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ISL80015 PDF预览

ISL80015

更新时间: 2024-12-01 00:45:23
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英特矽尔 - INTERSIL /
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16页 708K
描述
Negative current protection

ISL80015 数据手册

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DATASHEET  
Compact Synchronous Buck Converters  
ISL80020, ISL80020A, ISL80015, ISL80015A  
The ISL80020, ISL80020A, ISL80015 and ISL80015A are highly  
efficient, monolithic, synchronous step-down DC/DC converters  
Features  
• V range 2.7V to 5.5V  
IN  
that can deliver up to 2A 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. They operate  
at either 1MHz or 2MHz switching frequency, thereby providing  
superior transient response and allowing for the use of small  
inductors. They have excellent stability.  
• I  
OUT  
maximum is 1.5A or 2A (see Table 1 on page 2)  
• Switching frequency is 1MHz or 2MHz (see Table 1 on page 2)  
• Overcurrent and short circuit protection  
• Over-temperature/thermal protection  
• Negative current protection  
The ISL80020, ISL80020A, ISL80015 and ISL80015A integrate  
very low r  
MOSFETs in order to maximize efficiency. In  
DS(ON)  
• Power-good and enable  
addition, since the high-side MOSFET is a PMOS, the need for a  
Boot capacitor is eliminated, thereby reducing external  
component count. They can operate at 100% duty cycle  
(at 1MHz).  
• 100% duty cycle (1MHZ)  
• Internal soft-start and soft-stop  
• V undervoltage lockout and V  
IN  
overvoltage protection  
OUT  
The device is configured in PWM (pulse width modulation) for  
fast transient response, which helps reduce the output noise  
and RF interference.  
• Up to 95% peak efficiency  
Applications  
• General purpose POL  
These devices are offered in a space saving 8 pin 2mmx2mm  
TDFN lead free package with exposed pad for improved thermal  
performance. The complete converter occupies less than  
• Industrial, instrumentation, and medical equipment  
• Telecom and networking equipment  
• Game console  
2
64mm area.  
Related Literature  
UG026, “ISL800xxxDEMO1Z Demonstration Boards User  
Guide”  
100  
90  
ISL80015, ISL80020  
L1  
+1.8V/2A  
+2.7V...+5.5V  
1
2
3
4
8
7
6
VIN  
PHASE  
PGND  
NC  
VOUT  
GND  
VIN  
C1  
22µF  
C2  
22µF  
GND  
EN  
80  
C3  
22pF  
EN  
PG  
SGND  
PG  
2.5V  
OUT  
3.3V  
1.5V  
OUT  
R1  
200kΩ 1%  
OUT  
1.8V  
OUT  
70  
60  
50  
40  
5
EPAD  
9
FB  
0.6V  
R2  
100kΩ 1%  
V
O
(EQ. 1)  
------------  
R
= R  
1  
0.0 0.2 0.4  
0.6  
0.8  
1.0  
1.2  
1.4  
1.6  
1.8  
2.0  
1
2
VFB  
OUTPUT LOAD (A)  
FIGURE 1. TYPICAL APPLICATION CIRCUIT CONFIGURATION  
FIGURE 2. EFFICIENCY vs LOAD, f  
= 2MHz, V = 5V, T = +25°C  
IN  
SW  
A
June 5, 2015  
FN6692.3  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2015. 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

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