XC6376/6377
Series
■Electrical Characteristics
XC6376A333SR, XC6377A333SR
PARAMETER
Output Voltage
Output Voltage2
Maximum Input Voltage
Maximum Output Current
Input Current
Supply Current
(oscillation stopped)
Stand-by Current
Lx SW ON Resistance
SYMBOL
V
OUT
1
V
OUT
2
V
IN
I
OUT
MAX
I
IN
I
DD
I
STB
R
SWON
I
LXL
F
OSC
MAXDTY
PFMDTY
EFFI
V
UVLO
Tss
T
PRO
V
CEH
V
CEL
Only C
SS
connected, V
IN
= output programmed voltage x 1.2,
Time taken for CE to become "L" when V
OUT
changes to 0V
Only C
SS
connected, V
IN
= output programmed voltage x 1.2,
V
OUT
=0V, Apply voltage to CE and measure EXT/1,2 "L"
Only C
SS
connected, V
IN
= output programmed voltage x 1.2,
V
OUT
=0V, Apply voltage to CE and measure EXT/1,2 "H"
Only C
SS
connected, V
IN
= output programmed voltage x 1.2,
CE=0V, V
OUT
=V
IN
, EXT/1,2 pull down to 200Ω,
V
EXT
/1,2=V
IN
- 0.4V
Only C
SS
connected, V
IN
= output programmed voltage x 1.2,
CE=V
IN
, V
OUT
=output programmed voltage x 0.9,
EXT/1,2 pull up to 200Ω, V
EXT
/1,2=0.4V
35
External components connected,
V
IN
=output programmed voltage x 1.2,
External components connected,
V
IN
=V
OUT
x 1.05, No load.
XC6376
XC6377
(V
OUT
=3.3V, F
OSC
=300kHz)
CONDITIONS
External components connected, V
IN
=output programmed
voltage x 1.2, I
OUT
=132mA
External components connected, V
IN
=output programmed
voltage x 1.6, (when V
IN
≤
3.0V, V
IN
=3.0V)
MIN
TYP
Ta=25:
MAX UNITS
V
V
V
mA
1.480 2.190
55
26
1.5
0.64
86
39
2.5
0.85
2.0
255
100
15
300
345
mA
µA
µA
µA
Ω
µA
kHz
%
%
%
1.8
10.0
5.0
16.0
8.0
V
msec
msec
V
0.20
47
V
Ω
3.218 3.300 3.383
V
OUT
1
-0.5%
10
600
V
OUT
1
+1.5%
Only C
SS
connected, V
IN
= output programmed voltage x 1.2,
V
OUT
= V
IN
, V
LX
=V
IN
Same as I
DD
. CE=0V
Same as I
DD
except V
OUT
=output programmed voltage x0.9,
V
LX
=V
IN
-0.2V, pull down LX to 10Ω, CE=V
IN
Same as I
STB
except V
LX
=0V
External components connected, measuring of EXT/1
waveform, V
IN
=V
OUT
1 +0.3V, I
OUT
=20mA
External components connected, No load.
Same as V
OUT
1
Only C
SS
connected, V
IN
= output programmed voltage x 0.9,
CE= V
IN
, LX OFF voltage when V
IN
drops.
0.9
6.0
3.0
0.65
5
Lx Leak Current
Oscillator Frequency
(Note1)
Maximum Duty Ratio
PFM Duty Ratio (Note2)
Efficiency (Note3)
Minimum Operating Voltage
(UVLO Voltage)
Soft-Start Time
Circuit Protect Integration Time
CE "High" Voltage
CE "Low" Voltage
25
95
35
EXT/1,2 "H" ON Resistance
R
EXTBH
EXT/1,2 "L" ON Resistance
R
EXTBL
29
37
Ω
Note 1: Refers to the oscillation frequency during PWM control.
Note 2: Applies to the XC6377 series only (duty ratio when control changes to PFM)
Note 3: EFFI = { [(output voltage) x (output current)]
÷
[(input voltage) x (input current)]} x100
XC6376E, XC6376F, XC6377E, XC6377F
The following parameter is to be added:
PARAMETER
V
OUT
Sink Current
SYMBOL
IV
OUT
L
CONDITIONS
Same as I
STB
, V
OUT
=1.0V
MIN
1.45
TYP
MAX UNITS
mA
XC6376C, XC6376F, XC6377C, XC6377F
The following parameter is to be excluded: Circuit Protect Integration Time (T
PRO
)
582
TOREX [ TOREX SEMICONDUCTOR ]
