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XC9206 Datasheet(PDF) 6 Page - Torex Semiconductor

Part No. XC9206
Description  PWM, PWM/PFM Switchable Step-Down DC/DC Converters with Driver Transistor Built-In
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Maker  TOREX [Torex Semiconductor]
Homepage  http://www.torex.co.jp
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XC9206 Datasheet(HTML) 6 Page - Torex Semiconductor

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XC9206 / 9207/ 9208 Series
PWM, PWM/PFM Switchable Step-Down DC/DC Converters with Driver Transistor Built-In
" ELECTRICAL CHARACTERISTICS
XC9206A25CMR, XC9207A25CMR, XC9208A25CMR
VOUT=2.5V, FOSC=1.2MHz, Ta=25
OC
(XC9206, 9207)
VOUT=0V, When CE voltage is
(XC9206, XC9207)
Test condition : Unless otherwise stated, VIN = 3.6V
*1
Including Hysteresis operating voltage range.
*2
EFFI = [ (Output Voltage x Output Current) / (Input Voltage x Input Current) ] x 100
*3
On resistance = VLX (measurement voltage) / 0.4
*4
*5 Time until it short-circuits VOUT with GND through 1 Ω of resistance from a state of operation and is set to VOUT=0V from current limit pulse
generating.
Latch Time
Tlat
When connected to ext. components (XC9208 only)
When connected to ext. components
CE "L" Voltage
VCEL
Soft start time
TSS
CE "H" Current
ICEH
PWM "L" Voltage
VPWML
0.9
VOUT=0V, When CE voltage is applied Lx determine "L"
VSS
(XC9208)
applied Lx determine "H"
Efficiency (*2)
EFFI
When connected to ext. components, CE=VIN, IOUT=100mA
1.2
1
2.0
-
-
6.0
V
Output Voltage
PARAMETER
SYMBOL
VOUT
Maximum Output Current
UNIT
MIN
TYP
CIRCUIT
CONDITIONS
IOUTMAX
1.8
Operating Voltage Range
VIN
(XC9208)
Supply Current 1
IDD1
CE=VIN, VOUT=0V,
Voltage which Lx pin voltage holding "L" level (*1)
U.V.L.O Voltage
VUVLO
CE=VIN, VOUT=fixed voltage x 0.9V
Supply Current 2
IDD2
Stand-by Current
Istb
Maximum Duty Cycle
MAXDTY
CE=VIN, VOUT=0V
Oscillation Frequency
FOSC
When connected to ext. components
(XC9207, XC9208 only), CE=VIN, IOUT=1mA
PFM pulse width rate
PFMDTY
%
1
30
36
Minimum Duty Cycle
MINDTY
PWM "H" Voltage
VPWMH
Lx SW ON Resistance
RLx
CE "H" Voltage
VCEH
Current Limit
ILIM
CE "L" Current
ICEL
The CE/MODE pin of the XC9208A series works also as an external PWM control and PWM/PFM control switching pin. When the IC is in
the operation, control is switched to the PWM mode when the CE/MODE pin voltage is equal to or greater than VIN minus 0.3 V, and to the
automatic PWM/PFM switching mode when the CE/MODE pin voltage is equal to or lower than VIN minus 1.0 V and equal to or greater
than VCEH.
CE=VOUT=VIN
CE=VIN, VOUT=0V, ILx=400mA (*3)
CE=VIN, VOUT=fixed voltage x 1.1V
1
CE=VIN, IOUT=30mA
MAX
1.00
mA
1
When connected to ext. components
2.450
2.500
2.550
V
6.0
When connected to ext. components
500
-
-
1.40
1.78
V
2
CE=VSS, VOUT=fixed voltage x 1.1V
µA
µA
3
158
µA
3
413
1
-
100
3
When connected to ext. components
1.020
1.200
1.380
MHz
1
CE=VIN, IOUT=30mA
24
255
-98
-0
-
1
%
2
%
2
0
--
91
%
-
4
VIN=CE=5.0V, VOUT=0V
-
600
-
mA
4
-
0.4
0.9
5
-
VIN
V
5
-
VIN
--
V
-
0.3
V
1
IOUT=1mA (*4)
When connected to ext. components (XC9208 only)
-
-
VIN-1.0
V
1
IOUT=1mA (*4)
VIN-0.3
-
0.1
µA
CE=0V, VIN=5.5V, VOUT=0V
-0.1
-
0.1
CE=VIN=5.5V, VOUT=0V
-0.1
6.0
ms
5
µA
5
1
CE=0V
! VIN, IOUT=1mA
When connected to ext. components
--
0.8
-
12.0
ms
6
VIN=CE=5.0V, short VOUT by 1
Ω resistance (*5)
Semiconductor Ltd.
Data Sheet
6


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