LT3013B
250mA, 4V to 80V
Low Dropout Micropower
Linear Regulator with PWRGD
FEATURES
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DESCRIPTION
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 systems,
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
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 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.
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
APPLICATIONS
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Low Current High Voltage Regulators
Regulator for Battery-Powered Systems
Telecom Applications
Automotive Applications
L,
LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATION
400
Dropout Voltage
350
V
OUT
5V
250mA
3.3μF
DROPOUT VOLTAGE (mV)
300
250
200
150
100
50
0
0
50
100
150
200
OUTPUT CURRENT (mA)
250
3013 TA02
5V Supply
IN
V
IN
5.4V TO
80V
1μF
1.6M
PWRGD
GND
ADJ
C
T
249k
3013 TA01
OUT
LT3013B
750k
1000pF
3013bfb
1
LT3013B
ABSOLUTE MAXIMUM RATINGS
(Note 1)
IN Pin Voltage ........................................................ ±80V
OUT Pin Voltage ..................................................... ±60V
IN to OUT Differential Voltage ................................ ±80V
ADJ Pin Voltage ....................................................... ±7V
C
T
Pin Voltage ................................................. 7V, –0.5V
PWRGD Pin Voltage ...................................... 80V, –0.5V
Output Short-Circuit Duration ......................... Indefinite
Storage Temperature Range
TSSOP Package ................................ –65°C to 150°C
DFN Package..................................... –65°C to 125°C
Operating Junction Temperature Range
(Notes 3, 9, 10) ..................................... –40°C to 125°C
Lead Temperature (Soldering, 10 sec)
TSSOP Only ..................................................... 300°C
PIN CONFIGURATION
TOP VIEW
TOP VIEW
NC
OUT
OUT
ADJ
GND
PWRGD
1
2
3
4
5
6
13
12 NC
11 IN
10 IN
9
8
7
NC
NC
C
T
GND
NC
OUT
OUT
ADJ
GND
PWRGD
GND
DE PACKAGE
12-LEAD (4mm 3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 40°C/W,
θ
JC
= 16°C/W
EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB
1
2
3
4
5
6
7
8
17
16 GND
15 NC
14 IN
13 IN
12 NC
11 NC
10 C
T
9
GND
FE PACKAGE
16-LEAD PLASTIC TSSOP
T
JMAX
= 125°C,
θ
JA
= 40°C/W,
θ
JC
= 16°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION
LEAD FREE FINISH
LT3013BEDE#PBF
LT3013BEFE#PBF
LEAD BASED FINISH
LT3013BEDE
LT3013BEFE
TAPE AND REEL
LT3013BEDE#TRPBF
LT3013BEFE#TRPBF
TAPE AND REEL
LT3013BEDE#TR
LT3013BEFE#TR
PART MARKING
3013B
3013BEFE
PART MARKING
3013B
3013BEFE
PACKAGE DESCRIPTION
12-Lead (4mm
×
3mm) Plastic DFN
16-Lead Plastic TSSOP
PACKAGE DESCRIPTION
12-Lead (4mm
×
3mm) Plastic DFN
16-Lead Plastic TSSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
3013bfb
2
LT3013B
ELECTRICAL CHARACTERISTICS
The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
J
= 25°C.
