SP7648ER-L/TR [SIPEX]
Switching Regulator, Voltage-mode, 2A, 3 X 3 MM, LEAD FREE, MO-229VEED-5, DFN-10;
| 型号： | SP7648ER-L/TR |
| 厂家： | 
SIPEX CORPORATION |
| 描述： | Switching Regulator, Voltage-mode, 2A, 3 X 3 MM, LEAD FREE, MO-229VEED-5, DFN-10 |
| 文件： | 总13页 (文件大小：592K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Solved by
SP7648
TM
Low Rꢀfꢀrꢀncꢀ High efficiꢀncy Boost Rꢀgulꢁtor
FeaTUReS
■ True Shutdown
V
ꢀ0
9
V
OUT
ꢀ
2
3
4
5
BATT
FLASH
LX
SP7648
■ 700mA Output Current at 3.3V Input; 4.2V
8
NC (Test)
P
GND
10 Pin DFN
output
R
7
GND
LIM
■ 92% Efficiency from 2.7V IN to 3.3VOUT
■ Wide Input Voltage Range: 2.7V to 4.5V
■ 5V Fixed or Adjustable Output
■ 0.3 1 Switch
SHDN
6
FB
Now Available in Lead Free Packaging
■ Integrated Synchronous Rectifier:0.3 1
■ Anti-Ringing Switch Technology
■ Programmable Inductor Peak Current
■ Logic Shutdown Control
■ Low 0.8V or 0.288V Reference Voltage
■ Small 10 pin DFN or MSOP Package
aPPLꢂꢃaTꢂOꢄS
■ LED Driver
■ Camera Flash
■ Handheld Portable Devices
DeSꢃRꢂPTꢂOꢄ
The SP7648 is an ultra-low quiescent current, high efficiency step-up DC-DC converter ideal for
single cell Li-Ion or dual cell alkaline battery applications to drive various LEDs. The SP7648
combines low quiescent current and excellent light-load efficiency of PFM control. The SP7648
featuressynchronousrectification,a0.31 chargingswitch,ananti-ringinginductorswitch, under-
voltage lockout and programmable inductor peak current. The device can be shut down by a
1nA active LOW shutdown pin. A very low 0.288V reference voltage is optimized for driving a
constant current load.
TYPꢂꢃaL aPPLꢂꢃaTꢂOꢄ ꢃꢂRꢃUꢂT
4.7µH
Vꢂꢄ
(2.7 - 4.5V)
ꢀ0µF
®
VBATT
LX
SP7648
Oꢄ/OFF
SHDN
RLIM
VOUT
ꢀ0µF
0.331
NC
470pF
FLASH
FB
PGND
RLIM
GND
1.0K1
Dꢀ
1K1
R2
Qꢀ
Rꢀ
FLaSH
Mar16-06 Rev B
SP7648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
© 2006 Sipex Corporation
ꢀ
aBSOLUTe MaXꢂMUM RaTꢂꢄꢅS
Operating Temperature ................................................ -40°C to +85°C
ESD Rating ........................................................................ 1.5kV HBM
LX, Vo, VBATT, FLASHOUT, FB to GND pin ...................... -0.3 to 6.0V
SHDN, FLASH ..................................................... -0.3V to VBATT+1.0V
Vo, GND, LX Current ....................................................................... 2A
Reverse VBATTCurrent .............................................................. 220mA
Forward VBATTCurrent .............................................................. 500mA
Storage Temperature .................................................. -65 °C to 150°C
These are stress ratings only and functional operation of the device at
these ratings or any other above those indicated in the operation sections
of the specifications below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect reliability.
eLeꢃTRꢂꢃaL SPeꢃꢂFꢂꢃaTꢂOꢄS
VBATT =VSHDN = 3.6V, VFB=ZeroV, ILOAD = 0mA, TAMB= -40°C to +85°C, VOUT = 5.0V, typical values at 27°C unless
otherwise noted. The z denotes the specifications which apply over full operating temperature range -40ºC to +85°C, unless
otherwise specified.
