Description
LDA111 is an optocoupler with a single or darlington transistor output.
A bi-directional or uni-directional input is available depending on which model you choose.
Current transfer ratios range from 33% to 1000%

Features
*AC and DC Input Versions Available
*Small 6 Pin DIP Package
*100mA Continuous Load Rating
*3750VRMS Input/Output Isolation
*Machine Insertable, Wave Solderable
*Surface Mount and Tape & Reel Versions Available

Applications
*Telecom Switching
*Tip/Ring Circuits
*Modem Switching (Laptop, Notebook, Pocket Size)
*Loop Detect
*Ring Detect
*Current Sensing

LDA111
LDA111S
LDA111STR

 

LDA111-Solid State Current Sensors

General Description
 The DM163 is a LED driver that comprises shift registers, data latches, 8x3-channel constant current circuitry with current value set by 3 external resistors, and 64 x 256 gray level PWM (Pulse Width Modulation) function unit.
Each channel provides a maximum current of 60 mA.
The grayscale data are separated into BANK0 and BANK1 respectively, selected by SELBK pin. BANK0 is 6-bits grayscale data and the BNAK1 is 8-bits grayscale data.
Depending on the system requirement, both PWM banks could be utilized jointly to achieve maximum 8+6 bit grayscale performance.
Alternatively, users can choose either 64-graylevel bank or 256-graylevel bank for dot correction, and the remaining bank as image data.
DM163 could also be constructed as a PWM controller for LED drivers.
When VDDH is connected to VDD, each of the 24 output channels outputs can act as an inverse digital signal for controlling the LED driver.

Features
* 24 Output Channels
* 8 + 6-bits PWM grayscale Control
* Constant Current Output: 5mA to 60mA
* LED Power Supply Voltage up to 17V
* VDD=3V to 5.5V
* Varied Output Current Level Set By 3 External Resistors
* Serial Shift-In Architecture for Grayscale Data

 

DM163 - 8x3-CHANNEL CONSTANT CURRENT LED DRIVER

DESCRIPTION
 The KB1365, step-down constant-current high-brightness LED (HB LED) drivers provide a cost-effective solution for automotive interior/exterior lighting, architectural and ambient lighting, LED bulbs such as MR16 and other LED illumination applications.
The KB1365 operate from a 5.5v to 40V input voltage range and feature a 5V/10mA on-board regulator.
A high-side current-sense resistor adjusts the output current and a dedicated PWM input (DIM) enables a wide range of pulsed dimming.
The KB1365 i well suited for applications requiring a wide input voltage range.
The high-side current-sensing and an integrated current-setting circuitry minimize the number of external components while delivteretic coltrol algorithm ensures excellent input-supply rejection and fast response during load transients and PWM dimming.
The KB1365 featurds a 20% inductor current ripple.
These devices operate up to 2MHz switching frequency, thus allowing for small component size.

FEATURES
* 5.5V to 40V Input Voltage Range
* High-Side Current Sense
* 20kHz Maximum Dimming Frequency
* Hysteretic Contorl: No Compensation
* 200m V Low Reference Voltage(5%)
* Dedicated Dimming Control Input
* Up to 2MHz Switching Frequency
* Adjustable Constant LED Current
* Up to 5 A Constant Current Output
* 5V, 10mA On-Board Regulator
* -40˚C to +125˚C Operating Temperature Range
* SOT23-6 package

APPLICATIONS
* MR16 and Other LED bulbs
* Power Led driver
* Constant Current Source

KB1365GRE

 

KB1365 - 2MHz High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming

Description
 The ZXLD1321 is an inductive DC-DC converter, with an internal switch, designed for driving single or multiple LEDs in series up to a total of 1A output current.
Applications cover commercial environments with input voltages ranging from 1.2V to 12V.
The device employs a variable 'on' and 'off' time control scheme with adjustable peak switch current limiting and supports step-up (Boost) mode and self-powering Bootstrap operating modes, offering higher power efficiency and lower system cost than conventional PFM circuitry.
The device includes the DC-DC converter, a high-side current monitor and an NPN switching transistor to provide an integrated solution offering small PCB size, competitive cost/performance, high power efficiency of DC-DC conversion and maximum LED brightness/reliability.
More importantly, it retains design flexibility to add customer specific features.
The feedback control circuitry inside the ZXLD1321 provides excellent load and current regulation, resulting in very stable LED current over the useful life of the battery and over the full operating temperature range.
The LED current can be adjusted from 100% down to 10% of the set value by applying a dc voltage to the ADJ pin and down to 1% by applying a PWM signal to the ADJ pin.
An onchip LED protection circuit also allows output current to be reduced linearly above a predetermined threshold temperature using an external thermistor at the TADJ pin.
External resistors set nominal average LED current and coil peak current independently.
The device can be shut down by applying a continuous low level dc voltage to the ADJ pin.

Features
• 1.2V to 12V Input voltage range
• Up to 1A output current
• Typical efficiency# >85%
• Bootstrap operation enables input voltage down to 1V
• User-defined thermal control of LED output current using external thermistor
• High output current stability over input voltage and temperature
• 12μA typical standby current
• LED current adjustable from 100% down to 2%
• Adjustable soft-start
• Drives up to 5 white LEDs in series

Applications
• High power LED flashlights
• LED back-up lighting
• General LED lighting
• Emergency lighting

GRM31CR71H475K
GRM31MR71E225K
MSS7341-103ML
NPIS64D100MTRF  

ZXLD1321 - Boost mode DC-DC converter for LED driving with 1A output and current control

DESCRIPTION
 The M74HC4852 is a dual four-channel analog MULTIPLEXER/DEMULTIPLEXER fabricated
with silicon gate C2MOS technology.
It is pin to pin compatible with the equivalent to standard HC4052 and MC14052, but features injection current effect control.
This makes this device especially suited for usage in automotive applications where voltages in excess of normal logic voltage are common.
The injection current effect control allows signals at disabled input channels to exceed the supply voltage range or go down ground without affecting the signal of the enabled analog channel.
This eliminates the need for external diode-resistor networks typically used to keep the analog channel signals within the supply voltage range.
This analog switch is bidirectional and digitally controlled.
It has two binary control inputs A and B to select 1 of 4 to be turned on, and connected to the output, and a INH input to disable all channels.
All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage.

* LOW POWER DISSIPATION: ICC = 2mA(MAX.) at TA=25°C
* INJECTION CURRENT PROTECTION: VDOUT<1mV at VCC=5V IIN≤1mA RS≤3.9KW
* "ON"RESISTANCE at TA=25°C:
- 215W TYP. (VCC = 3.0V)
- 150W TYP. (VCC = 4.5V)
- 160W TYP. (VCC = 6V)
* FAST SWITCHING: tpd = 8.6ns (TYP.) at TA = 25 °C, VCC = 4.5V
* WIDE OPERATING SUPPLY VOLTAGE RANGE: VCC = 2V TO 6V
* HIGH NOISE IMMUNITY: VNIH = VNIL = 28% VCC (MIN.)
* PIN AND FUNCTION COMPATIBLE WITH SERIES 4052, 4852
* LATCH-UP PERFORMANCE EXCEEDS 500mA (JESD 17)
* ESD PERFORMANCE:
- HBM > 2000V (JESD22-A114B);
- MM > 200V

M74HC4852RM13TR
M74HC4852MWR
M74HC4852TTR  

M74HC4852 - DUAL 4:1 CHANNEL ANALOG MUX/DEMUX WITH INJECTION CURRENT PROTECTION