Datasheet
LT6656
8
6656fa
pin FuncTions
GND* (Pin 1): Internal Function. This pin must be tied
to ground.
GND (Pin 2): Device Ground.
NC (Pin 3): Not internally connected. May be tied to V
IN
,
V
OUT
, GND or floated.
V
IN
(Pin 4): Power Supply. Bypass V
IN
with a 0.1µF
capacitor to ground.
NC (Pin 5): Not internally connected. May be tied to V
IN
,
V
OUT
, GND or floated.
V
OUT
(Pin 6): Output Voltage. An output capacitor of 1µF
minimum is required for stable operation.
block DiagraM
NC
NC
6656 BD
BANDGAP
ERROR
AMP
GND
V
IN
GND
V
OUT
Typical perForMance characTerisTics
Long-Term Drift
HOURS
0
LONG TERM DRIFT (ppm)
200
150
50
–50
–150
100
0
–100
–200
500 900300 700
6656 G16
1000400 800200 600100
ALL OPTIONS
C
L
= 1µF
I
L
= 0
5 TYPICAL PARTS
SOLDERED ONTO PCB
Integrated 10Hz to 1kHz Noise
vs Load Current
0.1µ 1µ 1m 10m100µ10µ
250
150
200
100
50
0
LOAD CURRENT (A)
INTEGRATED NOISE (µV
RMS
)
6656 G23
C
L
= 0.47µF
C
L
= 1µF
C
L
= 10µF
C
L
= 47µF
2.5V OPTION
Integrated 10Hz to 1kHz Noise
vs Load Current
0.1µ 1µ 1m 10m100µ10µ
500
400
200
100
300
0
LOAD CURRENT (A)
INTEGRATED NOISE (µV
RMS
)
6656 G25
V
IN
= V
OUT
+ 0.5V
C
L
= 1µF
1.25V OPTION
2.5V OPTION
5V OPTION