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ISL80031DEMO1Z

更新时间： 2024-12-02 02:48:43
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瑞萨 - RENESAS /
页数 文件大小 规格书
20页 1308K
描述
3A Synchronous Buck Converter in 2x2 DFN Package

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ISL80031DEMO1Z 数据手册

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DATASHEET  
ISL80030, ISL80030A, ISL80031, ISL80031A  
3A Synchronous Buck Converter in 2x2 DFN Package  
FN8766  
Rev.2.00  
Nov 16, 2017  
The ISL80030, ISL80030A, ISL80031, and ISL80031A are highly  
Features  
efficient, monolithic, synchronous step-down DC/DC converters  
that can deliver up to 3A of continuous output current from a 2.7V  
to 5.5V input supply. They use peak current mode control  
architecture to allow very low duty cycle operation. These devices  
operate at either a 1MHz or 2MHz switching frequency, thereby  
providing superior transient response and allowing for the use of  
small inductors. They also have excellent stability.  
• V range 2.7V to 5.5V  
IN  
• Up to 3A of output current  
• Switching frequency of 1MHz or 2MHz (see Table 1 on page 3)  
• 35µA quiescent current (ISL80031 and ISL80031A)  
• Overcurrent and short-circuit protection  
• Over-temperature/thermal protection  
• Negative current protection  
The ISL80030, ISL80030A, ISL80031, and ISL80031A integrate  
very low r  
MOSFETs to maximize efficiency. In addition,  
DS(ON)  
because the high-side MOSFET is a PMOS, the need for a Boot  
capacitor is eliminated, thereby reducing external component  
count. The devices can operate at 100% duty cycle.  
• Power-good and enable  
• 100% duty cycle  
The ISL80030 and ISL80030A are configured for PWM pulse  
width modulation operation and provide a fast transient  
response, which helps reduce the output noise and RF  
interference.  
• Internal soft-start and soft-stop  
• V undervoltage lockout and V  
IN  
overvoltage protection  
OUT  
• Up to 95% peak efficiency  
The ISL80031 and ISL80031A are configured for PFM  
discontinuous conduction operation and provide high  
efficiency by reducing switching losses at light loads.  
Applications  
• General purpose POL  
• Industrial, instrumentation, and medical equipment  
• Telecom and networking equipment  
• Game consoles  
These devices are offered in a space saving 8 Ld 2mmx2mm  
DFN Pb-free package with exposed pad for improved thermal  
performance. The complete converter occupies an area less  
2
than 64mm .  
Related Literature  
• For a full list of related documents, visit our website  
- ISL80030, ISL80030A, ISL80031, ISL80031A product  
pages  
100  
ISL80030/ISL80031  
V
= 3.3V  
OUT  
L1  
+2.7 TO +5.5V  
+1.8V/3A  
1
2
3
4
8
7
VIN  
VOUT  
GND  
VIN  
VIN  
EN  
PHASE  
PGND  
PGND  
FB  
93  
87  
80  
73  
67  
60  
C2  
22µF  
C1  
22µF  
GND  
EPAD  
C3  
22pF  
6
EN  
PG  
V
= 1.8V  
R1  
OUT  
  
200k 1%  
5
0.6V  
PG  
R2  
100k1%  
V
= 2.5V  
OUT  
9
V
O
(EQ. 1)  
0
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0  
LOAD (A)  
------------  
R
= R  
– 1  
1
2
VFB  
FIGURE 1. TYPICAL APPLICATION CIRCUIT CONFIGURATION  
FIGURE 2. EFFICIENCY vs LOAD, ISL80031,  
= 5V, T = +25°C  
V
IN  
A
FN8766 Rev.2.00  
Nov 16, 2017  
Page 1 of 20  
1234567...20

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