LT1111 Datasheet, PDF (15/16 Pages) Linear Technology – Micropower DC/DC Converter Adjustable and Fixed 5V, 12V

TYPICAL APPLICATI S
V_IN
5V INPUT
5V to –5V Converter
100Ω
+
22µF
I_LIM
V _IN
SW1
LT1111-5
SENSE
GND
SW2
L1*
33µH
MBRS130T3 ₊
33µF
* L1= SUMIDA CD54-330K
–5V OUTPUT
75mA
LT1111 • TA05
V_IN
5V TO 12V
Voltage Controlled Positive-to-Negative Converter
0.22Ω
ZETEX^†
ZTX788A
L1*
20µH, 3A
BAT54
220Ω
V _IN
I_LIM
220Ω
SW1
LT1111
FB
GND
SW2
V _IN
LT1006
+
MBRD320
200k
39k
47µF
–V_OUT = –5.13 × V_C
2W MAXIMUM OUTPUT
V_C (0V TO 5V)
LT1111
* L1 = COILTRONICS CTX20-4
† _{ZETEX INC. 516-543-7100}
LT1111 • TA07
V_IN
8V TO 18V
High Power, Low Quiescent Current Step-Down Converter
0.22Ω
MTM20P08
L1*
10µH, 3A
BAT54
V _IN
I_LIM
SW1
LT1111
FB
GND
SW2
+
2k
51Ω
MBRD320
220µF
2N3904
1N4148
121k
40.2k
* L1 = SUMIDA CDR105-100M
5V
500mA
OPERATE STANDBY
LT1111 • TA20
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.
15