LTC1261L Ver la hoja de datos (PDF) - Linear Technology
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LTC1261L Datasheet PDF : 14 Pages
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LTC1261L
ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C, C1 = 0.1µF, COUT = 3.3µF unless otherwise noted. (Notes 2, 4)
SYMBOL PARAMETER
CONDITIONS
VCC
Supply Voltage
LTC1261LCMS8/LTC1261LCS8
LTC1261LCMS8-4/LTC1261LCS8-4 (Note 5)
LTC1261LCMS8-4.5/LTC1261LCS8-4.5 (Note 5)
VREF
Reference Voltage
ICC
Supply Current
fOSC
Internal Oscillator Frequency
VOL
REG Output Low Voltage
IREG
REG Sink Current
IADJ
Adjust Pin Current
VIH
SHDN Input High Voltage
VIL
SHDN Input Low Voltage
IIN
SHDN Input Current
tON
Turn-On Time
VOUT
Output Regulation (LTC1261L)
Output Regulation
(LTC1261L/LTC1261L-4)
Output Regulation
(LTC1261L/LTC1261L-4.5)
ISC
Output Short-Circuit Current
VCC = 5.25V, No Load, SHDN Floating
VCC = 5.25V, No Load, VSHDN = VCC
VCC = 5V, VOUT = –4V
IREG = 1mA, VCC = 5V, VOUT = –4V
VREG = 0.8V, VCC = 3.3V
VREG = 0.8V, VCC = 5V
VADJ = 1.23V
VCC = 5V
VCC = 5V
VSHDN = VCC
VCC = 5V, IOUT = 10mA, –1.5V ≤ VOUT ≤ –4V (LTC1261L)
VCC = 5V, IOUT = 5mA, VOUT = –4.5V (LTC1261L)
VCC = 5V, IOUT = 10mA, VOUT = –4V (LTC1261L-4)
VCC = 5V, IOUT = 5mA, VOUT = –4.5V (LTC1261L-4.5)
2.70V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 10mA
3.25V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 20mA
2.70V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 5mA
2.95V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 10mA
3.50V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 20mA
2.95V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 5mA
3.30V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 10mA
3.85V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 20mA
3.40V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 5mA
3.70V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 10mA
4.25V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 20mA
3.85V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 5mA
4.10V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 10mA
4.60V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 20mA
4.35V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 5mA
4.60V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 10mA
5.10V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 20mA
4.75V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 5mA
5.05V ≤ VCC ≤ 5.25V, 0mA ≤ IOUT ≤ 10mA
VOUT = 0V, VCC = 5.25V
MIN TYP MAX UNITS
l 2.7
l 4.35
l 4.75
5.25
V
5.25
V
5.25
V
1.23
V
l
650 1500
µA
l
5
20
µA
650
kHz
l
0.1 0.8
V
l4
8
mA
l5
12
mA
l
±0.01 ±1
µA
l2
V
l
0.8
V
l
2.5 25
µA
l
250 1500
µs
l
250 1500
µs
l
250 1500
µs
l
250 1500
µs
l –1.552 –1.5 –1.448
V
l –1.552 –1.5 –1.448
V
l –2.070 –2.0 –1.930
V
l –2.070 –2.0 –1.930
V
l –2.070 –2.0 –1.91
V
l –2.587 –2.5 –2.413
V
l –2.587 –2.5 –2.413
V
l –2.587 –2.5 –2.41
V
l –3.105 –3.0 –2.895
V
l –3.105 –3.0 –2.895
V
l –3.105 –3.0 –2.885
V
l –3.622 –3.5 –3.378
V
l –3.622 –3.5 –3.378
V
l –3.622 –3.5 –3.365
V
l –4.140 –4.0 –3.860
V
l –4.140 –4.0 –3.860
V
l –4.140 –4.0 –3.83
V
l –4.657 –4.5 –4.343
V
l –4.657 –4.5 –4.343
V
l
100 220
mA
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: All currents into device pins are positive; all currents out of device
pins are negative. All voltages are referenced to ground unless otherwise
specified.
Note 3: The output should never be set to exceed VCC – 10.8V.
Note 4: The LTC1261LC is guaranteed to meet specifications from 0°C
to 70°C and is designed, characterized and expected to meet industrial
temperature limits, but is not tested at –40°C and 85°C. The LTC1261LI
is guaranteed to meet specifications from –40°C and 85°C.
Note 5: The LTC1261L-4 and LTC1261L-4.5 will operate with less than the
minimum VCC specified in the electrical characteristics table, but they are
not guaranteed to meet the ±4.5% VOUT specification.
1261lfa
3
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