LTC3200 データシートの表示（PDF） - Linear Technology

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LTC3200

Low Noise, Regulated Charge Pump DC/DC Converters

Linear Technology 

LTC3200/LTC3200-5

TYPICAL PERFOR A CE CHARACTERISTICS (LTC3200-5) TA = 25°C

VOUT Soft-Start Ramp

VSHDN

2V/DIV

VOUT

1V/DIV

VIN = 3V

200µs/DIV

Output Ripple

VOUT (AC

COUPLED)

20mV/DIV

COUT = 1µF

COUT = 3.3µF

COUT = 10µF

32005 G08

VIN = 3.3V

IL = 100mA

200ns/DIV

Load Transient Response

IL

10mA TO

90mA

50mA/DIV

VOUT

(AC

COUPLED)

50mV/DIV

32005 G09

VIN = 3.3V

COUT = 1µF

10µs/DIV

32005 G10

PIN FUNCTIONS LTC3200/LTC3200-5

C+ (Pins 1/6): Flying Capacitor Positive Terminal.

VIN (Pins 2/5): Input Supply Voltage. VIN 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 VOUT to FB to program

the output voltage.

VOUT (Pins 8/1): Regulated Output Voltage. VOUT should

be bypassed with a 1µF to 4.7µF low ESR ceramic capaci-

tor as close as possible to the pin for best performance.

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