PaRaMeTeR
Mꢂꢄ
2.7
2.7
0.5
4.6
-
TYP
-
MaX UꢄꢂTS
z
z
z
ꢃOꢄDꢂTꢂOꢄS
Input Voltage Operating Range, VBATT
Output Voltage Range, VOUT
Under Voltage Lock-out/UVLO
Output Voltage, VO
4.5
5.5
0.7
5.4
500
750
-
V
V
After Startup
-
0.61
5.0
ꢀ
V
z
V
z
z
z
-
Internal Feedback Divider
VSHDN = ZeroV
Shutdown Current into VO, ISDO
Shutdown Current into VBATT, ISDB
Efficiency
nA
nA
%
-
250
92
VSHDN = ZeroV, VBATT = 2.7V
VBATT = 2.7V, IOUT = 200mA, RLIM = 2k1
650
800
ꢀ600
ꢀ000
mA
mA
z
z
RLIM = 2k1, IPK = 1600/RLIM
RLIM = 1k1, IPK = 1600/RLIM
Inductor Peak Current Limit, IPK
Output Current (Note 2)
-
-
-
800
400
200
-
-
-
mA
mA
mA
-
-
-
VBATT = 2.7V, RLIM =1k1
VBATT = 2.7V, RLIM =2k1
VBATT = 2.7V, RLIM = 4k1
Minimum Off-Time Constant KOFF
Maximum On-Time Constant KON
Enable Valid to Output Stable (Note 3)
NMOS Switch Resistance
0.5
1.0
3.5
1.5
5.0
500
0.6
0.6
V*µs
V*µs
µs
z
z
-
K
OFF )T OFF (VOUT - VBATT
)
2.0
KON *T ON (VBATT
)
-
-
-
300
0.30
0.30
ILOAD = ꢀmA
1
z
z
INMOS = ꢀ00mA
IPMOS = ꢀ00mA
PMOS Switch Resistance
1
0.76
0.266
0.8
0.288
0.84
0.310
V
V
z
z
External feedback Flash = 0
External feedback Flash = 1
FB Set Voltage, VFB
FB Input Current
-
ꢀ
ꢀ00
nA
z
VFB =1.3V
SHDN Input Voltage (Note 1)
VIL
VIH
-
-
-
0.5
-
V
z
z
VBATT = 2.7V
VBATT = 2.7V
2.0
SHDN Input Current
LX Pin Leakage
-
-
ꢀ
-
ꢀ00
nA
z
3
µA
-
V IL
VIH
-
-
-
0.4
-
V
V
FLASH Threshold
1.0
ꢄotꢀ 1:SHDN must transition faster than 1V/100mS for proper operation.
VIN
VOUT
Inductor Ripple Current
ꢄotꢀ 2:Output Current I =
X Efficiency x Inductor Peak Current -
}
{
}
{
2
ꢄotꢀ 3:Guaranteed by Design.
Mar16-06 Rev B
SP7648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
© 2006 Sipex Corporation
2
Pꢂꢄ DeSꢃRꢂPTꢂOꢄ
Pꢂꢄ ꢄUMBeR
Pꢂꢄ ꢄaMe
DeSꢃRꢂPTꢂOꢄ
Battery Voltage. The startup circuitry is powered by this pin. Battery
Voltage is used to calculate switch off time: TOFF= K OFF/ (VOUT
1
VBATT
-
VBATT). When the battery voltage drops below 0.61V the SP7648
goes into an undervoltage lockout mode (UVLO), where the part is shut
down.
2
3
4
FLASH
NC (Test)
RLIM
Reference Control Input. Internal Reference defaults to 0.8V if FLASH
= LOW and 0.288V if FLASH = HIGH.
No connection. This pin is bonded out for test purposes only and
must be left floating in all applications.
