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Intersil Electronic Components Datasheet

EL7536 Datasheet

Monolithic 1A Step-Down Regulator

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NOTPROESCSOIBMLMEESNUDIBSESL®DT97FIT5OU3RT6ENDEPaWRtaODDSEUhSeCIGeTtNS
Monolithic 1A Step-Down Regulator
The EL7536 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 VIN with a resistive
divider.
The EL7536 features PWM mode control. The operating
frequency is typically 1.4MHz. Additional features include a
100ms Power-On-Reset output, <1µA shut-down current,
short-circuit protection, and over-temperature protection.
The EL7536 is available in the 10 Ld MSOP package,
making the entire converter occupy less than 0.15in2 of PCB
area with components on one side only. Both packages are
specified for operation over the full -40°C to +85°C
temperature range.
Ordering Information
PART NUMBER PART TAPE &
PKG.
(BRAND)
MARKING REEL PACKAGE DWG. #
EL7536IY
BDAAA
- 10 Ld MSOP MDP0043
EL7536IY-T7 BDAAA
7” 10 Ld MSOP MDP0043
EL7536IY-T13 BDAAA
13” 10 Ld MSOP MDP0043
EL7536IYZ
(Note)
BFAAA
- 10 Ld MSOP MDP0043
(Pb-free)
EL7536IYZ-T7 BFAAA
(Note)
7” 10 Ld MSOP MDP0043
(Pb-free)
EL7536IYZ-T13 BFAAA
(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
EL7536 (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
July 13, 2006
EL7536
FN7396.8
Features
• Less than 0.15in2 (0.97cm2) footprint for the complete 1A
converter
• Components on one side of PCB
• Max height 1.1mm MSOP10
• 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
• Cellular phones
• Portable test equipment
• Li-Ion battery powered devices
• Small form factor (SFP) modules
Typical Application Diagram
EL7536
TOP VIEW
VS (2.5V to 5.5V)
L1
R3 100Ω
VIN
VDD
LX 1.8µH
C1
10µF
C2 C3
10µF
0.1µF
EL7536
VO
R5 100kΩ
R4 100kΩ
R6
100kΩ
POR
EN
RSI
PGND
SGND
R1*
124kΩ
FB
R2*
100kΩ
C4
470pF
VO (1.8V @ 1A)
* 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. 2003-2006. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.


Intersil Electronic Components Datasheet

EL7536 Datasheet

Monolithic 1A Step-Down Regulator

No Preview Available !

EL7536
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2A
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.
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
IFB
VIN, VDD
VIN,OFF
VIN,ON
IDD
Feedback Input Voltage
Feedback Input Current
Input Voltage
Minimum Voltage for Shutdown
Maximum Voltage for Startup
Supply Current
RDS(ON)-PMOS PMOS FET Resistance
RDS(ON)-NMOS NMOS FET Resistance
ILMAX
Current Limit
TOT,OFF
Over-temperature Threshold
TOT,ON
Over-temperature Hysteresis
IEN, IRSI
EN, RSI Current
VEN1, VRSI1 EN, RSI Rising Threshold
VEN2, VRSI2 EN, RSI Falling Threshold
VPOR
Minimum VFB for POR, WRT Targeted
VFB Value
VOLPOR
POR Voltage Drop
AC CHARACTERISTICS
VIN falling
VIN rising
PWM, VIN = VDD = 5V
EN = 0, VIN = VDD = 5V
VDD = 5V, wafer test only
VDD = 5V, wafer test only
T rising
T falling
VEN, VRSI = 0V and 3.3V
VDD = 3.3V
VDD = 3.3V
VFB rising
VFB falling
ISINK = 5mA
790 800 810 mV
250 nA
2.5 5.5 V
2 2.2 V
2.2 2.4 V
400 500
µA
0.1 1 µA
70 100 mΩ
45 75 mΩ
1.5 A
145 °C
130 °C
-1 1 V
2.4 V
0.8 V
95 %
86 %
35 70 mV
FPWM
tRSI
tSS
tPOR
PWM Switching Frequency
Minimum RSI Pulse Width
Soft-start Time
Power On Reset Delay Time
Guaranteed by design
1.4 1.5 1.75 MHz
25 50 ns
650 µs
80 100 120 ms
2 FN7396.8
July 13, 2006


Part Number EL7536
Description Monolithic 1A Step-Down Regulator
Maker Intersil Corporation
Total Page 9 Pages
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