LTC1517CS5-3.3 Просмотр технического описания (PDF) - Linear Technology
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LTC1517CS5-3.3 Datasheet PDF : 8 Pages
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LTC1517-3.3
TYPICAL PERFORMANCE CHARACTERISTICS
Oscillator Frequency vs
Input Voltage
900
TA = 25°C
800
700
Oscillator Frequency vs
Temperature
900
VIN = 2.5V
800
700
600
600
500
500
2.0
2.5 3.0 3.5 4.0 4.5
INPUT VOLTAGE (V)
1517 G07
400
–50 –25 0
25 50
TEMPERATURE (°C)
75 100
1517 G08
PIN FUNCTIONS
VIN (Pin 1): Charge Pump Input Voltage. May be between
2V and 4.4V. VIN should be bypassed with a ≥ 3.3µF low
ESR capacitor as close as possible to the pin for best
performance.
GND (Pin 2): Ground. Should be tied to a ground plane for
best performance.
VOUT (Pin 3): Regulated Output Voltage. VOUT should be
bypassed with a ≥ 3.3µF low ESR capacitor as close as
possible to the pin for best performance.
C1 + (Pin 4): Charge Pump Flying Capacitor Positive
Terminal.
C1 – (Pin 5): Charge Pump Flying Capacitor Negative
Terminal.
SI PLIFIED BLOCK DIAGRA
C1
0.1µF
4
VIN
CIN
C1–
C1+
CHARGE PUMP
700kHz
OSC
THERMAL
SHDN
1.25V
REF
2.05M
1.25M
VOUT
COUT
1517-3.3 BD
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