Product Status: Mass Production
OVERVIEW
The EL7586 and EL7586A represent multiple output regulators for use in all large panel, TFT-LCD applications. Both feature a single boost converter with an integrated 2A FET, two positive LDOs for VON
and VLOGIC
generation, and a single negative LDO for VOFF
generation. The boost converter can be programmed to operate in either P-mode or PI-mode for improved load regulation.
Both EL7586 and EL7586A also integrate fault protection for all four channels. Once a fault is detected, the device is latched off until the input supply or EN is cycled. EL7586 also features an integrated start-up sequence for VBOOST /VLOGIC , VOFF , then VON or for VLOGIC , VOFF , VBOOST , and VON . The latter requires a single external transistor. The timing of the start-up sequence is set using an external capacitor.
EL7586A features an immediately-enabled VLOGIC output which is independent of EN input. The VLOGIC output will be switched off if a fault is detected and the power supply needs to be recycled to reset this condition.
Both the EL7586 and EL7586A are pin-compatible, come in the 20 Ld 4x4 QFN package, and are specified for operation over the -40°C to +85°C temperature range.
Both EL7586 and EL7586A also integrate fault protection for all four channels. Once a fault is detected, the device is latched off until the input supply or EN is cycled. EL7586 also features an integrated start-up sequence for VBOOST /VLOGIC , VOFF , then VON or for VLOGIC , VOFF , VBOOST , and VON . The latter requires a single external transistor. The timing of the start-up sequence is set using an external capacitor.
EL7586A features an immediately-enabled VLOGIC output which is independent of EN input. The VLOGIC output will be switched off if a fault is detected and the power supply needs to be recycled to reset this condition.
Both the EL7586 and EL7586A are pin-compatible, come in the 20 Ld 4x4 QFN package, and are specified for operation over the -40°C to +85°C temperature range.
KEY FEATURES
- 2A current limit FET options
- 3V to 5V input
- Up to 20V boost out
- 1% regulation on all outputs
- VLOGIC-VOFF-VBOOST-VON or VBOOST/VLOGIC-VOFF-VON sequence control
- VLOGIC is on from start-up for EL7586A
- Programmable sequence delay
- Fully fault protected
- Thermal shutdown
- Internal soft-start
- 20 Ld 4x4 QFN packages
- Pb-free plus anneal available (RoHS compliant)
BLOCK DIAGRAM
PARAMETRICS
Parameters
EL7586A
Basic Information
Production Status
Mass Production
Input Voltage Min (V)
3
Input Voltage Max (V)
5.5
VBOOST (min) (V)
5.5
VBOOST (max) (V)
20
Boost Current Limit (A)
2
On Voltage Min (V)
5
On Voltage Max (V)
32
Off Voltage Min (V)
-15
Qualification Level
Standard
Logic Voltage Min (V)
1.2
Logic Voltage Max (V)
3.3
# of VCOM
N/A
# of Gamma
N/A
Features
Start-up sequencing (exc. VLOGIC), fault protection
VBOOST (V)
5.5 to 20
Input Voltage Range (V)
3 to 5.5
VLOGIC (V)
1.2 to 3.3
VOFF/VN (V)
-15 to 0
On Voltage Range (V)
5 to 32
Temperature Range
-40 to +85