CM3706 Datasheet, PDF (4/11 Pages) Champion Microelectronic Corp. – 1.5MHz, 600mA Synchronous Step-Down Regulator

CM3706
1.5MHz, 600mA Synchronous
Step-Down Regulator
Thermal Resistance ^{(Note 3)}:
Package
TSOT23-5
Ó¨_JA
250°C/W
Ó¨_JC
110°C/W
Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
Note 2: TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formula:
CM3706: TJ = TA + (PD)╳(Ө_JA)
Note 3: Thermal Resistance is specified with approximately 1 square of 1 oz copper.
ELECTRICAL CHARACTERISTICS (Unless otherwise stated, these specifications apply T_A=25°C;
VIN=+3.6V) maximum ratings are stress ratings only and functional device operation is not implied.
Parameter
Conditions
Input Voltage Range
Input DC Supply Current
Active Mode
V_FB=0.5V
Shutdown Mode
V_FB=0V, V_IN=4.2V
T_A = +25°C
Regulated Feedback Voltage T_A= 0°C ≤ T_A ≤ 85°C
T_A= -40°C ≤ T_A ≤ 85°C
V_FB Input Bias Current
V_FB = 0.65V
Reference Voltage Line
Regulation
Regulated Output Voltage
Output Voltage Line
Regulation
Output Voltage Load
Regulation
Peak Inductor Current
Oscillator Frequency
R_DS(ON) of P-CH MOSFET
V_IN = 2.5V to 5.5V,
CM3706-1.2, -40°C ≤ T_A ≤ 85°C
CM3706-1.5, -40°C ≤ T_A ≤ 85°C
CM3706-1.8, -40°C ≤ T_A ≤ 85°C
VIN = 2.5V to 5.5V,IOUT=10mA
IOUT from 10 to 600mA
V_IN=3V, V_FB=0.5V or V_OUT=90%
Duty Cycle <35%
V_FB=0.6V or V_OUT=100%
I_SW = 300mA
R_DS(ON) of N-CH MOSFET
I_SW = -300mA
MIN TYP MAX unit
2.5
5.5
V
270 400
µA
0.08 1.0
µA
0.5880 0.6000 0.6120 V
0.5865 0.6000 0.6135 V
0.5850 0.6000 0.6150 V
±30
nA
0.11 0.4 %/V
1.164 1.200 1.236 V
1.455 1.500 1.545 V
1.746 1.800 1.854 V
0.11 0.40 %/V
0.0015
%/mA
1.2
A
1.2
1.5
1.8 MHz
0.3 0.50
Ω
0.2 0.45
Ω
SW Leakage
RUN Threshold
RUN Leakage Current
Thermal Shutdown Trip
Threshold
Output over voltage lockout
VRUN = 0V, VSW= 0V or 5V, VIN = 5V
-40°C ≤ T_A ≤ 85°C
∆VOVL = VOVL – VFB
±0.01 ±1
µA
0.3 0.45 1.5
V
±0.1 ±1
µA
150
℃
60
mV
Note 4: 100% production test at +25°C. Specifications over the temperature range are guaranteed by design and
characterization.
2006/12/20Rev. 1.6
Champion Microelectronic Corporation
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