ISL97694A

Single or Multiple Cell Li-ion Battery Powered 6-Channel LED Drivers

Product Status: 量産中

OVERVIEW

The ISL97692, ISL97693, ISL97694A are Intersil’s highly integrated 4- and 6-channel LED drivers for display backlighting. These parts maximize battery life by featuring only 1mA quiescent current, and by operating down to 2.4V input voltage, with no need for higher voltage supplies.

The ISL97692 has four channels and provides 8-bit PWM dimming with adjustable dimming frequency up to 30kHz. The ISL97693 has six channels with Direct PWM dimming control. The ISL97694A has 6 channels and provides 8-, 10-, or 12-bit PWM dimming with adjustable dimming frequency up to 30kHz, 7.5kHz, or 1.875kHz, respectively, controlled with I2 C or PWM input.

The ISL97692 and ISL97694A feature phase shifting that may be enabled optionally, providing an optimized phase delay between channels. In the ISL97692 and ISL97694A, phase shifting can multiply the effective dimming frequency by four and six allowing above audio-band PWM dimming with 10-bit dimming resolution.

The ISL97692, ISL97693, ISL97694A employ adaptive boost architecture, which keeps the headroom voltage as low as possible to maximize battery life while allowing ultra low dimming duty cycle as low as 0.005% at 100Hz dimming frequency in Direct PWM mode.

The ISL97692, ISL97693, ISL97694A incorporate extensive protection functions including string open and short circuit detections, OVP, and OTP.

The ISL97692, ISL97693 are offered in the 16 Ld 3x3mm TQFN package, and a 16 bump 1.7x1.7mm WLCSP for the ISL97692. The ISL97694A is offered in the 20 Ld 3x4mm TQFN package. All parts operate in ambient temperature range of -40°C to +85°C.

KEY FEATURES

  • 2.4V minimum input voltage, supports single cell applications
  • 4 channels, up to 40mA each (ISL97692) or 6 channels, up to 30mA each (ISL97693, ISL97694A)
  • 90% efficient at 6P5S, 3.7V and 20mA (ISL97693, ISL97694A)
  • Low 0.8mA quiescent current
  • PWM dimming control with internally generated clock
  • 8-bit resolution with adjustable dimming frequency up to 30kHz (ISL97692, ISL97694A)
  • 12-bit resolution with adjustable dimming frequency up to 1.875kHz (ISL97694A)
  • Optional automatic channel phase shift (ISL97692, ISL97694A)
  • Linear dimming from 0.025%~100% up to 5kHz or 0.4%~100% up to 30kHz (ISL97692, ISL97694A)
  • Direct PWM dimming with 0.005% minimum duty cycle at 100Hz
  • ±2.5% output current matching
  • Adjustable switching frequency from 400kHz to 1.5MHz

PARAMETRICS

Parameters
ISL97694A
Basic Information
Production Status
量産中
チャネル当たりのデバイス数
6
DC/DC照明用全電流 (mA)
180
出力電流/チャネル (mA) (max)
30
出力電圧 (V) (max)
26
輝度調節
Yes
バス/出力インタフェース
I2C
入力電圧 (V) (max)
5.5
入力電圧 (V) (min)
2.4
LCD用バックライトサイズ (インチ) (min)
0
LCD用バックライトサイズ (インチ) (max)
17
認定レベル
Standard
ピーク効率 (%)
90
LED数 (max)
6-channel 26V 30mA LED Driver
周波数
0.4, 1.2, 1.5 MHz
IQ (max)
1 mA
ISW (mA) (Typ.)
2800
集積ダイオード
No
過電圧保護
Yes
故障スイッチ
Yes
トポロジ
Inductor Boost
入力電圧範囲 (V)
2.4 to 5.5
LCD用バックライトサイズ
Up to 17
CANサンプル
YES
温度範囲
-40 to +85

ブロック図

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