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LT1054_15 Datasheet, PDF (5/33 Pages) Linear Technology – Switched-Capacitor Voltage Converter with Regulator
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LT1054
SLVS033G – FEBRUARY 1990 – REVISED JULY 2015
6.5 Electrical Characteristics
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VO Regulated output voltage VCC = 7 V, TJ = 25°C, RL = 500 Ω (3)
Input regulation
VCC = 7 V to 12 V, RL = 500 Ω(3)
Output regulation
VCC = 7 V, RL = 100 Ω to 500 Ω(3)
Voltage loss,
VCC − |VO| (4)
Output resistance
CI = CO = 100-μF tantalum
ΔIO = 10 mA to 100 mA
IO = 10 mA
IO = 100 mA
See (5)
Oscillator frequency
VCC = 3.5 V to 15 V
Vref Reference voltage
I(REF) = 60 μA
Maximum switch current
ICC Supply current
Supply current in
shutdown
IO = 0
V(FB/SD) = 0 V
VCC = 3.5 V
VCC = 15 V
TA (1)
25°C
Full range
Full range
Full range
Full range
Full range
25°C
Full range
25°C
Full range
Full range
LT1054C, LT1054I
MIN TYP(2)
MAX
−4.7
−5
−5.2
5
25
10
50
0.35
0.55
1.1
1.6
10
15
15
25
35
2.35
2.5
2.65
2.25
2.75
300
4
2.5
5
3
200
100
UNIT
V
mV
mV
V
Ω
kHz
V
mA
mA
μA
(1) Full range is 0°C to 70°C for the LT1054C and −40°C to 85°C for the LT1054I.
(2) All typical values are at TA = 25°C.
(3) All regulation specifications are for a device connected as a positive-to-negative converter/regulator with R1 = 20 kΩ, R2 = 102.5 kΩ,
external capacitor CIN = 10 μF (tantalum), external capacitor COUT = 100 μF (tantalum) and C1 = 0.002 μF (see ).
(4) For voltage-loss tests, the device is connected as a voltage inverter, with terminals 1, 6, and 7 unconnected. The voltage losses may be
higher in other configurations. CIN and COUT are external capacitors.
(5) Output resistance is defined as the slope of the curve (ΔVO versus ΔIO) for output currents of 10 mA to 100 mA. This represents the
linear portion of the curve. The incremental slope of the curve is higher at currents less than 10 mA due to the characteristics of the
switch transistors.
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