Datasheet

LT8582
30
8582f
TYPICAL APPLICATIONS
1.5MHz, 5V to ±12V Boost and Inverting Converter Can Survive Output Shorts
Efficiency and Power Loss
(Load Between 12V and –12V Outputs)
Output Short from 12V Output to Ground
Transient Response with 0.15A to 0.45A to 0.15A
Output Load Step Between Rails
LOAD CURRENT (A)
0
20
EFFICIENCY (%)
POWER LOSS (W)
30
80
70
60
50
90
0.2
0.3 0.6
8582 TA02b
40
0.1
0.4
0.5
100
0
0.4
2.4
2.0
1.6
1.2
2.8
0.8
3.2
V
OUT1
5V/DIV
CLKOUT1
5V/DIV
GATE
5V/DIV
I
L1
5A/DIV
20µs/DIV
8582 TA02c
V
OUT1
500mV/DIV
AC-COUPLED
V
OUT2
500mV/DIV
AC-COUPLED
I
L1
1A/DIV
I
L2
+ I
L3
1A/DIV
100µs/DIV
8582 TA02d
SWB2
SWA2
SWB1
SWA1
LT8582
8582 TA02a
PG1
SYNC1
CLKOUT1
CLKOUT2
215k
100k
SYNC2
PG2
V
IN2
SHDN2
V
IN1
SHDN1
V
C1
SS1
RT1
GND
RT2
SS2
GATE2
V
C2
FBX2
FBX1
GATE1
V
OUT1
12V
0.8A*
V
OUT2
–12V
550mA*
C1
2.2µF
V
IN
5V
0.1µF
0.1µF
4.7nF
47pF
47pF
14.7k
6.49k
100k
215k
143k
L2
4.7µH
s
L1
4.7µH
2.2nF
6.04k
C
OUT3
10µF
C
OUT2
10µF
130k
53.6k
53.6k
C
IN2
4.7µF
C
IN1
, C
IN2
: 4.7µF, 16V, X7R, 1206
C
OUT1
, C
OUT2
, C
OUT3
: 10µF, 25V, X7R, 1206
C1: 2.2µF, 25V, X7R, 1206
D1, D2: DIODES INC. PD3S230H
L1: COILCRAFT XAL6060-472ML
L2, L3: COILCRAFT MSD7342-472
M1: FAIRCHILD FDMC510P
*MAX TOTAL OUTPUT POWER: 14.4W
C
OUT1
10µF
D1
M1
C
IN1
4.7µF
D2
L3
4.7µH
s