EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB GND
T
JMAX
= 125°C (LT3029E/LT3029I/LT3029MP),
θ
JA
= 37°C/W,
θ
JC
: 5°C/W TO 10°C/W
T
JMAX
= 150°C (LT3029H),
θ
JA
= 37°C/W,
θ
JC
: 5°C/W TO 10°C/W
EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB GND
orDer inForMaTion
LEAD FREE FINISH
LT3029EDE#PBF
LT3029IDE#PBF
LT3029HDE#PBF
LT3029EMSE#PBF
LT3029IMSE#PBF
LT3029HMSE#PBF
LT3029MPMSE#PBF
LEAD BASED FINISH
LT3029EDE
LT3029IDE
LT3029HDE
LT3029EMSE
LT3029IMSE
LT3029HMSE
LT3029MPMSE
TAPE AND REEL
LT3029EDE#TRPBF
LT3029IDE#TRPBF
LT3029HDE#TRPBF
LT3029EMSE#TRPBF
LT3029IMSE#TRPBF
LT3029HMSE#TRPBF
LT3029MPMSE#TRPBF
TAPE AND REEL
LT3029EDE#TR
LT3029IDE#TR
LT3029HDE#TR
LT3029EMSE#TR
LT3029IMSE#TR
LT3029HMSE#TR
LT3029MPMSE#TR
PART MARKING*
3029
3029
3029
3029
3029
3029
3029
PART MARKING*
3029
3029
3029
3029
3029
3029
3029
PACKAGE DESCRIPTION
16-Lead (4mm
×
3mm) Plastic DFN
16-Lead (4mm
×
3mm) Plastic DFN
16-Lead (4mm
×
3mm) Plastic DFN
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
PACKAGE DESCRIPTION
16-Lead (4mm
×
3mm) Plastic DFN
16-Lead (4mm
×
3mm) Plastic DFN
16-Lead (4mm
×
3mm) Plastic DFN
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
16-Lead Plastic MSOP
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–55°C to 125°C
TEMPERATURE RANGE
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–40°C to 125°C
–40°C to 125°C
–40°C to 150°C
–55°C to 125°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
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/
3029fb
2
For more information
www.linear.com/LT3029
LT3029
elecTrical characTerisTics
PARAMETER
Minimum Input Voltage (Notes 3, 11)
ADJ1, ADJ2 Pin Voltage (Notes 3, 4, 9)
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 2)
CONDITIONS
I
LOAD
= 500mA
V
IN
= 2V, I
LOAD
= 1mA
2.3V < V
IN
< 20V, 1mA < I
LOAD
< 500mA (E, I, MP)
2.3V < V
IN
< 20V, 1mA < I
LOAD
< 500mA (H)
∆V
IN
= 2V to 20V, I
LOAD
= 1mA
V
IN
= 2.3V, ∆I
LOAD
= 1mA to 500mA
V
IN
= 2.3V, ∆I
LOAD
= 1mA to 500mA (E, I, MP)
V
IN
= 2.3V, ∆I
LOAD
= 1mA to 500mA (H)
I
LOAD
= 10mA
I
LOAD
= 10mA
I
LOAD
= 50mA
I
LOAD
= 50mA
I
LOAD
= 100mA
I
LOAD
= 100mA
I
LOAD
= 500mA
I
LOAD
= 500mA
l
l
l
l
l
l
MIN
1.203
1.191
1.173
TYP
1.8
1.215
1.215
1.215
0.5
2.5
MAX
2.3
1.227
1.239
1.239
5
6
15
32
0.18
0.25
0.22
0.31
0.25
0.34
0.36
0.46
150
250
2
3.5
8
16
UNITS
V
V
V
V
mV
mV
mV
mV
V
V
V
V
V
V
V
V
µA
µA
mA
mA
mA
mA
µV
RMS
Line Regulation (Note 3)
Load Regulation (Note 3)
Dropout Voltage
V
IN
= V
OUT(NOMINAL)
(Notes 5, 6, 11)
0.11
l
0.16
l
0.2
l
0.3
l
l
l
l
l
l
l
GND Pin Current (per Channel)
V
IN
= V
OUT(NOMINAL)
(Notes 5, 7)
I
LOAD
= 0mA
I
LOAD
= 1mA
I
LOAD
= 50mA
I
LOAD
= 100mA
I
LOAD
= 250mA
I
LOAD
= 500mA
,
,
C
OUT
= 10µF C
BYP
= 10nF I
LOAD
= 500mA,
BW = 10Hz to 100kHz
ADJ1, ADJ2 (Notes 3, 8)
V
OUT
= Off to On
V
OUT
= On to Off
V
SHDN1
, V
SHDN2
= 0V
V
SHDN1
, V
SHDN2
= 20V
V
IN
= 6V, V
SHDN1
= 0V, V
SHDN2
= 0V
V
IN
= 2.715V (Avg), V
RIPPLE
= 0.5V
P-P
,
f
RIPPLE
= 120Hz, I
LOAD
= 500mA
V
IN
= 7V, V
OUT
= 0V
V
IN
= 2.3V, ∆V
OUT
= –0.1V
V
IN
= –20V, V
OUT
= 0V
V
OUT
= 1.215V, V
IN
= 0V
55
90
1.1
2
4.3
10
20
30
Output Voltage Noise
ADJ1/ADJ2 Pin Bias Current
Shutdown Threshold
SHDN1/SHDN2
Pin Current (Note 10)
Quiescent Current in Shutdown (per Channel)
