EL7531IYZ-T7 Intersil, EL7531IYZ-T7 Datasheet

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EL7531IYZ-T7

Manufacturer Part Number
EL7531IYZ-T7
Description
IC REG 1A STEP-DOWN 10-MSOP
Manufacturer
Intersil
Type
Step-Down (Buck)r
Datasheet

Specifications of EL7531IYZ-T7

Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
0.8 ~ 5.5 V
Current - Output
1A
Frequency - Switching
1.4MHz
Voltage - Input
2.5 ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
10-MSOP, Micro10™, 10-uMAX, 10-uSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
EL7531IYZ-T7
Manufacturer:
Intersil
Quantity:
1 250
Company:
Part Number:
EL7531IYZ-T7
Quantity:
5 400
Monolithic 1A Step-Down Regulator with
Low Quiescent Current
The EL7531 is a synchronous, integrated FET 1A 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 Li-Ion battery source. The output can
be externally set from 0.8V to V
The EL7531 features automatic PFM/PWM mode control, or
PWM mode only. The PWM frequency is typically 1.4MHz
and can be synchronized up to 12MHz. The typical no load
quiescent current is only 120µA. Additional features include
a Power-Good output, <1µA shut-down current, short-circuit
protection, and over-temperature protection.
The EL7531 is available in the 10 Ld MSOP package,
making the entire converter occupy less than 0.15 in
PCB area with components on one side only. The 10 Ld
MSOP package is specified for operation over the full -40°C
to +85°C temperature range.
Ordering Information
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
EL7531IY
EL7531IY-T7
EL7531IY-T13
EL7531IYZ
(Note)
EL7531IYZ-T7
(Note)
EL7531IYZ-T13
(Note)
PART NUMBER
BEAAA
BEAAA
BEAAA
BHAAA
BHAAA
BHAAA
MARKING
PART
EL7531 (10 LD MSOP)
1
2
3
4
5
SGND
PGND
LX
VIN
VDD
TOP VIEW
®
TAPE &
REEL
1
IN
13”
13”
SYNC
7”
7”
-
-
with a resistive divider.
VO
PG
EN
FB
Data Sheet
10
9
8
7
6
10 Ld MSOP
10 Ld MSOP
10 Ld MSOP
10 Ld MSOP
(Pb-free)
10 Ld MSOP
(Pb-free)
10 Ld MSOP
(Pb-free)
PACKAGE
2
MDP0043
MDP0043
MDP0043
MDP0043
MDP0043
MDP0043
DWG. #
of
1-888-INTERSIL or 1-888-468-3774
PKG.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
V
S
Features
• Less than 0.15 in
• Components on one side of PCB
• Max height 1.1mm MSOP10
• Power-Good (PG) output
• Internally-compensated voltage mode controller
• Up to 94% efficiency
• <1µA shut-down current
• 120µA quiescent current
• Overcurrent and over-temperature protection
• External synchronizable up to 12MHz
• Pb-Free plus anneal available (RoHS compliant)
Applications
• PDA and pocket PC computers
• Bar code readers
• Cellular phones
• Portable test equipment
• Li-Ion battery powered devices
• Small form factor (SFP) modules
Typical Application Diagram
converter
10µF
C
2
R
R
All other trademarks mentioned are the property of their respective owners.
Copyright © Intersil Americas Inc. 2004, 2005, 2006. All Rights Reserved.
July 13, 2006
5
4
(2.5V to 5.5V)
|
100kΩ
100kΩ
R
100kΩ
Intersil (and design) is a registered trademark of Intersil Americas Inc.
0.1µF
3
100Ω
R
C
6
3
* V
2
O
(0.97 cm
= 0.8V * (1 + R
VIN
VDD
PG
EN
SYNC
PGND
SGND
TOP VIEW
EL7531
EL7531
2
) footprint for the complete 1A
1
VO
/ R
LX
FB
2
)
100kΩ
124kΩ
1.8µH
L
1
10µF
R
R
2
1
(1.8V @ 1A)
C
*
*
1
EL7531
FN7428.9
470pF
C
4
V
O

Related parts for EL7531IYZ-T7

EL7531IYZ-T7 Summary of contents

Page 1

... BEAAA 7” MSOP EL7531IY-T13 BEAAA 13” MSOP EL7531IYZ BHAAA - 10 Ld MSOP (Note) (Pb-free) EL7531IYZ-T7 BHAAA 7” MSOP (Note) (Pb-free) EL7531IYZ-T13 BHAAA 13” MSOP (Note) (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 ...

Page 2

Absolute Maximum Ratings ( SGND . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6. ...

Page 3

Pin Descriptions PIN NUMBER PIN NAME 1 SGND Negative supply for the controller stage 2 PGND Negative supply for the power stage 3 LX Inductor drive pin; high current digital output with average voltage equal to the regulator output voltage ...

Page 4

Performance Curves and Waveforms All waveforms are taken 3.3V noted. 100 ...

Page 5

Performance Curves and Waveforms All waveforms are taken 3.3V noted. 0. -0.1% -0.2% -0. 3. -0.4% -0.5% -0.6% ...

Page 6

Performance Curves and Waveforms All waveforms are taken 3.3V noted. 200µs/DIV FIGURE 13. START- 2µs/DIV FIGURE 15. PFM STEADY-STATE OPERATION WAVEFORM (I = 100mA) O 0.2µs/DIV FIGURE 17. EXTERNAL SYNCHRONIZATION TO 2MHz ...

Page 7

Performance Curves and Waveforms All waveforms are taken 3.3V noted. 100µs/DIV FIGURE 19. LOAD TRANSIENT RESPONSE (22mA to 1A) 50µs/DIV FIGURE 21. PWM LOAD TRANSIENT RESPONSE (0.25A TO 0.75A) I =50mA O 2µs/DIV FIGURE ...

Page 8

Performance Curves and Waveforms All waveforms are taken 3.3V noted. JEDEC JESD51-3 LOW EFFECTIVE THERMAL CONDUCTIVITY TEST BOARD 0.6 486mW 0.5 0.4 0.3 0.2 0 AMBIENT TEMPERATURE (°C) FIGURE ...

Page 9

Applications Information Product Description The EL7531 is a synchronous, integrated FET 1A step-down regulator which operates from an input of 2.5V to 5.5V. The output voltage is user-adjustable with a pair of external resistors. When the load is very light, ...

Page 10

Thermal Shut-Down Once the junction reaches about 145°C, the regulator shuts down. Both the P channel and the N channel MOSFETs turn off. The output voltage will drop to zero. With the output MOSFETs turned off, the regulator will soon ...

Page 11

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

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