NCV7680 ON Semiconductor, NCV7680 Datasheet - Page 18

• Manufacturer Part Number: NCV7680
• Description: Linear Current Regulator and Controller
• Manufacturer: ON Semiconductor

External PWM Operation
grounded. Grounding R
circuitry. With R
be modulated externally with a microprocessor using the
STOP logic input level thresholds.
Using the NCV7680 in a PWM setup requires R
Boost Voltage
VBAT or
PWM
6V
TAIL
MRA4003T3G
R1
10k
C4*
10nF
grounded, the STOP input pin can then
* Optional for EMI considerations
Figure 27. PWM Operation (suggested LCD backlighting applications)
TAIL
disables the internal PWM
C5
1mF
TAIL
http://onsemi.com
to be
18
C3
1mF
R4, 3.09k
the internal oscillator. This is typically 2 ms (from the 1 kHz
oscillator.
(I
capability increases up to the part maximum capability as V
is increased.
OUTX
Tail Frequency Stabilization Time requires 2 pulses from
Circuit limitations dictate the maximum output current
) to be 60 mA when operated at V
VP
Ballast Drive
FB
STOP/PWM
DIAG
RSTOP
RTAIL
OUT1
NCV7680
epad
OUT2
OUT3
OUT4
OUT5
OUT6
OUT7
OUT8
GND
www.DataSheet4U.com
P
= 5 V. Part
P