メインコンテンツに移動
2.4V LED Driver with Independent Analog and PWM Dimming Controls of 2 Backlights for 3D Application

パッケージ情報

Pkg. Type: TQFN
Pkg. Code: LCV
Lead Count (#): 16
Pkg. Dimensions (mm): 3.00 x 3.00 x 0.75
Pitch (mm): 0.5

環境及び輸出分類情報

Moisture Sensitivity Level (MSL) 3
Pb (Lead) Free Yes
ECCN (US) EAR99
HTS (US) 8542.39.0090
RoHS (ISL97691IRTZ-TK) ダウンロード

製品スペック

Lead Count (#) 16
Carrier Type Reel
Moisture Sensitivity Level (MSL) 3
Pb (Lead) Free Yes
Pb Free Category Pb-Free 100% Matte Tin Plate w/Anneal-e3
Temp. Range (°C) -40 to +85°C
Backlight for LCD Size (inches) 17 - 17
Brightness Control Yes
Channels (#) 4
Fault Switch Yes
Frequency Range (MHz) .4 - 1.5
IQ (Max) (μA) 1000
ISW (Typical) (mA) 2800
Input Voltage (Max) (V) 5.5
Input Voltage (Min) (V) 2.4
Input Voltage Range (V) 2.4 - 5.5
Integrated Diode No
LEDs (#) 4
Length (mm) 3.0
MOQ 1000
Output Current Max/Channel (mA) 60
Output Voltage (Max) (V) 21
Over Voltage Protection Yes
Parametric Category Backlight LED Drivers
Peak Efficiency (%) 90
Pitch (mm) 0.5
Pkg. Dimensions (mm) 3.0 x 3.0 x 0.75
Pkg. Type TQFN
Qualification Level Standard
Thickness (mm) 0.75
Topology [Rail 1] Inductor Boost
Total Current for DC/DC Lighting (mA) 240
Width (mm) 3.0

説明

The ISL97691 is Intersil’s highly integrated 4 channel LED driver for single cell Li-Ion battery operated mobile displays requiring analog dimming, and for 3D mobile display applications. It drives four 40mA channels of LEDs up to 26V from an input supply 2. 4V to 5. 5V. The ISL97691 will also drive 60mA channels up to 21V at 30% duty for high peak current 3D modes. The ISL97691 provides 4 channels of current with 2 independent analog dimming controls and 2 independent PWM dimming controls. Channels 1 and 2 form one channel group and channels 3 and 4 form the other channel group. Each channel group’s analog dimming is controlled through 1-Wire communication with 6-bit resolution and each channel group’s PWM dimming is controlled by a separate PWM input. This unique setup allows 2D or 3D application where independent and dynamic channel control of LED peak current and PWM dimming duty cycle are possible. The ISL97691 employs adaptive boost architecture that allows ultra low dimming duty cycle as low as 0. 005% at 100Hz dimming frequency. The driver features dynamic headroom control that monitors the highest LED forward voltage string and uses its feedback signal for the minimum output regulation. The ISL97691 incorporates extensive protection functions including string open and short circuit detections, OVP, and OTP. The switching frequency can be adjusted from 400kHz to 1. 5MHz. The device is offered in a 16 Ld TQFN 3x3mm package and can operate in ambient temperature from -40°C to +85°C.