10-Pin Leadless Leadframe Package (LLP) - 3mm X 3mm
NS Package Number LDA10A (Shown below), and SDA10A
20035102
Pin Names and Numbers apply to both SDA10A and LDA10A packages.
Pin Descriptions
Pin #(s)
8, 9
1, 2
10
7
4
Pin Name
V
IN
V
OUT
CAP+
CAP-
SD
Description
Input Voltage - The pins must be connected externally.
Output Voltage - These pins must be connected externally.
Flying Capacitor Positive Terminal
Flying Capacitor Negative Terminal
Active-Low Shutdown Input. A 200kΩ resistor is connected internally between
this pin and GND to pull the voltage on this pin to 0V, and shut down the part,
when the pin is left floating.
This pin must be connected exernally to the ground pins (pins 5, 6, and the
DAP).
Feedback Pin
Ground - These pins must be connected externally.
3
5, 6, DAP
LM2750-5.0: GND
LM2750-ADJ: FB
GND
Ordering Information
Output Voltage
Option
5.0
5.0
Adjustable
Adjustable
5.0
5.0
Adjustable
Adjustable
Ordering
Information
LM2750LD-5.0
LM2750LDX-5.0
LM2750LD-ADJ
LM2750LDX-ADJ
LM2750SD-5.0
LM2750SDX-5.0
LM2750SD-ADJ
LM2750SDX-ADJ
Package
(Note 1)
LDA10A
LDA10A
LDA10A
LDA10A
SDA10A
SDA10A
SDA10A
SDA10A
Package
Marking
S002B
S002B
S003B
S003B
S005B
S005B
S004B
S004B
Supplied as
1000 Units, Tape and Reel
4500 Units, Tape and Reel
1000 Units, Tape and Reel
4500 Units, Tape and Reel
1000 Units, Tape and Reel
4500 Units, Tape and Reel
1000 Units, Tape and Reel
4500 Units, Tape and Reel
Note 1:
LDA10A Package: 10 pad pullback LLP. SDA10A Package: 10 pad non-pullback LLP. For more details, refer to the package drawings in the Physical
Dimensions section at the end of this datasheet.
www.national.com
2
LM2750
Absolute Maximum Ratings
(Notes 2, 3)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN
Pin: Voltage to Ground
SD Pin: Voltage to GND
Junction Temperature (T
J-MAX-ABS
)
Continuous Power Dissipation
(Note 4)
Maximum Output Current (Note 5)
Storage Temperature Range
Maximum Lead Temperature
(Soldering, 5 sec.)
ESD Rating (Note 6)
Human-body model:
Machine model
2 kV
100V
175mA
−65˚C to 150˚C
260˚C
−0.3V to 6V
−0.3V to
(V
IN
+0.3V)
150˚C
Internally Limited
Operating Ratings
(Notes 2, 3)
2.7V to 5.6V
2.7V to (V
OUT
+0.7V)
2.7V to 5.6V
3.8V to 5.2V
0 to 120mA
0 to 40mA
-40˚C to 125˚C
-40˚C to 85˚C
LM2750-5.0 Input Voltage Range
LM2750-ADJ Input Voltage Range
3.8V
≤
V
OUT
≤
4.9V:
4.9V
≤
V
OUT
≤
5.2V:
LM2750-ADJ Output Voltage Range
Recommended Output Current
2.9V
≤
V
IN
≤
5.6V
2.7V
≤
V
IN
≤
2.9V
Junction Temperature (T
J
) Range
Ambient Temperature (T
A
) Range
(Note 7)
Thermal Information
Junction-to-Ambient Thermal
Resistance, LLP-10
Package (θ
JA
) (Note 8)
55˚C/W
(Notes 3, 9)
Typical values and limits in standard typeface apply for T
J
= 25
o
C. Limits in boldface type apply over the operating junction
temperature range. Unless otherwise specified: 2.9V
≤
V
IN
≤
5.6V, V
OUT
= 5.0V (LM2750-ADJ), V(SD) = V
IN
, C
FLY
= 1µF, C
IN
= 2 x 1µF, C
OUT
= 2 x 1µF (Note 10).
