LT1111 LINER [Linear Technology], LT1111 Datasheet - Page 15

• Manufacturer Part Number: LT1111
• Description: Micropower DC/DC Converter Adjustable and Fixed 5V, 12V
• Manufacturer: LINER [Linear Technology]

TYPICAL
A
8V TO 18V
PPLICATI
V
IN
5V TO 12V
OPERATE STANDBY
* L1 = COILTRONICS CTX20-4
†
V
GND
ZETEX INC. 516-543-7100
V
IN
IN
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
LT1111
0.22
O
GND
V
5V INPUT
IN
SW2
High Power, Low Quiescent Current Step-Down Converter
I
U
LIM
LT1111
SW1
* L1 = SUMIDA CD54-330K
0.22
FB
BAT54
S
Voltage Controlled Positive-to-Negative Converter
V
22 F
IN
SW2
I
LIM
SW1
+
FB
BAT54
220
2k
GND
I
LIM
5V to –5V Converter
LT1111-5
100
220
1N4148
ZTX788A
ZETEX
40.2k
SW2
SENSE
V
2N3904
IN
SW1
MBRS130T3
†
LT1006
V
MTM20P08
IN
* L1 = SUMIDA CDR105-100M
33 H
L1*
51
–
+
33 F
+
200k
MBRD320
MBRD320
20 H, 3A
121k
L1*
10 H, 3A
39k
–5V OUTPUT
75mA
L1*
LT1111 • TA05
+
+
47 F
220 F
–V
2W MAXIMUM OUTPUT
V
C
OUT
(0V TO 5V)
= –5.13 V
LT1111 • TA20
LT1111 • TA07
5V
500mA
C
LT1111
15