LT3013 LINER [Linear Technology], LT3013 Datasheet - Page 18

• Manufacturer Part Number: LT3013
• Description: 250mA, 4V to 80V Low Dropout Micropower Linear Regulator with PWRGD
• Manufacturer: LINER [Linear Technology]

LT3013
TYPICAL APPLICATIONS
LOW
18
OPERATING
CURRENT
TO 60V
5.5V*
HIGH
V
IN
100k
C3
4.7µF
100V
CERAMIC
15
14
14
11
4
7
(72V TRANSIENT)
(LATER 42V)
V
SHDN
SYNC
IN
SHDN
PWRGD
GND
IN
GND
1, 8, 9, 16
LT1766
LT3013
OFF
OFF
BOOST
1
12V
V
IN
6
ON
ON
48V
V
C
+
IN
T
10
BIAS
V
OUT
ADJ
SW
C
FB
11
1000pF
C
1nF
2
10
12
C
3
5
5V Buck Converter with Low Current Keep Alive Backup
750k
249k
1µF
1µF
D1
10MQ060N
C2
0.33µF
*
†
NO PROTECTION
FOR INPUT VOLTAGES BELOW 7.5V,
SOME RESTRICTIONS MAY APPLY
INCREASE L1 TO 30µH FOR LOAD
CURRENTS ABOVE 0.6A AND TO
60µH ABOVE 1A
DIODE NEEDED!
IN
SHDN
15µH
L1
LT3013 Automotive Application
†
LT3013
D1N914
R1
15.4k
R2
4.99k
LT3013 Telecom Application
GND
D2
+
OUT
ADJ
IN
SHDN
C1
100µF 10V
SOLID
TANTALUM
LT3013
750k
249k
GND
NO PROTECTION
DIODE NEEDED!
OUT
ADJ
3013
TA03
V
5V
1A/250mA
OUT
750k
249k
3.3µF
3.3µF
SYSTEM MONITOR
SECURITY SYSTEM
LOAD: CLOCK,
100
LOAD:
90
70
60
50
80
ETC
ETC
0
Effi ciency vs Load Current
V
L = 68µH
3013 TA05
OUT
= 5V
0.25
Buck Converter
LOAD CURRENT (A)
0.50
+
–
BACKUP
BATTERY
V
V
IN
IN
0.75
= 10V
= 42V
1.00
3013 TA04
1.25
3013fc