XC9236A33DMR Torex Semiconductor Ltd, XC9236A33DMR Datasheet - Page 8

• 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)
XC9237B(C)(E)(G)18Dxx, V
Test conditions: Unless otherwise stated, V
NOTE:
Operating Voltage Range (E/G series)
Operating Voltage Range (B/C series)
Temperature Characteristics
Soft Start Time (B/G Series)
Soft Start Time (C/E Series)
Short Protection Threshold
Short Protection Threshold
Lx SW "H" ON Resistance 1
Lx SW "H" ON Resistance 2
Lx SW "H" Leak Current
Lx SW "L" ON Resistance 1
Lx SW "L" ON Resistance 2
XC9235/XC9236/XC9237
Maximum Output Current
*10: Current limit denotes the level of detection at peak of coil current.
*11: “H”=V
*12: XC9235 series exclude I
*13: XC9235/9236 series exclude V
*14: V
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,
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
*7: Time until it short-circuits V
*8: When V
*9: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.
Oscillation Frequency
Maximum Duty Cycle
Minimum Duty Cycle
Voltage (B/C Series)
Voltage (E/G Series)
Stand-by Current
Current Limit
PFM Duty Limit
CE "H" Voltage
CE "H" Current
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
Output Voltage
Supply Current
Output Voltage
CE "L" Voltage
CE "L" Current
UVLO Voltage
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
PARAMETER
CL Discharge
Latch Time
IN
Efficiency
is applied when V
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
(*10)
(*5)
OUT (E)
IN
- Lx pin measurement voltage) / 100mA
PFM
OUT
OUT
(V
x 0.5V becomes more than V
DTY
and DTY
OUT
SYMBOL
=1.8V, f
with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse generating.
DTY
△V
DTY
I
V
V
V
V
R
PWMH
OUTMAX
V
EFFI
I
V
V
R
R
・△Topr)
V
f
R
R
I
I
LeakH
I
I
SHORT
SHORT
I
PWMH
t
V
I
LIMIT_PFM
PWML
UVLO
OSC
PFM
CEH
t
t
DCHG
STB
CEL
LIM
LAT
IN
OUT
DD
CEH
CEL
SS
SS
LxH
LxH
LxL
LxL
IN
OUT
=5.0V, V
MAX
MIN
and V
LIMIT_PFM
/
OSC
PWML
OUT(E)
=3.0MHz, Ta=25℃
When connected to external components,
V
V
When connected to external components
V
Voltage which Lx pin holding “L” level
When connected to external components,
V
When connected to external components,
V
V
V
V
When connected to external components,
V
I
V
Voltage changes Lx to “H” level
V
Voltage changes Lx to “L” level
When connected to external components,
I
becomes 2550kHz≦f
When connected to external components,
I
becomes f
V
Short Lx at 1Ω resistance
V
V
V
V
V
V
V
V
V
V
When connected to external components,
V
When connected to external components,
V
Sweeping V
1Ω resistance, V
level within 1ms
OUT
OUT
because those are only for the PFM control’s functions.
OUT
OUT
OUT
decreasing V
IN
IN
V
V
IN
IN
CE
IN
IN
CE
IN
IN
CE
IN
IN
IN
IN
IN
IN
IN
IN
CE
CE
IN
because those are only for the XC9237 series’ functions.
IN
=V
=V
=V
IN
=V
=V
=V
=5.0V, V
=V
=V
=V
=V
=V
=V
=V
=V
=V
=5.0V, V
=Nominal Voltage, applied voltage sequence is V
=V
=V
=V
=1mA
=1mA
=0V → V
=0V → V
=30mA, -40℃≦Topr≦85℃
=V
=V
=V
=5.0V, L
OUT(E)
OUT(E)
CE
CE
OUT(E)
CE
CE
CE
CE
CE
CE
CE
OUT
CE
CE
IN
IN
IN
OUT(E)
OUT(E)
CE
=5.0V, V
=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, The V
(*6)
(*6)
OSC
IN
Series
OUT
+2.0V, V
+2.0V, V
+2.0V, V
CE
OUT(E)
CE
×0.9V, Applied voltage to V
×0.9V, Applied voltage to V
OUT
.
, Voltage which oscillation frequency
, Voltage which oscillation frequency
X
OUT
=0V, V
＜2550kHz
=0V, V
=5.0V, V
=V
IN
IN
(*4)
(*4)
, V
, I
, I
OUT
OUT
OUT
OUT
OUT(E)
OUT
OUT
OUT
OUT
OUT
OUT
from V
+1.2V, I
IN
OUT
OUT
OUT
CE
IN
CONDITIONS
=0.8×V
=30mA
=V
minus 1.0V and equal to or greater than V
CE
CE
=V
CE
=1mA
=V
=V
=V
=V
=V
=0V, Lx=0V
=V
OUT
=1mA
=1mA
OUT
voltage which Lx becomes “L”
=1.0V, I
=V
=1.0V,
×0.5V
CE
OSC
OUT(E)
OUT(E)
OUT(E)
OUT
CE
OUT(E)
OUT(E)
OUT(E)
OUT(E)
OUT (E)
=V
=V
=5.0V, Short Lx at
IN
=0V, V
OUT
≦3450kHz
(*13)
, I
OUT(E)
(*12)
at Lx=”Low"
(*7)
OUT(E)
OUT(E)
×0.9V
×0.9V, I
×0.9V, I
×1.1V
×0.9V
×0.1V
=100mA
×0.9V
OUT
×0.4V
(*14)
OUT
=1mA
×0.9V
OUT
×1.1V
,
=100mA
(*11)
,
(*11)
=open
Lx
Lx
(*8)
=100mA
=100mA
(*13)
(*12)
(*11)
(*1,*11)
CE
CE
,
,
while
(*9)
(*3)
(*3)
OUT
→V
1.764
0.675
0.338
2550
IN
MIN.
V
- 0.1
- 0.1
1.00
0.65
0.25
600
170
100
900
200
V
0.5
1.0
→V
2.0
1.8
IN
-
-
-
-
-
-
-
-
-
-
-
-
-
SS
CEH
–
CE
.
±100
0.900
0.450
1.800
3000
1050
TYP.
1.40
0.35
0.42
0.45
0.52
0.01
0.32
220
200
300
0.9
21
86
0
-
-
-
-
-
-
-
-
-
-
-
-
V
IN
1.150
0.563
MAX.
1.836
3450
1350
IN
1.78
0.55
0.67
0.66
0.77
0.25
0.50
270
300
450
minus 0.3V, and to the PWM
6.0
6.0
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
mA
mA
mA
ms
ms
ms
Ω
Ω
Ω
Ω
Ω
%
%
%
%
V
V
V
V
V
V
V
V
V
CIRCUIT
①
①
①
③
②
②
①
①
①
③
③
①
④
④
⑤
⑥
①
③
③
①
①
⑤
⑤
①
①
⑦
⑦
⑦
⑧
-
-