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PDF EL7535 Data sheet ( Hoja de datos )
| Número de pieza | EL7535 | |
| Descripción | Monolithic 350mA Step-Down Regulator | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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®
Data Sheet
July 13, 2006
EL7535
FN7003.5
Monolithic 350mA Step-Down Regulator
The EL7535 is a synchronous, integrated FET 350mA step-
down regulator in a MSOP10 package. The regulator is
internally compensated, which makes it possible to use just
five tiny external components to form a complete DC/DC
converter. The regulator operates with an input voltage
range from 2.5V to 6V, which accommodates supplies of
3.3V, 5V, or a Li-Ion battery source. The output can be
externally set from 0.8V to VIN with a resistive divider.
The EL7535 features PWM mode control. The operating
frequency is typically 1.4MHz. Additional features include
<1µA shut-down current, short-circuit protection, and over-
temperature protection.
The EL7535 is available in the 10 Ld MSOP package and is
specified for operation over the full -40°C to +85°C
temperature range.
Ordering Information
PART NUMBER PART TAPE &
(BRAND) MARKING REEL PACKAGE
PKG.
DWG. #
EL7535IY
www.DataSheet4U.comEL7535IY-T7
a
a
- 10 Ld MSOP MDP0043
7” 10 Ld MSOP MDP0043
EL7535IY-T13 a
13” 10 Ld MSOP MDP0043
EL7535IYZ
(Note)
BAACA
- 10 Ld MSOP MDP0043
(Pb-free)
EL7535IYZ-T7 BAACA
(Note)
7” 10 Ld MSOP MDP0043
(Pb-free)
EL7535IYZ-T13 BAACA
(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
EL7535 (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
• Extremely small 350mA DC/DC converter
• Max height 1.1mm MSOP10 package
• Possibly uses only five tiny external components with fixed
output
• 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
• Cellular phones
• Portable test equipment
• Li-Ion battery powered devices
• Small form factor (SFP) modules
Typical Application Diagram
EL7535
(10 LD MSOP)
TOP VIEW
VS (2.5V to 5.5V)
L1
R3 100Ω
C2 C3
VIN
VDD
LX 1.8µH
C1
10µF
10µF
0.1µF
EL7535
VO
R5 100kΩ
R4 100kΩ
R6
100kΩ
POR
EN
RSI
PGND
SGND
R1*
124kΩ
FB
R2*
100kΩ
C4
470pF
VO (1.8V @ 350mA)
* 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  
Typical Performance Curves
EL7535
100
VIN=5V
95
VO=3.3V
90
85
80
VO=1.8V
VO=2.5V
75
70 VO=1.2V
65
60
0
100 200
300 400
IO (mA)
FIGURE 1. EFFICIENCY
100
VIN=3.3V
95
VO=2.5V
90
85
80 VO=1.8V VO=1.2V
75 VO=1V
70
65
60
0
100 200
300 400
IO (mA)
FIGURE 2. EFFICIENCY
JEDEC JESD51-3 LOW EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
0.6
0.5
0.4
0.3
θJA =20M6S°CO/PW10
0.2
0.1
0
0 25 50 75 85 100 125 150
AMBIENT TEMPERATURE (°C)
FIGURE 3. PACKAGE POWER DISSIPATION vs AMBIENT
TEMPERATURE
JEDEC JESD51-7 HIGH EFFECTIVE THERMAL
CONDUCTIVITY TEST BOARD
1.00
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0
0 25 50 75 85 100 125 150
AMBIENT TEMPERATURE (°C)
FIGURE 4. PACKAGE POWER DISSIPATION vs AMBIENT
TEMPERATURE
Waveforms
All waveforms are taken at VIN = 3.3V, VO = 1.8V, IO = 350mA with component values shown on page 1, unless otherwise noted
VIN
(1V/DIV)
IIN
(0.2A/DIV)
VO
(1V/DIV)
VIN
(2V/DIV)
VO
(2V/DIV)
POR
(2V/DIV)
0.5ms/DIV
FIGURE 5. START-UP 1
5
50ms/DIV
FIGURE 6. START-UP 2
FN7003.5
July 13, 2006
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet EL7535.PDF ] | |
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