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Renesas Electronics Components Datasheet

EL7534 Datasheet

Monolithic 600mA Step-Down Regulator

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EL7534
Monolithic 600mA Step-Down Regulator
The EL7534 is a synchronous, integrated FET 600mA 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 EL7534 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 EL7534 is available in the 10 Ld MSOP package,
making the entire converter occupy less than 0.15 in2 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.
MARKING REEL PACKAGE DWG. #
EL7534IY
BPAAA
- 10 Ld MSOP MDP0043
EL7534IY-T7 BPAAA
7” 10 Ld MSOP MDP0043
EL7534IY-T13 BPAAA
13” 10 Ld MSOP MDP0043
EL7534IYZ
(Note)
BGAAA
- 10 Ld MSOP MDP0043
(Pb-free)
EL7534IYZ-T7 BGAAA
(Note)
7” 10 Ld MSOP MDP0043
(Pb-free)
EL7534IYZ-T13 BGAAA
(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
EL7534 (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
DATASHEET
FN7431
Rev 8.00
July 12, 2006
Features
• Less than 0.15 in2 (0.97 cm2) footprint for the complete
600mA converter
• Components on one side of PCB
• Max height 1.1 mm 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
EL7534
TOP VIEW
VS (2.5V to 5.5V)
L1
R3 100
C2 C3
VIN
VDD
LX 1.8µH
C1
10µF
10µF
0.1µF
EL7534
VO
R5 100k
R4 100k
R6
100k
POR
EN
RSI
PGND
SGND
R1*
124k
FB
R2*
100k
C4
470pF
VO (1.8V @ 600mA)
* VO = 0.8V * (1 + R1 / R2)
FN7431 Rev 8.00
July 12, 2006
Page 1 of 9


Renesas Electronics Components Datasheet

EL7534 Datasheet

Monolithic 600mA Step-Down Regulator

No Preview Available !

EL7534
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800mA
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 m
45 75 m
1.5 A
145 °C
130 °C
-1 1 µA
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
FN7431 Rev 8.00
July 12, 2006
Page 2 of 9


Part Number EL7534
Description Monolithic 600mA Step-Down Regulator
Maker Renesas
Total Page 9 Pages
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