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LT8410IDC#TRMPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
LT8410/LT8410-1
1
84101fc
For more information www.linear.com/LT8410
APPLICATIONS
n
Sensor Power
n
RF Mems Relay Power
n
General Purpose Bias
TYPICAL APPLICATION
DESCRIPTION
Ultralow Power Boost
Converter with Output
Disconnect
The LT
®
8410/LT8410-1 are ultralow power boost converters
with integrated power switch, Schottky diode and output
disconnect circuitry. The parts control power delivery by
varying both the peak inductor current and switch off-
time. This control scheme results in low output voltage
ripple as well as high efficiency over a wide load range.
The quiescent current is a low 8.5μA, which is further
reduced to 0μA in shutdown. The internal disconnect
circuitry allows the output voltage to be blocked from the
input during shutdown. High value (12.4M/0.4M) resis-
tors are integrated on chip for output voltage detection,
significantly reducing input referred quiescent current. The
LT8410/ LT8410-1 also features a comparator built into the
SHDN pin, overvoltage protection for the CAP and V
OUT
pins, built in soft-start and comes in a tiny 8-pin 2mm ×
2mm DFN package.
General Purpose Bias with Wide Input Voltage
FEATURES
n
Ultralow Quiescent Current
8.5μA in Active Mode
0μA in Shutdown Mode
n
Comparator Built into SHDN Pin
n
Low Noise Control Scheme
n
Adjustable FB Reference Voltage
n
Wide Input Range: 2.5V to 16V
n
Wide Output Range: Up to 40V
n
Integrated Power NPN Switch
25mA Current Limit (LT8410)
8mA Current Limit (LT8410-1)
n
Integrated Schottky Diode
n
Integrated Output Disconnect
n
High Value (12.4M/0.4M) Feedback Resistors
Integrated
n
Built in Soft-Start (Optional Capacitor from V
REF
to GND)
n
Overvoltage Protection for CAP and V
OUT
Pins
n
Tiny 8-Pin 2mm × 2mm DFN Package
SW CAP
GND
CHIP
ENABLE
FBP
8410-1 TA01a
LT8410
2.2µF
0.1µF
100µH
0.1µF
0.1µF*
V
OUT
= 16V
V
IN
2.5V to 16V
V
CC
V
OUT
V
REF
SHDN
604k
412k
*HIGHER VALUE CAPACITOR IS REQUIRED
WHEN THE V
IN
IS HIGHER THAN 5V
LOAD CURRENT (mA)
0.01
V
OUT
PEAK-TO-PEAK RIPPLE (mV)
10
8
2
6
4
0
8410-1 TA02
1010.1
V
IN
= 3.6V
LOAD CURRENT (mA)
0.01
EFFICIENCY (%)
100
50
60
70
80
90
40
8410-1 TA03
100100.1 1
V
IN
= 12V
V
IN
= 5V
V
IN
= 3.6V
Output Voltage Ripple
vs Load Current
Efficiency vs Load Current
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 5481178, 6580258, 6304066, 6127815, 6498466,
6611131.
