LT1054_10 Datasheet, PDF (11/16 Pages) Linear Technology – Switched-Capacitor Voltage Converter with Regulator

LT1054/LT1054L
TYPICAL APPLICATIONS
Bipolar Supply Doubler
V_IN
3.5V TO 15V
+
+V_OUT
100µF
10µF
–
10µF
10µF
V_IN = 3.5V TO 15V
+V_OUT ≈ 2V_IN – (V_L + 2V_DIODE)
–V_OUT ≈ –2V_IN + (V_L + 2V_DIODE)
V_L = LT1054 VOLTAGE LOSS
= 1N4001
FB/SHDN V⁺
CAP⁺ OSC
LT1054
GND V_REF
CAP ^– V_OUT
100µF
100µF
–V_OUT
LT1054 • TAO7
5V to ± 12V Converter
V_IN = 5V
10µF
5µF
FB/SHDN V⁺
CAP⁺ OSC
LT1054 #1
GND V_REF
CAP ^– V_OUT
V_OUT ≈ 12V
I_OUT = 25mA
100µF
2N2219
1k
1N914
100µF
5µF
1N914
10µF _{FB/SHDN V+}
CAP⁺ OSC
10µF LT1054 #2
GND V_REF
CAP ^– V_OUT
TO PIN 4
LT1054 #1
20k
100µF
V_OUT ≈ –12V
I_OUT = 25mA
LT1054 • TAO8
Strain Gauge Bridge Signal Conditioner
INPUT TTL
OR CMOS
LOW FOR ON
10µF
10k
5V
10k
2N2907
0.022µF ⁸
2 ^100k
1
A1
1/2 LT1013
3
100k
200k
10k
40Ω
ZERO
TRIM
301k
350Ω
10µF
5k
GAIN
5k ^TRIM _{6 –}
A2
10k
5 +^{1/2 LT1013}
4
1µF
1M
7
FB/SHDN V⁺ 5V
CAP⁺ OSC
LT1054
GND V_REF
CAP ^– V_OUT
3k
2N2222
100µF
TANTALUM
LT1054 • TAO9
A = 125 FOR 0V TO 3V OUT FROM FULL-SCALE
BRIDGE OUTPUT OF 24mV
1954lff
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