Ripple Rejection
Current Limit (Note 9)
Input Reverse Leakage Current
Reverse Output Current
100
1.1
0.5
3
0.1
nA
V
V
µA
µA
µA
dB
A
mA
l
l
l
l
0.20
0.45
0.40
0
0.6
0.01
55
67
1.5
1
0.5
10
l
l
520
mA
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 LT3029 is tested and specified under pulse load conditions
such that T
J
≈ T
A
. The LT3029E is 100% tested at T
A
= 25°C. Performance
of the LT3029E over the full –40°C to 125°C operating junction
temperature range is assured by design, characterization and correlation
with statistical process controls. The LT3029I is guaranteed over the full
–40°C to 125°C operating junction temperature range. The LT3029MP is
100% tested and guaranteed over the –55°C to 125°C operating junction
temperature range. The LT3029H is tested at 150°C operating junction
temperature. High junction temperatures degrade operating lifetimes.
Operating lifetime is derated at junction temperatures greater than 125°C.
Note 3:
The LT3029 is tested and specified for these conditions with the
ADJ1/ADJ2 pin connected to the corresponding OUT1/OUT2 pin.
Note 4:
Maximum junction temperature limits operating conditions. The
regulated output voltage specification does not apply for all possible
combinations of input voltage and output current. When operating at
maximum input voltage, limit the output current range. When operating at
maximum output current, limit the input voltage range.
Note 5:
To satisfy minimum input voltage requirements, the LT3029 is
tested and specified for these conditions with an external resistor divider
(two 243k resistors) for an output voltage of 2.437V. The external resistor
divider adds 5µA of DC load on the output.
Note 6:
Dropout voltage is the minimum input to output voltage differential
needed to maintain regulation at a specified output current. In dropout, the
output voltage equals: V
IN
– V
DROPOUT
.
3029fb
For more information
www.linear.com/LT3029
3
LT3029
elecTrical characTerisTics
Note 7:
GND pin current is tested with V
IN
= 2.437V and a current source
load. This means the device is tested while operating in its dropout region
or at the minimum input voltage specification. This is the worst-case
GND pin current. The GND pin current decreases slightly at higher input
voltages. Total GND pin current equals the sum of output 1 and output 2
GND pin currents.
Note 8:
ADJ1/ADJ2 pin bias current flows into the pin.
Note 9:
The LT3029 contains current limit foldback circuitry. See the
Typical Performance Characteristics for current limit as a function of the
V
IN
– V
OUT
differential voltage.
Note 10:
SHDN1/ SHDN2
pin current flows into the pin.
Note 11:
The LT3029 minimum input voltage specification limits dropout
voltage under some output voltage/load conditions. See the curve of
Minimum Input Voltage in the Typical Performance Characteristics.
Note 12:
The LT3029 includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature exceeds the maximum operating junction temperature when
overtemperature protection is active. Continuous operation above the
specified maximum operating junction temperature may impair device
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Embedded System
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