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ISL78236DUALEVAL1Z

更新时间： 2024-11-24 01:10:31
品牌 Logo 应用领域
瑞萨 - RENESAS /
页数 文件大小 规格书
24页 2363K
描述
Dual 3A Current Sharing 2.5MHz High Efficiency Synchronous Buck Regulator

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ISL78236DUALEVAL1Z 数据手册

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DATASHEET  
ISL78236  
FN8624  
Rev.1.00  
Mar. 14, 2017  
Dual 3A Current Sharing 2.5MHz High Efficiency Synchronous Buck Regulator  
The ISL78236 is a dual output, 3A/3A, integrated FET buck  
Features  
regulator for point-of-load power applications. The supply  
• Dual 3A/3A independent outputs  
voltage range is from 2.8V to 6V, allowing for the use of a  
single Li+ cell, three NiMH cells, or a regulated 3V/5V bus  
input. It is optimized for regulating output voltages down to  
1.2V. Each channel provides an output current up to 3A, which  
can be combined to form a single 6A output in current sharing  
mode. The two channels operate 180° out of phase to reduce  
input RMS current and EMI.  
• 2.5MHz synchronous buck regulator with internal MOSFETs  
up to 95% efficiency  
• 2% voltage reference accuracy over-temperature  
• 6A current sharing mode operation  
• Internal or external compensation  
The ISL78236 integrates a pair of low ON-resistance P-channel  
and N-channel internal MOSFETs to maximize efficiency and  
minimize external component count. It can operate up to  
100% duty cycle to maximize operating life as battery voltage  
drops out. When supplying 3A on each channel, the 100% duty  
cycle operation limits the dropout voltage to less than 250mV.  
Other features include internal digital soft-start, independent  
channel enable for power sequencing, overcurrent protection,  
and thermal shutdown.  
• Peak current limiting and hiccup mode short circuit  
protection  
• Reverse overcurrent protection  
• Over-temperature protection shutdown  
• AEC-Q100 qualified  
Applications  
• DSP and embedded processor power supply  
The ISL78236 is offered in a 24 Ld 4mmx4mm QFN package  
with 1mm maximum height. The complete converter occupies  
less than 1.5cm area.  
• Infotainment system power  
2
• Automotive point-of-load power  
The ISL78236 is AEC - Q100 qualified and is rated for the  
automotive temperature range (-40°C to +105°C).  
Related Literature  
• For a full list of related documents, visit our website  
- ISL78236 product page  
100  
2.5V  
1.8V  
OUT  
90  
80  
70  
60  
50  
40  
1.2V/3A  
1.5V/3A  
3V INPUT  
EN1  
LX1  
LX2  
FPGA OR DSP  
POWER  
1.2V  
OUT  
1.5V  
OUT  
PG1  
EN2  
PG2  
ISL78236  
OUT  
ASIC POWER  
0.0  
0.5  
1.0  
1.5  
2.0  
2.5  
3.0  
OUTPUT LOAD (A)  
FIGURE 1. TYPICAL APPLICATION BLOCK DIAGRAM: DUAL OUTPUT  
3A/3A BUCK REGULATOR  
FIGURE 2. EFFICIENCY vs LOAD CURRENT, V = 3.3V, T = +25°C  
IN  
A
FN8624 Rev.1.00  
Mar. 14, 2017  
Page 1 of 24  
1234567...24

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