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XC6377EXX3SL Datasheet(PDF) 8 Page - Torex Semiconductor

Part # XC6377EXX3SL
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

XC6377EXX3SL Datasheet(HTML) 8 Page - Torex Semiconductor

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XC6376/6377
Series
584
5
XC6376B103SR, XC6377B103SR
Ta=25:
(VOUT=3.0V(when programmed), FOSC=300kHz)
PARAMETER
UNITS
Output Voltage
VOUT1
V
3.060
3.000
2.940
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.
CE= VIN, FB=0.9V, 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 = 3.6V
Time taken for CE to become "L" when VOUT changes to 0V
CE "High" Voltage
VCEH
V
0.65
Only CSS connected, VIN = 3.6V, FB=0V,
Apply voltage to CE and measure EXT/1,2 "L"
CE "Low" Voltage
VCEL
V
0.20
Only CSS connected, VIN = 3.6V, FB=0V,
Apply voltage to CE and measure EXT/1,2 "H"
Only CSS connected,
CE=0V, VIN=3.6V, FB=1.2V, EXT/1,2 pull down to 200
Ω,
VEXT/1,2=VIN - 0.4V
Only CSS connected,
CE=VIN, VIN=3.6V, FB=0.9V,
EXT/1,2 pull up to 200
Ω, VEXT/1,2=0.4V
EXT/1,2 "H" ON Resistance
REXTBH
52
38
EXT/1,2 "L" ON Resistance
REXTBL
41
31
Maximum Input Voltage
VIN
V
10
Input Current
IIN
1.320
mA
1.950
Maximum Output Current
IOUTMAX
mA
500
µA
82
52
XC6376
XC6377
External components connected,
VIN=VOUT x 1.05, No load.
Supply Current
(oscillation stopped)
IDD
26
µA
39
Only CSS connected, VIN = 3.6V
FB= 1.2V, VLX=VIN
External components connected, VIN=3.6V
External components connected, VIN=3.6V,
IOUT=120mA
External components connected, VIN=4.8V
Lx SW ON Resistance
RSWON
0.69
0.94
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
Only CSS connected, VIN=3.6V, CE=VIN, LX pull down to 10
VLX=VIN - 0.2V, FB=0.9V
Same as ISTB except VLX=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:
XC6376D, XC6376D
The following parameter is to be excluded: Circuit Protect Integration Time (TPRO)
RFB1=400k
Ω, RFB2=200kΩ, CFB=100pF
Peripherals:
05S_3XC6376/77 02.09.12 15:20 ページ 584


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