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NCP1423 Datasheet(PDF) 3 Page - ON Semiconductor

Part No. NCP1423
Description  400 mA Sync−Rect PFM Step−Up DC−DC Converter with True−Cutoff and Ring−Killer
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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NCP1423 Datasheet(HTML) 3 Page - ON Semiconductor

 
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NCP1423
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3
ELECTRICAL CHARACTERISTICS
(VOUT = 3.3 V, TA = 25°C for typical value, −40°C v TA v 85°C for min/max values unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
Operating Voltage
VIN
0.8
VOUT
V
Output Voltage Range
VOUT
1.8
3.3
V
Minimum Input Voltage for Startup
VIN_MIN
0.85
0.90
V
Reference Voltage
(ILOAD = 0 mA, Cref = 100 nF, TA = 25°C)
VREF
1.177
1.195
1.213
V
Reference Voltage Temperature Coefficient
TCVREF
0.05
mV/
°C
FB Input Threshold (ILOAD = 0 mA, TA = −40°C to 85°C)
VFB
0.489
0.500
0.512
V
FB Input Threshold (ILOAD = 0 mA, TA = 25°C)
VFB
0.493
0.500
0.508
V
FB Input Current
IFB
1.0
nA
Internal NFET ON−Resistance (ILX=100 mA, TA = 25°C) (Note 7)
RDS(ON)_N
0.3
0.45
W
Internal PFET ON−Resistance (ILX=100 mA, TA = 25°C) (Note 7)
RDS(ON)_P
0.6
0.8
W
LX Switch Current Limit (NFET) (Note 7)
ILIM
1.2
A
Operating Current into OUT (VFB = 0.7 V, TA = 25°C)
IQ
9.0
12
mA
Operating Current into BAT
(VBAT = 1.2 V, VFB = 0.7 V, VLX = 1.2 V, TA = 25°C)
IQBAT
2.0
3.0
mA
Shutdown Current into BAT
(LBI/EN = 0 V, VBAT = 3.3 V, TA = 25°C)
IBAT_SD
0.5
1.5
mA
LX Switch MAX. ON−Time (VFB = 0 V)
tON
1.15
1.4
2.8
ms
LX Switch MIN. OFF−Time (VFB = 0 V)
tOFF
80
200
350
ns
BAT to LX Resistance (VFB = 0.7 V)
RBAT_LX
100
W
LBI Input Threshold
VLBI
0.475
0.500
0.525
V
LBI Input Hysteresis
VLBI_HYS
15
mV
LBI Input Current
ILBI
1.5
nA
LBO Low Output Voltage (VLBI = 0 V, ISINK = 1.0 mA)
VLBO_L
0.2
V
Maximum Continuous Output Current (VIN = 2.5 V, VOUT = 3.3 V) (Note 7)
IOUT
200
mA
Maximum Continuous Output Current (VIN = 0.8 V, VOUT = 3.3 V) (Note 7)
IOUT
100
mA
Soft Start Time
(VIN = 1.2 V, TA = 25°C, CREF = 100 nF, VOUT = 3.3 V) (Note 6)
TSS
2.0
8.0
ms
EN Shutdown Threshold (VBAT = 1.2 V)
VSHDN
0.34
0.50
0.68
V
EN Input Current
IEN
150
nA
ADEN Threshold (VBAT = 0.9 V to 3.3 V)
VADEN
0.5*VBAT
V
ADEN Input Current
IADEN
100
nA
ADEN Switch Resistance
RADEN
100
W
Thermal Shutdown Temperature (Note 7)
TSHDN
145
°C
Thermal Shutdown Hysteresis (Note 7)
TSDHYS
30
°C
6. Value depends on voltage at VOUT.
7. Values are guaranteed by design.


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