Datasheet

16
LT1054/LT1054L
1054lfe
 LINEAR TECHNOLOGY CORPORATION 1987
LT/TP 0104 1K REV E • PRINTED IN USA
TYPICAL APPLICATIONS N
U
Negative Doubler with Regulator
2µF
V
IN
3.5V TO 15V
100µF
R2
1M
1N4001
1N4001
LT1054 • TA14
100µF
0.002µF
–V
OUT
V
IN
= 3.5V TO 15V
V
OUT(MAX)
≈ –2V
IN
+ (V
L
+ 2V
DIODE
)
V
L
= LT1054 VOLTAGE LOSS
, REFER TO FIGURE 5
R2
R1
==+ 1
|V
OUT
|
) )
V
REF
2
– 40mV
) )
+ 1
|V
OUT
|
1.21V
10µF
+
+
+
+
10µF
+
LT1054
FB/SHDN
CAP
+
GND
CAP
–
V
+
OSC
V
REF
V
OUT
R1, 20k
0.03µF
V
IN
= 5V
50k
1N5817
1N5817
LT1054 • TA13
–
+
10k
10k
10k
5.5k
2.5k
0.1µF
5V
LT1006
100µF
V
OUT
8V
50mA
2µF
10µF
+
+
+
LT1054
FB/SHDN
CAP
+
GND
CAP
–
V
+
OSC
V
REF
V
OUT
Positive Doubler with Regulation
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC1144 Switched-Capacitor Wide Input Range Voltage Converter Wide Input Voltage Range: 2V to 18V, I
SD
< 8µA, SO8
with Shutdown
LTC1514/LTC1515 Step-Up/Step-Down Switched Capacitor DC/DC Converters V
IN
: 2V to 10V, V
OUT
: 3.3V to 5V, I
Q
= 60µA, SO8
LT1611 150mA Output, 1.4mHz Micropower Inverting Switching Regulator V
IN
: 0.9V to 10V, V
OUT
: ±34V ThinSOT
LT1614 250mA Output, 600kHz Micropower Inverting Switching Regulator V
IN
: 0.9V to 6V, V
OUT
: ±30V, I
Q
= 1mA, MS8, SO8
LTC1911 250mA, 1.5MHz Inductorless Step-Down DC/DC Converter V
IN
: 2.7V to 5.5V, V
OUT
: 1.5V/1.8V, I
Q
= 180µA, MS8
LTC3250/LTC3250-1.2/ Inductorless Step-Down DC/DC Converter V
IN
: 3.1V to 5.5V, V
OUT
: 1.2V, 1.5V, I
Q
= 35µA, ThinSOT™
LTC3250-1.5
LTC3251 500mA Spread Spectrum Inductorless Step-Down DC/DC Converter V
IN
: 2.7V to 5.5V, V
OUT
: 0.9V to 1.6V, 1.2V, 1.5V,
I
Q
= 9µA, MS10E
LTC3252 Dual 250mA, Spread Spectrum Inductorless Step-Down V
IN
: 2.7V to 5.5V, V
OUT
: 0.9V to 1.6V, I
Q
= 50µA, DFN12
DC/DC Converter
ThinSOT is a trademark of Linear Technology Corporation.
THE TYPICAL APPLICATIONS CIRCUITS WERE VERIFIED USING THE STANDARD LT1054. FOR S8 APPLICATIONS
ASSISTANCE IN ANY OF THE UNUSUAL APPLICATIONS CIRCUITS PLEASE CONSULT THE FACTORY