XC9236A33DMR Torex Semiconductor Ltd, XC9236A33DMR Datasheet - Page 7

• 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 (Continued)
XC9237B(C)(E)(G)18Cxx, V
Operating Voltage Range (E/G series)
Operating Voltage Range (B/C series)
Temperature Characteristics
Soft Start Time (B/G Series)
Test conditions: Unless otherwise stated, V
NOTE:
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
Maximum Output Current
PFM Switching Current
PWM "H" Level Voltage
*11: “H”=V
*13: XC9235/9236 series exclude V
PWM "L" Level Voltage
*10: Current limit denotes the level of detection at peak of coil current.
*12: XC9235 series exclude I
*14: V
Oscillation Frequency
Maximum Duty Cycle
*3: ON resistance (Ω)= (V
*4: R&D value
*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,
Minimum Duty Cycle
Voltage (B/C Series)
Voltage (E/G Series)
*1: Including hysteresis operating voltage range.
*2: EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100
*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.
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
UVLO Voltage
PARAMETER
CL Discharge
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
IN
is applied when V
IN
~V
IN
IN
is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.
(*2)
-1.2V, “L”=+0.1V~-0.1V
(*10)
(*5)
OUT (E)
IN
- Lx pin measurement voltage) / 100mA
PFM
(V
OUT
OUT
DTY
x 0.5V becomes more than V
OUT
and DTY
SYMBOL
DTY
△V
DTY
I
=1.8V, f
V
V
V
with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse generating.
V
R
OUTMAX
V
PWMH
EFFI
I
V
V
R
R
・△Topr)
V
f
R
R
I
I
LeakH
I
I
SHORT
SHORT
t
V
I
LIMIT_PFM
I
PWMH
PWML
UVLO
OSC
PFM
CEH
t
t
DCHG
STB
CEL
LIM
LAT
OUT
DD
CEH
CEL
SS
SS
LxH
LxH
LxL
LxL
IN
IN
OUT
MAX
MIN
=5.0V, V
and V
LIMIT_PFM
/
OSC
PWML
OUT(E)
=1.2MHz, Ta=25℃
When connected to external components, I
(*6)
kHz≦f
When connected to external components, I
(*6)
1020kHz
V
level within 1ms
decreasing V
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
I
V
Voltage changes Lx to “H” level
V
Voltage changes Lx to “L” level
V
V
When connected to external components,
V
When connected to external components,
V
Short Lx at 1Ω resistance
Sweeping V
1Ω resistance, V
V
V
OUT
because those are only for the PFM control’s functions.
IN
IN
IN
CE
IN
IN
IN
IN
CE
IN
IN
CE
IN
IN
IN
IN
IN
IN
OUT
OUT
IN
IN
CE
CE
IN
IN
, Voltage which oscillation frequency becomes 1020
, Voltage which oscillation frequency becomes f
because those are only for the XC9237 series’ functions.
=V
=V
=V
=V
=5.0V, V
=V
=V
=V
=V
=V
=V
=V
=V
=V
=V
=V
=5.0V, V
=V
=5.0V, L
=V
=V
=0V → V
=0V → V
=30mA, -40℃≦Topr≦85℃
=Nominal Voltage, applied voltage sequence is V
=V
= V
= V
CE
CE
OUT(E)
CE
OUT(E)
OUT(E)
CE
CE
CE
CE
CE
CE
OUT
CE
CE
CE
OSC
IN
IN
IN
=5.0V, V
OUT(E)
OUT(E)
=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, The V
, V
(*13)
=5.0V, V
≦1380kHz
+2.0V, V
+2.0V, V
+2.0V, V
OUT(E)
IN
OUT
X
CE
CE
OUT
OUT
.
=5.0V, V
×0.9V, Applied voltage to V
×0.9V, Applied voltage to V
=0V, V
=0V, V
IN
IN
=V
(*4)
(*4)
, V
OUT
from V
, I
, I
OUT
+1.2V, I
OUT
OUT
OUT
OUT
OUT
OUT (E)
OUT (E)
OUT
OUT
OUT(E)
OUT
OUT
IN
CE
=0.8×V
CONDITIONS
IN
=V
=30mA
= V
=1mA
CE
=V
CE
CE
=V
=V
=0V, Lx=0V
=V
(*13)
minus 1.0V and equal to or greater than V
OUT
=1mA
=1mA
OUT
voltage which Lx becomes “L”
OUT
CE
CE
=1.0V,
OUT (E)
×0.9V , I
×0.9V , I
×0.5V
=1.0V, I
=V
OUT(E)
OUT(E)
OUT(E)
OUT(E)
OUT(E)
= V
=0V, V
=5.0V, Short Lx at
=V
OUT
(*7)
at Lx=”Low"
IN
OUT(E)
(*12)
OUT(E)
OUT(E)
, I
=100mA
×0.4V
×1.1V
×0.9V
×1.1V
×0.9V
×0.9V
OUT
,
OUT
(*14)
OUT
×1.1V
×0.9V
=1mA
Lx
Lx
(*11)
(*11)
=open
=100mA
=100mA
=100mA
(*8)
(*11)
(*12)
(*1, *11)
CE
CE
while
OUT
OUT
(*3)
(*3)
,
(*9)
,
=1mA
=1mA
OSC
OUT
＜
→V
1.764
0.675
0.338
MIN.
1020
V
- 0.1
- 0.1
1.00
0.65
0.25
100
600
120
900
200
IN
2.0
1.8
V
0.5
1.0
IN
→V
-
-
-
-
-
-
-
-
-
-
-
-
SS
XC9235/XC9236/XC9237
–
CEH
CE
.
±100
0.900
0.450
1.800
1200
1050
TYP.
1.40
0.35
0.42
0.45
0.52
0.01
0.25
160
200
300
1.0
15
92
0
-
-
-
-
-
-
-
-
-
-
-
-
V
1.836
1.150
0.563
IN
MAX.
1380
1350
IN
1.78
0.55
0.67
0.66
0.77
0.25
0.40
20.0
200
450
6.0
6.0
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
mA
mA
mA
ms
ms
ms
Ω
Ω
Ω
Ω
Ω
%
%
%
%
V
V
V
V
V
V
V
V
V
Series
CIRCUIT
7/33
①
①
①
②
③
③
①
①
①
②
②
①
④
④
④
⑤
⑥
③
③
①
①
⑤
⑤
①
①
⑦
⑦
⑦
⑧
①
-