UM3502QA Datasheet, PDF (3/13 Pages) Union Semiconductor, Inc. – Low-Profile, 600mA, Synchronous Step-Down Converter with Integrated Inductor

UM3502QA
Absolute Maximum Ratings (Note 1)
Symbol
Parameter
Value
Unit
V_IN, V_OUT
V_EN, V_FB
V_SW
I_SW
T_O
Input and Output Voltages
EN, FB Voltages
SW Voltage
Peak SW Sink and Source Current
Operating Temperature
-0.3 to +6.0
V
-0.3 to V_IN+0.3
V
-0.3 to V_IN+0.3
V
1.5
A
-40 to +85
°C
T_STG Storage Temperature Range
-65 to +150
°C
T_REFLOW
Reflow Temperature,
MSL3 JEDEC J-STD-020C, 10 Sec
260
°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°C, C_IN=4.7μF, C_OUT=10μF, unless otherwise noted)
Symbol
Parameter
Test Conditions
Min Typ Max Unit
V_IN
V_OUT
I_O(max)
I_Q
(Active)
I_Q
(Shutdown)
V_FB
I_FB
f
R_DS(ON)
I_P
Input Voltage Range
Output Voltage Range
Maximum Output Current
Input DC Supply Current
(Active Mode)
Input DC Supply Current
(Shutdown Mode)
Feedback Voltage
FB Input Bias Current
Reference Voltage Line
Regulation
Output Voltage Line
Regulation
Output Voltage Load
Regulation
Oscillator Frequency
R_DS(ON) of P-CH MOSFET
R_DS(ON) of N-CH MOSFET
Internal Inductor DCR
Peak Inductor Current
2.5
5.5
V
0.6
5
V
V_IN≥3V, V_OUT=1.8V 600
mA
V_IN=2.5V, V_OUT=1.8V 300
V_FB=0.6V, I_LOAD=0A
60
μA
V_EN=0V
T_A=-40~85°C
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_FB=0.6V or
V_OUT=100%
V_IN=3.6V,
I_SW=100mA
V_IN=3.6V,
I_SW=-100mA
V_IN=3.0V, V_FB=0.5V
or V_OUT=90%,
Duty Cycle<35%
0.1 1.0 μA
0.5880 0.6000 0.6120
0.5830 0.6000 0.6150
V
±30 nA
0.11 0.40 %/V
0.11 0.40 %/V
0.0015
%/mA
1.2
MHz
0.45 0.55 Ω
0.30 0.40 Ω
0.18 0.23 Ω
0.90 1.20 1.60 A
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http://www.union-ic.com Rev.01 Nov.2015
3/13