Current Limit Resistor. By connecting a resistor RLIM from this pin to
ground the inductor peak current is set by IPEAK=1600/RLIM. The range
for RLIM is 9k1(for 180mA) to 1.K 1(for 1.6A).
5
6
SHDN
FB
Shutdown Not. Tie this pin high to V BATT,for normal operation. Pull
this pin to ground to disable all circuitry inside the chip.
Feedback. Connect this pin to GND for fixed +5V operation. Connect
this pin to a resistor voltage divider between VOUTand GND for
adjustable output operation.
7
8
9
GND
PGND
LX
Ground. Connect to ground plane.
Power Ground. The inductor charging current flows out of this pin.
Inductor Switching Node. Connect one terminal of the inductor to the
positive terminal of the battery. Connect the second terminal of the
inductor to this pin. The inductor charging current flows into LX,
through the internal charging N-channel FET, and out the PGND pin.
10
VOUT
Output Voltage. The inductor current flows out of this pin during
switch off-time. It is also used as the internal regulator voltage supply.
Connect this pin to the positive terminal of the output capacitor.
Note that the Thermal Pad (Pin 11) should be connected to Ground.
Mar16-06 Rev B
SP7648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
© 2006 Sipex Corporation
3
FUꢄꢃTꢂOꢄaL DꢂaꢅRaM
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Mar16-06 Rev B
SP7648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
© 2006 Sipex Corporation
4
THeORY OF OPeRaTꢂOꢄ
DetailedDescription
devices,theinductorandinput&outputfilter
capacitors should be soldered with their
ground pins as close together as possible in
a star-ground configuration. The VOUT pin
must be bypassed directly to ground as
close to the SP7648 devices as possible
(within0.2inor5mm). TheDC-DCconverter
and any digital circuitry should be placed on
the opposite corner of the PC board as far
away from sensitive RF and analog input
stages. Noisy traces, such as from the LX
pin, should be kept away from the voltage-
feedback VFB node and separated from it
using grounded copper to minimize EMI.
See the SP7648EB Evaluation Board
ManualforPCBoard Layoutdesigndetails.
The SP7648 is a step-up DC-DC converter
with an input voltage operation range from
2.7V to 4.7V. In addition to the main 0.31
internal NMOSFET switch the SP7648 has
an internal synchronous rectifier, thereby
increasing efficiency and reducing the
space and cost of an external diode. An in-
ternal inductive-damping switch significantly
reduces inductive ringing for low noise-high
efficiency operation. If the supply voltage
drops below 0.61V the SP7648 goes into
under voltage lockout, thus opening both in-
ternal switches. The inductor peak current is
externally programmable to allow for a
range of inductor values.
Circuit Layout
Control Scheme
Printed circuit board layout is a critical part
of a power supply design. Poor designs can
resultinexcessiveEMIonthefeedbackpaths
and on the ground planes with applications
involving high switching frequencies and
large peak currents. Excessive EMI can
result in instability or regulation errors. All
power components should be placed on
the PC board as closely as possible with the
traces kept short, direct, and wide (>50mils
or 1.25mm). Extra copper on the PC board
shouldbeintegratedintogroundasapseudo-
ground plane. On a multilayer PC board,
route the star ground using component-
side copper fill, then connect it to the internal
ground plane using vias. For the SP7648
A minimum off-time, current limited pulse
frequency modulation (PFM) control
schemecombinesthehighoutputpowerand
efficiency of a pulse width modulation
(PWM) device with the ultra low quiescent
currentofthetraditionalPFM. Atlowtomod-
erate output loads the PFM control provides
higher efficiency than traditional PWM con-
verters are capable of delivering. At these
loads the switching frequency is determined
by a minimum off-time (TOFF, MIN) and a
maximum on-time (TON, MAX) where:
TOFF < KOFF / (VOUT - VBATT
TON > KON / VBATT
KOFF = 1.0Vµs
)
KON = 3.5 Vµs
Mar16-06 Rev B
SP7648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
© 2006 Sipex Corporation
5
THeORY OF OPeRaTꢂOꢄ
current limit is not reached as shown in plot
C in Figure 1. The inductor peak current
limit can be programmed by tying a resistor
RLIM
At light loads (as shown in plot A in Figure 1)
ftoher tcOhNa:rgFeocryacl3eVwibllalattsetrtyhethmisawxiomuuldmbvealuaes
follows: TON= K ON/ V BATT= 3.5V µS/ 3V =
1.17µS.Thecurrentbuiltupinthecoilduring
the charge cycle gets fully discharged in the
discontinuous conduction mode (DCM).
When the current in the coil has reached
zero, the synchronous rectifier switch is
openedandthevoltageacrossthecoil(from
VBATTto LX) is shorted internally to eliminate
inductive ringing. With increasing load (as
shown in plot B in Figure 1) this inductor
damping time becomes shorter, because
the output will quickly drop below its regula-
tion point due to heavier load. If the load
current increases further, the SP7648 en-
ters continuous conduction mode (CCM)
where there is always current flowing in the
inductor. The charge time remains at maxi-
mum TONas long as the inductor peak
from the RLIM pin to ground where:
IPEAK = 1600 / RLIM
When the peak current limit is reached the
charge time is short-cycled. In plot D of
Figure 1, the switch current reaches the
peak current limit during the charge period
which ends the charge cycle and starts
thedischargecycle. However, fullloadisnot
yet achieved because at the end of the
minimum discharge time the output was still
within regulation. Maximum load is reached
when this discharge time has shrunk to
the minimum allowed value TOFFas shown
in Plot E of Figure 1.
ComponentSelection
Selection of capacitors for SP7648 power
supply circuits can be made through the use
of the Component Selection Table. Capa-
citor equivalent series resistance (ESR) in
the range of 0.2 to 0.31is a requirement for
obtaining sufficient output voltage ripple for
theSP7648toproperlyregulateunderitsload.
Forexample,intheSP7648applicationcircuit
a ꢀ0µF, 10V, X5R, surface mount ceramic
outputfiltercapacitorisused.Ceramiccapa-
citorshaveanESRtoolowtoproduceenough
output ripple for the SP7648 to regulate the
output;therefore,a0.331 resistorisadded
in series with the ꢀ0µF capacitor at the VOUT
pin.Designersshouldselectinputandoutput
capacitorswitharatingexceedingtheinductor
current ripple, which is typically set by the
inductor value and the KONvalue as given in
the following relationship:
ꢂnductor ꢃurrꢀnt vs. Loꢁd
llim
e
Ton Max.
Toff Min.
E. Iripple=Toff* (Vo - Vi)/L
llim
llim
llim
llim
Ton Max.
D
Toff Min.
D. Toff*= (Vo - Vi)/L<Iripple<Ton*Vi/L
Ton Max. Toff Min.
C. Iripple=Ton*Vi/L
B. Iripple=Ton*Vi/L
A. Iripple=Ton*Vi/L
ꢃ
B
Ton Max.
Toff Min.
Ton Max. Toff Min.
a
Figure 1. Inductor Current vs. Load
I
L(RIPPLE) = KON/L, where KON = 3.5V*µS
Mar16-06 Rev B
SP7648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
© 2006 Sipex Corporation
6
THeORY OF OPeRaTꢂOꢄ
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EBEvaluationBoard.
Table 1: Component Selection
For the example, a 10µH inductor would
have an inductor current ripple of 350mA,
while a 4.7µH inductor would have an in-
ductorcurrentripplevalueof740mA.Donot
allow tantalum capacitors to exceed their
ripple-current ratings. An input filter capaci-
tor can reduce peak currents drawn from
the battery and improve efficiency. For
most applications, use the same capacitor
for the input and output.
Low-ESR tantalum capacitors are accept-
able provided they meet the ESR require-
ment of 0.21 to 0.31. In selecting an
inductor, thesaturationcurrentspecifiedfor
the inductor needs to be greater than the
SP7648 peak current to avoid saturating
the inductor, which would result in a loss of
efficiency and could damage the inductor.
