參數(shù)資料
型號： LT1054CN8
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： Switched-Capacitor Voltage Converter with Regulator
中文描述： SWITCHED CAPACITOR REGULATOR, 25 kHz SWITCHING FREQ-MAX, PDIP8
封裝： 0.300 INCH, PLASTIC, DIP-8
文件頁數(shù)： 3/26頁
文件大?。?/td> 444K
代理商： LT1054CN8
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
LT1054C
LT1054I
TYP
UNIT
TA
MIN
MAX
VO
Regulated output voltage
VCC = 7 V, TJ = 25
°
C, RL = 500
, See Note 5
VCC = 7 V to 12 V, RL = 500
, See Note 5
VCC = 7 V, RL = 100
to 500
, See Note 5
25
°
C
Full range
4.7
5
5.2
V
Input regulation
5
25
mV
Output regulation
Full range
10
50
mV
Voltage loss,
VCC |VO
(see Note 6)
Output resistance
CI = CO = 100- F tantalum
μ
IO = 10 mA
IO = 100 mA
See Note 7
Full range
0.35
0.55
V
1.1
1.6
IO = 10 mA to 100 mA,
VCC = 3.5 V to 15 V
Full range
10
15
Oscillator frequency
Full range
25
°
C
Full range
25
°
C
15
25
35
kHz
Vref
Reference voltage
I(REF) = 60 A
μ
2.35
2.5
2.65
V
2.25
2.75
Maximum switch current
300
mA
ICC
Supply current
IO = 0
VCC = 3.5 V
VCC = 15 V
Full range
2.5
4
mA
3
5
Supply current in shutdown
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
, R2 = 102.5 k
,
external capacitor CIN = 10
μ
F (tantalum), external capacitor COUT = 100
μ
F (tantalum) and C1 = 0.002
μ
F (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.
V(FB/SD) = 0 V
Full range
100
200
μ
A
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