LT3013_09 Datasheet, PDF (1/20 Pages) Linear Technology – 250mA, 4V to 80V Low Dropout Micropower Linear Regulator with PWRGD

FEATURES
n _{Wide Input Voltage Range: 4V to 80V}
n _{Low Quiescent Current: 65μA}
n _{Low Dropout Voltage: 400mV}
n _{Output Current: 250mA}
n _{No Protection Diodes Needed}
n _{Adjustable Output from 1.24V to 60V}
n _{1μA Quiescent Current in Shutdown}
n _{Stable with 3.3μF Output Capacitor}
n _{Stable with Aluminum, Tantalum or Ceramic}
Capacitors
n _{Reverse-Battery Protection}
n _{No Reverse Current Flow from Output to Input}
n _{Thermal Limiting}
n _{Thermally Enhanced 16-Lead TSSOP and}
12-Pin (4mm × 3mm) DFN Package
APPLICATIONS
n _{Low Current High Voltage Regulators}
n _{Regulator for Battery-Powered Systems}
n _{Telecom Applications}
n _{Automotive Applications}
LT3013
250mA, 4V to 80V
Low Dropout Micropower
Linear Regulator with PWRGD
DESCRIPTION
The LT^®3013 is a high voltage, micropower low dropout
linear regulator. The device is capable of supplying 250mA
of output current with a dropout voltage of 400mV. Designed
for use in battery-powered or high voltage systems, the low
quiescent current (65μA operating and 1μA in shutdown)
makes the LT3013 an ideal choice. Quiescent current is
also well controlled in dropout.
Other features of the LT3013 include a PWRGD flag to
indicate output regulation. The delay between regulated
output level and flag indication is programmable with
a single capacitor. The LT3013 also has the ability to
operate with very small output capacitors. The regulator
is stable with only 3.3μF on the output while most older
devices require between 10μF and 100μF for stability.
Small ceramic capacitors can be used without any need
for series resistance (ESR) as is common with other
regulators. Internal protection circuitry includes reverse-
battery protection, current limiting, thermal limiting and
reverse current protection.
The device is available with an adjustable output with a
1.24V reference voltage. The LT3013 regulator is available
in the thermally enhanced 16-lead TSSOP and the low
profile (0.75mm), 12-pin (4mm × 3mm) DFN package,
both providing excellent thermal characteristics.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
5V Supply with Shutdown
V_IN
5.4V TO
80V
1μF ^1.6M
V_SHDN
<0.3V
>2.0V
OUTPUT
OFF
ON
IN
OUT
LT3013
750k
SHDN _ADJ
PWRGD
GND C_T
249k
V_OUT
5V
250mA
3.3μF
1000pF
3013 TA01
400
350
300
250
200
150
100
50
0
0
Dropout Voltage
50 100 150 200
OUTPUT CURRENT (mA)
250
3013 TA02
3013fe
1