Kingbor Technology Co.,Ltd
TEL:(86)0755-26508846 FAX:(86)0755-26509052
KB3426
ELECTRICAL CHARACTERISTICS
The
●
denotes specifications which apply over the full operating temperature range, otherwise specifications are T
A
= 25°C.
V
IN
= 3.6V unless otherwise specified.
SYMBOL
V
RUN
I
RUN
PARAMETER
RUN Threshold
RUN Leakage Current
CONDITIONS
●
●
MIN
0.3
TYP
1
±0.01
MAX
1.5
±1
UNITS
V
µA
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
The KB3426E is guaranteed to meet performance specifications
from 0°C to 70°C. Specifications over the –40°C to 85°C operating
temperature range are assured by design, characterization and correlation
with statistical process controls.
Note 3:
T
J
is calculated from the ambient temperature T
A
and power
dissipation P
D
according to the following formula:
KB3426: T
J
= T
A
+ (P
D
)(250°C/W)
Note 4:
The KB3426 is tested in a proprietary test mode that connects
V
FB
to the output of the error amplifier.
Note 5:
Dynamic supply current is higher due to the gate charge being
delivered at the switching frequency.
TYPICAL PERFORMANCE CHARACTERISTICS
(From Figure1a Except for the Resistive Divider Resistor Values)
Efficiency vs Input Voltage
100
95
90
I
OUT
= 100mA
I
OUT
= 10mA
Efficiency vs Output Current
95
90
85
EFFICIENCY (%)
Efficiency vs Output Current
95
V
OUT
= 1.5V
V
IN
= 2.7V
V
IN
= 4.2V
80
V
IN
= 3.6V
75
70
65
60
0.1
90
85
V
OUT
= 1.2V
V
IN
= 2.7V
EFFICIENCY (%)
85 I
OUT
= 1mA
80
75
70
65
60
55
50
V
OUT
= 1.8V
2
3
4
5
INPUT VOLTAGE (V)
6
I
OUT
= 0.1mA
I
OUT
= 650mA
80
75
70
65
60
0.1
V
IN
= 4.2V
V
IN
= 3.6V
1
10
100
OUTPUT CURRENT (mA)
1000
EFFICIENCY (%)
1
10
100
OUTPUT CURRENT (mA)
1000
Efficiency vs Output Current
100
95
90
EFFICIENCY (%)
Reference Voltage vs
Temperature
0.614
V
IN
= 3.6V
0.609
1.65
1.60
0.604
0.599
0.594
0.589
0.584
–50 –25
1.70
Oscillator Frequency vs
Temperature
V
IN
= 3.6V
V
OUT
= 2.5V
V
IN
= 2.7V
REFERENCE VOLTAGE (V)
V
IN
= 3.6V
FREQUENCY (MHz)
50
25
75
0
TEMPERATURE (°C)
100
125
85
80
75
70
65
60
0.1
1
10
100
OUTPUT CURRENT (mA)
1000
V
IN
= 4.2V
1.55
1.50
1.45
1.40
1.35
1.30
–50 –25
50
25
75
0
TEMPERATURE (°C)
100
125
3
KINGBOR [ KINGBOR TECHNOLOGY CO ]
