![](http://datasheet.mmic.net.cn/340000/CM3708A_datasheet_16464050/CM3708A_3.png)
CM3708A
3A L
OW
-N
OISE
PWM S
TEP
-D
OWN
R
EGULATOR
ORDERING INFORMATION
Part Number
Temperature Range
Package
CM3708AIT
-40
℃
to 85
℃
16-Pin PTSSOP (PT16)
CM3708AGIT*
-40
℃
to 85
℃
16-Pin PTSSOP (PT16)
CM3708AIS
-40
℃
to 85
℃
16-Pin PSOP (PS16)
CM3708AGIS*
-40
℃
to 85
℃
16-Pin PSOP (PS16)
*Note:
G : Suffix for Pb Free Product
ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are those values beyond which the
device could be permanently damaged.
Junction Temperature ...…………………… …………150°C
Storage Temperature ……................……. -65°C to 125°C
PVIN/VIN …………......................................….......-0.3V to 6.0V
Voltage on Any Other Pin ………... GND – 0.3V to VIN + 0.3V
Output Current, Source or Sink ……......…………........…...3.0A
OPERATING CONDITIONS
Temperature Range ............................. -40°C to 85°C
P
VIN
Operating Range .........................2.0V to 5.0V
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)
Lead Temperature (Soldering, 5 sec)……………….. 260°C
Thermal Dissipation
(
θ
JC
)….. ………………….. .50°C/W
CM3708A
Typ.
Symbol
Parameter
Test Conditions
Min.
Max.
Unit
SWITCHING REGULATOR
V
REF
fsw
I
OUT(RMS)
I
OUT(PEAK)
I
limit
MOSFETs
RDS
(ON)
SUPPLY
Adjustable Output Voltage
Switching Frequency
Maximum Output RMS Current
Maximum Output Peak Current
Current limit
0
VIN
660
3.0
6.0
V
CM3708A
CM3708A
CM3708A
CM3708A
480
KHz
A
A
A
6
Drain to Source on-State Resistance
PVIN=5V
150
180
m
Ω
I
VIN
Quiescent Current
VFB = 1.4V
LC unconnected
VFB = 1.4V
LC unconnected
200
μA
I
PVIN
Quiescent Current
500
μA
Note 1:
Limits are guaranteed by 100% testing, sampling, or correlation with worst case test conditions
Note 2:
VIN, PVIN = 3.3V ±10%
Note 3:
It’s not 100% test
2004/12/13 Champion Microelectronic Corporation
Page 3