ltc3528b-2 Linear Technology Corporation, ltc3528b-2 Datasheet - Page 5

• Manufacturer Part Number: ltc3528b-2
• Description: 1a, 2mhz Synchronous Step-up Dc/dc Converter In 2mm ? 3mm Dfn
• Manufacturer: Linear Technology Corporation

TYPICAL PERFORMANCE CHARACTERISTICS
–0.25
–0.50
–0.75
–1.00
–1.25
–1.50
–1.75
–2.00
–2.25
0.50
0.25
–10
–20
10
30
20
0
0
1.5
–50 –30
Oscillator Frequency Change
vs V
R
DS(ON)
OUT
2
200mA/DIV
Change vs Temperature
2.5
–10
20mV/DIV
TEMPERATURE (°C)
V
OUT
V
10
3
I
OUT
L
Fixed Frequency V
Inductor Current Waveforms
V
V
C
C
I
L = 2.2μH
OUT
3.5
(V)
IN
OUT
OUT
FF
30
= 1.2V
= 33pF
= 100mA
= 3.3V
= 10μF
50
4
4.5
70
35282 G12
35282 G15
500ns/DIV
90
5
OUT
Ripple and
1.200
1.195
1.190
1.185
1.180
450
300
100
400
350
250
200
150
1.5
–50
R
V
35282 G19
DS(ON)
FB
–30
2
vs Temperature
vs V
2.5
–10
TEMPERATURE (°C)
OUT
V
10
3
OUT
PMOS
NMOS
3.5
(V)
30
200mA/DIV
SHDN PIN
4
50
1V/DIV
V
OUT
I
4.5
IN
70
35282 G13
35282 G16
(T
V
V
V
C
L = 2.2μH
OUT
IN
OUT
OUT
A
90
= 1.2V
5
= 25°C unless otherwise noted)
= 3.3V
= 10μF
and I
IN
850
800
750
700
650
600
–1
–2
–3
–4
–5
During Soft-Start
200μs/DIV
5
4
3
2
1
0
–50
–50
Oscillator Frequency Change
vs Temperature
Start-Up Voltage vs Temperature
NORMALIZED TO 25°C
–30
–30
–10
–10
LTC3528B-2
TEMPERATURE (°C)
TEMPERATURE (°C)
10
10
35282 G21
30
30
50
50
70
70
35282 G17
35282 G14
3528b2f
5
90
90