OUT
P
N I
2
3
4
5
6
7
8
1
N
O
.