UM3501_15 Datasheet, PDF (3/11 Pages) Union Semiconductor, Inc. – 600mA, 1.2MHz, Synchronous Step-Down DC-DC Converter

UM3501
Absolute Maximum Ratings (Note 1)
Symbol
Parameter
Value
Unit
V_IN
Input Voltage
-0.3 to +6.0
V
V_EN,V_FB
V_SW
I_SW
EN, FB Voltages
SW Voltage
Peak SW Sink and Source Current
-0.3 to V_IN+0.3
V
-0.3 to V_IN+0.3
V
1.5
A
T_O
Operating Temperature
-40 to +85
°C
T_STG Storage Temperature Range
-65 to +150
°C
Note 1: Stresses greater than those listed under Maximum Ratings may cause permanent damage
to the device. This is a stress rating only and functional operation of the device at these or
any other conditions above those indicated in the operational sections of this specification
is not implied. Exposure to absolute maximum rating conditions for extended periods
may affect reliability.
Electrical Characteristics (Note 2)
(V_IN=V_EN=3.6V, T_A=+25℃, unless otherwise noted)
Symbol
Parameter
Test Conditions
Min
V_IN
I_Q
(Active)
I_Q
(Shutdown)
V_FB
I_FB
I_O(max)
f
R_DS(ON)
I_P
Input Voltage Range
Input DC Supply
Current
(Active Mode)
Input DC Supply
Current
(Shutdown Mode)
Regulated Feedback
Voltage
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
V_FB=0.6V, Iload=0A
V_FB=0V, V_IN=4.2V
T_A= +25ºC
0ºC ≤T_A ≤ 85ºC
-40ºC ≤T_A ≤ 85ºC
V_FB=0.65V
2.5V≤ V_IN ≤ 5.5V,
V_OUT=V_FB
(R2=0)
2.5V≤ V_IN ≤ 5.5V,
I_OUT=10mA
100mA≤I_OUT≤600mA
V_IN=3.6V, V_OUT=1.8V
V_FB=0.6V or
V_OUT=100%
V_IN =3.6V,
I_SW=100mA
V_IN =3.6,
I_SW= -100mA
V_IN=3.0V,
V_FB=0.5V or
V_OUT=90%,
Duty Cycle<35%
2.5
0.5880
0.5865
0.5850
600
0.90
Typ
Max Unit
5.5
V
50
μA
0.08
1.0
μA
0.6000 0.6120
0.6000 0.6135 V
0.6000 0.6150
±30
nA
0.11
0.40 %/V
0.11
0.0015
1.2
0.40
0.35
0.40 %/V
%/mA
mA
MHz
0.50
Ω
0.45
Ω
1.20
1.90
A
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http://www.union-ic.com Rev.06 Feb.2015
3/11