BL3406B
1.5 MHz, 800mA Synchronous Buck Converter
Electrical Characteristics
Parameter
(Note 5)
(V
IN
=V
RUN
= 3.6V, TA = 25°C, unless otherwise noted.)
Conditions
MIN
2.5
180
0.1
0.6000
0.6000
0.6000
TYP
MAX
5.5
300
1.0
0.6120
0.6135
0.6150
±30
0.04
1.164
1.746
20
2.5
1.200
1.800
50
7.8
0.04
0.5
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
0.3
1.2
1.2
1.5
0.40
0.35
±0.01
1.1
±0.01
1.8
0.50
0.45
±1
1.30
±1
µA
V
µA
0.4
1.236
1.854
80
13
0.40
Unit
V
µA
µA
V
V
V
nA
%/V
V
V
mV
%
%
%
A
MHz
Input Voltage Range
Input DC Supply Current
Active Mode
V
FB
=0.5V or V
OUT
=90%
Shutdown Mode
V
FB
=0V, V
IN
=4.2V
T
A
= +25°C
Regulated Feedback
T
A
= 0°C ≤ T
A
≤ 85°C
Voltage
T
A
= -40°C ≤ T
A
≤ 85°C
V
FB
Input Bias Current
Reference Voltage Line
Regulation
Regulated Output Voltage
Output Overvoltage
Lockout
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 Current
RUN Threshold
RUN Leakage Current
V
FB
= 0.65V
V
IN
= 2.5V to 5.5V
BL3406B-1.2, -40°C ≤ T
A
≤ 85°C
BL3406B-1.8, -40°C ≤ T
A
≤ 85°C
∆V
OVL
= V
OVL
– V
FB
, Adjustable Version
∆V
OVL
= V
OVL
– V
OUT
, Fixed Version
V
IN
= 2.5V to 5.5V
0.5880
0.5865
0.5850
Note 5:
100% production test at +25°C. Specifications over the temperature range are guaranteed by design and
characterization.
PPMIC BU
BL3406B Rev 1.5
10/2009
www.belling.com.cn
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4
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