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LD7280 Datasheet Preview

LD7280 Datasheet

VFM Step-Up DC/DC Converter

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LD7280 pdf
LD7280
05/08/2006
VFM Step-Up DC/DC Converter
Rev: 00a
General Description
The LD7280 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.
The LD7280 is a high efficiency step–up DC/DC converter
and takes only three external components to achieve the low
ripple.
As well, using chip enable function will make it possible to
supply current on standby minimized.
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, 0.85V at no load.
80% 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
LD7280
Fig. 1
VOUT
COUT
22µF
Leadtrend Technology Corporation
LD7280-DS-00a May 2007
1



Leadtrend
Leadtrend

LD7280 Datasheet Preview

LD7280 Datasheet

VFM Step-Up DC/DC Converter

No Preview Available !

LD7280 pdf
LD7280
Pin Configuration
SOT-89 (TOP VIEW)
7280PJ
YWXX
12
3
GND VOUT LX
Y : Year code (D: 2004, E: 2005…..)
W : Week code
XX : Output Voltage
SOT-25 (TOP VIEW)
LX GND
54
Y WP 80
XX
123
Y CE VOUT NC
The PB-free package is
identified in embossed font
Ordering Information
Part number
Package
LD7280 PL-XX
SOT-25
LD7280 PJ-XX
SOT-89
The LD7280 is ROHS compliant.
XX: Output voltage: 33: 3.3V, 50: 5.0V
Top Mark
YWP80/XX
7280PJ
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
LD7280-DS-00a May 2007
2


Part Number LD7280
Description VFM Step-Up DC/DC Converter
Maker Leadtrend
Total Page 8 Pages
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