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LT1054 Datasheet(PDF) 3 Page - Texas Instruments

Part No. LT1054
Description  SWITCHED-CAPACITOR VOLTAGE CONVERTERS WITH REGULATORS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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LT1054 Datasheet(HTML) 3 Page - Texas Instruments

 
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LT1054
SWITCHEDCAPACITOR VOLTAGE CONVERTERS
WITH REGULATORS
SLVS033F − FEBRUARY 1990 − REVISED NOVEMBER 2004
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
electrical characteristics over recommended operating conditions (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TA†
LT1054C
LT1054I
UNIT
PARAMETER
TEST CONDITIONS
TA†
MIN
TYP‡
MAX
UNIT
VO
Regulated output voltage
VCC = 7 V, TJ = 25°C, RL = 500 Ω, See Note 5
25
°C
−4.7
−5
−5.2
V
Input regulation
VCC = 7 V to 12 V, RL = 500 Ω, See Note 5
Full range
5
25
mV
Output regulation
VCC = 7 V, RL = 100 Ω to 500 Ω, See Note 5
Full range
10
50
mV
Voltage loss,
CI = CO = 100- F tantalum
IO = 10 mA
Full range
0.35
0.55
V
Voltage loss,
VCC − |VO (see Note 6)
CI = CO = 100-µF tantalum
IO = 100 mA
Full range
1.1
1.6
V
Output resistance
∆IO = 10 mA to 100 mA,
See Note 7
Full range
10
15
Oscillator frequency
VCC = 3.5 V to 15 V
Full range
15
25
35
kHz
Vref
Reference voltage
I(REF) = 60 A
25
°C
2.35
2.5
2.65
V
Vref
Reference voltage
I(REF) = 60 µA
Full range
2.25
2.75
V
Maximum switch current
25
°C
300
mA
ICC
Supply current
IO = 0
VCC = 3.5 V
Full range
2.5
4
mA
ICC
Supply current
IO = 0
VCC = 15 V
Full range
3
5
mA
Supply current in shutdown
V(FB/SD) = 0 V
Full range
100
200
µA
† Full range is 0°C to 70°C for the LT1054C and −40°C to 85°C for the LT1054I.
‡ All typical values are at TA = 25°C.
NOTES:
5. All regulation specifications are for a device connected as a positive-to-negative converter/regulator with R1 = 20 k
Ω, R2 = 102.5 kΩ,
external capacitor CIN = 10 µF (tantalum), external capacitor COUT = 100 µF (tantalum) and C1 = 0.002 µF (see Figure 15).
6. 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.
7. Output resistance is defined as the slope of the curve (
∆VO versus ∆IO) 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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