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ISL85402IRZ-T PDF预览

ISL85402IRZ-T

更新时间： 2024-11-15 14:25:51
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瑞萨 - RENESAS 开关
页数 文件大小 规格书
22页 1734K
描述
2.5A Regulator with Integrated High-Side MOSFET for Synchronous Buck or Boost Buck Converter; QFN20; Temp Range: -40° to 85°C

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ISL85402IRZ-T 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：QFN包装说明：4 X 4 MM, ROHS COMPLIANT, PLASTIC, QFN-20
针数：20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.72其他特性：ALSO HAS PFM CONTROL TECHNIQUE
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：CURRENT-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：36 V
最小输入电压：3 V标称输入电压：12 V
JESD-30 代码：S-PQCC-N20JESD-609代码：e3
长度：4 mm湿度敏感等级：1
功能数量：1端子数量：20
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：2.5 A标称输出电压：4.5 V
封装主体材料：PLASTIC/EPOXY封装代码：HVQCCN
封装等效代码：LCC20,.16SQ,20封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：BUCK-BOOST最大切换频率：2450 kHz
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn) - annealed
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：30
宽度：4 mmBase Number Matches：1

ISL85402IRZ-T 数据手册

 浏览型号ISL85402IRZ-T的Datasheet PDF文件第2页浏览型号ISL85402IRZ-T的Datasheet PDF文件第3页浏览型号ISL85402IRZ-T的Datasheet PDF文件第4页浏览型号ISL85402IRZ-T的Datasheet PDF文件第5页浏览型号ISL85402IRZ-T的Datasheet PDF文件第6页浏览型号ISL85402IRZ-T的Datasheet PDF文件第7页 
DATASHEET  
NOT RECOMMENDED FOR NEW DESIGNS  
RECOMMENDED REPLACEMENT PART  
ISL85403  
ISL85402  
FN7640  
Rev 1.00  
April 25, 2013  
2.5A Regulator with Integrated High-Side MOSFET for Synchronous Buck or  
Boost Buck Converter  
The ISL85402 is a synchronous buck controller with a 125mΩ  
Features  
high-side MOSFET and low-side driver integrated. The ISL85402  
supports a wide input range of 3V to 36V in buck mode. It  
• Buck Mode: Input Voltage Range 3V to 36V (Refer to “Input  
Voltage” on page 13 for more details)  
supports 2.5A continuous load under conditions of 5V V , V  
OUT IN  
range of 8V to 36V, 500kHz and +105°C ambient temperature  
with still air. For any specific application, the actual maximum  
output current depends upon the die temperature not exceeding  
+125°C with the power dissipated in the IC, which is related to input  
voltage, output voltage, duty cycle, switching frequency, board layout  
and ambient temperature, etc. Refer to “Output Current” on page 14  
for more details.  
• Boost Mode Expands Operating Input Voltage Lower Than  
2.5V (Refer to “Input Voltage” on page 13 for more details)  
• Selectable Forced PWM Mode or PFM Mode  
• 300µA IC Quiescent Current (PFM, No Load); 180µA Input  
Quiescent Current (PFM, No Load, V  
AUXVCC)  
Connected to  
OUT  
• Less than 3µA Shut Down Input Current (IC Disabled)  
• Operational Topologies  
The ISL85402 has a flexible selection of operation modes of  
forced PWM mode and PFM mode. In PFM mode, the  
quiescent input current is as low as 180µA (AUXVCC connected  
- Synchronous Buck  
to V  
). The load boundary between PFM and PWM can be  
- Non-Synchronous Buck  
OUT  
programmed to cover wide applications.  
- Two-Stage Boost Buck  
The low-side driver can be either used to drive an external low-side  
MOSFET for a synchronous buck, or left unused for a standard  
non-synchronous buck. The low-side driver can also be used to  
drive a boost converter as a pre-regulator followed by a buck  
controlled by the same IC, which greatly expands the operating  
input voltage range down to 2.5V or lower (Refer to “Typical  
Application Schematic III - Boost Buck Converter” on page 5).  
• Programmable Frequency from 200kHz to 2.2MHz and  
Frequency Synchronization Capability  
• ±1% Tight Voltage Regulation Accuracy  
• Reliable Overcurrent Protection  
- Temperature Compensated Current Sense  
- Cycle-by-Cycle Current Limiting with Frequency Foldback  
- Hiccup Mode for Worst Case Short Condition  
The ISL85402 offers the most robust current protections. It  
uses peak current mode control with cycle-by-cycle current  
limiting. It is implemented with frequency foldback under  
current limit condition; besides that, the hiccup overcurrent  
mode is also implemented to guarantee reliable operations  
under harsh short conditions.  
• 20 Ld 4x4 QFN Package  
• Pb-Free (RoHS Compliant)  
Applications  
• General Purpose  
• 24V Bus Power  
• Battery Power  
The ISL85402 has comprehensive protections against various faults  
including overvoltage and over-temperature protections, etc.  
•
Point of Load  
• Embedded Processor and I/O Supplies  
100  
95  
90  
85  
80  
75  
70  
65  
60  
55  
50  
6V V  
IN  
PGOOD  
12V V  
IN  
EN  
V
IN  
VIN  
BOOT  
MODE  
SYNC  
AUXVCC  
36V V  
IN  
24V V  
IN  
VCC  
ILIMIT  
SS  
V
OUT  
ISL85402  
PHASE  
LGATE  
PGND  
EXT_BOOST  
FS  
SGND  
FB  
COMP  
0.1m  
1m  
10m  
100m  
1.0  
2.5  
LOAD CURRENT (A)  
FIGURE 2. EFFICIENCY, SYNCHRONOUS BUCK, PFM MODE,  
5V, T = +25°C  
FIGURE 1. TYPICAL APPLICATION  
V
OUT  
A
FN7640 Rev 1.00  
April 25, 2013  
Page 1 of 22  
1234567...22

中文翻译

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