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ISL78419

更新时间： 2024-11-29 12:51:35
品牌 Logo 应用领域
英特矽尔 - INTERSIL 稳压器
页数 文件大小 规格书
20页 933K
描述
Integrated Automotive TFT-LCD Power Supply Regulator

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ISL78419 数据手册

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Integrated Automotive TFT-LCD Power Supply Regulator  
ISL78419  
Features  
The ISL78419 is an integrated power management IC (PMIC) for  
TFT-LCDs used in central display, rear seat entertainment and  
virtual dashboards. The device integrates a boost converter for  
• 2.5V to 5.5V input  
• 1.5A, 0.18Ω integrated boost FET  
• V /V  
ON OFF  
supplies generated by charge pumps driven by the  
generating A  
, an LDO regulator for VLOGIC. VON and VOFF are  
VDD  
boost switch node  
generated by a charge pump driven by the switch node of the  
boost converter. The ISL78419 also includes a V slice circuit,  
• LDO for VLOGIC channel  
ON  
reset function, and a high performance VCOM amplifier with a  
Digitally Controlled Potentiometer (DCP) that is used as a VCOM  
calibrator.  
• 600kHz/1200kHz selectable switching frequency  
• Integrated gate pulse modulator  
• Reset signal generated by supply monitor  
• Integrated VCOM amplifier  
• DCP  
The AVDD boost converter features a 1.5A/0.18Ω boost FET with  
600kHz/1200kHz switching frequency.  
The integrated logic LDO includes a 350mA FET for driving the low  
voltage needed by external digital circuitry.  
2
- I C serial interface, address: 0101000, MSB left  
- Wiper position stored in 8-bit nonvolatile memory and  
recalled on power-up  
The gate pulse modulator can control the gate voltage up to 30V,  
and both the rate and slew delay times are selectable.  
- Endurance, 1,000 data changes per bit  
The supply monitor generates a reset signal when the system is  
powered down based on a user selected threshold level  
(programming resistor).  
• UVLO, UVP, OVP, OCP, and OTP protection  
• Pb-free (RoHS compliant)  
• 28 Ld 4x5 QFN  
The ISL78419 provides a digitally controlled VCOM output using  
2
I C interface. One VCOM amplifier is also integrated in the chip to  
• AEC - Q100 qualified  
provide a fast slewing 150mA drive (sourcing or sinking). The  
output of the VCOM is powered up with the voltage stored at the  
last programmed 8-bit (internal) EEPROM setting.  
Applications  
• Automotive TFT displays  
The ISL78419 is rated to operate over the temperature range  
of (-40°C to +105°C) and is qualified according to AEC - Q100.  
- Central displays, rear seat entertainment and dashboards  
Pin Configuration  
ISL78419 (28 LD 4x5 QFN)  
TOP VIEW  
28  
27  
26  
25  
24  
23  
FB  
PGND  
CE  
L_IN  
1
2
3
4
5
6
7
8
22  
21  
20  
CD2  
L_OUT  
RESET  
ADJ  
RE  
19  
18  
17  
16  
15  
GND  
THERMAL  
PAD  
VGH  
VGHM  
VFLK  
VDPM  
VDIV  
NEG  
VOUT  
9
10  
11  
12  
13  
14  
December 3, 2012  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2012. All Rights Reserved  
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.  
All other trademarks mentioned are the property of their respective owners.  
1
FN8292.1  
1234567...20

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ISL78420ARTAZ INTERSIL

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 		100V, 2A Peak, Half-Bridge Driver with Tri-Level PWM Input and Adjustable Dead-Time
ISL78420ARTBZ INTERSIL

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 		100V, 2A Peak, Half-Bridge Driver with Tri-Level PWM Input and Adjustable Dead-Time
ISL78420ARTBZ-T INTERSIL

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 		100V, 2A Peak, Half-Bridge Driver with Tri-Level PWM Input and Adjustable Dead-Time
ISL78420AVEZ INTERSIL

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 		100V, 2A Peak, Half-Bridge Driver with Tri-Level PWM Input and Adjustable Dead-Time
ISL78424 RENESAS

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 		100V Boot, 4A Peak, Half-Bridge Driver with Single PWM Input and Adaptive Dead Time Contro
ISL78424AVEZ RENESAS

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 		100V Boot, 4A Peak, Half-Bridge Driver with Single PWM Input and Adaptive Dead Time Contro

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