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XC6377BXX2SR Datasheet(PDF) 7 Page - Torex Semiconductor

Part # XC6377BXX2SR
Description  PWM Controlled PWM/PFM Switchable Step-down DC/DC Converters
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Manufacturer  TOREX [Torex Semiconductor]
Direct Link  http://www.torex.co.jp
Logo TOREX - Torex Semiconductor

XC6377BXX2SR Datasheet(HTML) 7 Page - Torex Semiconductor

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XC6376/6377
Series
583
5
XC6376A503SR, XC6377A503SR
XC6376E, XC6376F, XC6377E, XC6377F
Ta=25:
(VOUT=5.0V, FOSC=300kHz)
PARAMETER
UNITS
Output Voltage
VOUT1
V
5.125
5.000
4.875
Output Voltage2
VOUT2
V
VOUT1
+1.5%
VOUT1
-0.5%
Soft-Start Time
Tss
msec
16.0
10.0
6.0
PFM Duty Ratio (Note2)
PFMDTY
%
35
25
15
External components connected, No load.
Efficiency (Note3)
EFFI
%
95
Same as VOUT 1
Minimum Operating Voltage
(UVLO Voltage)
VUVLO
Only CSS connected, VIN = output programmed voltage x 0.9,
CE= VIN, LX OFF voltage when VIN drops.
0.9
1.8
V
Circuit Protect Integration Time
TPRO
msec
8.0
5.0
3.0
Only CSS connected, VIN = output programmed voltage x 1.2,
Time taken for CE to become "L" when VOUT changes to 0V
CE "High" Voltage
VCEH
V
0.65
Only CSS connected, VIN = output programmed voltage x 1.2,
VOUT=0V, Apply voltage to CE and measure EXT/1,2 "L"
CE "Low" Voltage
VCEL
V
0.20
Only CSS connected, VIN = output programmed voltage x 1.2,
VOUT=0V, Apply voltage to CE and measure EXT/1,2 "H"
Only CSS connected, VIN = output programmed voltage x 1.2,
CE=0V, VOUT=VIN, EXT/1,2 pull down to 200
Ω,
VEXT/1,2=VIN - 0.4V
Only CSS connected, VIN = output programmed voltage x 1.2,
CE=VIN, VOUT=output programmed voltage x 0.9,
EXT/1,2 pull up to 200
Ω, VEXT/1,2=0.4V
EXT/1,2 "H" ON Resistance
REXTBH
32
24
EXT/1,2 "L" ON Resistance
REXTBL
26
20
Maximum Input Voltage
VIN
V
10
Input Current
IIN
2.540
mA
3.740
Maximum Output Current
IOUTMAX
mA
600
µA
110
71
XC6376
XC6377
External components connected,
VIN=VOUT x 1.05, No load.
Supply Current
(oscillation stopped)
IDD
26
µA
39
Only CSS connected, VIN = output programmed voltage x 1.2,
VOUT= VIN, VLX=VIN
External components connected,
VIN=output programmed voltage x 1.2,
External components connected, VIN=output programmed
voltage x 1.2, IOUT=200mA
External components connected, VIN=output programmed
voltage x 1.6, (when VIN
≤ 3.0V, VIN =3.0V)
Lx SW ON Resistance
RSWON
0.44
0.58
Stand-by Current
ISTB
µA
2.5
1.5
Same as IDD. CE=0V
%
100
Oscillator Frequency
(Note1)
FOSC
kHz
345
300
255
Lx Leak Current
ILXL
µA
2.0
External components connected, measuring of EXT/1 waveform,
VIN=VOUT1 +0.3V, IOUT=20mA
Maximum Duty Ratio
MAXDTY
Same as IDD except VOUT=output programmed voltage x0.9,
VLX=VIN-0.2V, pull down LX to 10
Ω, CE=VIN
Same as ISTB except VLX=0V
SYMBOL
CONDITIONS
MAX
MIN
TYP
PARAMETER
UNITS
VOUT Sink Current
IVOUTL
mA
1.85
Same as ISTB, VOUT=1.0V
SYMBOL
CONDITIONS
MAX
MIN
TYP
Refers to the oscillation frequency during PWM control.
Applies to the XC6377 series only (duty ratio when control changes to PFM)
EFFI = { [(output voltage) x (output current)]
÷ [(input voltage) x (input current)]} x100
Note 1:
Note 2:
Note 3:
The following parameter is to be added:
XC6376C, XC6376F, XC6377C, XC6377F
The following parameter is to be excluded: Circuit Protect Integration Time (TPRO)
05S_3XC6376/77 02.09.12 15:20 ページ 583


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