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LD7282

Leadtrend
Part Number LD7282
Manufacturer Leadtrend
Description VFM Step-Up DC/DC Converter
Published Jul 5, 2015
Detailed Description LD7282 6/16/2006 VFM STEP-UP DC/DC CONVERTER REV: 01a General Description The LD7282 is a VFM step-up DC/DC converter...
Datasheet PDF File LD7282 PDF File

LD7282
LD7282

Overview
LD7282 6/16/2006 VFM STEP-UP DC/DC CONVERTER REV: 01a General Description The LD7282 is a VFM step-up DC/DC converter with ultra low supply current.
The CMOS design results in less power consumption and high capability for battery-powered instruments.
With a built-in switching MOSFET, the LD7282 takes only three external components (using a coil, diode & capacitor connected externally) to achieve the low ripple & high efficiency.
As well, using chip enable function will make it possible to supply current on standby minimized.
This converter also features a very low switch off, bias current of 5.
0µA typical.
Features • Minimum external component counts • Ultra low input current in switch off (Typ.
5µA) • ±2% High accuracy of output voltage • Low ripple and low noise • Low start-up voltage, 0.
75V at no load.
• 85% efficiency with low cost inductor Applications • Power source for battery -powered equipment • Power source for DSC, PDA, Camcorders, VCRs, Pagers, and Hand-held communication equipment Typical Application 47µH VIN L L range: 10µH~120µH D1 5817SL LX VOUT NC CE GND LD7282 Fig.
1 VOUT COUT 22µF Leadtrend Technology Corporation LD7282-DS-01a May 2007 1 LD7282 Pin Configuration SOT-89 (TOP VIEW) 7282PJ YWXX 12 3 SOT-25 (TOP VIEW) LX GND 54 Y WP 82 XX 123 GND VOUT LX Y : Year code (D: 2004, E: 2005….
.
) W : Week code XX : Output Voltage Y CE VOUT NC The PB-free package is identified in embossed font Ordering Information Part number Package LD7282 PL-XX SOT-25 LD7282 PJ-XX SOT-89 The LD7282 is ROHS compliant.
XX: Output voltage: 33: 3.
3V, 50: 5.
0V Top Mark YWP82/XX 7282PJ Shipping 3000 /tape & reel 1000 /tape & reel Pin Descriptions PIN PJ - XX PL - XX 14 22 35 -1 -3 NAME GND VOUT LX CE NC FUNCTION IC GND Output voltage Switching pin Chip enable High=enable Low=disable No connected Leadtrend Technology Corporation LD7282-DS-01a May 2007 2 Block Diagram LX LXSW GND NC VLx Limiter VREF Buffer VFM Control Error Amp.
Oscillator ...


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