Symbol
Parameter
Output Voltage
(LM2750-5.0)
Operating Supply Current
Shutdown Supply Current
Feedback Pin Voltage
(LM2750-ADJ)
Feedback Pin Input Current
(LM2750-ADJ)
Output Ripple
Peak Efficiency
(LM2750-5.0)
Average Efficiency over Li-Ion
Input Range
(LM2750-5.0)
(Note 12)
Switching Frequency
V
OUT
Turn-On Time
Current Limit
Logic-High SD Input
Logic-Low SD Input
SD Input Current (Note 13)
SD Input Current
1.3V
≤
V(SD)
≤
V
IN
V(SD) = 0V
−1
V
IN
= 3.0V, I
OUT
= 100mA,
(Note 11)
V
OUT
shorted to GND
1.3
0
15
Conditions
2.9V
≤
V
IN
≤
5.6V,
I
OUT
≤
120mA
2.7V
≤
V
IN
≤
2.9V,
I
OUT
≤
40mA
I
OUT
= 0mA,
V
IH(MIN)
≤
V(SD)
≤V
IN
V(SD) = 0V
V
IN
= 3.1V
V
FB
= 1.4V
C
OUT
= 10µF, I
OUT
= 100mA
C
OUT
= 2.2µF, I
OUT
= 100mA
E
PEAK
E
AVG
V
IN
= 2.7V, I
OUT
= 40mA
V
IN
= 2.9V, I
OUT
= 120mA
V
IN
Range: 2.9V - 4.2V,
I
OUT
= 120mA
V
IN
Range: 2.9V - 4.2V,
I
OUT
= 40mA
1.0
1.170
1.232
1
4
15
87
85
70
67
1.7
0.5
300
V
IN
0.4
50
1
MHz
ms
mA
V
V
µA
µA
%
Min
4.80
(-4%)
4.80
(-4%)
Typ
5.0
5.0
5
Max
5.20
(+4%)
5.20
(+4%)
10
12
2
1.294
Units
V
(%)
mA
µA
V
nA
Electrical Characteristics
V
OUT
I
Q
I
SD
V
FB
I
FB
V
R
mVp-p
%
f
SW
t
ON
I
LIM
V
IH
V
IL
I
IH
I
IL
Shutdown Pin (SD) Characteristics
3
www.national.com
LM2750
Electrical Characteristics
(Notes 3, 9) (Continued)
Typical values and limits in standard typeface apply for T
J
= 25
o
C. Limits in boldface type apply over the operating junction
temperature range. Unless otherwise specified: 2.9V
≤
V
IN
≤
5.6V, V
OUT
= 5.0V (LM2750-ADJ), V(SD) = V
IN
, C
FLY
= 1µF, C
IN
= 2 x 1µF, C
OUT
= 2 x 1µF (Note 10).
Symbol
Parameter
Required Input
Capacitance(Note 14)
Required Output
Capacitance(Note 14)
Conditions
I
OUT
≤
60mA
60mA
≤
I
OUT
≤
120mA
I
OUT
≤
60mA
60mA
≤
I
OUT
≤
120mA
Min
1.0
2.0
1.0
2.0
µF
Typ
Max
Units
µF
Capacitor Requirements
C
IN
C
OUT
Note 2:
Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under which operation of
the device is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the
Electrical Characteristics tables.
Note 3:
All voltages are with respect to the potential at the GND pin.
Note 4:
Thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at T
J
=150˚C (typ.) and disengages at T
J
=135˚C (typ.).
Note 5:
Absiolute Maximum Output Current guaranteed by design. Recommended input voltage range for output currents in excess of 120mA: 3.1V to 4.4V.
Note 6:
The Human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin. MIL-STD-883 3015.7. The machine model is a 200pF
capacitor discharged directly into each pin.
Note 7:
Maximum ambient temperature (T
A-MAX
) is dependent on the maximum operating junction temperature (T
J-MAX-OP
= 125
o
C), the maximum power
dissipation of the device in the application (P
D-MAX
), and the junction-to ambient thermal resistance of the part/package in the application (θ
JA
), as given by the
following equation: T
A-MAX
= T
J-MAX-OP
- (θ
JA
x P
D-MAX
). Maximum power dissipation of the LM2750 in a given application can be approximated using the following
equation: P
D-MAX
= (V
IN-MAX
x I
IN-MAX
) - (V
OUT
x I
OUT-MAX
) = [V
IN-MAX
x ((2 x I
OUT-MAX
) + 5mA)] - (V
OUT
x I
OUT-MAX
). In this equation, V
IN-MAX
, I
IN-MAX
, and
I
OUT-MAX
are the maximum voltage/current of the specific application, and not necessarily the maximum rating of the LM2750.
The maximum ambient temperature rating of 85
o
C is determined under the following application conditions:
θ
JA
= 55
o
C/W, P
D-MAX
= 727mW (achieved when
V
IN-MAX
= 5.5V and I
OUT-MAX
= 115mA, for example). Maximum ambient temperature must be derated by 1.1
o
C for every increase in internal power dissipation of
20mW above 727mW (again assuming that
θ
JA
= 55
o
C/W in the application). For more information on these topics, please refer to
Application Note 1187: Leadless
Leadframe Package (LLP)
and the
Power Efficiency and Power Dissipation
section of this datasheet.
Note 8:
Junction-to-ambient thermal resistance (θ
JA
) is taken from a thermal modeling result, performed under the conditions and guidelines set forth in the JEDEC
standard JESD51-7. The test board is a 4 layer FR-4 board measuring 102mm x 76mm x 1.6mm with a 2 x 1 array of thermal vias. The ground plane on the board
is 50mm x 50mm. Thickness of copper layers are 36µm/18µm /18µm/36µm (1.5oz/1oz/1oz/1.5oz). Ambient temperature in simulation is 22˚C, still air. Power
dissipation is 1W.
The value of
θ
JA
of the LM2750 in LLP-10 could fall in a range as wide as 50
o
C/W to 150
o
C/W (if not wider), depending on PCB material, layout, and environmental
conditions. In applications where high maximum power dissipation exists (high V
IN
, high I
OUT
), special care must be paid to thermal dissipation issues. For more
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