Linear Technology DC1075A - Clock Divider board DC1075A DC1075A 数据表
产品代码
DC1075A
1
LT1962 Series
300mA, Low Noise,
Micropower
LDO Regulators
■
Low Noise: 20
µ
V
RMS
(10Hz to 100kHz)
■
Output Current: 300mA
■
Low Quiescent Current: 30
µ
A
■
Wide Input Voltage Range: 1.8V to 20V
■
Low Dropout Voltage: 270mV
■
Very Low Shutdown Current: < 1
µ
A
■
No Protection Diodes Needed
■
Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V
■
Adjustable Output from 1.22V to 20V
■
Stable with 3.3
µ
F Output Capacitor
■
Stable with Aluminum, Tantalum or
Ceramic Capacitors
Ceramic Capacitors
■
Reverse Battery Protection
■
No Reverse Current
■
Overcurrent and Overtemperature Protected
■
8-Lead MSOP Package
The LT
®
1962 series are micropower, low noise, low
dropout regulators. The devices are capable of supplying
300mA of output current with a dropout voltage of 270mV.
Designed for use in battery-powered systems, the low
30
300mA of output current with a dropout voltage of 270mV.
Designed for use in battery-powered systems, the low
30
µ
A quiescent current makes them an ideal choice.
Quiescent current is well controlled; it does not rise in
dropout as it does with many other regulators.
dropout as it does with many other regulators.
A key feature of the LT1962 regulators is low output noise.
With the addition of an external 0.01
With the addition of an external 0.01
µ
F bypass capacitor,
output noise drops to 20
µ
V
RMS
over a 10Hz to 100kHz
bandwidth. The LT1962 regulators are stable with output
capacitors as low as 3.3
capacitors as low as 3.3
µ
F. Small ceramic capacitors can
be used without the series resistance required by other
regulators.
regulators.
Internal protection circuitry includes reverse battery pro-
tection, current limiting, thermal limiting and reverse cur-
rent protection. The parts come in fixed output voltages of
1.5V, 1.8V, 2.5V, 3V, 3.3V and 5V, and as an adjustable
device with a 1.22V reference voltage. The LT1962 regu-
lators are available in the 8-lead MSOP package.
tection, current limiting, thermal limiting and reverse cur-
rent protection. The parts come in fixed output voltages of
1.5V, 1.8V, 2.5V, 3V, 3.3V and 5V, and as an adjustable
device with a 1.22V reference voltage. The LT1962 regu-
lators are available in the 8-lead MSOP package.
3.3V Low Noise Regulator
■
Cellular Phones
■
Battery-Powered Systems
■
Noise-Sensitive Instrumentation Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
LOAD CURRENT (mA)
0
DROPOUT VOLTAGE (mV)
400
350
300
250
200
150
100
50
0
1962 TA02
100
200
300
50
150
250
Dropout Voltage
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
IN
SHDN
0.01
µ
F
10
µ
F
1962 TA01
OUT
SENSE
V
IN
3.7V TO
20V
BYP
GND
LT1962-3.3
3.3V AT 300mA
20
20
µ
V
RMS
NOISE
1
µ
F
+