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PDF EL7532 Data sheet ( Hoja de datos )

Número de pieza EL7532
Descripción Monolithic 2A Step-Down Regulator
Fabricantes Intersil Corporation 
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®
Data Sheet
December 8, 2006
EL7532
FN7435.7
Monolithic 2A Step-Down Regulator
The EL7532 is a synchronous, integrated FET 2A step-down
regulator with internal compensation. It operates with an
input voltage range from 2.5V to 5.5V, which accommodates
supplies of 3.3V, 5V, or a single Li-Ion battery source. The
output can be externally set from 0.8V to VIN with a resistive
divider.
The EL7532 features PWM mode control. The operating
frequency is typically 1.5MHz. Additional features include a
100ms Power-On-Reset output, <1µA shut-down current,
short-circuit protection, and over-temperature protection.
The EL7532 is available in the 10-pin MSOP package,
making the entire converter occupy less than 0.18 in2 of
PCB area with components on one side only. The package is
specified for operation over the full -40°C to +85°C
temperature range.
Ordering Information
PART TAPE &
PKG.
PART NUMBER MARKING REEL PACKAGE DWG. #
EL7532IY
www.DataSheet4U.comEL7532IY-T7
BABAA
BABAA
- 10 Ld MSOP MDP0043
7” 10 Ld MSOP MDP0043
EL7532IY-T13 BABAA
13” 10 Ld MSOP MDP0043
EL7532IYZ
(Note)
BAARA
- 10 Ld MSOP MDP0043
(Pb-free)
EL7532IYZ-T7 BAARA
(Note)
7” 10 Ld MSOP MDP0043
(Pb-free)
EL7532IYZ-T13 BAARA
(Note)
13” 10 Ld MSOP MDP0043
(Pb-free)
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are RoHS compliant and
compatible with both SnPb and Pb-free soldering operations. Intersil
Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of
IPC/JEDEC J STD-020.
Pinout
EL7532 (10 LD MSOP)
TOP VIEW
1 SGND
2 PGND
3 LX
4 VIN
5 VDD
FB 10
VO 9
POR 8
EN 7
RSI 6
Features
• 2A continuous current (from -40°C to +85°C)
• Less than 0.18 in2 footprint for the complete 2A converter
• Max height 1.1mm MSOP10
• 1.5MHz (typ.) switching frequency
• 100ms Power-On-Reset output (POR)
• Internally-compensated voltage mode controller
• Up to 94% efficiency
• <1µA shut-down current
• Overcurrent and over temperature protection
• Pb-free plus anneal available (RoHS compliant)
Applications
• PDA and pocket PC computers
• Bar code readers
• ADSL modems
• Portable instruments
• Li-Ion battery powered devices
• ASIC/FPGA/DSP supplies
• Set top boxes
Typical Application Schematic
VS (2.5V to 5.5V)
L1
R3 100Ω
C2 C3
VIN
VDD
LX 1.8µH
C1
10µF
10µF
0.1µF
EL7532
VO
R5 100kΩ
R4 100kΩ
R6
100kΩ
POR
EN
RSI
PGND
SGND
R1*
124kΩ
FB
R2*
100kΩ
C4
470pF
VO (1.8V @ 2A)
* VO = 0.8V * (1 + R1 / R2)
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2004, 2005, 2006. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.

1 page




EL7532 pdf
Typical Performance Curves (Continued)
EL7532
1
0.5 VO = 0.8V
0
VO = 1.8V
-0.5
-1
0 0.5 1 1.5 2 2.5
IOUT (A)
FIGURE 7. LOAD REGULATION @ VIN = 2.5V
ΔVIN
iL
100mV/d
0.5A/d
VLX 2V/d
ΔVO
10mV/d
1µs/d
FIGURE 8. LOAD REGULATION @ VIN = 2.5V
VIN
(1V/d)
IIN
(0.5A/d)
VO
(1V/d)
0.5ms/d
FIGURE 9. START-UP 1
VIN
(2V/d)
VO
(2V/d)
POR
(2V/d)
50ms/d
FIGURE 10. START-UP 2
VIN
(2V/d)
VO
(2V/d)
RSI
(2V/d)
POR
(2V/d)
50ms/d
FIGURE 11. POR FUNCTION
5
ΔVO 50mV/d
2A
IO
0.1A
0.5ms/d
FIGURE 12. TRANSIENT RESPONSE
FN7435.7
December 8, 2006

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