TheSP7648evaluationboardusesaWurth
4.7µH inductor with an ISAT value of 1.7A
and a DCR of 0.0651, which handles the
IPEAK of 1.6A of the SP7648 and will deliver
high efficiencies. Other inductors could be
selected provided their ISAT is greater than
the IPEAKof the SP7648.
V UT Programming
O
The SP7648 can be programmed as either
a voltage source or a current source. To
program the SP7648 as voltage source, the
SP7648 requires 2 feedback resistors R1 &
R2 to control the output voltage. To set VOUT
in the voltage mode, use the equation:
R1 = [(VOUT/0.8)-1] * R2, where flash < 0.4V,
R1 = [(VOUT/0.288)-1] * R2, where flash > 1.0V
Usingthe R Function
LIM
The peak inductor current, IPEAK, is pro
grammed externally by the RLIM resistor
connected between the RLIM pin and GND.
The peak inductor current is defined by:
IPEAK= 1600/R LIM
The saturation current specified for the in-
ductor needs to be greater than the peak
Mar16-06 Rev B
SP7648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
© 2006 Sipex Corporation
7
THeORY OF OPeRaTꢂOꢄ
the LED. To set the operating current to be
about 200mA in torch mode, the flash pin is
forced low, R2 is selected as 0.8V/ 0.2 = 41,
asshowninthetypicalapplicationcircuit.To
set the operating current to 700mA in flash
mode, the flash pin is forced high, R is
selected as 0.288V/0.411 = 700mA. In real-
ity R in Flash includes the series MOSFET
current to avoid saturating the inductor,
which would result in a loss in efficiency and
could damage the inductor. The SP7648
evaluation board uses a RLIM value of 1K1
for an IPEAK = 1.6A to allow the circuit to
deliver up to 700mA for VIN = 3.3V and VOUT
=4.2V. Othervaluescouldbeselectedusing
the above relationships.
RDSON and the parallel combination of R
41 shown by the formula:
2 =
UsingtheFLASHControlPin
{
}
)
R
ꢀ
X (R
+ R
2
+ Q
+ Q
ꢀ
R
R
DSON
The SP7648 will regulate the output by the
equations above depending on the state of
the FLASH pin. When the FLASH pin is
low (<0.4V), the internal reference voltage
is defined as 0.8V. When the FLASH pin is
high (>0.4V), the internal reference voltage
is defined as 0.288V. This allows the use of
smaller values for the sense resistor for
current regulation mode. This improves ef-
ficiency and reduces the physical size of the
sense resistor. An external MOSFET switch
can be used to change the sense resistor
when changing to the Flash Mode.
R in Flash =
{R
ꢀ
2
ꢀ
DSON
}
If the SP7648 is powered up before the LED
is plugged in, the circuit will bring the feed-
back pin to ZeroV and the SP7648 has a
feature to set the output voltage to be 5V.
Once the LED is plugged in, the feedback
pinwillgoupto0.8Vintorchmodeor0.288V
in flash mode and begin to regulate. The
output voltage will go from 5V to VF+VFB
,
where VF is the forward voltage of the LED.
When the LED is open, the feedback pin
voltage will go to ZeroV and the output
voltage will go to 5V which will protect the
part from overvoltage at the output.
HighBrightnessWhiteLED
One approach to control LED brightness is
to apply a PWM signal to the SHDN input of
the SP7648. In this case, the output current
will be equal to the product of VREF/R1 and
the average duty cycle at the SHDN pin. An
optional 10K1 potentiometer may also be
usedfordimmingtheLEDcurrentbyvarying
the potentiometer between low brightness
and full brightness.
