ELECTRICAL CHARACTERISTICS
ELECTRICAL PERFORMANCE CURVES
ELECTRICAL PERFORMANCE CURVES
100
80
Efficiency
(%)
60
40
20
0
0.1
1
V
IN
=2.7V
V
IN
=3.6V
V
IN
=5.5V
V
EN
(10V/DIV)
Time: 500µs/DIV
V
OUT
(200mV/DIV)
I
L
(200mA/DIV)
10
I
LOAD
(mA)
100
1000
Figure 7. Start-up Response
I
LOAD
= 0mA, V
OUT
=1.2V
Figure 4. Efficiency vs. Load Current
V
IN
= 3.6V, V
OUT
= 1.2V, T
A
=25
o
C
0.4
Line Regulation
(%)
0.0
-0.4
-0.8
-1.2
3
4
V
IN
(V)
5
I
LOAD
=0mA
I
LOAD
=100mA
I
LOAD
=600mA
Time: 100µs/DIV
V
OUT
(1V/DIV)
V
SW
(2V/DIV)
I
L
(100mA/DIV)
Figure 8. Sleepy Z-mode Switching Waveforms
V
IN
= 3.6V, V
OUT
= 1.2V and I
LOAD
= 1.0mA
Figure 5. Line Regulation
V
IN
is 2.7V to 5.5V and V
OUT
is 1.2V
1
Load Regulation
(%)
0
-1
-2
-3
-4
0.0
V
IN
=2.7V
V
IN
=3.6V
V
IN
=5.5V
Time: 2µs/DIV
V
OUT
(1V/DIV)
V
SW
(2V/DIV)
0.2
I
LOAD
(A)
0.4
0.6
I
L
(100mA/DIV)
Figure 6. Load Regulation
1.0mA < I
LOAD
< 600mA, V
OUT
= 1.2V
Figure 9. Z-mode Switching Waveforms
V
IN
= 3.6V, V
OUT
= 1.2V and I
LOAD
= 10mA
MC34727
8
Analog Integrated Circuit Device Data
Freescale Semiconductor
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
