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ST778 |
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| Part Number | ST778 |
| Manufacturer | STMicroelectronics (https://www.st.com/) |
| Description | The ST777/778/779 are dc-dc converters that step-up from low voltage inputs requiring only three external components, an inductor (typically 22µH) and two capacitors. The device include a Sinchronous ... |
| Features |
he shutdown mode, fully disconnecting the output from the source. This eliminates the current drain associated with conventional step-up converters when off or in shutdown. Supply current is 270µA under no load and only 20µA in stand by mode.
22µH
RLIM
2
IN
DELAY TIMER
1
5
ILIM
LX
ACTIVE RECTIFIER
tOFF
SWITCH DRIVER
DELAY TIMER
OUT 6
VO
100µF
tON
1 : N
RECTIFIER CONTROL
PGND 4
SEL 8
VREF
1.25V
7 SHDN
SHUTDOWN CONTROL
AGND 3
October 2002
1/11
ST777/778/779
ABSOLUTE MAXIMUM RATINGS
Symbol VCC LX OUT, SHDN AGND to PGND FB PTOT TSTG TOP Parameter DC Input Voltage to GND Switch ... |
| Document |
 ST778 Data Sheet
PDF 273.68KB |
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