For the high brightness LumiLED white LED
application, the SP7648 is generally pro-
grammed as a current source. The bias
resistors R1 and R2 are used to set the
operating current of the white LED with the
equation:
R = VFB/IF
where VFB is 0.8V in torch mode and 0.288V
in flash mode, IF is the operating current of
If the FB pin is pulled below 150mV the
output will default to 5V defined by an inter-
nal resistor divider.
Mar16-06 Rev B
SP7648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
© 2006 Sipex Corporation
8
TYPꢂꢃaL PeRFORMaꢄꢃe ꢃHaRaꢃTeRꢂSTꢂꢃS
S
P7648forLuxeonI
S
P7648forLuxeonI
8
0
0
1
0
0
FlashMo
d
e,
7
0
0
Vf=3.6
V
90
T
orchMo
d
e,
6
5
0
0
Vf=3.2V
0
0
FlashMo
d
de,
e,
80
Vf=3.6
V
Vf=3.2V
4 0
3
0
T
orchMo
70
0
0
2
0
0
60
1 0
0
0
50
3.0
3.2
3.4
3.6
3.8
4.0
4.2
3.0
3.2
3.4
3.6
3.8
4.0
4.2
Vin(V)
Vin(V)
S
P7648forAOT(2015H
P
W1915B)
S
P7648forAOT(2015H
P
W1915B)
8
0
0
1
0
0
FlashMo
d
e,
7
0
0
Vf=3.9
V
90
T
orc
h
6
0
0
Mo
d
e,Vf=3.3
V
5
0
0
80
FlashMode,
Vf=3.9V
4
0
0
TorchMode,
Vf=3.3V
70
3
0
0
2 0
0
60
1
0
0
0
50
3.0
3.2
3.4
3.6
3.8
4.0
4.2
3.0
3.2
3.4
3.6
3.8
4.0
4.2
Vin(V)
Vin(V)
SP7648forAOT(6060HPW0305BD)
SP7648forAOT(6060HPW0305BD)
600
500
400
300
200
100
0
100
90
80
70
60
50
FlashMode,
Vf=4.2V
TorchMode,
Vf=3.5V
FlashMode,
Vf=4.2V
TorchMode,
Vf=3.5V
3.0
3.2
3.4
3.6
3.8
4.0
4.2
3.0
3.2
3.4
3.6
3.8
4.0
4.2
Vin(V)
Vin(V)
Mar16-06 Rev B
SP7648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
© 2006 Sipex Corporation
9
TYPꢂꢃaL PeRFORMaꢄꢃe ꢃHaRaꢃTeRꢂSTꢂꢃS
Ch1 = SHDN (5V/div)
Ch2 = Vout (1V/div)
Ch4 = Iin (1A/div)
Startup700mAFlash,Vin=3.6V,Vout=3.65V
Ripple700mAFlash,Vin=3.6V,Vout=3.65V
Startup200mATorch,Vin=3.6V,Vout=3.9V
Ch1 = Vin (AC)
100mV/div
Ch2 = Vout (AC)
100mV/div
Ripple200mATorch,Vin=3.6V,Vout=3.9V
Mar16-06 Rev B
SP7648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
© 2006 Sipex Corporation
ꢀ0
Paꢃkaꢅe: 10 Pꢂꢄ MSOP
ø1
ø1
FRONT VIEW
TOP VIEW
D
R1
Gauge Plane
e1
R
D/2
L2
10
9
8
7
6
c
ø
L
E/2
Seating Plane
E
E1
(L1)
Seating
Plane
1
2
3
4
5
A2
A
e
Pin #1 designator
to be within this
INDEX AREA
(D/2 * E1/2)
A1
SIDE VIEW
b
10 Pin MSOP
JEDEC MO-187
Variation BA
Dimensions in Inches
Conversion Factor:
1 Inch = 25.40 mm
Dimensions in Millimeters:
Controlling Dimension
SYMBOL
MIN
0.00
0.08
0.07
0.07
0º
5º
-
0.75
0.17
NOM
-
-
-
-
-
-
-
MAX
0.15
0.23
-
-
8º
15º
1.10
0.95
0.33
MIN
0.000
0.004
0.003
0.003
0º
5º
-
0.030
0.007
NOM
MAX
A1
c
R
R1
ø
-
-
-
-
-
-
0.006
0.009
-
-
8º
ø1
15º
A
A2
b
0.043
0.038
0.013
0.85
-
0.034
-
D
E
E1
e
e1
L
3.00 BSC
4.90 BSC
3.00 BSC
