CM3706
1.5MHz, 600mA Synchronous
Step-Down Regulator
Thermal Resistance
(Note 3)
:
Package
TSOT23-5
Ө
JA
250°C/W
Ө
JC
110°C/W
Note 1:
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
Note 2:
T
J
is calculated from the ambient temperature T
A
and power dissipation P
D
according to the following formula:
CM3706: T
J
= T
A
+ (P
D
)
╳
(
Ө
JA
)
Note 3:
Thermal Resistance is specified with approximately 1 square of 1 oz copper.
ELECTRICAL CHARACTERISTICS
Parameter
Input Voltage Range
Input DC Supply Current
Active Mode
Shutdown Mode
(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.
Conditions
MIN
2.5
TYP
MAX
5.5
unit
V
µA
µA
V
V
V
nA
%/V
V
V
V
%/V
%/mA
A
V
FB
=0.5V
V
FB
=0V, V
IN
=4.2V
0.5880
0.5865
0.5850
270
0.08
0.6000
0.6000
0.6000
400
1.0
0.6120
0.6135
0.6150
±30
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
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
R
DS(ON)
of N-CH MOSFET
SW Leakage
RUN Threshold
RUN Leakage Current
Thermal Shutdown Trip
Threshold
Output over voltage lockout
V
FB
= 0.65V
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
0.11
1.164
1.455
1.746
1.200
1.500
1.800
0.11
0.0015
1.2
1.2
1.5
0.3
0.2
±0.01
0.3
0.45
±0.1
150
0.4
1.236
1.545
1.854
0.40
VIN = 2.5V to 5.5V,I
OUT
=10mA
I
OUT
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
I
SW
= -300mA
V
RUN
= 0V, V
SW
= 0V or 5V, V
IN
= 5V
-40°C
≤
T
A
≤
85°C
1.8
0.50
0.45
±1
1.5
±1
MHz
Ω
Ω
µA
V
µA
℃
mV
∆V
OVL
= V
OVL
– V
FB
60
Note 4:
100% production test at +25°C. Specifications over the temperature range are guaranteed by design and
characterization.
2006/12/20
Rev. 1.6
Champion Microelectronic Corporation
Page 4
CHAMP [ CHAMPION MICROELECTRONIC CORP. ]
