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參數(shù)資料
| 型號(hào)： | CM3728 |
| 英文描述： | 2.5G/3G Cellular Phone Buck Regulator|Battery Management ICs |
| 中文描述： | 能工作蜂窩電話降壓穩(wěn)壓器|電池管理IC |
| 文件頁數(shù)： | 3/11頁 |
| 文件大?。?/td> | 267K |
| 代理商： | CM3728 |
CM3728
2.5G/3G C
ELLULAR
P
HONE
B
UCK
R
EGULATOR
ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are those values beyond which the
device could be permanently damaged.
2002/09/30
Rev. 1.0
Champion Microelectronic Corporation
Page 3
Junction Temperature ...…………………… …………150°C
Storage Temperature ……................……. -65°C to 125°C
BATT ………….........................................….......-0.3V to 4.0V
Voltage on Any Other Pin ………... GND – 0.3V to VCC + 0.3V
Output Current, Source or Sink ……......…………........…...1.5A
OPERATING CONDITIONS
Temperature Range ............................. -40°C to 85°C
P
VDD
Operating Range .........................2.0V to 4.0V
ELECTRICAL CHARACTERISTICS
(Unless otherwise stated, these specifications apply T
A
=25
°C
;
BATT=+3.3V and PVDD=+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
CM3728
Typ.
Symbol
Parameter
Test Conditions
Min.
Max.
Unit
SWITCHING REGULATOR
Z
IN
VREF Reference Pin Input Impedance
50
K
Ω
fsw
Switching Frequency
Maximum Output RMS Current
Maximum Output Peak Current
CM3728
CM3728
CM3728
1.1
MHz
A
A
I
OUT(RMS)
I
OUT(PEAK)
MOSFETs
1.5
3
RDS
(ON)
SUPPLY
Drain to Source on-State Resistance
PVDD=5V
250
m
Ω
I
BATT
Quiescent Current
VFB = 1.4V
LC unconnected
VFB = 1.4V
LC unconnected
220
μA
I
PVDD
500
μA
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