LT3013MPFE Linear Technology, LT3013MPFE Datasheet - Page 18

• Manufacturer Part Number: LT3013MPFE
• Description: SP-LINREG, 80Vin, 250mA, LDO W/ PWRGD In TSSOP
• Manufacturer: Linear Technology

LOW
LT3013
TYPICAL APPLICATIONS
OPERATING
18
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
BOOST
LT3013
1
OFF
OFF
12V
V
6
IN
ON
ON
48V
C
V
T
10
+
IN
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
*
†
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
NO PROTECTION
DIODE NEEDED!
IN
SHDN
15μH
L1
†
LT3013 Automotive Application
D1N914
R1
15.4k
R2
4.99k
LT3013
LT3013 Telecom Application
GND
D2
+
OUT
ADJ
C1
100μF 10V
SOLID
TANTALUM
IN
SHDN
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
3013fe