UM3506QA Datasheet, PDF (4/9 Pages) Union Semiconductor, Inc. – Synchronous Step-Down Converter

UM3506QA
Typical Performance Characteristics
(V_IN=3.6V, V_OUT=1.8V, C_IN=4.7μF, C_OUT=10μF, T_A=+25°C, unless otherwise noted.)
100
90
80
70
60
50
40
30
20
10
0
1
Efficiency vs. Load Current
V_VI_IN_N=₌2₂._.5₅V_V
V_VI_IN_N=₌3₃._.6₆V_V
VV_VII_INN_N==₌45₄.._.25₂VV_V
VIN=5.5V
10
100
Output Current (mA)
1000
100
90
80
70
60
50
40
30
20
10
0
2.5
Efficiency vs. Input Voltage
IIILLL^IIIOOO^LLLOOOAAA^AAADDD^DDD======²⁴⁶246⁰⁰⁰000⁰⁰⁰000^mmmmmm^AAAAAA
3.5
4.5
5.5
Input Voltage (V)
Output Voltage vs. Load Current
1.81
Output Voltage vs. Input Voltage
1.810
1.805
1.80
1.800
1.79
1.795
1.78
1.790
1.77
1.76
1.75
1
1.785
VVV_VVVIIINNN_III===_NNN234₌₌₌...₂₃₄562_...VVV_562VVV
10
100
Output Current (mA)
1000
1.780
1.775
1.770
2.5
ILIO_LOA_ADD==220000mmAA
ILIOLOAADD==440000mmAA
IL^IOLOAADD⁼=⁶6⁰0⁰0^mm^AA
3.5
4.5
5.5
Input Voltage(V)
Supply Current vs. Input Voltage
80
70
60
50
40
30
20
10
2.5
3
3.5
4
4.5
5
5.5
Supply Voltage(V)
Start-up from Shutdown
(I_OUT=300mA)
VOUT
1V/div
VEN
1V/div
20µs/div
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http://www.union-ic.com Rev.01 Oct.2016
4/9