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Intersil Electronic Components Datasheet

EL7532 Datasheet

Monolithic 2A Step-Down Regulator

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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.


Intersil Electronic Components Datasheet

EL7532 Datasheet

Monolithic 2A Step-Down Regulator

No Preview Available !

EL7532
Absolute Maximum Ratings (TA = 25°C)
VIN, VDD, POR to SGND . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.5V
LX to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to (VIN + +0.3V)
RSI, EN, VO, FB to SGND . . . . . . . . . . . . . . . -0.3V to (VIN + +0.3V)
PGND to SGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +0.3V
Peak Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.4A
ESD Classification
Human Body Model (Per JESD22-A114-B) . . . . . . . . . . . . Class 2
Thermal Information
Thermal Resistance (Typical)
θJA (°C/W)
MSOP10 Package (Note 1) . . . . . . . . . . . . . . . . . . .
115
Operating Ambient Temperature . . . . . . . . . . . . . . . .-40°C to +85°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +125°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1. θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are
at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
Electrical Specifications VDD = VIN = VEN = 3.3V, C1 = C2 = 10µF, L = 1.8µH, VO = 1.8V, unless otherwise specified.
PARAMETER
DESCRIPTION
CONDITIONS
MIN TYP MAX
UNIT
DC CHARACTERISTICS
VFB Feedback Input Voltage
790 800 810 mV
IFB Feedback Input Current
250 nA
VIN, VDD
Input Voltage
2.5 5.5 V
VIN,OFF
Minimum Voltage for Shutdown
VIN falling
2 2.2 V
VIN,ON
Maximum Voltage for Startup
VIN rising
2.2 2.4 V
IDD Supply Current
PWM, VIN = VDD = 5V
400 500
µA
EN = 0, VIN = VDD = 5V
0.1 1 µA
RDS(ON)-PMOS PMOS FET Resistance
VDD = 5V, wafer test only
52 80 mΩ
RDS(ON)-NMOS NMOS FET Resistance
VDD = 5V, wafer test only
35 65 mΩ
ILMAX
Current Limit (GBD)
3A
TOT,OFF
Over-temperature Threshold (GBD)
T rising
145 °C
TOT,ON
Over-temperature Hysteresis (GBD)
T falling
130 °C
IEN, IRSI
EN, RSI Current
VEN, VRSI = 0V and 3.3V
-1 1 V
VEN1, VRSI1 EN, RSI Rising Threshold
VDD = 3.3V
2.4 V
VEN2, VRSI2 EN, RSI Falling Threshold
VDD = 3.3V
0.8 V
VPOR
Minimum VFB for POR, WRT Targeted
VFB Value
VFB rising
VFB falling
95 %
86 %
VOLPOR
POR Voltage Drop
ISINK = 5mA
35 70 mV
VLINEREG
Line Regulation (GBD)
VIN = 2.5V to 6V, IOUT = 2A, VOUT = 1.8V 0.1 %/V
VLOADREG
Load Regulation (GBD)
VIN = 3.3V, VOUT = 1.8V, IOUT = 0 to 2A
0.5 %
AC CHARACTERISTICS
FPWM
PWM Switching Frequency
tRSI Minimum RSI Pulse Width (GBD)
tSS Soft-start Time (GBD)
tPOR
Power On Reset Delay Time (GBD)
GBD = Guaranteed By Design
Guaranteed by design
1.35 1.5 1.65 MHz
25 50 ns
650 µs
80 100 120 ms
2 FN7435.7
December 8, 2006


Part Number EL7532
Description Monolithic 2A Step-Down Regulator
Maker Intersil Corporation
Total Page 8 Pages
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