YB1680 Datasheet, PDF (3/10 Pages) YOBON TECHNOLOGIES,INC. – 1.5MHz, 600mA Synchronous Step-Down Converter

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
Symbol
Test Conditions
MIN TYP
MAX Units
Input Voltage Range
Input DC Supply Current
Active Mode
Shutdown Mode
Regulated Feedback Voltage
V_FB Input Bias Current
V_IN
I_Q
V_FB = 0.5V
V_FB = 0V, V_IN = 4.2V
T_A = +25℃
V_FB T_A = 0℃ ≦ T_A ≦ 85℃
T_A = -40℃ ≦ T_A ≦ 85℃
I_FB
V_FB = 0.65V
2.5
5.5
V
270
400
μA
0.08 1.0
0.5880 0.6000 0.6120
0.5865 0.6000 0.6135 V
0.5850 0.6000 0.6150
±30
nA
Reference Voltage Line
Regulation
V_FB = 2.5V to 5.5V,
V_OUT = V_FB (R2=0)
0.11 0.63 %/V
Output Voltage Line Regulation
V_IN = 2.5V to 5.5V, I_OUT = 10mA
0.11 0.63 %/V
Output Voltage Load Regulation
I_OUT from 0 to 600mA
0.0015
%/mA
Maximum Output Current
V_IN = 3.0V
600
mA
Oscillator Frequency
F_OSC V_FB = 0.6V or V_OUT = 100%
1.2
1.5
1.8 MHz
R_DS(ON) of P-CH MOSFET
I_SW = 300mA
0.30 0.50
Ω
R_DS(ON) of N-CH MOSFET
I_SW = -300mA
0.20 0.45
Ω
Peak Inductor Current
V_IN = 3V, V_FB = 0.5V or
V_OUT = 90%
Duty Cycle < 35%
1.20
A
SW Leakage
V_RUN = 0V, V_SW = 0V or 5V,
V_IN = 5V
±0.01 ±1
μA
Output Over Voltage Lockout
EN Threshold
EN Leakage Current
ΔV_OVL = V_OVL - V_FB
V_EN -40℃ ≦ T_A ≦ 85℃
I_EN
60
mV
0.3 0.45 1.30
V
±0.1
±1
μA
YB1680 Rev.1.0
www.yobon.com.tw
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