LTYB datasheet(5/12 Pages) LINER

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LTC1983-3/LTC1983-5

sn1983 1983fs

PI FU CTIO S

VIN (Pin 1): Charge Pump Input Voltage. May be between

2.3V and 5.5V. VIN should be bypassed with a ≥4.7µF low

ESR capacitor as close as possible to the pin for best

performance.

VOUT (Pin 2): Regulated Output Voltage for the IC. VOUT

should be bypassed with a

≥4.7µF low ESR capacitor as

close as possible to the pin for best performance.

C+ (Pin 3): Charge Pump Flying Capacitor Positive Termi-

nal. This node is switched between VIN and GND (It is

connected to VCC during shutdown).

C– (Pin 4): Charge Pump Flying Capacitor Negative Termi-

nal. This node is switched between GND and VOUT (It is

connected to GND during shutdown).

GND (Pin 5): Signal and Power Ground for the 6-Pin

SOT-23 package. This pin should be tied to a ground plane

for best performance.

SHDN (Pin 6): Shutdown. Grounding this pin shuts down

the IC. Tie to VIN to enable. This pin should not be pulled

above the VIN voltage or below GND.

BLOCK DIAGRA

CONTROL

LOGIC

CLOCK2

CLOCK1

S1A

S2A

S1B

S2B

VREF

CHARGE PUMP

SHDN

VIN

CIN

µF

CFLY

µF

COUT

µF

LTC1983-X

C+

C–

VOUT

COMP1

µA

1983 BD

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