0.50 BSC
2.00 BSC
0.60
0.118 BSC
0.193 BSC
0.118 BSC
0.020 BSC
0.079 BSC
0.024
0.40
0.80
0.016
0.032
L1
L2
0.95 REF
0.25 BSC
0.037 REF
0.010 BSC
SIPEX Pkg Signoff Date/Rev:
JL Aug09-05 RevA
Mar16-06 Rev B
SP7648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
© 2006 Sipex Corporation
ꢀꢀ
Paꢃkaꢅe: 10 Pꢂꢄ DFꢄ
D
D/2
ø
E/2
A
(A3)
E
A1
Seating Plane
SIDE VIEW
Pin1 Designator
to be within this
INDEX AREA
(D/2 x E/2)
TOP VIEW
D2
D2/2
4
1
2
3
5
Note that Thermal
Pad (Pin 11) should
be connected to
Ground.
INDEX AREA
(D/2 x E/2)
E2/2
E2
K
L
10
9
8
7
6
e
b
BOTTOM VIEW
JEDEC MO-229
3x3 10 Pin DFN
VARIATION VEED-5
Dimensions in Inches
Conversion Factor:
1 Inch = 25.40 mm
Dimensions in Millimeters:
Controlling Dimension
SYMBOL
MIN
0.80
0.00
NOM
0.90
0.02
0.20 REF
MAX
1.00
0.05
MIN
0.032
0.000
NOM
0.036
0.001
0.008 REF
MAX
0.039
0.002
A
A1
A3
K
0.20
0º
0.18
-
-
0.008
0º
0.008
-
-
-
ø
-
0.25
14º
0.30
14º
0.012
b
0.010
D
D2
E
E2
e
L
3.00 BSC
-
3.00 BSC
-
0.50 BSC
0.40
0.119 BSC
-
0.119 BSC
-
0.020 BSC
0.016
2.20
1.40
0.30
2.70
1.75
0.50
0.087
0.056
0.012
0.106
0.069
0.020
SIPEX Pkg Signoff Date/Rev:
JL Aug09-05 / RevA
Mar16-06 Rev B
SP7648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
© 2006 Sipex Corporation
12
ORDeRꢂꢄꢅ ꢂꢄFORMaTꢂOꢄ
Opꢀrꢁting Tꢀmpꢀrꢁturꢀ Rꢁngꢀ Pꢁcꢆꢁgꢀ Typꢀ
Pꢁrt ꢄumbꢀr
SP7648ER .................................................. -40°C to +85°C ........................................................... 10 Pin DFN
SP7648ER/TR ............................................ -40°C to +85°C .......................................................... 10 Pin DFN
SP7648EU .................................................. -40°C to +85°C ........................................................ 10 Pin MSOP
SP7648EU/TR ............................................ -40°C to +85°C ....................................................... 10 Pin MSOP
Available in lead free packaging. To order add “-L” suffix to part number.
Example: SP7648ER/TR = standard; SP7648ER-L/TR = lead free
/TR = Tape and Reel
Pack quantity is 3,000 for DFN, and 2,500 for MSOP.
Solved by
Sipꢀx ꢃorporꢁtion
Hꢀꢁdquꢁrtꢀrs ꢁnd
TM
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume
any liability arising out of the application or use of any product or circuit described herein; neither does it convey
any license under its patent rights nor the rights of others.
Mar16-06 Rev B
SP7648 Ultra-low Quiescent Current, High Efficiency Boost Regulator
© 2006 Sipex Corporation
13
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