YB1693
2A / 150KHz Buck DC-DC Converter
Pin Configuration
Figure 2: YB1693 Pin Configuration
Pin Description
Table 1
NAME
VIN
SW
FB
Description
This is the positive input supply for the IC switching regulator. A suitable input
bypass capacitor must be presented at this pin to minimize voltage transients
and to supply the switching currents needed by the regulator.
Internal switch. The voltage at this pin switches between (+Vcc – Vsat) and
approximately – 0.5V, with a duty cycle of approximately Vout / Vcc. To
minimize coupling to sensitive circuitry, the PC board copper area connected
to this pin should be minimized.
Sense the regulated output voltage to complete the feedback loop.
Allows the switching regulator circuit to be shutdown using logic level signals
thus dropping the total input supply current to approximately 100uA. Pulling
this pin below a threshold voltage of approximately 1.3V turns the regulator
on, and pulling this pin above 1.3V (up to a maximum of Vcc) shuts the
regulator down. If this shutdown feature is not needed, the EN pin can be
wired to the ground pin.
Circuit ground
EN
GND
Ordering Information
Table 2
Order Number
YB1693-33
YB1693-50
YB1693-ADJ
Package Type
SOP-8
SOP-8
SOP-8
Supplied as
2500 units Tape & Reel
2500 units Tape & Reel
2500 units Tape & Reel
Package Marking
YB1693-33
YB1693-50
YB1693-ADJ
YB1693 MRev.1.0
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2
YOBON [ YOBON TECHNOLOGIES,INC. ]
