LTC660 데이터 시트보기 (PDF) - Linear Technology
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LTC660 Datasheet PDF : 12 Pages
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LTC660
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage (V +) .................................................. 6V
Input Voltage on Pins 1, 6, 7
(Note 2) ............................ – 0.3V < VIN < (V + + 0.3V)
Output Short-Circuit Duration to GND
(Note 5) ............................................................. 1 sec
Power Dissipation.............................................. 500mW
Operating Temperature Range .................... 0°C to 70°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
BOOST 1
CAP+ 2
GND 3
CAP– 4
TOP VIEW
8 V+
7 OSC
6 LV
5 VOUT
N8 PACKAGE
8-LEAD PLASTIC DIP
S8 PACKAGE
8-LEAD PLASTIC SOIC
TJMAX = 100°C, θJA = 100°C/W (N)
TJMAX = 100°C, θJA = 150°C/W (S)
ORDER PART
NUMBER
LTC660CN8
LTC660CS8
S8 PART MARKING
660
Consult Factory for Industrial and Military grade parts.
ELECTRICAL CHARACTERISTICS
V + = 5V, C1 and C2 = 150µF, Boost = Open, COSC = 0pF, TA = 25°C, unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX
Supply Voltage
IS
Supply Current
RL = 1k
No Load
Inverter, LV = Open
Inverter, LV = GND
Doubler, LV = VOUT
Boost = Open
Boost = V +
q
3
5.5
q
1.5
5.5
q
2.5
5.5
q
0.08 0.5
q
0.23 3
IOUT
Output Current
ROUT Output Resistance
fOSC Oscillator Frequency
VOUT More Negative Than – 4V
IL = 100mA (Note 3)
Boost = Open
Boost = V + (Note 4)
q 100
q
6.5 10
10
80
Power Efficiency
Voltage Conversion Efficiency
RL = 1k Connected Between V + and VOUT
RL = 500Ω Connected Between VOUT and GND
IL = 100mA to GND
No Load
q
96 98
q
92 96
88
99 99.96
Oscillator Sink or Source Current Boost = Open
± 1.1
Boost = V +
± 5.0
UNITS
V
V
V
mA
mA
mA
Ω
kHz
kHz
%
%
%
%
µA
µA
The q denotes specifications which apply over the full operating
temperature range; all other limits and typicals are at TA = 25°C.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Connecting any input terminal to voltages greater than V + or less
than ground may cause destructive latch-up. It is recommended that no
inputs from source operating from external supplies be applied prior to
power-up of the LTC660.
Note 3: The output resistance is a combination of internal switch
resistance and external capacitor ESR. To maximize output voltage and
efficiency, keep external capacitor ESR < 0.2Ω.
Note 4: fOSC is tested with COSC = 100pF to minimize the effects of test
fixture capacitance loading. The 0pF frequency is correlated to this 100pF
test point, and is intended to simulate the capacitance at Pin 7 when the
device is plugged into a test socket and no external capacitor is used.
Note 5: OUT may be shorted to GND for 1 sec without damage, but
shorting OUT to V + may damage the device and should be avoided. Also,
for temperatures above 85°C, OUT must not be shorted to GND or V +,
even instantaneously, or device damage may result.
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