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