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LM2663M bảng dữ liệu(PDF) 5 Page - Texas Instruments

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Giải thích chi tiết về linh kiện  LM266x Switched Capacitor Voltage Converter
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LM2662, LM2663
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SNVS002E – JANUARY 1999 – REVISED OCTOBER 2014
6.5 Electrical Characteristics
Unless otherwise specified: V+ = 5 V, FC = Open, C1 = C2 = 47 μF.
(1)
PARAMETER
TEST CONDITION
MIN(2)
TYP(3)
MAX(2)
UNIT
V+
Supply Voltage
RL = 1k
Inverter, LV =
3.5
5.5
Open
V
Inverter, LV = GND
1.5
5.5
Doubler, LV = OUT
2.5
5.5
IQ
Supply Current
No Load
FC = V+ (LM2662)
1.3
4
LV = Open
SD = Ground
mA
(LM2663)
FC = Open
0.3
0.8
ISD
Shutdown Supply Current
10
μA
(LM2663)
VSD
Shutdown Pin Input Voltage
Shutdown Mode
2
(4)
V
(LM2663)
Normal Operation
0.3
IL
Output Current
200
mA
ROUT
Output Resistance(5)
IL = 200 mA
3.5
7
Ω
fOSC
Oscillator Frequency(6)
OSC = Open
FC = Open
7
20
kHz
FC = V+
55
150
fSW
Switching Frequency(7)
OSC = Open
FC = Open
3.5
10
kHz
FC = V+
27.5
75
IOSC
OSC Input Current
FC = Open
±2
μA
FC = V+
±10
PEFF
Power Efficiency
RL (500) between V
+ and OUT
90%
96%
IL = 200 mA to GND
86%
VOEFF
Voltage Conversion Efficiency
No Load
99%
99.96%
(1)
In the test circuit, capacitors C1 and C2 are 47-μF, 0.2-Ω maximum ESR capacitors. Capacitors with higher ESR will increase output
resistance, reduce output voltage and efficiency.
(2)
–40°C to 105°C
(3)
TJ = 25°C
(4)
In doubling mode, when Vout > 5 V, minimum input high for shutdown equals Vout − 3 V.
(5)
Specified output resistance includes internal switch resistance and capacitor ESR.
(6)
For LM2663, the oscillator frequency is 150 kHz.
(7)
The output switches operate at one half of the oscillator frequency, ƒOSC = 2ƒSW.
Copyright © 1999–2014, Texas Instruments Incorporated
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Product Folder Links: LM2662 LM2663


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