LT3010/LT3010-5
50mA, 3V to 80V
Low Dropout
Micropower Linear Regulator
FEATURES
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DESCRIPTIO
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Wide Input Voltage Range: 3V to 80V
Low Quiescent Current: 30碌A(chǔ)
Low Dropout Voltage: 300mV
Output Current: 50mA
Thermally Enhanced 8-Lead MSOP Package
No Protection Diodes Needed
Fixed Output Voltage: 5V (LT3010-5)
Adjustable Output from 1.275V to 60V (LT3010)
1碌A(chǔ) Quiescent Current in Shutdown
Stable with 1碌F Output Capacitor
Stable with Aluminum, Tantalum or Ceramic
Capacitors
Reverse-Battery Protection
No Reverse Current Flow from Output
Thermal Limiting
The LT
廬
3010 is a high voltage, micropower low dropout
linear regulator. The device is capable of supplying 50mA
output current with a dropout voltage of 300mV. Designed
for use in battery-powered or high voltage systems, the
low quiescent current (30碌A(chǔ) operating and 1碌A(chǔ) in shut-
down) makes the LT3010 an ideal choice. Quiescent
current is also well controlled in dropout.
Other features of the LT3010 include the ability to operate
with very small output capacitors. The regulators are
stable with only 1碌F on the output while most older
devices require between 10碌F and 100碌F for stability.
Small ceramic capacitors can be used without the neces-
sary addition of ESR as is common with other regulators.
Internal protection circuitry includes reverse-battery pro-
tection, current limiting, thermal limiting and reverse
current protection.
The device is available in a fixed output voltage of 5V and
as an adjustable device with a 1.275V reference voltage.
The LT3010 regulator is available in the 8-lead MSOP
package with an exposed pad for enhanced thermal han-
dling capability.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
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Low Current High Voltage Regulators
Regulator for Battery-Powered Systems
Telecom Applications
Automotive Applications
TYPICAL APPLICATIO
350
5V Supply with Shutdown
IN
V
IN
5.4V TO
80V
1碌F
SHDN SENSE
GND
3010 TA01
300
OUT
LT3010-5
V
OUT
5V
50mA
1碌F
DROPOUT VOLTAGE (mV)
250
200
150
100
50
0
0
10
20
30
40
50
3010 TA02
V
SHDN
(PIN 5) OUTPUT
<0.3V
OFF
>2.0V
ON
NC
ON
U
Dropout Voltage
OUTPUT CURRENT (mA)
3010f
U
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1