XC9236A33DMR Torex Semiconductor Ltd, XC9236A33DMR Datasheet - Page 5

• Manufacturer Part Number: XC9236A33DMR
• Description: IC, DCDC SYNCH BUCK 3MHZ 3.3V SOT25
• Manufacturer: Torex Semiconductor Ltd

Specifications of XC9236A33DMR

• Primary Input Voltage: 6V
• No. Of Outputs: 1
• Output Voltage: 3.3V
• Output Current: 600mA
• Voltage Regulator Case Style: SOT-25
• No. Of Pins: 5
• Operating Temperature Range: -40°C To +85°C
• Svhc: No SVHC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

■ELECTRICAL CHARACTERISTICS
XC9237A18Cxx, V
Temperature Characteristics
Test conditions: Unless otherwise stated, V
NOTE:
Short Protection Threshold
Lx SW "H" ON Resistance 1
Lx SW "H" ON Resistance 2
Lx SW "H" Leak Current
Lx SW "L" Leak Current
Lx SW "L" ON Resistance 1
Lx SW "L" ON Resistance 2
Operating Voltage Range
Maximum Output Current
PFM Switching Current
*10: Current limit denotes the level of detection at peak of coil current.
PWM "H" Level Voltage
*11: “H”=V
*12: XC9235 series exclude I
*13: XC9235/9236 series exclude V
PWM "L" Level Voltage
Oscillation Frequency
*9: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.
Maximum Duty Cycle
*6: The CE/MODE pin of the XC9237A series works also as an external switching pin of PWM control and PWM/PFM control. When the IC is in the operation,
*7: Time until it short-circuits V
*8: When V
*3: ON resistance (Ω)= (V
*4: R&D value
*5: When temperature is high, a current of approximately 10μA (maximum) may leak.
Minimum Duty Cycle
*1: Including hysteresis operating voltage range.
*2: EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100
Stand-by Current
Current Limit
PFM Duty Limit
CE "H" Voltage
CE "H" Current
Output Voltage
Supply Current
Output Voltage
CE "L" Voltage
CE "L" Current
Soft Start Time
UVLO Voltage
PARAMETER
control is switched to the automatic PWM/PFM switching mode when the CE/MODE pin voltage is equal to or greater than V
mode when the CE/MODE pin voltage is equal to or lower than V
Efficiency
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
Latch Time
Voltage
IN
~V
IN
is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.
IN
(*2)
-1.2V, “L”=+0.1V~-0.1V
(*10)
OUT
=1.8V, f
(*5)
(*5)
IN
- Lx pin measurement voltage) / 100mA
PFM
(V
OUT
DTY
OSC
and DTY
OUT
SYMBOL
DTY
△V
DTY
I
V
V
with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse generating.
V
OUTMAX
V
EFFI
I
PWMH
V
I
V
R
R
・△Topr)
V
f
R
R
I
I
LeakH
I
I
SHORT
=1.2MHz, Ta=25℃
LeakL
t
V
I
LIMIT_PFM
I
PWMH
PWML
UVLO
OSC
PFM
CEH
t
STB
CEL
LIM
LAT
OUT
DD
CEH
CEL
SS
LxH
LxH
LxL
LxL
IN
IN
OUT
MAX
MIN
=5.0V, V
and V
LIMIT_PFM
/
PWML
OUT(E)
I
becomes 1020 kHz≦f
I
becomes f
“L” level within 1ms
When connected to external components,
V
V
When connected to external components
V
Voltage which Lx pin holding “L” level
V
V
When connected to external components,
V
When connected to external components,
V
V
V
V
When connected to external components,
V
V
V
V
V
V
V
V
I
V
Voltage changes Lx to “H” level
V
Voltage changes Lx to “L” level
When connected to external components,
When connected to external components,
V
V
When connected to external components,
V
V
Short Lx at 1Ω resistance
Sweeping V
1Ω resistance, V
OUT
OUT
OUT
because those are only for the PFM control’s functions.
IN
IN
CE
IN
IN
IN
IN
CE
IN
IN
CE
IN
IN
IN
IN
IN
IN
IN
OUT
OUT
IN
IN
CE
IN
because those are only for the XC9237 series’ functions.
=V
=V
=V
=5.0V, V
=V
=V
=V
=V
=V
=V
=V
=V
=V
=V
=V
=V
=5.0V, V
=V
=V
=V
=1mA
=1mA
=0V → V
=30mA, -40℃≦Topr≦85℃
=Nominal Voltage
=V
=0V, Applied voltage to V
=0V, Applied voltage to V
CE
OUT(E)
CE
OUT(E)
OUT(E)
CE
CE
CE
CE
CE
CE
OUT
OUT
CE
CE
CE
IN
IN
IN
=5.0V, I
=5.0V, V
=(C-1), I
=5.0V, V
=5.0V, V
=V
=5.0V, V
=3.6V, V
=5.0V
=3.6V
=5.0V, V
=5.0V, V
=5.0V, V
, V
=5.0V, V
=5.0V, V
(*6)
(*6)
OSC
+2.0V, V
+2.0V, V
+2.0V, V
OUT(E)
OUT
CE
CE
OUT
, Voltage which oscillation frequency
, Voltage which oscillation frequency
=0V, V
＜1020kHz
=0V, V
IN
=0V,
(*4)
(*4)
, I
, V
OUT
+1.2V, I
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
CE
CE
CONDITIONS
IN
OUT
IN
=30mA
=1mA
CE
=V
CE
CE
=V
=V
=0V, I
=0V, I
=0V, Lx=0V
=0V, Lx=5.0V
=V
=0V
=0.8×V
=V
minus 1.0V and equal to or greater than V
=1mA
OUT
OUT
=1.0V,
voltage which Lx becomes
=1.0V, I
=V
OUT(E)
OUT(E)
OUT(E)
OUT(E)
OSC
CE
=V
OUT
=0V
=5.0V, Short Lx at
IN
Lx
Lx
≦1380kHz
(*13)
(*12)
OUT(E)
, I
=100mA
=100mA
=100mA
×1.1V
×0.9V
×1.1V
×0.9V
(*7)
OUT(E)
OUT
OUT
CE
CE
×1.1V
=1mA
,
(*11)
(*11)
,
=100mA
,
(*8)
(*3)
(*3)
(*13)
(*12)
(*1, *11)
(*9)
1.764
0.675
MIN.
1020
V
- 0.1
- 0.1
1.00
0.65
0.25
100
600
120
900
2.0
V
0.5
1.0
IN
-
-
-
-
-
-
-
-
-
-
-
-
SS
XC9235/XC9236/XC9237
–
CEH
.
±100
0.900
1.800
1200
1050
TYP.
1.40
0.35
0.42
0.45
0.52
0.01
0.01
160
200
1.0
15
92
0
-
-
-
-
-
-
-
-
-
-
-
V
1.836
1.150
IN
MAX.
1380
1350
IN
1.78
0.55
0.67
0.66
0.77
0.25
20.0
200
6.0
1.0
1.0
1.0
6.0
0.1
0.1
2.5
33
minus 0.3V, and to the PWM
0
-
-
-
-
- 1.0
-
ppm/℃
UNIT
kHz
μA
μA
μA
μA
μA
μA
mA
mA
mA
ms
ms
Ω
Ω
Ω
Ω
%
%
%
%
V
V
V
V
V
V
V
V
Series
CIRCUIT
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