LT3013B Datasheet, PDF (1/16 Pages) Linear Technology – 250mA, 4V to 80V Low Dropout Micropower Linear Regulator with PWRGD

LT3013B
250mA, 4V to 80V
Low Dropout Micropower
Linear Regulator with PWRGD
FEATURES
■ _{Wide Input Voltage Range: 4V to 80V}
■ _{Low Quiescent Current: 65µA}
■ _{Low Dropout Voltage: 400mV}
■ _{Output Current: 250mA}
■ _{No Protection Diodes Needed}
■ _{Adjustable Output from 1.24V to 60V}
■ _{Stable with 3.3µF Output Capacitor}
■ _{Stable with Aluminum, Tantalum or Ceramic}
Capacitors
■ _{Reverse-Battery Protection}
■ _{No Reverse Current Flow from Output to Input}
■ _{Thermal Limiting}
■ _{Thermally Enhanced 16-Lead TSSOP and 12 Pin}
(4mm × 3mm) DFN Package
U
APPLICATIO S
■ _{Low Current High Voltage Regulators}
■ _{Regulator for Battery-Powered Systems}
■ _{Telecom Applications}
■ _{Automotive Applications}
DESCRIPTIO
The LT^®3013B 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. De-
signed for use in battery-powered or high voltage sys-
tems, the low quiescent current (65µA operating) makes
the LT3013B an ideal choice. Quiescent current is also well
controlled in dropout.
Other features of the LT3013B include a PWRGD flag to
indicate output regulation. The delay between regulated
output level and flag indication is programmable with a
single capacitor. The LT3013B 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 regula-
tors. 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 LT3013B regulator is avail-
able 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 APPLICATIO
V_IN
5.4V TO
80V
5V Supply
IN
OUT
1µF ^1.6M
LT3013B
750k
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
50 100 150 200 250
OUTPUT CURRENT (mA)
3013 TA02
3013bfa
1