XC9236A33DMR Torex Semiconductor Ltd, XC9236A33DMR Datasheet - Page 6

• 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

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■ELECTRICAL CHARACTERISTICS (Continued)
XC9237A18Dxx, V
Test conditions: Unless otherwise stated, V
NOTE:
Temperature Characteristics
Short Protection Threshold
Lx SW "H" ON Resistance 1
Lx SW "H" ON Resistance 2
Lx SW "H" Leak Current
*10: Current limit denotes the level of detection at peak of coil current.
*12: XC9235 series exclude I
Lx SW "L" ON Resistance 1
Lx SW "L" ON Resistance 2
Lx SW "L" Leak Current
*11: “H”=V
*13: XC9235/9236 series exclude V
XC9235/XC9236/XC9237
Operating Voltage Range
Maximum Output Current
*9: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.
PFM Switching Current
*5: When temperature is high, a current of approximately 10μA (maximum) may leak.
*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
PWM "H" Level Voltage
*1: Including hysteresis operating voltage range.
*2: EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100
*3: ON resistance (Ω)= (V
*4: R&D value
PWM "L" Level Voltage
Oscillation Frequency
Maximum Duty Cycle
Minimum Duty Cycle
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
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
UVLO Voltage
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
PARAMETER
Latch Time
Efficiency
Voltage
IN
~V
IN
is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.
IN
-1.2V, “L”=+0.1V~-0.1V
OUT
(*10)
=1.8V, f
(*5)
(*5)
IN
- Lx pin measurement voltage) / 100mA
PFM
(V
OUT
OSC
DTY
and DTY
OUT
SYMBOL
DTY
with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse generating.
△V
DTY
I
V
PWMH
V
V
OUTMAX
V
EFFI
=3.0MHz, Ta=25℃
V
I
I
・△Topr)
V
V
R
R
R
R
f
I
I
I
LeakH
LeakL
I
SHORT
V
LIMIT_PFM
I
PWMH
t
I
PWML
t
UVLO
STB
OSC
PFM
CEH
CEL
LAT
OUT
LIM
CEH
IN
DD
CEL
SS
LxH
LxH
LxL
LxL
IN
OUT
=5.0V, V
MAX
MIN
and V
LIMIT_PFM
/
PWML
OUT(E)
V
V
I
becomes 2550kHz≦f
I
becomes f
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,
When connected to external components,
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
“L” level within 1ms
because those are only for the PFM control’s functions.
OUT
OUT
OUT
IN
IN
IN
IN
CE
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
=V
=V
=5.0V, V
=V
=V
=V
=V
=V
=V
=V
=V
=V
=V
=5.0V, V
=V
=Nominal Voltage
=V
=V
=V
=1mA
=1mA
=0V → V
=30mA, -40℃≦Topr≦85℃
=0V, Applied voltage to V
=0V, Applied voltage to V
OUT(E)
OUT(E)
CE
OUT(E)
CE
CE
CE
CE
CE
CE
CE
OUT
OUT
CE
CE
CE
IN
IN
IN
=5.0V, I
, V
=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
=5.0V, V
=5.0V, V
(*6)
(*6)
OSC
OUT
+2.0V, V
+2.0V, V
Series
+2.0V, V
CE
OUT(E)
CE
, Voltage which oscillation frequency
, Voltage which oscillation frequency
OUT
＜2550kHz
=0V,
=0V, V
=0V, V
IN
(*4)
(*4)
, I
OUT
, V
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
+1.2V, I
OUT
IN
CE
CE
CONDITIONS
OUT
IN
=30mA
minus 1.0V and equal to or greater than V
CE
CE
CE
=1mA
=V
=V
=V
=0V, Lx=0V
=0V, Lx=5.0V
=V
=0V
=0.8×V
=V
=0V, I
=0V, I
=1mA
OUT
OUT
=1.0V, I
=V
=1.0V,
OSC
voltage which Lx becomes
OUT(E)
OUT(E)
OUT(E)
OUT(E)
CE
=V
=0V
IN
OUT
=5.0V, Short Lx at
≦3450kHz
, I
(*13)
(*12)
Lx
Lx
OUT(E)
×1.1V
×0.9V
×0.1V
×0.9V
OUT
=100mA
=100mA
=100mA
(*7)
OUT(E)
OUT
CE
CE
=1mA
×1.1V
,
,
(*11)
=100mA
(*11)
,
(*8)
(*3)
(*3)
(*13)
(*12)
(*1,*11)
(*9)
1.764
0.675
2550
MIN.
V
- 0.1
- 0.1
1.00
0.65
0.25
600
170
100
900
V
0.5
1.0
2.0
IN
-
-
-
-
-
-
-
-
-
-
-
-
-
SS
–
CEH
.
±100
0.900
1.800
3000
1050
TYP.
1.40
0.35
0.42
0.45
0.52
0.01
0.01
220
200
0.9
21
86
0
-
-
-
-
-
-
-
-
-
-
-
V
IN
1.150
MAX.
1.836
3450
1350
IN
1.78
0.55
0.67
0.66
0.77
0.25
270
300
minus 0.3V, and to the PWM
6.0
1.0
1.0
1.0
6.0
0.1
0.1
2.5
35
20
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
CIRCUIT
①
①
①
③
②
②
①
①
①
③
③
①
④
④
⑤
⑤
⑥
①
③
③
①
①
⑤
⑤
①
⑦
⑦
-
-