XC9128/XC9129
Series
■ELECTRICAL
CHARACTERISTICS (Continued)
●XC9128/XC9129
Series (Continued)
PARAMETER
EN "H" Voltage
SYMBOL
V
ENH
CONDITIONS
V
IN
=V
OUT
=3.3V, V
FO
=0V
(*8)
Voltage to start oscillation during
V
FB
=0.45×0.9, V
EN
= 0.2V→0.65V
V
IN
= V
OUT
=3.3V, V
FO
=0V
(*8)
EN "L" Voltage
V
ENL
Voltage to stop oscillation during
V
FB
=0.45×0.9,
V
EN
= 0.65V→0.2V
R
L
=330Ω, Voltage operates at PWM control
R
L
=330Ω, Voltage operates at PFM control
V
IN
= V
OUT
=3.3V, V
FO
=0V
Voltage to start oscillation during V
AEN/
= 0.9V→0.7V
V
IN
=V
OUT
=V
FB
=V
EN
=6.0V
V
IN
=V
OUT
=V
FB
=6.0V, V
EN
=0V
V
IN
=V
OUT
=V
FB
=V
MODE
=6.0V
V
IN
=V
OUT
=V
FB
=6.0V, V
MODE
=0V
V
IN
=V
OUT
=V
FB
=V
AEN/
=6.0V
V
IN
=V
OUT
=6.0V, V
EN
=0V, V
AEN/
=0V
V
IN
=V
OUT
=V
FB
=6.0V
V
IN
=V
OUT
=6.0V, V
FB
=0V
-
-
0.2
V
④
MIN.
0.65
TYP.
-
MAX.
6.0
Topr=25
o
C
UNITS
V
CIRCUIT
④
MODE "H" Voltage
MODE "L" Voltage
AEN/ Voltage
(*7)
EN "H" Current
EN "L" Current
MODE "H" Current
MODE "L" Current
AEN/ "H" Current
(*7)
AEN/ "L" Current
(*7)
FB "H" Current
FB "L" Current
Test Conditions:
V
MODEH
V
MODEL
V
AEN/
I
ENH
I
ENL
I
MODEH
I
MODEL
I
AEN/H
I
AEN/L
I
FBH
I
FBL
0.65
AGND
0.7
-
-0.1
-
-0.1
-
-0.1
-
-0.1
-
-
0.8
-
-
-
-
-
-
-
-
6.0
0.2
0.9
0.1
-
0.1
-
0.1
-
0.1
-
（
*8
）
（
*8
）
V
V
V
μA
μA
μA
μA
μA
μA
μA
μA
①
①
④
②
②
②
②
②
②
②
②
For the Circuit No.1, unless otherwise stated, V
IN
=1.8V, V
EN
=V
MODE
=V
FO
=3.3V, V
AEN/
=0V
For the Circuit No.3, unless otherwise stated, V
IN
=1.8V, V
OUT
=V
EN
=V
MODE
=3.3V, FB=0V
For the Circuit No.2, unless otherwise stated, V
IN
=1.8V, V
FB
=0V, V
EN
=V
MODE
=3.3V, V
AEN/
=0V
For the Circuit No.4, unless otherwise stated, V
IN
=1.8V, V
FB
=0V, V
EN
=V
MODE
=Vpull=V
FO
=3.3V, V
AEN/
=0V
For the Circuit No.5, unless otherwise stated, V
IN
=3.3V, V
AEN/
=0V
For the Circuit No.7, unless otherwise stated, V
EN
=V
MODE
=3.3V
External Components:
（
*8
）
（
*8
）
（
*8
）
For the Circuit No.6, unless otherwise stated, V
EN
=V
MODE
=Vpull=V
FO
=3.3V, V
FB
=0V
For the Circuit No.1, R
FB1
=270kΩ, R
FB2
=43kΩ, C
FB
=12pF, L=4.7μH（LTF5022 TDK）, C
L1
=22μF（ceramic）, C
L2
=10
μF（ceramic）,
C
IN
=10μF（ceramic）
For the Circuit No.2,3, C
IN
=1μF（ceramic）
For the Circuit No.4,6, C
IN
=1μF（ceramic）, Rpull=300Ω
For the Circuit No.5, C
IN
=1μF（ceramic）, C
OUT
=1μF（ceramic）
For the Circuit No.7, C
IN
=1μF（ceramic）, C
OUT
=1μF（ceramic）, SBD =XBS304S17（TOREX）, Rpull=0.5Ω
*
*
*
*
*
*
1 : Designed value
2 : Efficiency ={(output voltage) X (output current)} ÷ {(input voltage) X (input current)} X 100
3 : L
X
SW "P-ch" ON resistance=（V
Lx
-V
OUT
pin test voltage）÷100mA
4 : Testing method of L
X
SW "N-ch" ON resistance is stated at test circuits.
5 : Current flowing through the Nch driver transistor is limited.
6 : The XC9128D/XC9129D series does not have integral latch protection and
V
LVP
function.
This is only available with the XC9128B/XC9129B series.
7 : The XC9129 series does not have FO and AEN/ pins.
8 : The XC9129 series does not have FO and AEN/ pins.
These pins are only available in the XC9128 series.
The AEN/FO functions are only effective for the test of the XC9128 series.
*
*
6/13
TOREX [ TOREX SEMICONDUCTOR ]