PARAMETER
Minimum Input Voltage
ADJ Pin Voltage (Notes 2, 3)
Line Regulation
Load Regulation (Note 2)
Dropout Voltage
V
IN
= V
OUT(NOMINAL)
(Notes 4, 5)
CONDITIONS
I
LOAD
= 250mA
V
IN
= 4V, I
LOAD
= 1mA
4.5V < V
IN
< 80V, 1mA < I
LOAD
< 250mA
ΔV
IN
= 4V to 80V, I
LOAD
= 1mA (Note 2)
V
IN
= 4.5V,
ΔI
LOAD
= 1mA to 250mA
V
IN
= 4.5V,
ΔI
LOAD
= 1mA to 250mA
I
LOAD
= 10mA
I
LOAD
= 10mA
I
LOAD
= 50mA
I
LOAD
= 50mA
I
LOAD
= 250mA
I
LOAD
= 250mA
GND Pin Current
V
IN
= 4.5V
(Notes 4, 6)
Output Voltage Noise
ADJ Pin Bias Current
PWRGD Trip Point
PWRGD Trip Point Hysteresis
PWRGD Output Low Voltage
C
T
Pin Charging Current
C
T
Pin Voltage Differential
Ripple Rejection
Current Limit
Reverse Output Current (Note 8)
V
CT(PWRGD High)
– V
CT(PWRGD Low)
V
IN
= 7V(Avg), V
RIPPLE
= 0.5V
P-P
, f
RIPPLE
= 120Hz, I
LOAD
= 250mA
V
IN
= 7V, V
OUT
= 0V
V
IN
= 4.5V,
ΔV
OUT
= –0.1V (Note 2)
V
OUT
= 1.24V, V
IN
< 1.24V (Note 2)
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l
l
l
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MIN
1.225
1.2
TYP
4
1.24
1.24
0.1
7
160
250
400
65
3
10
100
30
MAX
4.5
1.255
1.28
5
12
25
230
300
340
420
490
620
120
18
100
94
250
6
UNITS
V
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mV
μA
mA
mA
μV
RMS
nA
%
%
mV
μA
V
dB
mA
mA
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l
l
l
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I
LOAD
= 0mA
I
LOAD
= 100mA
I
LOAD
= 250mA
C
OUT
= 10μF I
LOAD
= 250mA, BW = 10Hz to 100kHz
,
(Note 7)
% of Nominal Output Voltage, Output Rising
% of Nominal Output Voltage
I
PWRGD
= 50μA
l
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85
90
1.1
140
3.6
1.6
65
270
75
400
12
25
μA
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:
The LT3013B is tested and specified for these conditions with the
ADJ pin connected to the OUT pin.
Note 3:
Operating conditions are limited by maximum junction
temperature. The regulated output voltage specification will not apply
for all possible combinations of input voltage and output current. When
operating at maximum input voltage, the output current range must be
limited. When operating at maximum output current, the input voltage
range must be limited.
Note 4:
To satisfy requirements for minimum input voltage, the LT3013B is
tested and specified for these conditions with an external resistor divider
(249k bottom, 549k top) for an output voltage of 4V. The external resistor
divider will add a 5μA DC load on the output.
Note 5:
Dropout voltage is the minimum input to output voltage differential
needed to maintain regulation at a specified output current. In dropout, the
output voltage will be equal to (V
IN
– V
DROPOUT
).
Note 6:
GND pin current is tested with V
IN
= 4.5V and a current source
load. This means the device is tested while operating close to its dropout
region. This is the worst-case GND pin current. The GND pin current will
decrease slightly at higher input voltages.
Note 7:
ADJ pin bias current flows into the ADJ pin.
Note 8:
Reverse output current is tested with the IN pin grounded and the
OUT pin forced to the rated output voltage. This current flows into the OUT
pin and out the GND pin.
Note 9:
The LT3013BE is guaranteed to meet performance specifications
from 0°C to 125°C operating junction temperature. Specifications over
the –40°C to 125°C operating junction temperature range are assured by
design, characterization and correlation with statistical process controls.
