TC115_13 Datasheet, PDF (4/14 Pages) Microchip Technology – PFM/PWM Step-Up DC/DC Converter

TC115
3.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1: PIN FUNCTION TABLE
Pin No. Symbol
Description
1
NC Not connected
2
PS Power and voltage sense input
3
SHDN Shutdown input
4
LX Inductor switch output
5
GND Ground terminal
3.1 Power and Voltage Sense Input
(PS)
PS is a dual function input that provides both feedback
voltage sensing and internal chip power. It should be
connected to the regulator output (See Section 5.0,
“Applications”).
3.2 Shutdown Input (SHDN)
A logic-low on SHDN suspends device operation and
supply current is reduced to less than 0.5 µA. The
device resumes normal operation when SHDN is again
brought high.
3.3 Inductor Switch Output (LX)
LX is the drain of an internal N-channel switching tran-
sistor. This terminal drives the external inductor, which
ultimately provides current to the load.
3.4 Ground Terminal (GND)
Connect to circuit ground.
3.5 No Connect (NC)
No internal connection.
DS21361D-page 4
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