Chip information, Table 2. design examples using dcm, Table 3. component manufacturers – Rainbow Electronics MAX1524 User Manual
Page 13
MAX1522/MAX1523/MAX1524
Simple SOT23 Boost Controllers
______________________________________________________________________________________
13
PARAMETER
EXAMPLE 4
EXAMPLE 5
V
IN
2.7V to 4.2V
1.8V to 3.0V
V
OUT
24V
3.3V
I
OUT(MAX)
30mA
100mA
R1, R2
909k
Ω
, 49.9k
Ω
150k
Ω
, 93.1k
Ω
Duty Cycle (max)
89.0%
52.6%
t
ON
3µs
(SET = V
CC
)
0.5µs
(SET = GND)
L
IDEAL
11.9µH
1.14µH
L
ACTUAL
Sumida
CDRH5D28-100
10µH, 65m
Ω
,
1.3A
Sumida
CDRH4D18-1R0
1µH, 45m
Ω
,
1.72A
I
PEAK
1.51A
1.80A
P
LR
4.5mW at
I
OUT
= 10mA
5.7mW
I
OUT
= 50mA
f
SWITCHING
208kHz when
I
OUT
= 20mA
737kHz when
I
OUT
= 100mA
C
OUT(MIN)
to
C
OUT(MAX)
0.8µF to 2.7µF
3µF to 97µF
C
OUT(ACTUAL)
Taiyo Yuden
GMK325BJ225K
2.2µF, X5R, 35V,
1210
Taiyo Yuden
TMK316BT106ML
10µF, X7R, 6.3V,
1206
ESR
COUT(ACTUAL)
10m
Ω
10m
Ω
V
RIP P LE ( C OU T+ E S R )
126mVp-p
40mVp-p
C
FF
100pF
220pF
C
FB
220pF
100pF optional
C
IN
10µF, 6.3V
10µF, 6.3V
MOSFET
Fairchild
FDC633N
Vishay Si2302DS
Qg
8nC at Vgs = 3V
5nC at Vgs = 3.3V
I
GATE
1.7mA
nonbootstrapped
3.7mA
bootstrapped
I
DIODE(RMS)
0.17A
0.42A
Diode
Nihon
EP10QY03, 1A
Nihon
EP10QY03, 1A
Table 2. Design Examples Using DCM
MANUFACTURER
PHONE
WEB
Coilcraft
847-639-6400
www.coilcraft.com
Fairchild
800-341-0392
www.fairchildsemi.com
International
Rectifier
310-322-3331
www.irf.com
Kemet
408-986-0424
www.kemet.com
NIC Components
408-954-8470
www.niccomp.com
Panasonic
847-468-5624
www.panasonic.com
Sumida
847-956-0666
www.sumida.com
Taiyo Yuden
408-573-4150
www.t-yuden.com
Table 3. Component Manufacturers
Chip Information
TRANSISTOR COUNT: 1302