TS3001
PIN FUNCTIONS
PIN
1
2
NAME
FOUT
NC
FUNCTION
Fixed Duty Cycle Output. A push-pull output stage with an output
resistance of 160Ω, the FOUT pin swings from GND to V
DD
. For
lowest power operation, capacitive loads should be minimized
and resistive loads should be maximized.
No Connection.
Pulse-width Modulated Output. A push-pull output stage with an
output resistance of 160Ω, the PWMOUT pin is wired anti-phase
with respect to FOUT and swings from GND to V
DD
. For lowest
power operation, capacitive loads should be minimized and
resistive loads should be maximized.
PWMOUT Enable and Duty Cycle Control Input. An analog input
pin, the V
CNTRL
pin voltage enables the TS3001’s PWM engine
and controls the duty cycle at PWMOUT from 12%
(V
CNTRL
= 0.03 x V
DD
) to 90% (V
CNTRL
= 0.27 x V
DD
). Enabling the
PWM engine increases the TS3001’s nominal operating supply
current. To disable the TS3001’s PWM engine, CNTRL shall be
connected to V
DD
.
Ground – Connect this pin to the system’s analog ground plane.
FOUT Programming Resistor Input. A 4.32MΩ resistor connected
from this pin to GND sets the TS3001’s internal oscillator’s output
period to 40μs (25kHz). For optimal performance, the
composition of the RSET resistor shall be consistent with
tolerances of 1% or lower. The RSET pin voltage is 0.3V at a 1V
supply.
Power Supply Voltage Input. While the TS3001 is fully specified
at 1V, the supply voltage range is 0.9V ≤ V
DD
≤ 1.8V. It is always
considered good engineering practice to bypass the V
DD
pin with
a 0.1μF ceramic decoupling capacitor in close proximity to the
TS3001.
Exposed paddle is electrically connected to GND.
3
PWMOUT
4
CNTRL
5,6
GND
7
RSET
8
VDD
EP
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TS3001DS r1p0
RTFDS
TOUCHSTONE [ TOUCHSTONE SEMICONDUCTOR INC ]
