lm2586sx-5.0 National Semiconductor Corporation, lm2586sx-5.0 Datasheet - Page 19
lm2586sx-5.0
Manufacturer Part Number
lm2586sx-5.0
Description
Simple Switcher 3a Flyback Regulator With Shutdown
Manufacturer
National Semiconductor Corporation
Datasheet
1.LM2586SX-5.0.pdf
(30 pages)
- Current page: 19 of 30
- Download datasheet (2Mb)
Typical Flyback Regulator Applications
FIGURE 28. Schott 67140900
FIGURE 29. Schott 67140890
Top View
Top View
T6
T5
01251649
01251650
FIGURE 27. Schott 26606
Top View
T7
19
Step-Up (Boost) Regulator
Operation
Figure 30 shows the LM2586 used as a step-up (boost)
regulator. This is a switching regulator that produces an
output voltage greater than the input supply voltage.
A brief explanation of how the LM2586 Boost Regulator
works is as follows (refer to Figure 30). When the NPN
switch turns on, the inductor current ramps up at the rate of
V
off, the lower end of the inductor flies above V
its current through diode (D) into the output capacitor (C
at a rate of (V
inductor during the switch on time is transferred to the output
during the switch off time. The output voltage is controlled by
adjusting the peak switch current, as described in the flyback
regulator section.
(Continued)
IN
/L, storing energy in the inductor. When the switch turns
OUT
01251647
− V
IN
)/L. Thus, energy stored in the
IN
, discharging
www.national.com
OUT
)
Related parts for lm2586sx-5.0
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Low-power dual op-amps with low input bias current
Manufacturer:
STMicroelectronics
Datasheet:
Part Number:
Description:
LOW POWER DUAL OPERATIONAL AMPLIFIERS
Manufacturer:
STMICROELECTRONICS [STMicroelectronics]
Datasheet:
Part Number:
Description:
Freescale Semiconductor Technical Data
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Self-calibrating 12-bit Plus Sign Serial I/o A/d Converters With Mux And Sample/hold
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Pllatinum Tm Fractional N Rf / Integer N If Dual Low Power Frequency Synthesizer
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Pllatinum? 2.0 Ghz Frequency Synthesizer For Rf Personal Communications
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Pllatinumtm 160 Mhz Frequency Synthesizer For Rf Personal Communications
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Dual N-channel Enhancement Mode Field Effect Transistor
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Video Amplifier System (obsolete)
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Synchronous Step-up DC/DC Converter For White Led Applications
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
CLC420 - High Speed, Voltage Feedback op Amp, Package: Lcc, Pin Nb=20
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Monolithic Triple 4.5 CRT Driver
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Differential Video Amplifier
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
ADC10061 - 10-Bit 600 NS A/D Converter With Input Multiplexer And Sample/Hold, Package: Soic Wide, Pin Nb=20
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
DS36277 - Dominant Mode Multipoint Transceiver, Package: Soic Narrow, Pin Nb=8
Manufacturer:
National Semiconductor Corporation
Datasheet: