Part Number: MAX6964ATG

Function: 17-Output LED Driver/GPO with Intensity Control and Hot-Insertion Protection

Package: 24 Thin QFN

Manufacturer: Dalls Semiconductor, Maxim Integrated

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Description

The MAX6964ATG I2C-compatible serial interfaced peripheral provides microprocessors with 17 output ports. Each output is an open-drain current-sinking output rated at 50mA and 7V. The outputs are capable of driving LEDs, or providing logic outputs with external resistive pullup up to 7V.

Eight-bit PWM current control is also integrated. Four of the bits are global control and apply to all LED outputs to provide coarse adjustment of current from fully off to fully on with 14 intensity steps.

Pinout

Features

1. 400kbps, 2-Wire Serial Interface, 5.5V Tolerant

2. 2V to 3.6V Operation

3. Overall 8-Bit PWM LED Intensity Control
(1) Global 16-Step Intensity Control
(2) Plus Individual 16-Step Intensity Controls

Applications

1. LCD Backlights
2. LED Status Indication
3. Keypad Backlights
4. RGB LED Drivers

Other data sheets are available within the file: MAX6964AEG, MAX6964

MAX6964ATG Datasheet PDF Download

 

Part Number: BP9021

Function: High Precision PSR LED Constant Current Driver Chip

Package: SOP 8Pin

Manufacturer: Bright Power Semiconductor ( www.bpsemi.com )

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Description

The BP9021 is a high precision primary-side constant current LED driver chips. Chip inductor in discontinuous current mode for full range 85Vac ~ 265Vac input voltage, power 3W or less isolated flyback LED constant current power supply.

The chip integrated 650V power switch, primary-side feedback mode, no secondary feedback circuit, and without compensation circuitry, requires minimal external components to achieve excellent constant current characteristic. Patented drive and current detection method, the chip operating current is extremely low, no power transformer auxiliary winding detection and further reduce external components, greatly saving system cost and size.

Pinout

Features

1. Integrated 650V power MOSFET

2. PSR constant current control, without secondary feedback circuitry

3. Without detection and power transformer auxiliary winding

4. LED open-circuit voltage can be adjusted by external resistor

5. Chip ultra low operating current

 

BP9021 Datasheet PDF Download

 

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