EL7583

3-Channel DC/DC Converter

Product Status: 量産中

OVERVIEW

The EL7583 is a 3-channel DC/DC converter IC which is designed primarily for use in TFT-LCD applications. It features a PWM boost converter with 2.7V to 14V input capability and 5V to 17V output, which powers the column drivers and provides up to 470mA @ 12V, 370mA @ 15V from 5V supply. A pair of charge pump control circuits provide regulated outputs of VON and VOFF supplies at 8V to 40V and -5V to -40V, respectively, each at up to 60mA.

The EL7583 features adjustable switching frequency, adjustable soft start, and a separate output VON enable control to allow selection of supply start-up sequence. An over-temperature feature is provided to allow the IC to be automatically protected from excessive power dissipation.

The EL7583 is available in a standard 20 Ld TSSOP package and the Pb-free 20 Ld HTSSOP package. Both are specified for operation over the full -40°C to +85°C temperature range.

KEY FEATURES

  • TFT-LCD display supply
  • Boost regulator
  • VON charge pump
  • VOFF charge pump
  • 2.7V to 14V VIN supply
  • 5V < VBOOST < 17V
  • 5V < VON < 40V
  • -40V < VOFF < 0V
  • VBOOST = 12V @ 470mA
  • VBOOST = 15V @ 370mA
  • High frequency, small inductor DC/DC boost circuit
  • Over 90% efficient DC/DC boost converter capability
  • Adjustable frequency
  • Adjustable soft-start
  • Adjustable outputs
  • Small parts count
  • Pb-free plus anneal available (RoHS compliant)

PARAMETRICS

Parameters
EL7583
Basic Information
Production Status
量産中
入力電圧 (V) (min)
2.7
入力電圧 (V) (max)
14
VBOOST (V) (min)
5
VBOOST (V) (max)
17
ブースト電流制限 (A)
1.75
オン電圧 (V) (min)
5
オン電圧 (V) (max)
40
オフ電圧 (V) (min)
-40
認定レベル
Standard
ロジック電圧 (V) (min)
N/A
ロジック電圧 (V) (max)
N/A
VCOM
N/A
ガンマ数
N/A
特長
Adjustable frequency, adjustable soft-start
VBOOST (V)
5 to 17
入力電圧範囲 (V)
2.7 to 14
VLOGIC (V)
N/A
VOFF/VN (V)
-40 to 0
オン電圧範囲 (V)
5 to 40
CANサンプル
YES
温度範囲
-40 to +85

ブロック図

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