YB1680
1.5MHz, 600mA Synchronous Step-Down Converter
Absolute Maximum Ratings
Input Supply Voltage ................... -0.3V to 6V
EN, V
FB
Voltage ................ -0.3V to V
IN
+0.3V
SW, V
OUT
Voltage.............. -0.3V to V
IN
+0.3V
Peak SW Sink and Source Current........1.5A
Operating Temperature Range.. -40°C to 85°C
Junction Temperature ....................... 125°C
Storage Temperature Range ... -65°C to 150°C
Lead Temperature (Soldering, 10s) .. 300°C
Electrical Characteristics
Table 2
(V
IN
= V
RUN
= 3.6V, T
A
=25°C, Test Circuit Figure 1, unless otherwise noted.)
Description
Input Voltage Range
Input DC Supply Current
Active Mode
Shutdown Mode
Symbol
V
IN
I
Q
V
FB
= 0.5V
V
FB
= 0V, V
IN
= 4.2V
T
A
= +25℃
Regulated Feedback Voltage
V
FB
T
A
= 0℃
≦
T
A
≦
85℃
T
A
= -40℃
≦
T
A
≦
85℃
V
FB
Input Bias Current
Reference Voltage Line
Regulation
Output Voltage Line Regulation
Output Voltage Load Regulation
Maximum Output Current
Oscillator Frequency
R
DS(ON)
of P-CH MOSFET
R
DS(ON)
of N-CH MOSFET
Peak Inductor Current
F
OSC
I
FB
V
FB
= 0.65V
V
FB
= 2.5V to 5.5V,
V
OUT
= V
FB
(R2=0)
V
IN
= 2.5V to 5.5V, I
OUT
= 10mA
I
OUT
from 0 to 600mA
V
IN
= 3.0V
V
FB
= 0.6V or V
OUT
= 100%
I
SW
= 300mA
I
SW
= -300mA
V
IN
= 3V, V
FB
= 0.5V or
V
OUT
= 90%
Duty Cycle < 35%
V
RUN
= 0V, V
SW
= 0V or 5V,
V
IN
= 5V
ΔV
OVL
= V
OVL
- V
FB
V
EN
I
EN
-40℃
≦
T
A
≦
85℃
0.3
600
1.2
1.5
0.30
0.20
1.20
1.8
0.50
0.45
0.11
0.11
0.0015
0.5880
0.5865
0.5850
Test Conditions
MIN
2.5
270
0.08
0.6000
0.6000
0.6000
TYP
MAX
5.5
400
1.0
0.6120
0.6135
0.6150
±30
0.63
0.63
nA
%/V
%/V
%/mA
mA
MHz
Ω
Ω
A
V
Units
V
μA
SW Leakage
Output Over Voltage Lockout
EN Threshold
EN Leakage Current
±0.01
60
0.45
±0.1
±1
μA
mV
1.30
±1
V
μA
YB1680 Rev.1.0
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