Datasheet

LT3011
14
3011f
TYPICAL APPLICATIONS
LOAD CURRENT (A)
0
EFFICIENCY (%)
80
90
100
1.00
3011 TA04
70
60
50
0.25
0.50
0.75
1.25
V
IN
= 10V
V
IN
= 42V
V
OUT
= 5V
L = 68MH
BOOST
V
IN
6
2
10
12
D1
10MQ060N
R1
15.4k
V
OUT
5V
1A/250mA
4
3, 11
10
8
5
1
2
15
14
11
C
C
1nF
FOR INPUT VOLTAGES BELOW 7.5V,
SOME RESTRICTIONS MAY APPLY
INCREASE L1 TO 30MH FOR LOAD
CURRENTS ABOVE 0.6A AND TO
60MH ABOVE 1A.
LT3011 PIN NUMBERS ARE FOR
THE DD PACKAGE.
1, 8, 9, 16
LT1766
SHDN
SYNC
SW
BIAS
FB
V
C
GND
C2
0.33MF
C1
100MF 10V
SOLID
TANTALUM
L1
†
15MH
D2
D1N914
R2
4.99k
3011 TA03
750k
249k
C3
4.7MF
100V
CERAMIC
V
IN
5.5V*
TO 60V
+
ADJ
OUTIN
SHDN
PWRGD
LT3011
GND
6
C
T
OPERATING
CURRENT
HIGH
LOW
*
†
100k
1000pF
+
ADJ
OUTIN
SHDN
LT3011
GND
ON
OFF
1MF
1MF
750k
V
IN
12V
(FUTURE 42V)
LOAD: CLOCK,
SECURITY SYSTEM
ETC
+
–
ADJ
OUTIN
SHDN
LT3011
GND
ON
OFF
1MF
1MF
V
IN
48V
(72V TRANSIENT)
LOAD:
SYSTEM MONITOR
ETC
NO PROTECTION
DIODE NEEDED!
NO PROTECTION
DIODE NEEDED!
3011 TA05
BACKUP
BATTERY
249k
750k
249k
5V Buck Converter with Low Current Keep Alive Backup
Buck Converter
Effi ciency vs Load Current
LT3011 Automotive Application
LT3011 Telecom Application