参数资料
型号: LT1965EMS8E-2.5#TRPBF
厂商: Linear Technology
文件页数: 5/22页
文件大小: 0K
描述: IC REG LDO 2.5V 1.1A 8-MSOP
产品培训模块: More Information on LDOs
标准包装: 2,500
稳压器拓扑结构: 正,固定式
输出电压: 2.5V
输入电压: 最高 20V
电压 - 压降(标准): 0.31V @ 1.1A
稳压器数量: 1
电流 - 输出: 1.1A
电流 - 限制(最小): 1.2A
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)裸露焊盘
供应商设备封装: 8-MSOP-EP
包装: 带卷 (TR)
LT1965 Series
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T A = 25°C. (Note 3)
PARAMETER
SHDN Pin Current (Note 10)
Quiescent Current in Shutdown
Ripple Rejection
CONDITIONS
V SHDN = 0V
V SHDN = 20V
V IN = 6V, V SHDN = 0V
V IN – V OUT = 1.5V (AVG), V RIPPLE = 0.5V P-P ,
f RIPPLE = 120Hz, I LOAD = 0.75A
MIN
57
TYP
0.01
5.5
0.01
75
MAX
1
10
1
UNITS
μA
μA
μA
dB
Current Limit
Input Reverse-Leakage Current
V IN = 7V, V OUT = 0
V IN = V OUT(NOMINAL) + 1V, ?V OUT = –0.1V (T J < 125°C) (Note 6)
V IN = V OUT(NOMINAL) + 1V, ?V OUT = –0.1V, (H-Grade, T J > 125°C) (Note 6)
V IN = –20V, V OUT = 0
l
1.2
1.1
2.4
1
A
A
A
mA
Reverse-Output Current (Note 11) LT1965-1.5, V OUT = 1.5V, V IN = 0
LT1965-1.8, V OUT = 1.8V, V IN = 0
LT1965-2.5, V OUT = 2.5V, V IN = 0
LT1965-3.3, V OUT = 3.3V, V IN = 0
LT1965 (Note 4), V OUT = 1.2V, V IN = 0
275
275
275
275
175
525
525
525
525
400
μA
μA
μA
μA
μA
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: Absolute maximum input to output differential voltage is not
achievable with all combinations of rated IN pin and OUT pin voltages.
With the IN pin at 22V, the OUT pin may not be pulled below 0V. The total
measured voltage from IN to OUT must not exceed ±22V.
Note 3: The LT1965 regulators are tested and specified under pulse
load conditions such that T J @ T A . The LT1965E regulators are 100%
tested at T A = 25°C and performance is guaranteed from 0°C to 125°C.
Performance of the LT1965E over the full –40°C to 125°C operating
junction temperature range is assured by design, characterization and
correlation with statistical process controls. The LT1965I regulators are
guaranteed over the full –40°C to 125°C operating junction temperature
range. The LT1965H is tested at 150°C operating junction temperature.
High junction temperatures degrade operating lifetimes. Operating lifetime
is derated at junction temperatures greater than 125°C.
Note 4: The LT1965 adjustable version is tested and specified for these
conditions with the ADJ connected to the OUT pin.
Note 5: Maximum junction temperature limits operating conditions. The
regulated output voltage specification does not apply for all possible
combinations of input voltage and output current. Limit the output current
range if operating at the maximum input voltage. Limit the input-to-output
voltage differential if operating at the maximum output current.
Note 6: To satisfy minimum input voltage requirements, the LT1965
adjustable version is tested and specified for these conditions with an
external resistor divider (bottom 4.02k, top 4.32k) for an output voltage of
2.5V. The external resistor divider adds 300μA of output DC load current.
This external current is not factored into GND pin current.
Note 7: Dropout voltage is the minimum input-to-output voltage
differential needed to maintain regulation at a specified output current. In
dropout, the output voltage equals: (V IN – V DROPOUT )
Note 8: GND pin current is tested with V IN = V OUT(NOMINAL) + 1V and a
current source load. GND pin current increases slightly in dropout. For
the fixed output versions, an internal resistor divider will typically add
100μA to the GND pin current. See GND pin current curves in the Typical
Performance Characteristics section.
Note 9: ADJ pin bias current flows into the ADJ pin.
Note 10: SHDN pin current flows into the SHDN pin.
Note 11: Reverse-output current is tested with the IN pin grounded and
the OUT pin forced to the rated output voltage. This current flows into the
OUT pin and out of the GND pin.
Note 12: For the LT1965, LT1965-1.5 and LT1965-1.8, the minimum input
voltage specification limits the dropout voltage under some output voltage/
load conditions.
Note 13: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C (LT1965E, LT1965I) or 150°C (LT1965H)
when overtemperature is active. Continuous operation above the specified
maximum operating junction temperature may impair device reliability.
5
For more information www.linear.com/LT1965
1965fb
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