LTC6091 Dual 140V, Rail-to-Rail Output, Picoamp Input Current Op Amp...........................................................................................................1
LT6118 Current Sense Amplifier, Reference and Comparator with POR...............................................................................................................2
LT6119-1/LT6119-2 Current Sense Amplifier, Reference and Comparators with POR .........................................................................................3
Battery Management
LTC3305 Lead Acid Battery Balancer ...................................................................................................................................................................4
SoftSpan DACs with 10ppm/°C Max Reference ............................................................................15
Energy Harvesting
LTC3331 Nanopower Buck-Boost DC/DC with Energy Harvesting Battery Charger ...........................................................................................16
High Frequency
LTC5599 30MHz to 1300MHz Low Power Direct Quadrature Modulator............................................................................................................17
Hot Swap
™
Controller
LTC4231-1/LTC4231-2 Micropower Hot Swap Controller ..................................................................................................................................18
Interface
LTC2875 ±60V Fault Protected, 3.3V or 5V, 25kV ESD, High Speed CAN Transceiver ........................................................................................19
LTM2884 Isolated USB Transceiver with Isolated Power ...................................................................................................................................21
Isolated µModule DC/DC Converter with LDO Post Regulator ...................................................................................23
Supercap Charger
LTC3350 High Current Supercapacitor Backup Controller and System Monitor .................................................................................................24
Contents
Switching Regulators—Monolithic
LTC3114-1 40V, 1A Synchronous Buck-Boost DC/DC Converter with Programmable Output Current ...............................................................25
LTC3622/LTC3622-2 17V, Dual 1A Synchronous Step-Down Regulator with Ultralow Quiescent Current .........................................................27
LT3669/LT3669-2 IO-Link Transceiver with Integrated Step-Down Regulator and LDO .....................................................................................28
LT8610AC 42V, 3.5A Synchronous Step-Down Regulator with 2.5µA Quiescent Current ..................................................................................30
, Synchronous Step-Down Controller with 24V Output Voltage Capability................................................................................32
LT8311 Synchronous Rectifier Controller with Opto-Coupler Driver for Forward Converters ............................................................................33
System Monitor and Control
LTC2946 Wide Range I
2
C Power, Charge and Energy Monitor ...........................................................................................................................35
LTC2933 Programmable Hex Voltage Supervisor with EEPROM..........................................................................................................................36
Design Note
DN528 Dual Phase Buck Controller Drives High Density 1.2V/60A Supply with Submilliohm DCR Sensing
L,
Linear Express, Linear Technology, LT, LTC, LTM, Burst Mode, Dust, Dust Networks, Eterna, FilterCAD, Linear Express, LTspice, Manager-on-Chip, OPTI-LOOP, Over-The-Top, PolyPhase, Silent
Switcher, SmartMesh, SwitcherCAD, SwitcherCAD, TimerBlox, µModule and the Linear logo are registered trademarks of Linear Technology Corporation. Adaptive Power, Bat-Track, BodeCAD, C-Load,
UltraFast, Virtual Remote Sense, Virtual Remote Sensing, VLDO and VRS are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
Amplifiers
LTC6091
Dual 140V, Rail-to-Rail Output,
Picoamp Input Current Op Amp
FEATURES
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DESCRIPTION
Supply Range: ±4.75V to ±70V (140V)
0.1Hz to 10Hz Noise: 3.5μV
P-P
Input Bias Current: 50pA Maximum
Low Offset Voltage: 1.25mV Maximum
Low Offset Drift: ±5μV/°C Maximum
CMRR: 130dB Minimum
Rail-to-Rail Output Stage
Output Sink and Source: 50mA
12MHz Gain-Bandwidth Product
21V/μs Slew Rate
11nV/√Hz Noise Density
Thermal Shutdown
4mm
×
6mm 16-Lead QFN Package
APPLICATIONS
The LTC
®
6091 is a dual, high voltage precision operational amplifier.
The low noise, low bias current input stage is ideal for high gain
configurations. The LTC6091 has low input offset voltage, a rail-to-
rail output stage, and can be run from a single 140V or split ±70V
supplies.
The LTC6091 is internally protected against overtemperture
conditions. A thermal warning output,
TFLAG,
goes active when the
die temperature approaches 150°C. The output stage can be turned
off with the output disable pin
OD.
By tying the
OD
pin to the thermal
warning output, the part will disable the output stage when it is out
of the safe operating area. These pins easily interface to any logic
family.
The LTC6091 is unity-gain stable with up to a 200pF output
capacitor. A wide input and output common mode range along with
many features makes the LTC6091 useful for many high voltage
applications.
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Automatic Test Equipment
Piezo Drivers
Photodiode Amplifier
High Voltage Regulators
Optical Networking
V
OUT
vs Time
10
SELECT
CHA/CHB 0
10V/DIV
TOP VIEW
COMA
ODA
16
–INA 1
+INA 2
V
–
3
COMB 4
–INB 5
+INB 6
17
V
–
15
14 V
+
A
13 OUTA
12
TFLAGA
11
ODB
10 V
+
B
9 OUTB
MUX OUT
20V/DIV
CHB
CHA
CHB
6091 TA01b
TIME (200µs/DIV)
High Voltage Analog MUX
SELECT
CHA/CHB
10k
7
V
–
8
TFLAGB
+
–
ODA
COMA
UFE PACKAGE
32(16)-LEAD (4mm
×
6mm) PLASTIC QFN
LTC6091IUFE
LTC6091HUFE
1/2 LTC6091
CHA
IN
10k
100k
MUX OUT
10k
+
–
ODB
COMB
1/2 LTC6091
CHB
IN
10k
100k
6091 TA01a
CHA
IN
= 10V
P-P
, 20kHz SINE
CHB
IN
= 5V
P-P
, 20kHz TRIANGLE
1
Amplifiers
LT6118
Current Sense Amplifier, Reference
and Comparator with POR
FEATURES
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DESCRIPTION
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Current Sense Amplifier
– Fast Step Response: 500ns
– Low Offset Voltage: 200µV Maximum
– Low Gain Error: 0.2% Maximum
Internal 400mV Precision Reference
Internal Comparator
– Power-On Reset Capability
– Fast Response Time: 500ns
– Total Threshold Error: ±1.25% Maximum
Wide Supply Range: 2.7V to 60V
Supply Current: 450µA
Specified for –40°C to 125°C Temperature Range
Available in 8-Lead MSOP and 8-Lead (2mm
×
3mm) DFN
Packages
APPLICATIONS
The LT
®
6118 is a complete high side current sense device that
incorporates a precision current sense amplifier, an integrated
voltage reference and a latching comparator. The comparator latch
functionality can be enabled or disabled and the comparator can
be configured to reset upon power-on. The input and the open-
drain output of the comparator are independent from the current
sense amplifier. The comparator trip point and amplifier gain are
configured with external resistors.
The overall propagation delay of the LT6118 is typically only 1.4µs,
allowing for quick reaction to overcurrent conditions. The 1MHz
bandwidth allows the LT6118 to be used for error detection in
critical applications such as motor control. The high threshold
accuracy of the comparator, combined with the ability to latch the
comparator, ensures the LT6118 can capture high speed events.
The LT6118 is fully specified for operation from –40°C to 125°C,
making it suitable for industrial and automotive applications. The
LT6118 is available in the small 8-lead MSOP and 8-lead DFN
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