LTC1044A(Rev0) Просмотр технического описания (PDF) - Linear Technology
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LTC1044A Datasheet PDF : 12 Pages
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LTC1044A
W WW U
ABSOLUTE AXI U RATI GS
(Note 1)
Supply Voltage ........................................................ 13V
Input Voltage on Pins 1, 6 and 7
(Note 2) .............................. – 0.3V < VIN < V + + 0.3V
Current into Pin 6 ................................................. 20µA
Output Short-Circuit Duration
V + ≤ 6.5V ................................................. Continuous
Operating Temperature Range
LTC1044AC ............................................ 0°C to 70°C
LTC1044AI ........................................ – 40°C to 85°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER I FOR ATIO
BOOST 1
CAP+ 2
GND 3
CAP– 4
TOP VIEW
8 V+
7 OSC
6 LV
5 VOUT
N8 PACKAGE
8-LEAD PLASTIC DIP
TJMAX = 110°C, θJA = 100°C/W
TOP VIEW
BOOST 1
CAP+ 2
GND 3
CAP– 4
8 V+
7 OSC
6 LV
5 VOUT
S8 PACKAGE
8-LEAD PLASTIC SOIC
TJMAX = 110°C, θJA = 130°C/W
Consult factory for Military grade parts
ORDER PART
NUMBER
LTC1044ACN8
LTC1044AIN8
ORDER PART
NUMBER
LTC1044ACS8
LTC1044AIS8
S8 PART MARKING
1044A
1044AI
ELECTRICAL CHARACTERISTICS V+ = 5V, COSC = 0pF, TA = 25°C, See Test Circuit, unless otherwise noted.
SYMBOL
IS
ROUT
fOSC
PEFF
PARAMETER
Supply Current
Minimum Supply Voltage
Maximum Supply Voltage
Output Resistance
Oscillator Frequency
Power Efficiency
Voltage Conversion Efficiency
Oscillator Sink or Source
Current
CONDITIONS
RL = ∞, Pins 1 and 7, No Connection
RL = ∞, Pins 1 and 7, No Connection,
V + = 3V
RL = 10k
RL = 10k
IL = 20mA, fOSC = 5kHz
V + = 2V, IL = 3mA, fOSC = 1kHz
V + = 5V, (Note 3)
V + = 2V
RL = 5k, fOSC = 5kHz
RL = ∞
VOSC = 0V or V +
Pin 1 (BOOST) = 0V
Pin 1 (BOOST) = V +
LTC1044AC
MIN TYP MAX
60 200
15
LTC1044AI
MIN TYP MAX
60 200
15
UNITS
µA
µA
q 1.5
1.5
V
q
12
12
V
100
100
Ω
q
120
130
Ω
q
310
325
Ω
q5
5
kHz
q1
1
kHz
95 98
95 98
%
97 99.9
97 99.9
%
q
3
3
µA
q
20
20
µA
The q denotes specifications which apply over the full operating
temperature range; all other limits and typicals 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 sources operating from external supplies be applied prior to
power-up of the LTC1044A.
Note 3: 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.
2
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