Note 10:
This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
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LT3013B
TYPICAL PERFORMANCE CHARACTERISTICS
Typical Dropout Voltage
600
GUARANTEED DROPOUT VOLTAGE (mV)
500
DROPOUT VOLTAGE (mV)
400
300
200
100
0
T
J
= 25°C
T
J
= 125°C
600
500
DROPOUT VOLTAGE (mV)
400
300
200
100
0
0
50
100
150
200
OUTPUT CURRENT (mA)
250
3013 G01
Guaranteed Dropout Voltage
= TEST POINTS
600
T
J
≤ 125°C
500
400
300
Dropout Voltage
I
L
= 250mA
T
J
≤ 25°C
I
L
= 100mA
I
L
= 50mA
200
I
L
= 10mA
100
0
–50
I
L
= 1mA
–25
50
25
0
75
TEMPERATURE (°C)
100
125
0
50
150
100
200
OUTPUT CURRENT (mA)
250
3013 G02
3013 G03
Quiescent Current
120
V
IN
= 6V
R
L
= ∞
100 I
L
= 0
QUIESCENT CURRENT (μA)
80
60
40
20
0
–50 –25
ADJ PIN VOLTAGE (V)
1.260
1.255
1.250
1.245
1.240
1.235
1.230
1.225
0
25 50 75 100 125 150
TEMPERATURE (°C)
3013 G04
ADJ Pin Voltage
I
L
= 1mA
QUIESCENT CURRENT (μA)
80
70
60
50
40
30
20
10
0
75
50
25
TEMPERATURE (°C)
100
125
0
Quiescent Current
T
J
= 25°C
R
L
=
∞
1.220
–50 –25
0
1
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
10
3013 G05
3013 G06
Quiescent Current
250
T
J
= 25°C
225 R
L
=
∞
V
OUT
= 1.24V
200
175
150
125
100
75
50
25
0
0
10
20
30 40 50 60
INPUT VOLTAGE (V)
70
80
0
1.2
1.0
GND PIN CURRENT (mA)
0.8
0.6
0.4
0.2
GND Pin Current
T
J
= 25°C
*FOR V
OUT
= 1.24V
GND PIN CURRENT (mA)
R
L
= 49.6Ω
I
L
= 25mA*
R
L
= 124Ω
I
L
= 10mA*
10
9
8
7
6
5
4
3
2
1
0
1
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
10
0
GND Pin Current
T
J
= 25°C, *FOR V
OUT
= 1.24V
QUIESCENT CURRENT (μA)
R
L
= 4.96Ω
I
L
= 250mA*
R
L
= 12.4Ω
I
L
= 100mA*
R
L
= 1.24k
I
L
= 1mA*
R
L
= 24.8Ω, I
L
= 50mA*
0
1
2
3 4 5 6 7
INPUT VOLTAGE (V)
8
9
10
3013 G06b
3013 G07
3013 G08
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LT3013B
TYPICAL PERFORMANCE CHARACTERISTICS
GND Pin Current vs I
LOAD
10
V
IN
= 4.5V
9 T
J
= 25°C
ADJ PIN BIAS CURRENT (nA)
8
7
6
5
4
3
2
1
0
0
50
100
150
200
LOAD CURRENT (mA)
250
3013 G09
ADJ Pin Bias Current
45
40
35
30
25
20
15
10
5
0
–50 –25
0
75
50
25
TEMPERATURE (°C)
100
125
PWRGD TRIP POINT (% OF OUTPUT VOLTAGE)
50
95
94
93
92
91
90
89
88
87
86
PWRGD Trip Point
GND PIN CURRENT (mA)
OUTPUT RISING
OUTPUT FALLING
85
–50 –25
0
75
50
25
TEMPERATURE (°C)
100
125
3013 G13
3013 G25
PWRGD Output Low Voltage
200
PWRGD OUTPUT LOW VOLTAGE (mV)
180
160
140
120
100
80
60
40
20
0
–50 –25
0
50
75
25
TEMPERATURE (°C)
100
125
CT CHARGING CURRENT (μA)
I
PWRGD
= 50μA
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
C
T
Charging Current
PWRGD TRIPPED HIGH
CT COMPARATOR THRESHOLDS (V)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
C
T
Comparator Thresholds
V
CT
(HIGH)
V
CT
(LOW)
0
50
75
25
TEMPERATURE (°C)
100
125
0
–50 –25
0
50
75
25
TEMPERATURE (°C)
100
125
0
–50 –25
3013 G26
3013 G27
3013 G28
Current Limit
1.0
0.9
0.8
CURRENT LIMIT (A)
CURRENT LIMIT (A)
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
10
20
30 40 50 60
INPUT VOLTAGE (V)
70
80
0.1
T
J
= 125°C
T
J
= 25°C
0.5
0.4
0.3
0.2
V
OUT
= 0V
0.7
0.6
Current Limit
200
REVERSE OUTPUT CURRENT (μA)
Reverse Output Current
T
J
= 25°C
180 V
IN
= 0V
V
OUT
= V
ADJ
160
140
120
100
80
60
40
20
CURRENT FLOWS
INTO OUTPUT PIN
ADJ
PIN CLAMP
(SEE APPLICATIONS
INFORMATION)
0
–50
V
IN
= 7V
V
OUT
= 0V
–25
50
25
0
75
TEMPERATURE (°C)
100
125
0
0
1
2
3 4 5 6 7 8
OUTPUT VOLTAGE (V)
9
10
3013 G14
3013 G15
3013 G16
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