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LTC3537 Datasheet(PDF) 6 Page - Linear Technology

No. de pieza LTC3537
Descripción Electrónicos  2.2 MHz, 600mA Synchronous Step-Up DC/DC Converter and 100mA LDO
PDF  20 Pages
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Fabricante Electrónico  LINER [Linear Technology]
Página de inicio  http://www.linear.com
Logo LINER - Linear Technology

LTC3537 Datasheet(HTML) 6 Page - Linear Technology

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LTC3537
6
3537fa
TYPICAL PERFORMANCE CHARACTERISTICS
Voltage Feedback Change
vs Temperature
Start-Up Voltage vs Temperature
Burst Mode Quiescent Current
vs VOUTB
TA = 25°C unless otherwise noted.
TEMPERATURE (°C)
–40
0.05
0.00
–0.10
–0.15
–0.20
–0.25
–0.30
40
60
20
0
3537 G16
80
–20
NORMALIZED TO 20°C
VFBB AND VFBL
TEMPERATURE (°C)
–40
0.80
0.75
0.70
0.65
0.60
0.55
0.50
40
60
20
0
3537 G17
80
–20
VOUTB (V)
1.8
60
50
30
40
20
10
3.8
4.3
3.3
2.8
3537 G18
4.8
2.3
ENLDO = HIGH
RDS(ON) vs VOUTB
Oscillator Frequency Change vs
Temperature
RDS(ON) Change vs Temperature
VOUTB (V)
1.5
1.0
0.9
0.8
0.7
0.6
0.5
0.3
0.4
0.2
3.5
4
4.5
3
2.5
3537 G13
5
2
NMOS
PMOS
TEMPERATURE (°C)
–40
1
0
–1
–2
–3
–4
40
60
20
0
3537 G14
80
–20
NORMALIZED TO 25°C
TEMPERATURE (°C)
–40
30
20
10
0
–10
–20
–30
40
60
20
0
3537 G15
80
–20
NMOS
PMOS
NORMALIZED TO 25°C
Burst Mode Threshold Current
vs VINB
Burst Mode Threshold Current
vs VINB
Oscillator Frequency Change
vs VOUTB
VINB (V)
0.8
60
50
40
30
20
10
0
2.3
1.8
3537 G10
1.3
VOUTB = 3.3V
COUT = 4.7μF
L = 2.2μH
LEAVE BURST
ENTER BURST
VINB (V)
0.8
120
100
80
60
40
20
0
2.8
3.3
3.8
2.3
1.8
3537 G11
4.3
1.3
VOUTB = 5V
COUT = 4.7μF
L = 2.2μH
LEAVE BURST
ENTER BURST
VOUTB (V)
1.5
1
0
–1
–2
–3
–5
–4
–6
3.5
4
4.5
3
2.5
3537 G12
5
2
NORMALIZED TO 3.3V



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