Kingbor Technology Co.,Ltd
TEL:(86)0755-26508846 FAX:(86)0755-26509052
KB3426
TYPICAL PERFORMANCE CHARACTERISTICS
(From Figure1a Except for the Resistive Divider Resistor Values)
Oscillator Frequency vs
Supply Voltage
1.8
OSCILLATOR FREQUENCY (MHz)
Output Voltage vs Load Current
1.844
1.834
V
IN
= 3.6V
R
DS(ON
) vs Input Voltage
0.7
0.6
0.5
R
DS(ON)
( )
1.7
OUTPUT VOLTAGE (V)
1.824
1.814
1.804
1.794
1.784
1.774
1.6
1.5
1.4
1.3
1.2
0.4
0.3
0.2
0.1
0
0
1
MAIN
SWITCH
SYNCHRONOUS
SWITCH
2
3
4
5
SUPPLY VOLTAGE (V)
6
0
100 200 300 400 500 600 700 800 900
LOAD CURRENT (mA)
5
4
2
3
INPUT VOLTAGE (V)
6
7
R
DS(ON)
vs Temperature
0.7
V
IN
= 2.7V
0.6
V
IN
= 4.2V
0.5
R
DS(ON)
( )
Supply Current vs Supply Voltage
50
45
40
SUPPLY CURRENT (µA)
SUPPLY CURRENT (µA)
Supply Current vs Temperature
50
V
IN
= 3.6V
45 V
OUT
= 1.8V
= 0A
I
40
LOAD
V
OUT
= 1.8V
I
LOAD
= 0A
V
IN
= 3.6V
35
30
25
20
15
10
35
30
25
20
15
10
5
0.4
0.3
0.2
0.1
0
–50 –25
MAIN SWITCH
SYNCHRONOUS SWITCH
50
25
75
0
TEMPERATURE (°C)
100
125
5
0
2
4
3
5
SUPPLY VOLTAGE (V)
6
0
–50 –25
50
25
0
75
TEMPERATURE (°C)
100
125
Switch Leakage vs Temperature
300
V
IN
= 5.5V
RUN = 0V
250
SWITCH LEAKAGE (nA)
Switch Leakage vs Input Voltage
120
100
SWITCH LEAKAGE (pA)
80
60
40
20
0
SYNCHRONOUS
SWITCH
RUN = 0V
SW
5V/DIV
V
OUT
100mV/DIV
AC COUPLED
I
L
200mA/DIV
Burst Mode Operation
200
150
100
50
0
–50 –25
MAIN SWITCH
SYNCHRONOUS SWITCH
50
25
75
0
TEMPERATURE (°C)
100
125
MAIN
SWITCH
V
IN
= 3.6V
V
OUT
= 1.8V
I
LOAD
= 50mA
0
1
2
3
4
INPUT VOLTAGE (V)
5
6
4µs/DIV
4
KINGBOR [ KINGBOR TECHNOLOGY CO ]
