Product Specification
IXD3235/36/37
ELECTRICAL OPERATING CHARACTERISTICS (CONTINUED)
IXD3235/36/37 D/F series, VOUT = 1.8 V, Ta = 250C
PARAMETER
Operating Voltage Range
FB Voltage
SYMBOL
VIN
CONDITIONS
MIN. TYP. MAX. UNIT CIRCUIT
1.8
-
6.0
V
V
VFB
VIN = VCE = 5.0 V, IOUT = 30 mA
VIN = VOUT(E) + 2.0 V, VCE = 1.0 V9)
VCE = VIN, VOUT = 01), 11)
1.784 1.800 1.816
Maximum Output Current
UVLO Voltage
IOUT_MAX
VUVLO
600
mA
V
1.00 1.40 1.78
15
IXD323xx18Cxx
IXD323xx18Dxx
Supply
Current
IQ
VIN = VCE = 5.0 V, VOUT = VOUT(E) x 1.1 V
VIN = 5.0 V, VCE = 0 V, VOUT = VOUT(E) x 1.1 V
VIN = VOUT(E) + 2 V, VCE = 1.0 V, IOUT = 100 mA
µA
µA
21
0
35
Standby Current
ISTB
fOSC
1.0
IXD323xx18Cxx
1020 1220 1380
2550 3000 3460
Oscillation
Frequency
kHz
IXD323xx18Dxx
IXD323xx18Cxx
IXD323xx18Dxx
PFM
Switching
Current
120
170
160
220
200
270
12)
IPFM
VIN = VCE = VOUT(E) + 2 V, , IOUT = 1 mA (see table A)
mA
12)
P-channel ON time maximum
Maximum Duty Cycle Ratio
Minimum Duty Cycle Ratio
tPON_MAX
VIN = VCE = (see table B), IOUT = 1 mA
VIN = VCE = 5.0 V, VOUT = VOUT(E) x 0.9 V
VIN = VCE = 5.0 V, VOUT = VOUT(E) x 1.1 V
2Dmax 3DMAX
DMAX
DMIN
100
%
%
0
IXD323xx18Cxx
Efficiency 2)
92
EFFI
VIN = VCE = VOUT(E) + 1.2 V, IOUT = 100 mA
%
IXD323xx18Dxx
86
LX “H” ON Resistance 13)
LX “H” ON Resistance 23)
LX “L” ON Resistance 14)
LX “L” ON Resistance 24)
LX “H” Leakage Current5)
LX “L” Leakage Current5)
Current Limit10)
RLXH1
RLXH2
RLXL1
RLXL2
ILXH
VIN = VCE = 5.0 V, VOUT = 0 V, ILX = 100 mA
VIN = VCE = 3.6 V, VOUT = 0 V, ILX = 100 mA
VIN = VCE = 5.0 V
0.35 0.55
0.42 0.67
0.45 0.65
0.52 0.77
Ω
Ω
Ω
VIN = VCE = 3.6 V
Ω
VIN = VCE = 5.0 V, VOUT = 0 V, VLX = 5.0 V
VIN = VCE = 5.0 V, VOUT = 0 V, VLX = 5.0 V
VIN = VCE = 5.0 V, VOUT = VOUT(E) x 0.9 V8)
0.01
0.01
1.0
1.0
µA
µA
mA
ILXH
ILIM
ꢀꢁꢂꢃ
900 1050 1350
±100
Output Voltage Temperature
Characteristics
CE “H” Voltage14)
CE “L” Voltage15)
PWM mode Start Voltage6), 13)
-400C ≤ TOPR ≤ 850C, IOUT = 30 mA
ppm/0C
ꢀꢁꢂꢃ ꢄ ꢅꢁꢆꢇ
VCEH
VOUT = 0 V
VOUT = 0 V
IOUT = 1 mA
0.65
0
6.0
0.25
V
V
VCEL
VPWM
VIN -1.0
PWM/PFM mode
Start Voltage6), 13)
VIN –
0.25
VPFM
IOUT = 1 mA
CE “H” Current
CE “L” Current
IXD323xD18Cxx
IENH
IENL
VIN = VCE = 5.0 V, VOUT = 0 V
-0.1
0.1
0.1
2.5
µA
µA
VIN = 5.0 V, VCE = 0 V, VOUT = 0 V
-0.1
0.5
1.0
IXD323xF18Cxx
IXD323xD18Dxx
IXD323xF18Dxx
0.25 0.40
1.0 2.5
Soft-Start
Time
tSS
IOUT = 1 mA (see table C)
ms
ms
0.5
0.25 0.40
20.0
VIN = VCE = 5.0 V, VOUT = 0.8 x VOUT(E), LX short with
1 Ω resistor to ground
Latch Time7)
tLAT
1.0
Short Protection Threshold
Voltage
VIN = VCE = 5.0 V, LX short with 1 Ω resistor to
ground
VSHORT
RDCL
0.675 0.900 1.150
200 300 450
V
CL Discharge Resistance
VIN = VLX = 5.0 V, VCE = 0 V, VOUT - open
Ω
NOTE:
Test conditions: Unless otherwise stated, VIN = 5.0 V, VOUT(E) = Nominal Voltage
1) Including hysteresis operating voltage range
2) EFFI = {(output voltage × output current) / (input voltage × input current)} × 100%
3) ON resistance (Ω) = (VIN - Lx pin measurement voltage) / 100mA
4) Design target value
5) A 10μA (maximum) current may leak at high temperature
PS034201-0515
PRELIMINARY
6
ZILOG [ ZILOG, INC. ]
