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LM2753 PDF даташит

Спецификация LM2753 изготовлена ​​​​«National Semiconductor» и имеет функцию, называемую «High Power Switched Capacitor Voltage Convertor/Flash LED Driver».

Детали детали

Номер произв LM2753
Описание High Power Switched Capacitor Voltage Convertor/Flash LED Driver
Производители National Semiconductor
логотип National Semiconductor логотип 

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LM2753 Даташит, Описание, Даташиты
February 2005
LM2753
High Power Switched Capacitor Voltage Convertor/Flash
LED Driverwww.datasheet4u.com
General Description
The LM2753 is capable of driving a Flash LED with a pulsed
current of 400mA at an input voltage of 3.6V. A switched
capacitor doubler, the LM2753 provides a regulated 5V out-
put (VOUT) over an input supply range of 3.0V to 5.5V. The
switched output, IOUT, takes less than 10ns to turn on and
provide maximum current to a Flash LED. Flash LED current
is set via a ballast resistor. Continuous illumination current
(Torch Mode) is programmed by connecting a resistor be-
tween IOUT and VOUT. This device uses only three small,
low-cost ceramic capacitors.
LM2753 uses Pulse Frequency Modulation (PFM) regula-
tion. Typical operating frequency is 725kHz. Under no-load
conditions, LM2753 operates on only 60µA. If the output is
connected to ground, the charge pump stays in the gain of 1
which helps limit the input current to 300mA (typ.)
LM2753 is available in a 10-pin No Pullback Leadless Lead-
frame Package: LLP-10.
Features
n Input Voltage Range: 3.0V to 5.5V
n Regulated 5V Output
n 250mA Output Current with a 3.6V input
n 400mA Pulsed Output Current (up to 500ms duration)
n 60µA (typ.) Quiescent Current
n PFM Regulation
n Inductor-less solution: requires only 3 small capacitors
n <1µA Typical Shutdown Current
n 10-pin LLP Package (No Pullback):
3mm x 3mm x 0.75mm
Applications
n Cell Phone Camera Flash
n General Purpose Regulated Voltage Output, High
Current Supply
Typical Application Circuit
20140601
© 2005 National Semiconductor Corporation DS201406
www.national.com









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LM2753 Даташит, Описание, Даташиты
Connection Diagram
LM2753
10-Pin LLPPackage (LLP10) No Pullback
3mm X 3mm x 0.75mm
NS Package Number SDA10A
www.datasheet4u.com
20140605
Pin Descriptions
Pin #
1
2
3
4
5
6
7
8
9
10
Name
C1+
VIN
C1-
FLASH
GND
EN
GND
IOUT
VOUT
GND
Description
Flying capacitor connection.
Input Voltage Connection. Input Voltage Range: 3.0V to 5.5V.
Flying Capacitor connection.
Flash Logic Input Pin. Logic HIGH = Flash Output On, Logic LOW = Flash
Output Off. There is an internal pulldown of 300kbetween FLASH and GND.
Connect to Ground.
Enable Pin. Logic HIGH = Enable, Logic LOW = Shut Down. There is an
internal pulldown of 300kbetween EN and GND
Connect to Ground.
Flash Output. On/Off Control via FLASH Pin.
5V Regulated Output.
Connect to Ground
Ordering Information
Output Voltage
5.0V
5.0V
Ordering Number
LM2753SD
LM2753SDX
Package Mark ID
D004B
D004B
Package
SDA10A
Non-Pullback
LLP
Supplied As
250 Units, Tape and
Reel
3000 Units, Tape and
Reel
www.national.com
2









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LM2753 Даташит, Описание, Даташиты
Absolute Maximum Ratings (Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications. If Military/
Aerospace specified devices are required, please contact
the National semiconductor Sales/Office/Distributors for
availability and specifications.
VIN Pin: Voltage to Ground
www.dEatNas, hFelaest4hup.cionms: Voltage to GND
Continuous Power Dissipation (Note
3)
Junction Temperature (TJ-MAX-ABS)
Storage Temperature Range
Maximum Lead Temperature
(Soldering, 10sec.)
ESD Rating (Note 4)
Human-body model:
Machine model:
−0.3V to 6.0V
−0.3V to (VIN+0.3)
w/ 6.0V max
Internally Limited
150˚C
−65˚C to 150˚C
265˚C
2kV
200V
Operating Ratings (Notes 1, 2)
Input Voltage Range
EN, Flash Input Voltage Range
Junction Temperature (TJ) Range
Ambient Temperature (TA) Range
(Note 5)
3.0V to 5.5V
0V to VIN
-40˚C to 120˚C
-40˚C to 85˚C
Thermal Properties
Junction-to-Ambient Thermal
Resistance, LLP-10
Package (θJA) (Note 6)
55˚C/W
Electrical Characteristics (Notes 2, 7)
Limits in standard typeface are for TA = 25oC. Limits in boldface type apply over the full operating ambient temperature range
(-40˚C TA +85˚C) . Unless otherwise noted, specifications apply to the LM2753 Typical Application Circuit (pg. 1) with: VIN
= 3.6V, V(EN) = VIN, V(FLASH) = GND, C1 = 1.0µF, CIN = COUT = 10.0µF (Note 8).
Symbol
Parameter
Conditions
Min Typ Max Units
VOUT
IVOUT
IOUT
IQ
ISD
Output Voltage
Continuous Load Current
Pulsed Flash Current
Quiescent Current
Shutdown Supply Current
3.0V VIN 5.5V,
IOUT 100mA
3.0V VIN 5.5V
VOUT = 5V (typ.)
V(FLASH) = 1.8V
TPULSE = 500mS
VIOUT-MAX = 4.1V (typ.)
IOUT = 0mA
3.0V VIN 5.5V
V(EN) = 0V
3.0V VIN 5.5V
V(EN) = 0V
4.75 5.0 5.25
(-5%)
(+5%)
V
200 mA
400 mA
60 80 µA
0.1 1 µA
0.2
3.0V VIN 5.5V
TA = 85˚C
ROUT
fsw
VIH
VIL
IIH
IIL
tON
tFLASH
Output Impedance
Switching Frequency
Logic Input High
Logic Input Low
Logic Input High Current
Logic Input Low Current
Turn-On Time (Note 9)
Flash Turn-On Time (Note 10)
VIN = 3.2V
3.0V VIN 5.5V
Input Pins: EN, FLASH
Input Pins: EN, FLASH
V(EN) = V(FLASH) = 3.0V
V(EN) = V(FLASH) = 0V
V(FLASH) = 3.6V
5.3
475 725 950 kHz
1.20
0
VIN V
.30 V
10 µA
10 nA
640 µs
10 ns
Note 1: 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 2: All voltages are with respect to the potential at the GND pin.
Note 3: Internal thermal shutdown circuitry protects the device from permanent damage. Thermal shutdown engages at TJ=125˚C (typ.).
Note 4: The Human body model is a 100 pF capacitor discharged through a 1.5 kresistor into each pin. The machine model is a 200pF capacitor discharged
directly into each pin. MIL-STD-883 3015.7
3 www.national.com










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