Datasheet

LTC3200/LTC3200-5
4
PIN FUNCTIONS
UUU
C
+
(Pins 1/6): Flying Capacitor Positive Terminal.
V
IN
(Pins 2/5): Input Supply Voltage. V
IN
should be
bypassed with a 1µF to 4.7µF low ESR ceramic capacitor.
C
–
(Pins 3/4): Flying Capacitor Negative Terminal.
GND (Pins 4,5/2): Ground. Should be tied to a ground
plane for best performance.
SHDN (Pins 6/3): Active Low Shutdown Input. A low on
SHDN disables the LTC3200/LTC3200-5. SHDN must not
be allowed to float.
FB (Pin 7): (LTC3200 Only) Feedback Input Pin. An output
divider should be connected from V
OUT
to FB to program
the output voltage.
V
OUT
(Pins 8/1): Regulated Output Voltage. V
OUT
should
be bypassed with a 1µF to 4.7µF low ESR ceramic capaci-
tor as close as possible to the pin for best performance.
LTC3200/LTC3200-5
TYPICAL PERFOR A CE CHARACTERISTICS
UW
V
OUT
Soft-Start Ramp Output Ripple
Load Transient Response
(LTC3200-5) T
A
= 25°C
V
OUT
(AC
COUPLED)
20mV/DIV
C
OUT
= 1µF
200ns/DIVV
IN
= 3.3V
I
L
= 100mA
C
OUT
= 3.3µF
C
OUT
= 10µF
32005 G09
I
L
10mA TO
90mA
50mA/DIV
V
OUT
(AC
COUPLED)
50mV/DIV
10µs/DIVV
IN
= 3.3V
C
OUT
= 1µF
32005 G10
V
SHDN
2V/DIV
V
OUT
1V/DIV
200µs/DIVV
IN
= 3V
32005 G08