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ISL80030FRZ-T

Description
3A Synchronous Buck Converter In 2x2 DFN Package
File Size1MB,20 Pages
ManufacturerIntersil ( Renesas )
Websitehttp://www.intersil.com/cda/home/
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ISL80030FRZ-T Overview

3A Synchronous Buck Converter In 2x2 DFN Package

DATASHEET
ISL80030, ISL80030A, ISL80031, ISL80031A
3A Synchronous Buck Converter in 2x2 DFN Package
The
ISL80030, ISL80030A, ISL80031,
and
ISL80031A
are highly
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.
The ISL80030, ISL80030A, ISL80031, and ISL80031A integrate
very low r
DS(ON)
MOSFETs to maximize efficiency. In addition,
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.
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.
The ISL80031 and ISL80031A are configured for PFM
discontinuous conduction operation and provide high
efficiency by reducing switching losses at light loads.
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
than 64mm
2
.
FN8766
Rev.2.00
Nov 16, 2017
Features
• V
IN
range 2.7V to 5.5V
• 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
• Power-good and enable
• 100% duty cycle
• Internal soft-start and soft-stop
• V
IN
undervoltage lockout and V
OUT
overvoltage protection
• Up to 95% peak efficiency
Applications
• General purpose POL
• Industrial, instrumentation, and medical equipment
• Telecom and networking equipment
• Game consoles
Related Literature
• For a full list of related documents, visit our website
-
ISL80030, ISL80030A, ISL80031, ISL80031A
product
pages
ISL80030/ISL80031
VIN
GND
+2.7 TO +5.5V
C
1
22µF
2
1
VIN
PHASE 8
7
C
3
22pF
R
1
200k

1%
L
1
C
2
22µF
+1.8V/3A
VOUT
100
V
OUT
= 3.3V
93
EFFICIENCY (%)
87
80
73
67
60
V
OUT
= 1.8V
V
OUT
= 2.5V
VIN
EPAD
GND
PGND
EN
3
EN
PGND
6
PG
4
PG
9
FB
5
0.6V R
2
100k

1%
(EQ. 1)
V
O
-
R
1
= R
2
----------- –
1
VFB
0
0.3
0.6
0.9
1.2
1.5
1.8
2.1
2.4
2.7
3.0
LOAD (A)
FIGURE 1. TYPICAL APPLICATION CIRCUIT CONFIGURATION
FIGURE 2. EFFICIENCY vs LOAD, ISL80031,
V
IN
= 5V, T
A
= +25°C
FN8766 Rev.2.00
Nov 16, 2017
Page 1 of 20
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