參數(shù)資料
型號(hào)： LCXW
廠(chǎng)商： Linear Technology Corporation
英文描述： 1.1A, Low Noise, Low Dropout Linear Regulator
中文描述： 1.1A的，低噪聲，低壓差線(xiàn)性穩(wěn)壓器
文件頁(yè)數(shù)： 3/16頁(yè)
文件大?。?/td> 213K
代理商： LCXW
LT1965
3
1965f
ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
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 is tested and specified under pulse load conditions
such that T
J
T
A
. The LT1965E is 100% tested at T
A
= 25°C. Performance
at –40°C and 125°C is assured by design, characterization, and correlation
with statistical process controls. The LT1965I is guaranteed over the full
–40°C to 125°C operating junction temperature range.
Note 4:
The LT1965 is tested and specified for these conditions with the
ADJ connected to the OUT pin.
PARAMETER
Minimum Input Voltage (Notes 4, 12)
CONDITIONS
I
LOAD
= 0.5A
I
LOAD
= 1.1A
V
IN
= 2.1V, I
LOAD
= 1mA
2.3V < V
IN
< 20V, 1mA < I
LOAD
< 1.1A
Δ
V
IN
= 2.1V to 20V, I
LOAD
= 1mA
V
IN
= 2.3V,
Δ
I
LOAD
= 1mA to 1.1A
V
IN
= 2.3V,
Δ
I
LOAD
= 1mA to 1.1A
I
LOAD
= 1mA
I
LOAD
= 1mA
I
LOAD
= 100mA
I
LOAD
= 100mA
I
LOAD
= 500mA
I
LOAD
= 500mA
I
LOAD
= 1.1A
I
LOAD
= 1.1A
I
LOAD
= 0mA
I
LOAD
= 1mA
I
LOAD
= 100mA
I
LOAD
= 500mA
I
LOAD
= 1.1A
C
OUT
= 10μF, I
LOAD
= 1.1A, BW = 10Hz to 100kHz
MIN
TYP
1.65
1.8
1.20
1.20
3
4.25
MAX
UNITS
●
2.3
1.218
1.236
8
8
16
0.08
0.14
0.175
0.28
0.25
0.36
0.36
0.49
1.1
1.5
5.5
20
40
V
V
V
V
ADJ Pin Voltage (Notes 4, 5)
●
1.182
1.164
Line Regulation (Note 4)
Load Regulation
●
mV
mV
mV
●
Dropout Voltage
V
IN
= V
OUT(NOMINAL)
(Notes 6, 7, 12)
●
0.05
V
V
V
V
V
V
V
V
●
0.10
●
0.19
●
0.29
GND Pin Current
V
IN
= V
OUT(NOMINAL)
+ 1V
(Notes 6, 8)
●
●
●
●
●
0.5
0.6
2.2
8.2
21
40
1.3
0.85
0.45
0.01
5.5
0.01
75
mA
mA
mA
mA
mA
Output Voltage Noise
ADJ Pin Bias Current (Notes 4, 9)
Shutdown Threshold
μV
RMS
4.5
2
μA
V
V
μA
μA
μA
dB
V
OUT
= Off to On
V
OUT
= On to Off
V
S
H
D
N
= 0V
V
S
H
D
N
= 20V
V
IN
= 6V, V
S
H
D
N
= 0V
V
IN
– V
OUT
= 1.5V (AVG), V
RIPPLE
= 0.5V
P-P
,
f
RIPPLE
= 120Hz, I
LOAD
= 0.75A
V
IN
= 7V, V
OUT
= 0
V
IN
= V
OUT(NOMINAL)
+ 1V,
Δ
V
OUT
= -0.1V (Note 6)
V
IN
= –20V, V
OUT
= 0
V
OUT
= 1.2V, V
IN
< 1.2V (Note 4)
●
●
0.2
S
H
D
N Pin Current (Note 10)
1
10
1
Quiescent Current in Shutdown
Ripple Rejection
57
Current Limit
●
1.2
2
A
A
Input Reverse Leakage Current
Reverse Output Current (Note 11)
1
mA
μA
175
400
The
●
denotes the specifications which apply over the full operating
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 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.
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. See
GND pin current curves in the Typical Performance Characteristics section.
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