CM3718
1.5A L
OW
-N
OISE
PWM S
TEP
-D
OWN
R
EGULATOR
ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are those values beyond which the
device could be permanently damaged.
PVIN/VIN ………….....................................….......-0.3V to 6.0V
Voltage on Any Other Pin ………... GND – 0.3V to VIN + 0.3V
Output Current, Source or Sink ……......…………........…...1.5A
Junction Temperature ...…………………… …………150°C
Storage Temperature ……................……. -65°C to 125°C
Lead Temperature (Soldering, 5 sec)……………….. 260°C
Thermal Dissipation(
θ
JC
)….. ………………….. .50°C/W
OPERATING CONDITIONS
Temperature Range ............................. -40°C to 85°C
P
VIN
Operating Range .........................2.0V to 4.0V
ELECTRICAL CHARACTERISTICS
(Unless otherwise stated, these specifications apply T
A
=25
°C
;
VIN=+3.3V and PVIN=+3.3V)
maximum ratings are stress ratings only and functional device operation is not implied.
(Note 1)
Symbol
SWITCHING REGULATOR
Parameter
Test Conditions
CM3718
Min.
Typ.
Max.
Unit
V
REF
fsw
I
OUT(RMS)
I
OUT(PEAK)
MOSFETs
Adjustable Output Voltage
Switching Frequency
Maximum Output RMS Current
Maximum Output Peak Current
Drain to Source on-State Resistance
CM3718
CM3718
CM3718
PVIN=5V
VFB = 1.4V
LC unconnected
VFB = 1.4V
LC unconnected
VREF
1.2
VIN
1.5
3
250
V
MHz
A
A
m
Ω
RDS
(ON)
SUPPLY
I
VIN
I
PVIN
Quiescent Current
220
500
μA
μA
2006/10/11
Rev. 1.6
Champion Microelectronic Corporation
Page 3
CHAMP [ CHAMPION MICROELECTRONIC CORP. ]