LT8410/LT8410-1
2
84101fc
For more information www.linear.com/LT8410
PIN CONFIGURATIONABSOLUTE MAXIMUM RATINGS
V
CC
Voltage ................................................–0.3V to 16V
SW Voltage
................................................–0.3V to 42V
CAP Voltage
...............................................–0.3V to 40V
V
OUT
Voltage ..............................................–0.3V to 40V
SHDN Voltage ............................................–0.3V to 16V
V
REF
Voltage ..............................................–0.3V to 2.5V
FBP Voltage
..............................................–0.3V to 2.5V
Maximum Junction Temperature .......................... 125°C
Operating Temperature Range (Note 2)..–40°C to 125°C
Storage Temperature Range
...................–65°C to 150°C
(Note 1)
TOP VIEW
SHDN
V
CC
GND
SW
FBP
V
REF
CAP
V
OUT
DC PACKAGE
8-LEAD (2mm × 2mm) PLASTIC DFN
9
4
1
2
3
6
5
7
8
T
JMAX
= 125°C, θ
JA
= 88°C/W
EXPOSED PAD (PIN #9) IS GND, MUST BE SOLDERED TO PCB
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Minimum Operating Voltage 2.2 2.5 V
Maximum Operating Voltage 16 V
Reference Voltage
l
1.220 1.235 1.255 V
V
REF
Current Limit (Note 3) 10 µA
V
REF
Discharge Time 70 µS
V
REF
Line Regulation 0.01 %/V
Quiescent Current Not Switching
l
8.5 12 µA
Quiescent Current in Shutdown V
SHDN
= 0V
l
0 1 µA
Quiescent Current from V
OUT
and CAP V
OUT
= 16V 3 µA
Minimum Switch Off Time After Start-Up (Note 4)
During Start-Up (Note 4)
240
600
nS
nS
Switch Current Limit LT8410
LT8410-1
l
l
20
6
25
8
30
10
mA
mA
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 3V, V
SHDN
= V
CC
unless otherwise noted. (Note 2)
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT8410EDC#PBF LT8410EDC#TRPBF LDQR 8-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C
LT8410IDC#PBF LT8410IDC#TRPBF LDQR 8-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C
LT8410EDC-1#PBF LT8410EDC-1#TRPBF LFCC 8-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C
LT8410IDC-1#PBF LT8410IDC-1#TRPBF LFCC 8-Lead (2mm × 2mm) Plastic DFN –40°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/. Some packages are available in 500 unit reels through
designated sales channels with #TRMPBF suffix.
(http://www.linear.com/product/LT8410#orderinfo)
LT8410/LT8410-1
3
84101fc
For more information www.linear.com/LT8410
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 LT8410E/LT8410E-1 are guaranteed to meet performance
specifications from 0°C to 125°C 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.
The LT8410I/LT8410I-1 are guaranteed over the full –40°C to 125°C
operating junction temperature range.
Note 3: See the Applications Information section for more information.
Note 4: Start-up mode occurs when V
OUT
is less than V
FBP
• 64/3.
ELECTRICAL CHARACTERISTICS
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 3V, V
SHDN
= V
CC
unless otherwise noted. (Note 2)
PARAMETER CONDITIONS MIN TYP MAX UNITS
Switch V
CESAT
LT8410, I
SW
= 10mA
LT8410-1, I
SW
= 4mA
150
100
mV
mV
Switch Leakage Current V
SW
= 5V 0 1 µA
Schottky Forward Voltage I
DIODE
= 10mA 650 850 mV
Schottky Reverse Leakage V
CAP
– V
SW
= 5
V
CAP
– V
SW
= 40
0
0
0.5
1
µA
µA
PMOS Disconnect Current Limit LT8410
LT8410-1
14
2.5
19
4
25
5
mA
mA
PMOS Disconnect V
CAP
– V
OUT
I
OUT
= 1mA 50 mV
V
OUT
Resistor Divider Ratio
l
31.6 31.85 32.2
FBP Pin Bias Current V
FBP
= 0.5V, Current Flows Out of Pin
l
1.3 30 nA
SHDN Minimum Input Voltage High SHDN Rising
l
1.20 1.30 1.45 V
SHDN Input Voltage High Hysteresis 60 mV
SHDN Hysteresis Current
(Note 3)
0.08 0.1 0.14 µA
SHDN Input Voltage Low 0.3 V
SHDN Pin Bias Current V
SHDN
= 3V
V
SHDN
= 16V
0
2
1
3
µA
µA
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C, unless otherwise noted.
Switching Frequency
vs Load Current Load Regulation V
OUT
vs FBP Voltage
LOAD CURRENT (mA)
0
SWITCHING FREQUENCY (kHz)
1000
800
600
200
400
0
8410-1 G01
321
V
CC
= 3.6V
V
OUT
= 16V
FIGURE 4 CIRCUIT
LOAD CURRENT (mA)
0
OUTPUT VOLTAGE CHANGE (%)
0.6
0.4
0.2
0
–0.4
–0.2
–0.6
8410-1 G02
321
V
CC
= 3.6V
V
OUT
= 16V
FIGURE 4 CIRCUIT
FBP VOLTAGE (V)
0
OUTPUT VOLTAGE (V)
50
40
30
10
20
0
8410-1 G03
21 1.50.5
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

LT8410IDC#TRMPBF

Mfr. #:
Buy LT8410IDC#TRMPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators Ultralow Power Boost Converter with Output Disconnect
Lifecycle:
New from this manufacturer.
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