参数资料
型号: LT3694-1IUFD#TRPBF
厂商: LINEAR TECHNOLOGY CORP
元件分类: 稳压器
英文描述: 2.6 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PQCC28
封装: 4 X 5 MM, LEAD FREE, PLASTIC, MO-220, QFN-28
文件页数: 23/28页
文件大小: 276K
代理商: LT3694-1IUFD#TRPBF
LT3694/LT3694-1
4
36941fa
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C, VIN = 12V, VBIAS = 3V, unless otherwise noted. (Notes 2, 9)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
LDO Regulator
Feedback Pin Voltage
l
735
750
765
mV
Feedback Pin Bias Current
l
–50
–500
nA
Error Amplifier Voltage Gain
2800
TRK/SS Pull-Up Current
–2
–3
–4
μA
TRK/SS Threshold to Shut Down LDO
35
50
70
mV
Line Regulation
5V < VIN < 36V
0.025
%/V
Load Regulation
IDRV From 0.1mA to 10mA
0.5
mV/mA
Base Drive
l
10
15
20
mA
Current Limit Threshold
l
47
60
70
mV
Short-Circuit Current Limit Threshold
VFB = 0
22
26
30
mV
Minimum BIAS to DRV Voltage (Note 7)
IDRV = 10mA
l
0.3
0.9
V
Minimum VIN to DRV Voltage
IDRV = 10mA
l
2.0
2.3
V
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: The LT3694E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3694I is guaranteed to meet performance specifications from –40°C to
125°C junction temperature.
Note 3: Current limit is guaranteed by design and/or correlation to static
test. Slope compensation reduces current limit at higher duty cycles.
Note 4: This is the minimum voltage across the boost capacitor needed to
guarantee full saturation of the internal power switch.
Note 5: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions.
Junction temperature will exceed the maximum operating range when
overtemperature protection is active. Continuous operation above the
specified maximum operating junction temperature may impair
device reliability.
Note 6: Absolute Maximum Voltage at VIN and EN/UVLO pins is 70V for
non-repetitive, 1 second transients and 36V for continuous operation.
Note 7: The LDO will function if the BIAS to DRV differential is not met,
but the base drive current will be drawn from VIN instead of BIAS.
Note 8: The PGOOD pin will pull low when the voltage on any of the three
FB pins is lower than the PGOOD threshold value.
Note 9: Positive currents flow into pins, negative currents flow out of pins.
Minimum and maximum values refer to absolute values.
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