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LM2663MX bảng dữ liệu(PDF) 3 Page - Texas Instruments

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tên linh kiện LM2663MX
Giải thích chi tiết về linh kiện  LM2662/LM2663 Switched Capacitor Voltage Converter
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LM2662, LM2663
www.ti.com
SNVS002D – JANUARY 1999 – REVISED MAY 2013
Electrical Characteristics
Limits in standard typeface are for TJ = 25°C, and limits in boldface type apply over the full Operating Junction Temperature
Range. Unless otherwise specified: V+ = 5V, FC = Open, C1 = C2 = 47 μF.
(1)
Symbol
Parameter
Condition
Min
Typ
Max
Units
V+
Supply Voltage
RL = 1k
Inverter, LV = Open
3.5
5.5
Inverter, LV = GND
1.5
5.5
V
Doubler, LV = OUT
2.5
5.5
IQ
Supply Current
No Load
FC = V+ (LM2662)
1.3
4
LV = Open
SD = Ground (LM2663)
mA
FC = Open
0.3
0.8
ISD
Shutdown Supply Current (LM2663)
10
μA
VSD
Shutdown Pin Input Voltage (LM2663)
Shutdown Mode
2.0
(2)
V
Normal Operation
0.3
IL
Output Current
200
mA
ROUT
Output Resistance(3)
IL = 200 mA
3.5
7
Ω
fOSC
Oscillator Frequency(4)
OSC = Open
FC = Open
7
20
kHz
FC = V+
55
150
fSW
Switching Frequency(5)
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, 0.2Ω maximum ESR capacitors. Capacitors with higher ESR will increase output
resistance, reduce output voltage and efficiency.
(2)
In doubling mode, when Vout > 5V, minimum input high for shutdown equals Vout − 3V.
(3)
Specified output resistance includes internal switch resistance and capacitor ESR.
(4)
For LM2663, the oscillator frequency is 150 kHz.
(5)
The output switches operate at one half of the oscillator frequency, fOSC = 2fSW.
Test Circuits
Figure 1. LM2662 and LM2663 Test Circuits
Copyright © 1999–2013, Texas Instruments Incorporated
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Product Folder Links: LM2662 LM2663


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