LTC1522CMS8 데이터 시트보기 (PDF) - Linear Technology
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LTC1522CMS8 Datasheet PDF : 8 Pages
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TYPICAL PERFORMANCE CHARACTERISTICS
LTC1522
Output Voltage vs Input Voltage
5.15
IOUT = 10mA
COUT = 10µF
5.10
5.05
TA = 70°C
5.00
TA = 25°C
TA = 0°C
4.95
4.90
2.5
3.0 3.5 4.0 4.5 5.0
INPUT VOLTAGE (V)
1522 G01
No Load Input Current
vs Input Voltage
9
IOUT = 0mA
8
7
TA = 70°C
TA = 25°C
6
TA = 0°C
5
4
2.5 3.0 3.5 4.0 4.5 5.0
INPUT VOLTAGE (V)
1522 G04
Efficiency vs Input Voltage
90
IOUT = 10mA
TA = 25°C
80
70
60
50
Output Ripple vs Input Voltage
250
IOUT = 10mA
CFLY = 0.1µF
200 TA = 25°C
COUT = 3.3µF
150
COUT = 6.8µF
100
COUT = 10µF
50
COUT = 22µF
40
2.5
3.0 3.5 4.0 4.5 5.0
INPUT VOLTAGE (V)
1522 G02
0
2.5 3.0 3.5 4.0 4.5 5.0
INPUT VOLTAGE (V)
1522 G03
Typical Output Voltage
vs Output Current
5.2
TA = 25°C
CFLY = 0.1µF
COUT = 6.8µF
5.1
Load Transient Response
IOUT
0mA TO 10mA
10mA/DIV
5.0
4.9
4.8
0
VIN = 2.7V
VIN = 3V
VIN = 3.3V
VOUT
AC COUPLED
50mV/DIV
VIN = 3V
COUT = 10µF
20
40
60
OUTPUT CURRENT (mA)
80
1522 G05
500µs/DIV
1522 G06
PIN FUNCTIONS
NC (Pin 1): No Connect.
VIN (Pin 2): Input Supply Voltage. Bypass VIN with a
≥ 3.3µF low ESR capacitor.
VOUT (Pin 3): 5V Output Voltage (VOUT = 0V in Shutdown).
Bypass VOUT with a ≥ 3.3µF low ESR capacitor.
C+ (Pin 4): Flying Capacitor, Positive Terminal.
C – (Pin 5): Flying Capacitor, Negative Terminal.
GND (Pin 6): Ground.
SHDN (Pin 7): Active High CMOS Logic-Level Shutdown
Input. Drive SHDN low to enable the DC/DC converter. Do
not float.
NC (Pin 8): No Connect.
3
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